Xuyi Wang
/
wolfSSL
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Diff: wolfcrypt/src/asn.c
- Revision:
- 16:048e5e270a58
- Parent:
- 15:117db924cf7c
diff -r 117db924cf7c -r 048e5e270a58 wolfcrypt/src/asn.c
--- a/wolfcrypt/src/asn.c Sat Aug 18 22:20:43 2018 +0000
+++ b/wolfcrypt/src/asn.c Tue Nov 19 14:32:16 2019 +0000
@@ -1,13749 +1,13749 @@
-/* asn.c
- *
- * Copyright (C) 2006-2017 wolfSSL Inc.
- *
- * This file is part of wolfSSL.
- *
- * wolfSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * wolfSSL is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
- */
-
-
-#ifdef HAVE_CONFIG_H
- #include <config.h>
-#endif
-
-#include <wolfssl/wolfcrypt/settings.h>
-
-/*
-ASN Options:
- * NO_ASN_TIME: Disables time parts of the ASN code for systems without an RTC
- or wishing to save space.
- * IGNORE_NAME_CONSTRAINTS: Skip ASN name checks.
- * ASN_DUMP_OID: Allows dump of OID information for debugging.
- * RSA_DECODE_EXTRA: Decodes extra information in RSA public key.
- * WOLFSSL_CERT_GEN: Cert generation. Saves extra certificate info in GetName.
- * WOLFSSL_NO_ASN_STRICT: Disable strict RFC compliance checks to
- restore 3.13.0 behavior.
- * WOLFSSL_NO_OCSP_OPTIONAL_CERTS: Skip optional OCSP certs (responder issuer
- must still be trusted)
- * WOLFSSL_NO_TRUSTED_CERTS_VERIFY: Workaround for situation where entire cert
- chain is not loaded. This only matches on subject and public key and
- does not perform a PKI validation, so it is not a secure solution.
- Only enabled for OCSP.
- * WOLFSSL_NO_OCSP_ISSUER_CHECK: Can be defined for backwards compatibility to
- disable checking of OCSP subject hash with issuer hash.
- * WOLFSSL_ALT_CERT_CHAINS: Allows matching multiple CA's to validate
- chain based on issuer and public key (includes signature confirmation)
-*/
-
-#ifndef NO_ASN
-
-#include <wolfssl/wolfcrypt/asn.h>
-#include <wolfssl/wolfcrypt/coding.h>
-#include <wolfssl/wolfcrypt/md2.h>
-#include <wolfssl/wolfcrypt/hmac.h>
-#include <wolfssl/wolfcrypt/error-crypt.h>
-#include <wolfssl/wolfcrypt/pwdbased.h>
-#include <wolfssl/wolfcrypt/des3.h>
-#include <wolfssl/wolfcrypt/aes.h>
-#include <wolfssl/wolfcrypt/wc_encrypt.h>
-#include <wolfssl/wolfcrypt/logging.h>
-
-#include <wolfssl/wolfcrypt/random.h>
-#include <wolfssl/wolfcrypt/hash.h>
-#ifdef NO_INLINE
- #include <wolfssl/wolfcrypt/misc.h>
-#else
- #define WOLFSSL_MISC_INCLUDED
- #include <wolfcrypt/src/misc.c>
-#endif
-
-#ifndef NO_PWDBASED
- #include <wolfssl/wolfcrypt/aes.h>
-#endif
-#ifndef NO_RC4
- #include <wolfssl/wolfcrypt/arc4.h>
-#endif
-
-#ifdef HAVE_NTRU
- #include "libntruencrypt/ntru_crypto.h"
-#endif
-
-#if defined(WOLFSSL_SHA512) || defined(WOLFSSL_SHA384)
- #include <wolfssl/wolfcrypt/sha512.h>
-#endif
-
-#ifndef NO_SHA256
- #include <wolfssl/wolfcrypt/sha256.h>
-#endif
-
-#ifdef HAVE_ECC
- #include <wolfssl/wolfcrypt/ecc.h>
-#endif
-
-#ifdef HAVE_ED25519
- #include <wolfssl/wolfcrypt/ed25519.h>
-#endif
-
-#ifndef NO_RSA
- #include <wolfssl/wolfcrypt/rsa.h>
-#endif
-
-#ifdef WOLFSSL_DEBUG_ENCODING
- #if defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
- #if MQX_USE_IO_OLD
- #include <fio.h>
- #else
- #include <nio.h>
- #endif
- #else
- #include <stdio.h>
- #endif
-#endif
-
-
-#ifdef _MSC_VER
- /* 4996 warning to use MS extensions e.g., strcpy_s instead of XSTRNCPY */
- #pragma warning(disable: 4996)
-#endif
-
-#define ERROR_OUT(err, eLabel) { ret = (err); goto eLabel; }
-
-WOLFSSL_LOCAL int GetLength(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
-{
- int length = 0;
- word32 idx = *inOutIdx;
- byte b;
-
- *len = 0; /* default length */
-
- if ((idx + 1) > maxIdx) { /* for first read */
- WOLFSSL_MSG("GetLength bad index on input");
- return BUFFER_E;
- }
-
- b = input[idx++];
- if (b >= ASN_LONG_LENGTH) {
- word32 bytes = b & 0x7F;
-
- if ((idx + bytes) > maxIdx) { /* for reading bytes */
- WOLFSSL_MSG("GetLength bad long length");
- return BUFFER_E;
- }
-
- while (bytes--) {
- b = input[idx++];
- length = (length << 8) | b;
- }
- }
- else
- length = b;
-
- if ((idx + length) > maxIdx) { /* for user of length */
- WOLFSSL_MSG("GetLength value exceeds buffer length");
- return BUFFER_E;
- }
-
- *inOutIdx = idx;
- if (length > 0)
- *len = length;
-
- return length;
-}
-
-
-/* Get the DER/BER encoding of an ASN.1 header.
- *
- * input Buffer holding DER/BER encoded data.
- * tag ASN.1 tag value expected in header.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the expected tag is not found or length is invalid.
- * Otherwise, the number of bytes in the ASN.1 data.
- */
-static int GetASNHeader(const byte* input, byte tag, word32* inOutIdx, int* len,
- word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- byte b;
- int length;
-
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
-
- b = input[idx++];
- if (b != tag)
- return ASN_PARSE_E;
-
- if (GetLength(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
-
- *len = length;
- *inOutIdx = idx;
- return length;
-}
-
-WOLFSSL_LOCAL int GetSequence(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
-{
- return GetASNHeader(input, ASN_SEQUENCE | ASN_CONSTRUCTED, inOutIdx, len,
- maxIdx);
-}
-
-
-WOLFSSL_LOCAL int GetSet(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
-{
- return GetASNHeader(input, ASN_SET | ASN_CONSTRUCTED, inOutIdx, len,
- maxIdx);
-}
-
-/* Get the DER/BER encoded ASN.1 NULL element.
- * Ensure that the all fields are as expected and move index past the element.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_TAG_NULL_E when the NULL tag is not found.
- * ASN_EXPECT_0_E when the length is not zero.
- * Otherwise, 0 to indicate success.
- */
-static int GetASNNull(const byte* input, word32* inOutIdx, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- byte b;
-
- if ((idx + 2) > maxIdx)
- return BUFFER_E;
-
- b = input[idx++];
- if (b != ASN_TAG_NULL)
- return ASN_TAG_NULL_E;
-
- if (input[idx++] != 0)
- return ASN_EXPECT_0_E;
-
- *inOutIdx = idx;
- return 0;
-}
-
-/* Set the DER/BER encoding of the ASN.1 NULL element.
- *
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
-static int SetASNNull(byte* output)
-{
- output[0] = ASN_TAG_NULL;
- output[1] = 0;
-
- return 2;
-}
-
-/* Get the DER/BER encoding of an ASN.1 BOOLEAN.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the BOOLEAN tag is not found or length is not 1.
- * Otherwise, 0 to indicate the value was false and 1 to indicate true.
- */
-static int GetBoolean(const byte* input, word32* inOutIdx, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- byte b;
-
- if ((idx + 3) > maxIdx)
- return BUFFER_E;
-
- b = input[idx++];
- if (b != ASN_BOOLEAN)
- return ASN_PARSE_E;
-
- if (input[idx++] != 1)
- return ASN_PARSE_E;
-
- b = input[idx++] != 0;
-
- *inOutIdx = idx;
- return b;
-}
-
-#ifdef ASN1_SET_BOOLEAN
-/* Set the DER/BER encoding of the ASN.1 NULL element.
- * Note: Function not required as yet.
- *
- * val Boolean value to encode.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
-static int SetBoolean(int val, byte* output)
-{
- output[0] = ASN_BOOLEAN;
- output[1] = 1;
- output[2] = val ? -1 : 0;
-
- return 3;
-}
-#endif
-
-/* Get the DER/BER encoding of an ASN.1 OCTET_STRING header.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the OCTET_STRING tag is not found or length is
- * invalid.
- * Otherwise, the number of bytes in the ASN.1 data.
- */
-static int GetOctetString(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
-{
- return GetASNHeader(input, ASN_OCTET_STRING, inOutIdx, len, maxIdx);
-}
-
-/* Get the DER/BER encoding of an ASN.1 INTEGER header.
- * Removes the leading zero byte when found.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data (excluding any leading zero).
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the INTEGER tag is not found, length is invalid,
- * or invalid use of or missing leading zero.
- * Otherwise, 0 to indicate success.
- */
-static int GetASNInt(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
-{
- int ret;
-
- ret = GetASNHeader(input, ASN_INTEGER, inOutIdx, len, maxIdx);
- if (ret < 0)
- return ret;
-
- if (*len > 0) {
- /* remove leading zero, unless there is only one 0x00 byte */
- if ((input[*inOutIdx] == 0x00) && (*len > 1)) {
- (*inOutIdx)++;
- (*len)--;
-
- if (*len > 0 && (input[*inOutIdx] & 0x80) == 0)
- return ASN_PARSE_E;
- }
- }
-
- return 0;
-}
-
-/* Get the DER/BER encoding of an ASN.1 INTEGER that has a value of no more than
- * 7 bits.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the INTEGER tag is not found or length is invalid.
- * Otherwise, the 7-bit value.
- */
-static int GetInteger7Bit(const byte* input, word32* inOutIdx, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- byte b;
-
- if ((idx + 3) > maxIdx)
- return BUFFER_E;
-
- if (input[idx++] != ASN_INTEGER)
- return ASN_PARSE_E;
- if (input[idx++] != 1)
- return ASN_PARSE_E;
- b = input[idx++];
-
- *inOutIdx = idx;
- return b;
-}
-
-
-#if !defined(NO_DSA) && !defined(NO_SHA)
-static char sigSha1wDsaName[] = "SHAwDSA";
-#endif /* NO_DSA */
-#ifndef NO_RSA
-#ifdef WOLFSSL_MD2
- static char sigMd2wRsaName[] = "MD2wRSA";
-#endif
-#ifndef NO_MD5
- static char sigMd5wRsaName[] = "MD5wRSA";
-#endif
-#ifndef NO_SHA
- static char sigSha1wRsaName[] = "SHAwRSA";
-#endif
-#ifdef WOLFSSL_SHA224
- static char sigSha224wRsaName[] = "SHA224wRSA";
-#endif
-#ifndef NO_SHA256
- static char sigSha256wRsaName[] = "SHA256wRSA";
-#endif
-#ifdef WOLFSSL_SHA384
- static char sigSha384wRsaName[] = "SHA384wRSA";
-#endif
-#ifdef WOLFSSL_SHA512
- static char sigSha512wRsaName[] = "SHA512wRSA";
-#endif
-#endif /* NO_RSA */
-#ifdef HAVE_ECC
-#ifndef NO_SHA
- static char sigSha1wEcdsaName[] = "SHAwECDSA";
-#endif
-#ifdef WOLFSSL_SHA224
- static char sigSha224wEcdsaName[] = "SHA224wECDSA";
-#endif
-#ifndef NO_SHA256
- static char sigSha256wEcdsaName[] = "SHA256wECDSA";
-#endif
-#ifdef WOLFSSL_SHA384
- static char sigSha384wEcdsaName[] = "SHA384wECDSA";
-#endif
-#ifdef WOLFSSL_SHA512
- static char sigSha512wEcdsaName[] = "SHA512wECDSA";
-#endif
-#endif /* HAVE_ECC */
-static char sigUnknownName[] = "Unknown";
-
-
-/* Get the human readable string for a signature type
- *
- * oid Oid value for signature
- */
-char* GetSigName(int oid) {
- switch (oid) {
- #if !defined(NO_DSA) && !defined(NO_SHA)
- case CTC_SHAwDSA:
- return sigSha1wDsaName;
- #endif /* NO_DSA && NO_SHA */
- #ifndef NO_RSA
- #ifdef WOLFSSL_MD2
- case CTC_MD2wRSA:
- return sigMd2wRsaName;
- #endif
- #ifndef NO_MD5
- case CTC_MD5wRSA:
- return sigMd5wRsaName;
- #endif
- #ifndef NO_SHA
- case CTC_SHAwRSA:
- return sigSha1wRsaName;
- #endif
- #ifdef WOLFSSL_SHA224
- case CTC_SHA224wRSA:
- return sigSha224wRsaName;
- #endif
- #ifndef NO_SHA256
- case CTC_SHA256wRSA:
- return sigSha256wRsaName;
- #endif
- #ifdef WOLFSSL_SHA384
- case CTC_SHA384wRSA:
- return sigSha384wRsaName;
- #endif
- #ifdef WOLFSSL_SHA512
- case CTC_SHA512wRSA:
- return sigSha512wRsaName;
- #endif
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- #ifndef NO_SHA
- case CTC_SHAwECDSA:
- return sigSha1wEcdsaName;
- #endif
- #ifdef WOLFSSL_SHA224
- case CTC_SHA224wECDSA:
- return sigSha224wEcdsaName;
- #endif
- #ifndef NO_SHA256
- case CTC_SHA256wECDSA:
- return sigSha256wEcdsaName;
- #endif
- #ifdef WOLFSSL_SHA384
- case CTC_SHA384wECDSA:
- return sigSha384wEcdsaName;
- #endif
- #ifdef WOLFSSL_SHA512
- case CTC_SHA512wECDSA:
- return sigSha512wEcdsaName;
- #endif
- #endif /* HAVE_ECC */
- default:
- return sigUnknownName;
- }
-}
-
-
-#if !defined(NO_DSA) || defined(HAVE_ECC) || \
- (!defined(NO_RSA) && \
- (defined(WOLFSSL_CERT_GEN) || \
- ((defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(HAVE_USER_RSA))))
-/* Set the DER/BER encoding of the ASN.1 INTEGER header.
- *
- * len Length of data to encode.
- * firstByte First byte of data, most significant byte of integer, to encode.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
-static int SetASNInt(int len, byte firstByte, byte* output)
-{
- word32 idx = 0;
-
- output[idx++] = ASN_INTEGER;
- if (firstByte & 0x80)
- len++;
- idx += SetLength(len, output + idx);
- if (firstByte & 0x80)
- output[idx++] = 0x00;
-
- return idx;
-}
-#endif
-
-#if !defined(NO_DSA) || defined(HAVE_ECC) || defined(WOLFSSL_CERT_GEN) || \
- ((defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(NO_RSA) && !defined(HAVE_USER_RSA))
-/* Set the DER/BER encoding of the ASN.1 INTEGER element with an mp_int.
- * The number is assumed to be positive.
- *
- * n Multi-precision integer to encode.
- * maxSz Maximum size of the encoded integer.
- * A negative value indicates no check of length requested.
- * output Buffer to write into.
- * returns BUFFER_E when the data is too long for the buffer.
- * MP_TO_E when encoding the integer fails.
- * Otherwise, the number of bytes added to the buffer.
- */
-static int SetASNIntMP(mp_int* n, int maxSz, byte* output)
-{
- int idx = 0;
- int leadingBit;
- int length;
- int err;
-
- leadingBit = mp_leading_bit(n);
- length = mp_unsigned_bin_size(n);
- idx = SetASNInt(length, leadingBit ? 0x80 : 0x00, output);
- if (maxSz >= 0 && (idx + length) > maxSz)
- return BUFFER_E;
-
- err = mp_to_unsigned_bin(n, output + idx);
- if (err != MP_OKAY)
- return MP_TO_E;
- idx += length;
-
- return idx;
-}
-#endif
-
-#if !defined(NO_RSA) && defined(HAVE_USER_RSA) && defined(WOLFSSL_CERT_GEN)
-/* Set the DER/BER encoding of the ASN.1 INTEGER element with an mp_int from
- * an RSA key.
- * The number is assumed to be positive.
- *
- * n Multi-precision integer to encode.
- * output Buffer to write into.
- * returns BUFFER_E when the data is too long for the buffer.
- * MP_TO_E when encoding the integer fails.
- * Otherwise, the number of bytes added to the buffer.
- */
-static int SetASNIntRSA(mp_int* n, byte* output)
-{
- int idx = 0;
- int leadingBit;
- int length;
- int err;
-
- leadingBit = wc_Rsa_leading_bit(n);
- length = wc_Rsa_unsigned_bin_size(n);
- idx = SetASNInt(length, leadingBit ? 0x80 : 0x00, output);
- if ((idx + length) > MAX_RSA_INT_SZ)
- return BUFFER_E;
-
- err = wc_Rsa_to_unsigned_bin(n, output + idx, length);
- if (err != MP_OKAY)
- return MP_TO_E;
- idx += length;
-
- return idx;
-}
-#endif /* !NO_RSA && HAVE_USER_RSA && WOLFSSL_CERT_GEN */
-
-/* Windows header clash for WinCE using GetVersion */
-WOLFSSL_LOCAL int GetMyVersion(const byte* input, word32* inOutIdx,
- int* version, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
-
- if ((idx + MIN_VERSION_SZ) > maxIdx)
- return ASN_PARSE_E;
-
- if (input[idx++] != ASN_INTEGER)
- return ASN_PARSE_E;
-
- if (input[idx++] != 0x01)
- return ASN_VERSION_E;
-
- *version = input[idx++];
- *inOutIdx = idx;
-
- return *version;
-}
-
-
-#ifndef NO_PWDBASED
-/* Get small count integer, 32 bits or less */
-int GetShortInt(const byte* input, word32* inOutIdx, int* number, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- word32 len;
-
- *number = 0;
-
- /* check for type and length bytes */
- if ((idx + 2) > maxIdx)
- return BUFFER_E;
-
- if (input[idx++] != ASN_INTEGER)
- return ASN_PARSE_E;
-
- len = input[idx++];
- if (len > 4)
- return ASN_PARSE_E;
-
- if (len + idx > maxIdx)
- return ASN_PARSE_E;
-
- while (len--) {
- *number = *number << 8 | input[idx++];
- }
-
- *inOutIdx = idx;
-
- return *number;
-}
-
-
-/* Set small integer, 32 bits or less. DER encoding with no leading 0s
- * returns total amount written including ASN tag and length byte on success */
-static int SetShortInt(byte* input, word32* inOutIdx, word32 number,
- word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- word32 len = 0;
- int i;
- byte ar[MAX_LENGTH_SZ];
-
- /* check for room for type and length bytes */
- if ((idx + 2) > maxIdx)
- return BUFFER_E;
-
- input[idx++] = ASN_INTEGER;
- idx++; /* place holder for length byte */
- if (MAX_LENGTH_SZ + idx > maxIdx)
- return ASN_PARSE_E;
-
- /* find first non zero byte */
- XMEMSET(ar, 0, MAX_LENGTH_SZ);
- c32toa(number, ar);
- for (i = 0; i < MAX_LENGTH_SZ; i++) {
- if (ar[i] != 0) {
- break;
- }
- }
-
- /* handle case of 0 */
- if (i == MAX_LENGTH_SZ) {
- input[idx++] = 0; len++;
- }
-
- for (; i < MAX_LENGTH_SZ && idx < maxIdx; i++) {
- input[idx++] = ar[i]; len++;
- }
-
- /* jump back to beginning of input buffer using unaltered inOutIdx value
- * and set number of bytes for integer, then update the index value */
- input[*inOutIdx + 1] = (byte)len;
- *inOutIdx = idx;
-
- return len + 2; /* size of integer bytes plus ASN TAG and length byte */
-}
-#endif /* !NO_PWDBASED */
-
-/* May not have one, not an error */
-static int GetExplicitVersion(const byte* input, word32* inOutIdx, int* version,
- word32 maxIdx)
-{
- word32 idx = *inOutIdx;
-
- WOLFSSL_ENTER("GetExplicitVersion");
-
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
-
- if (input[idx++] == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED)) {
- *inOutIdx = ++idx; /* skip header */
- return GetMyVersion(input, inOutIdx, version, maxIdx);
- }
-
- /* go back as is */
- *version = 0;
-
- return 0;
-}
-
-int GetInt(mp_int* mpi, const byte* input, word32* inOutIdx, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- int ret;
- int length;
-
- ret = GetASNInt(input, &idx, &length, maxIdx);
- if (ret != 0)
- return ret;
-
- if (mp_init(mpi) != MP_OKAY)
- return MP_INIT_E;
-
- if (mp_read_unsigned_bin(mpi, (byte*)input + idx, length) != 0) {
- mp_clear(mpi);
- return ASN_GETINT_E;
- }
-
-#ifdef HAVE_WOLF_BIGINT
- if (wc_bigint_from_unsigned_bin(&mpi->raw, input + idx, length) != 0) {
- mp_clear(mpi);
- return ASN_GETINT_E;
- }
-#endif /* HAVE_WOLF_BIGINT */
-
- *inOutIdx = idx + length;
-
- return 0;
-}
-
-#if !defined(WOLFSSL_KEY_GEN) && !defined(OPENSSL_EXTRA) && defined(RSA_LOW_MEM)
-#if !defined(NO_RSA) && !defined(HAVE_USER_RSA)
-static int SkipInt(const byte* input, word32* inOutIdx, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- int ret;
- int length;
-
- ret = GetASNInt(input, &idx, &length, maxIdx);
- if (ret != 0)
- return ret;
-
- *inOutIdx = idx + length;
-
- return 0;
-}
-#endif
-#endif
-
-static int CheckBitString(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx, int zeroBits, byte* unusedBits)
-{
- word32 idx = *inOutIdx;
- int length;
- byte b;
-
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
-
- if (input[idx++] != ASN_BIT_STRING)
- return ASN_BITSTR_E;
-
- if (GetLength(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
-
- /* extra sanity check that length is greater than 0 */
- if (length <= 0) {
- WOLFSSL_MSG("Error length was 0 in CheckBitString");
- return BUFFER_E;
- }
-
- if (idx + 1 > maxIdx) {
- WOLFSSL_MSG("Attempted buffer read larger than input buffer");
- return BUFFER_E;
- }
-
- b = input[idx];
- if (zeroBits && b != 0x00)
- return ASN_EXPECT_0_E;
- if (b >= 0x08)
- return ASN_PARSE_E;
- if (b != 0) {
- if ((byte)(input[idx + length - 1] << (8 - b)) != 0)
- return ASN_PARSE_E;
- }
- idx++;
- length--; /* length has been checked for greater than 0 */
-
- *inOutIdx = idx;
- if (len != NULL)
- *len = length;
- if (unusedBits != NULL)
- *unusedBits = b;
-
- return 0;
-}
-
-/* RSA (with CertGen or KeyGen) OR ECC OR ED25519 (with CertGen or KeyGen) */
-#if (!defined(NO_RSA) && !defined(HAVE_USER_RSA) && \
- (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA))) || \
- defined(HAVE_ECC) || \
- (defined(HAVE_ED25519) && \
- (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)))
-
-/* Set the DER/BER encoding of the ASN.1 BIT_STRING header.
- *
- * len Length of data to encode.
- * unusedBits The number of unused bits in the last byte of data.
- * That is, the number of least significant zero bits before a one.
- * The last byte is the most-significant non-zero byte of a number.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
-static word32 SetBitString(word32 len, byte unusedBits, byte* output)
-{
- word32 idx = 0;
-
- output[idx++] = ASN_BIT_STRING;
- idx += SetLength(len + 1, output + idx);
- output[idx++] = unusedBits;
-
- return idx;
-}
-#endif /* !NO_RSA || HAVE_ECC || HAVE_ED25519 */
-
-#ifdef ASN_BER_TO_DER
-/* Convert a BER encoding with indefinite length items to DER.
- *
- * ber BER encoded data.
- * berSz Length of BER encoded data.
- * der Buffer to hold DER encoded version of data.
- * NULL indicates only the length is required.
- * derSz The size of the buffer to hold the DER encoded data.
- * Will be set if der is NULL, otherwise the value is checked as der is
- * filled.
- * returns ASN_PARSE_E if the BER data is invalid and BAD_FUNC_ARG if ber or
- * derSz are NULL.
- */
-int wc_BerToDer(const byte* ber, word32 berSz, byte* der, word32* derSz)
-{
- int ret;
- word32 i, j, k;
- int len, l;
- int indef;
- int depth = 0;
- byte type;
- word32 cnt, sz;
- word32 outSz;
- byte lenBytes[4];
-
- if (ber == NULL || derSz == NULL)
- return BAD_FUNC_ARG;
-
- outSz = *derSz;
-
- for (i = 0, j = 0; i < berSz; ) {
- /* Check that there is data for an ASN item to parse. */
- if (i + 2 > berSz)
- return ASN_PARSE_E;
-
- /* End Of Content (EOC) mark end of indefinite length items.
- * EOCs are not encoded in DER.
- * Keep track of no. indefinite length items that have not been
- * terminated in depth.
- */
- if (ber[i] == 0 && ber[i+1] == 0) {
- if (depth == 0)
- break;
- if (--depth == 0)
- break;
-
- i += 2;
- continue;
- }
-
- /* Indefinite length is encoded as: 0x80 */
- type = ber[i];
- indef = ber[i+1] == ASN_INDEF_LENGTH;
- if (indef && (type & 0xC0) == 0 &&
- ber[i] != (ASN_SEQUENCE | ASN_CONSTRUCTED) &&
- ber[i] != (ASN_SET | ASN_CONSTRUCTED)) {
- /* Indefinite length OCTET STRING or other simple type.
- * Put all the data into one entry.
- */
-
- /* Type no longer constructed. */
- type &= ~ASN_CONSTRUCTED;
- if (der != NULL) {
- /* Ensure space for type. */
- if (j + 1 >= outSz)
- return BUFFER_E;
- der[j] = type;
- }
- i++; j++;
- /* Skip indefinite length. */
- i++;
-
- /* There must be further ASN1 items to combine. */
- if (i + 2 > berSz)
- return ASN_PARSE_E;
-
- /* Calculate length of combined data. */
- len = 0;
- k = i;
- while (ber[k] != 0x00) {
- /* Each ASN item must be the same type as the constructed. */
- if (ber[k] != type)
- return ASN_PARSE_E;
- k++;
-
- ret = GetLength(ber, &k, &l, berSz);
- if (ret < 0)
- return ASN_PARSE_E;
- k += l;
- len += l;
-
- /* Must at least have terminating EOC. */
- if (k + 2 > berSz)
- return ASN_PARSE_E;
- }
- /* Ensure a valid EOC ASN item. */
- if (ber[k+1] != 0x00)
- return ASN_PARSE_E;
-
- if (der == NULL) {
- /* Add length of ASN item length encoding and data. */
- j += SetLength(len, lenBytes);
- j += len;
- }
- else {
- /* Check space for encoded length. */
- if (SetLength(len, lenBytes) > outSz - j)
- return BUFFER_E;
- /* Encode new length. */
- j += SetLength(len, der + j);
-
- /* Encode data in single item. */
- k = i;
- while (ber[k] != 0x00) {
- /* Skip ASN type. */
- k++;
-
- /* Find length of data in ASN item. */
- ret = GetLength(ber, &k, &l, berSz);
- if (ret < 0)
- return ASN_PARSE_E;
-
- /* Ensure space for data and copy in. */
- if (j + l > outSz)
- return BUFFER_E;
- XMEMCPY(der + j, ber + k, l);
- k += l; j += l;
- }
- }
- /* Continue conversion after EOC. */
- i = k + 2;
-
- continue;
- }
-
- if (der != NULL) {
- /* Ensure space for type and at least one byte of length. */
- if (j + 1 >= outSz)
- return BUFFER_E;
- /* Put in type. */
- der[j] = ber[i];
- }
- i++; j++;
-
- if (indef) {
- /* Skip indefinite length. */
- i++;
- /* Calculate the size of the data inside constructed. */
- ret = wc_BerToDer(ber + i, berSz - i, NULL, &sz);
- if (ret != LENGTH_ONLY_E)
- return ret;
-
- if (der != NULL) {
- /* Ensure space for encoded length. */
- if (SetLength(sz, lenBytes) > outSz - j)
- return BUFFER_E;
- /* Encode real length. */
- j += SetLength(sz, der + j);
- }
- else {
- /* Add size of encoded length. */
- j += SetLength(sz, lenBytes);
- }
-
- /* Another EOC to find. */
- depth++;
- }
- else {
- /* Get the size of the encode length and length value. */
- cnt = i;
- ret = GetLength(ber, &cnt, &len, berSz);
- if (ret < 0)
- return ASN_PARSE_E;
- cnt -= i;
-
- /* Check there is enough data to copy out. */
- if (i + cnt + len > berSz)
- return ASN_PARSE_E;
-
- if (der != NULL) {
- /* Ensure space in DER buffer. */
- if (j + cnt + len > outSz)
- return BUFFER_E;
- /* Copy length and data into DER buffer. */
- XMEMCPY(der + j, ber + i, cnt + len);
- }
- /* Continue conversion after this ASN item. */
- i += cnt + len;
- j += cnt + len;
- }
- }
-
- if (depth >= 1)
- return ASN_PARSE_E;
-
- /* Return length if no buffer to write to. */
- if (der == NULL) {
- *derSz = j;
- return LENGTH_ONLY_E;
- }
-
- return 0;
-}
-#endif
-
-#if defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN)
-
-#if (!defined(NO_RSA) && !defined(HAVE_USER_RSA)) || \
- defined(HAVE_ECC) || defined(HAVE_ED25519)
-
-#ifdef WOLFSSL_CERT_EXT
-/* Set the DER/BER encoding of the ASN.1 BIT_STRING with a 16-bit value.
- *
- * val 16-bit value to encode.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
-static word32 SetBitString16Bit(word16 val, byte* output)
-{
- word32 idx;
- int len;
- byte lastByte;
- byte unusedBits = 0;
-
- if ((val >> 8) != 0) {
- len = 2;
- lastByte = (byte)(val >> 8);
- }
- else {
- len = 1;
- lastByte = (byte)val;
- }
-
- while (((lastByte >> unusedBits) & 0x01) == 0x00)
- unusedBits++;
-
- idx = SetBitString(len, unusedBits, output);
- output[idx++] = (byte)val;
- if (len > 1)
- output[idx++] = (byte)(val >> 8);
-
- return idx;
-}
-#endif /* WOLFSSL_CERT_EXT */
-#endif /* !NO_RSA || HAVE_ECC || HAVE_ED25519 */
-#endif /* WOLFSSL_CERT_GEN || WOLFSSL_KEY_GEN */
-
-
-
-/* hashType */
-#ifdef WOLFSSL_MD2
- static const byte hashMd2hOid[] = {42, 134, 72, 134, 247, 13, 2, 2};
-#endif
-#ifndef NO_MD5
- static const byte hashMd5hOid[] = {42, 134, 72, 134, 247, 13, 2, 5};
-#endif
-#ifndef NO_SHA
- static const byte hashSha1hOid[] = {43, 14, 3, 2, 26};
-#endif
-#ifdef WOLFSSL_SHA224
- static const byte hashSha224hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 4};
-#endif
-#ifndef NO_SHA256
- static const byte hashSha256hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 1};
-#endif
-#ifdef WOLFSSL_SHA384
- static const byte hashSha384hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 2};
-#endif
-#ifdef WOLFSSL_SHA512
- static const byte hashSha512hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 3};
-#endif
-
-/* hmacType */
-#ifndef NO_HMAC
- #ifdef WOLFSSL_SHA224
- static const byte hmacSha224Oid[] = {42, 134, 72, 134, 247, 13, 2, 8};
- #endif
- #ifndef NO_SHA256
- static const byte hmacSha256Oid[] = {42, 134, 72, 134, 247, 13, 2, 9};
- #endif
- #ifdef WOLFSSL_SHA384
- static const byte hmacSha384Oid[] = {42, 134, 72, 134, 247, 13, 2, 10};
- #endif
- #ifdef WOLFSSL_SHA512
- static const byte hmacSha512Oid[] = {42, 134, 72, 134, 247, 13, 2, 11};
- #endif
-#endif
-
-/* sigType */
-#if !defined(NO_DSA) && !defined(NO_SHA)
- static const byte sigSha1wDsaOid[] = {42, 134, 72, 206, 56, 4, 3};
-#endif /* NO_DSA */
-#ifndef NO_RSA
- #ifdef WOLFSSL_MD2
- static const byte sigMd2wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 2};
- #endif
- #ifndef NO_MD5
- static const byte sigMd5wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 4};
- #endif
- #ifndef NO_SHA
- static const byte sigSha1wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 5};
- #endif
- #ifdef WOLFSSL_SHA224
- static const byte sigSha224wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,14};
- #endif
- #ifndef NO_SHA256
- static const byte sigSha256wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,11};
- #endif
- #ifdef WOLFSSL_SHA384
- static const byte sigSha384wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,12};
- #endif
- #ifdef WOLFSSL_SHA512
- static const byte sigSha512wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,13};
- #endif
-#endif /* NO_RSA */
-#ifdef HAVE_ECC
- #ifndef NO_SHA
- static const byte sigSha1wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 1};
- #endif
- #ifdef WOLFSSL_SHA224
- static const byte sigSha224wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 1};
- #endif
- #ifndef NO_SHA256
- static const byte sigSha256wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 2};
- #endif
- #ifdef WOLFSSL_SHA384
- static const byte sigSha384wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 3};
- #endif
- #ifdef WOLFSSL_SHA512
- static const byte sigSha512wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 4};
- #endif
-#endif /* HAVE_ECC */
-#ifdef HAVE_ED25519
- static const byte sigEd25519Oid[] = {43, 101, 112};
-#endif /* HAVE_ED25519 */
-
-/* keyType */
-#ifndef NO_DSA
- static const byte keyDsaOid[] = {42, 134, 72, 206, 56, 4, 1};
-#endif /* NO_DSA */
-#ifndef NO_RSA
- static const byte keyRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 1};
-#endif /* NO_RSA */
-#ifdef HAVE_NTRU
- static const byte keyNtruOid[] = {43, 6, 1, 4, 1, 193, 22, 1, 1, 1, 1};
-#endif /* HAVE_NTRU */
-#ifdef HAVE_ECC
- static const byte keyEcdsaOid[] = {42, 134, 72, 206, 61, 2, 1};
-#endif /* HAVE_ECC */
-#ifdef HAVE_ED25519
- static const byte keyEd25519Oid[] = {43, 101, 112};
-#endif /* HAVE_ED25519 */
-
-/* curveType */
-#ifdef HAVE_ECC
- /* See "ecc_sets" table in ecc.c */
-#endif /* HAVE_ECC */
-
-#ifdef HAVE_AES_CBC
-/* blkType */
- #ifdef WOLFSSL_AES_128
- static const byte blkAes128CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 2};
- #endif
- #ifdef WOLFSSL_AES_192
- static const byte blkAes192CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 22};
- #endif
- #ifdef WOLFSSL_AES_256
- static const byte blkAes256CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 42};
- #endif
-#endif /* HAVE_AES_CBC */
-
-#ifndef NO_DES3
- static const byte blkDesCbcOid[] = {43, 14, 3, 2, 7};
- static const byte blkDes3CbcOid[] = {42, 134, 72, 134, 247, 13, 3, 7};
-#endif
-
-/* keyWrapType */
-#ifdef WOLFSSL_AES_128
- static const byte wrapAes128Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 5};
-#endif
-#ifdef WOLFSSL_AES_192
- static const byte wrapAes192Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 25};
-#endif
-#ifdef WOLFSSL_AES_256
- static const byte wrapAes256Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 45};
-#endif
-
-/* cmsKeyAgreeType */
-#ifndef NO_SHA
- static const byte dhSinglePass_stdDH_sha1kdf_Oid[] =
- {43, 129, 5, 16, 134, 72, 63, 0, 2};
-#endif
-#ifdef WOLFSSL_SHA224
- static const byte dhSinglePass_stdDH_sha224kdf_Oid[] = {43, 129, 4, 1, 11, 0};
-#endif
-#ifndef NO_SHA256
- static const byte dhSinglePass_stdDH_sha256kdf_Oid[] = {43, 129, 4, 1, 11, 1};
-#endif
-#ifdef WOLFSSL_SHA384
- static const byte dhSinglePass_stdDH_sha384kdf_Oid[] = {43, 129, 4, 1, 11, 2};
-#endif
-#ifdef WOLFSSL_SHA512
- static const byte dhSinglePass_stdDH_sha512kdf_Oid[] = {43, 129, 4, 1, 11, 3};
-#endif
-
-/* ocspType */
-#ifdef HAVE_OCSP
- static const byte ocspBasicOid[] = {43, 6, 1, 5, 5, 7, 48, 1, 1};
- static const byte ocspNonceOid[] = {43, 6, 1, 5, 5, 7, 48, 1, 2};
-#endif /* HAVE_OCSP */
-
-/* certExtType */
-static const byte extBasicCaOid[] = {85, 29, 19};
-static const byte extAltNamesOid[] = {85, 29, 17};
-static const byte extCrlDistOid[] = {85, 29, 31};
-static const byte extAuthInfoOid[] = {43, 6, 1, 5, 5, 7, 1, 1};
-static const byte extAuthKeyOid[] = {85, 29, 35};
-static const byte extSubjKeyOid[] = {85, 29, 14};
-static const byte extCertPolicyOid[] = {85, 29, 32};
-static const byte extKeyUsageOid[] = {85, 29, 15};
-static const byte extInhibitAnyOid[] = {85, 29, 54};
-static const byte extExtKeyUsageOid[] = {85, 29, 37};
-#ifndef IGNORE_NAME_CONSTRAINTS
- static const byte extNameConsOid[] = {85, 29, 30};
-#endif
-
-/* certAuthInfoType */
-#ifdef HAVE_OCSP
- static const byte extAuthInfoOcspOid[] = {43, 6, 1, 5, 5, 7, 48, 1};
-#endif
-static const byte extAuthInfoCaIssuerOid[] = {43, 6, 1, 5, 5, 7, 48, 2};
-
-/* certPolicyType */
-static const byte extCertPolicyAnyOid[] = {85, 29, 32, 0};
-
-/* certKeyUseType */
-static const byte extAltNamesHwNameOid[] = {43, 6, 1, 5, 5, 7, 8, 4};
-
-/* certKeyUseType */
-static const byte extExtKeyUsageAnyOid[] = {85, 29, 37, 0};
-static const byte extExtKeyUsageServerAuthOid[] = {43, 6, 1, 5, 5, 7, 3, 1};
-static const byte extExtKeyUsageClientAuthOid[] = {43, 6, 1, 5, 5, 7, 3, 2};
-static const byte extExtKeyUsageCodeSigningOid[] = {43, 6, 1, 5, 5, 7, 3, 3};
-static const byte extExtKeyUsageEmailProtectOid[] = {43, 6, 1, 5, 5, 7, 3, 4};
-static const byte extExtKeyUsageTimestampOid[] = {43, 6, 1, 5, 5, 7, 3, 8};
-static const byte extExtKeyUsageOcspSignOid[] = {43, 6, 1, 5, 5, 7, 3, 9};
-
-/* kdfType */
-static const byte pbkdf2Oid[] = {42, 134, 72, 134, 247, 13, 1, 5, 12};
-
-/* PKCS5 */
-#if !defined(NO_DES3) && !defined(NO_SHA)
-static const byte pbeSha1Des[] = {42, 134, 72, 134, 247, 13, 1, 5, 10};
-#endif
-
-/* PKCS12 */
-#if !defined(NO_RC4) && !defined(NO_SHA)
-static const byte pbeSha1RC4128[] = {42, 134, 72, 134, 247, 13, 1, 12, 1, 1};
-#endif
-#if !defined(NO_DES3) && !defined(NO_SHA)
-static const byte pbeSha1Des3[] = {42, 134, 72, 134, 247, 13, 1, 12, 1, 3};
-#endif
-
-
-/* returns a pointer to the OID string on success and NULL on fail */
-const byte* OidFromId(word32 id, word32 type, word32* oidSz)
-{
- const byte* oid = NULL;
-
- *oidSz = 0;
-
- switch (type) {
-
- case oidHashType:
- switch (id) {
- #ifdef WOLFSSL_MD2
- case MD2h:
- oid = hashMd2hOid;
- *oidSz = sizeof(hashMd2hOid);
- break;
- #endif
- #ifndef NO_MD5
- case MD5h:
- oid = hashMd5hOid;
- *oidSz = sizeof(hashMd5hOid);
- break;
- #endif
- #ifndef NO_SHA
- case SHAh:
- oid = hashSha1hOid;
- *oidSz = sizeof(hashSha1hOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA224
- case SHA224h:
- oid = hashSha224hOid;
- *oidSz = sizeof(hashSha224hOid);
- break;
- #endif
- #ifndef NO_SHA256
- case SHA256h:
- oid = hashSha256hOid;
- *oidSz = sizeof(hashSha256hOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case SHA384h:
- oid = hashSha384hOid;
- *oidSz = sizeof(hashSha384hOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case SHA512h:
- oid = hashSha512hOid;
- *oidSz = sizeof(hashSha512hOid);
- break;
- #endif
- }
- break;
-
- case oidSigType:
- switch (id) {
- #if !defined(NO_DSA) && !defined(NO_SHA)
- case CTC_SHAwDSA:
- oid = sigSha1wDsaOid;
- *oidSz = sizeof(sigSha1wDsaOid);
- break;
- #endif /* NO_DSA */
- #ifndef NO_RSA
- #ifdef WOLFSSL_MD2
- case CTC_MD2wRSA:
- oid = sigMd2wRsaOid;
- *oidSz = sizeof(sigMd2wRsaOid);
- break;
- #endif
- #ifndef NO_MD5
- case CTC_MD5wRSA:
- oid = sigMd5wRsaOid;
- *oidSz = sizeof(sigMd5wRsaOid);
- break;
- #endif
- #ifndef NO_SHA
- case CTC_SHAwRSA:
- oid = sigSha1wRsaOid;
- *oidSz = sizeof(sigSha1wRsaOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA224
- case CTC_SHA224wRSA:
- oid = sigSha224wRsaOid;
- *oidSz = sizeof(sigSha224wRsaOid);
- break;
- #endif
- #ifndef NO_SHA256
- case CTC_SHA256wRSA:
- oid = sigSha256wRsaOid;
- *oidSz = sizeof(sigSha256wRsaOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case CTC_SHA384wRSA:
- oid = sigSha384wRsaOid;
- *oidSz = sizeof(sigSha384wRsaOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case CTC_SHA512wRSA:
- oid = sigSha512wRsaOid;
- *oidSz = sizeof(sigSha512wRsaOid);
- break;
- #endif /* WOLFSSL_SHA512 */
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- #ifndef NO_SHA
- case CTC_SHAwECDSA:
- oid = sigSha1wEcdsaOid;
- *oidSz = sizeof(sigSha1wEcdsaOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA224
- case CTC_SHA224wECDSA:
- oid = sigSha224wEcdsaOid;
- *oidSz = sizeof(sigSha224wEcdsaOid);
- break;
- #endif
- #ifndef NO_SHA256
- case CTC_SHA256wECDSA:
- oid = sigSha256wEcdsaOid;
- *oidSz = sizeof(sigSha256wEcdsaOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case CTC_SHA384wECDSA:
- oid = sigSha384wEcdsaOid;
- *oidSz = sizeof(sigSha384wEcdsaOid);
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case CTC_SHA512wECDSA:
- oid = sigSha512wEcdsaOid;
- *oidSz = sizeof(sigSha512wEcdsaOid);
- break;
- #endif
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case CTC_ED25519:
- oid = sigEd25519Oid;
- *oidSz = sizeof(sigEd25519Oid);
- break;
- #endif
- default:
- break;
- }
- break;
-
- case oidKeyType:
- switch (id) {
- #ifndef NO_DSA
- case DSAk:
- oid = keyDsaOid;
- *oidSz = sizeof(keyDsaOid);
- break;
- #endif /* NO_DSA */
- #ifndef NO_RSA
- case RSAk:
- oid = keyRsaOid;
- *oidSz = sizeof(keyRsaOid);
- break;
- #endif /* NO_RSA */
- #ifdef HAVE_NTRU
- case NTRUk:
- oid = keyNtruOid;
- *oidSz = sizeof(keyNtruOid);
- break;
- #endif /* HAVE_NTRU */
- #ifdef HAVE_ECC
- case ECDSAk:
- oid = keyEcdsaOid;
- *oidSz = sizeof(keyEcdsaOid);
- break;
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- oid = keyEd25519Oid;
- *oidSz = sizeof(keyEd25519Oid);
- break;
- #endif /* HAVE_ED25519 */
- default:
- break;
- }
- break;
-
- #ifdef HAVE_ECC
- case oidCurveType:
- if (wc_ecc_get_oid(id, &oid, oidSz) < 0) {
- WOLFSSL_MSG("ECC OID not found");
- }
- break;
- #endif /* HAVE_ECC */
-
- case oidBlkType:
- switch (id) {
- #ifdef HAVE_AES_CBC
- #ifdef WOLFSSL_AES_128
- case AES128CBCb:
- oid = blkAes128CbcOid;
- *oidSz = sizeof(blkAes128CbcOid);
- break;
- #endif
- #ifdef WOLFSSL_AES_192
- case AES192CBCb:
- oid = blkAes192CbcOid;
- *oidSz = sizeof(blkAes192CbcOid);
- break;
- #endif
- #ifdef WOLFSSL_AES_256
- case AES256CBCb:
- oid = blkAes256CbcOid;
- *oidSz = sizeof(blkAes256CbcOid);
- break;
- #endif
- #endif /* HAVE_AES_CBC */
- #ifndef NO_DES3
- case DESb:
- oid = blkDesCbcOid;
- *oidSz = sizeof(blkDesCbcOid);
- break;
- case DES3b:
- oid = blkDes3CbcOid;
- *oidSz = sizeof(blkDes3CbcOid);
- break;
- #endif /* !NO_DES3 */
- }
- break;
-
- #ifdef HAVE_OCSP
- case oidOcspType:
- switch (id) {
- case OCSP_BASIC_OID:
- oid = ocspBasicOid;
- *oidSz = sizeof(ocspBasicOid);
- break;
- case OCSP_NONCE_OID:
- oid = ocspNonceOid;
- *oidSz = sizeof(ocspNonceOid);
- break;
- }
- break;
- #endif /* HAVE_OCSP */
-
- case oidCertExtType:
- switch (id) {
- case BASIC_CA_OID:
- oid = extBasicCaOid;
- *oidSz = sizeof(extBasicCaOid);
- break;
- case ALT_NAMES_OID:
- oid = extAltNamesOid;
- *oidSz = sizeof(extAltNamesOid);
- break;
- case CRL_DIST_OID:
- oid = extCrlDistOid;
- *oidSz = sizeof(extCrlDistOid);
- break;
- case AUTH_INFO_OID:
- oid = extAuthInfoOid;
- *oidSz = sizeof(extAuthInfoOid);
- break;
- case AUTH_KEY_OID:
- oid = extAuthKeyOid;
- *oidSz = sizeof(extAuthKeyOid);
- break;
- case SUBJ_KEY_OID:
- oid = extSubjKeyOid;
- *oidSz = sizeof(extSubjKeyOid);
- break;
- case CERT_POLICY_OID:
- oid = extCertPolicyOid;
- *oidSz = sizeof(extCertPolicyOid);
- break;
- case KEY_USAGE_OID:
- oid = extKeyUsageOid;
- *oidSz = sizeof(extKeyUsageOid);
- break;
- case INHIBIT_ANY_OID:
- oid = extInhibitAnyOid;
- *oidSz = sizeof(extInhibitAnyOid);
- break;
- case EXT_KEY_USAGE_OID:
- oid = extExtKeyUsageOid;
- *oidSz = sizeof(extExtKeyUsageOid);
- break;
- #ifndef IGNORE_NAME_CONSTRAINTS
- case NAME_CONS_OID:
- oid = extNameConsOid;
- *oidSz = sizeof(extNameConsOid);
- break;
- #endif
- }
- break;
-
- case oidCertAuthInfoType:
- switch (id) {
- #ifdef HAVE_OCSP
- case AIA_OCSP_OID:
- oid = extAuthInfoOcspOid;
- *oidSz = sizeof(extAuthInfoOcspOid);
- break;
- #endif
- case AIA_CA_ISSUER_OID:
- oid = extAuthInfoCaIssuerOid;
- *oidSz = sizeof(extAuthInfoCaIssuerOid);
- break;
- }
- break;
-
- case oidCertPolicyType:
- switch (id) {
- case CP_ANY_OID:
- oid = extCertPolicyAnyOid;
- *oidSz = sizeof(extCertPolicyAnyOid);
- break;
- }
- break;
-
- case oidCertAltNameType:
- switch (id) {
- case HW_NAME_OID:
- oid = extAltNamesHwNameOid;
- *oidSz = sizeof(extAltNamesHwNameOid);
- break;
- }
- break;
-
- case oidCertKeyUseType:
- switch (id) {
- case EKU_ANY_OID:
- oid = extExtKeyUsageAnyOid;
- *oidSz = sizeof(extExtKeyUsageAnyOid);
- break;
- case EKU_SERVER_AUTH_OID:
- oid = extExtKeyUsageServerAuthOid;
- *oidSz = sizeof(extExtKeyUsageServerAuthOid);
- break;
- case EKU_CLIENT_AUTH_OID:
- oid = extExtKeyUsageClientAuthOid;
- *oidSz = sizeof(extExtKeyUsageClientAuthOid);
- break;
- case EKU_CODESIGNING_OID:
- oid = extExtKeyUsageCodeSigningOid;
- *oidSz = sizeof(extExtKeyUsageCodeSigningOid);
- break;
- case EKU_EMAILPROTECT_OID:
- oid = extExtKeyUsageEmailProtectOid;
- *oidSz = sizeof(extExtKeyUsageEmailProtectOid);
- break;
- case EKU_TIMESTAMP_OID:
- oid = extExtKeyUsageTimestampOid;
- *oidSz = sizeof(extExtKeyUsageTimestampOid);
- break;
- case EKU_OCSP_SIGN_OID:
- oid = extExtKeyUsageOcspSignOid;
- *oidSz = sizeof(extExtKeyUsageOcspSignOid);
- break;
- }
- break;
-
- case oidKdfType:
- switch (id) {
- case PBKDF2_OID:
- oid = pbkdf2Oid;
- *oidSz = sizeof(pbkdf2Oid);
- break;
- }
- break;
-
- case oidPBEType:
- switch (id) {
- #if !defined(NO_SHA) && !defined(NO_RC4)
- case PBE_SHA1_RC4_128:
- oid = pbeSha1RC4128;
- *oidSz = sizeof(pbeSha1RC4128);
- break;
- #endif
- #if !defined(NO_SHA) && !defined(NO_DES3)
- case PBE_SHA1_DES:
- oid = pbeSha1Des;
- *oidSz = sizeof(pbeSha1Des);
- break;
-
- #endif
- #if !defined(NO_SHA) && !defined(NO_DES3)
- case PBE_SHA1_DES3:
- oid = pbeSha1Des3;
- *oidSz = sizeof(pbeSha1Des3);
- break;
- #endif
- }
- break;
-
- case oidKeyWrapType:
- switch (id) {
- #ifdef WOLFSSL_AES_128
- case AES128_WRAP:
- oid = wrapAes128Oid;
- *oidSz = sizeof(wrapAes128Oid);
- break;
- #endif
- #ifdef WOLFSSL_AES_192
- case AES192_WRAP:
- oid = wrapAes192Oid;
- *oidSz = sizeof(wrapAes192Oid);
- break;
- #endif
- #ifdef WOLFSSL_AES_256
- case AES256_WRAP:
- oid = wrapAes256Oid;
- *oidSz = sizeof(wrapAes256Oid);
- break;
- #endif
- }
- break;
-
- case oidCmsKeyAgreeType:
- switch (id) {
- #ifndef NO_SHA
- case dhSinglePass_stdDH_sha1kdf_scheme:
- oid = dhSinglePass_stdDH_sha1kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha1kdf_Oid);
- break;
- #endif
- #ifdef WOLFSSL_SHA224
- case dhSinglePass_stdDH_sha224kdf_scheme:
- oid = dhSinglePass_stdDH_sha224kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha224kdf_Oid);
- break;
- #endif
- #ifndef NO_SHA256
- case dhSinglePass_stdDH_sha256kdf_scheme:
- oid = dhSinglePass_stdDH_sha256kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha256kdf_Oid);
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case dhSinglePass_stdDH_sha384kdf_scheme:
- oid = dhSinglePass_stdDH_sha384kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha384kdf_Oid);
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case dhSinglePass_stdDH_sha512kdf_scheme:
- oid = dhSinglePass_stdDH_sha512kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha512kdf_Oid);
- break;
- #endif
- }
- break;
-
-#ifndef NO_HMAC
- case oidHmacType:
- switch (id) {
- #ifdef WOLFSSL_SHA224
- case HMAC_SHA224_OID:
- oid = hmacSha224Oid;
- *oidSz = sizeof(hmacSha224Oid);
- break;
- #endif
- #ifndef NO_SHA256
- case HMAC_SHA256_OID:
- oid = hmacSha256Oid;
- *oidSz = sizeof(hmacSha256Oid);
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case HMAC_SHA384_OID:
- oid = hmacSha384Oid;
- *oidSz = sizeof(hmacSha384Oid);
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case HMAC_SHA512_OID:
- oid = hmacSha512Oid;
- *oidSz = sizeof(hmacSha512Oid);
- break;
- #endif
- }
- break;
-#endif /* !NO_HMAC */
-
- case oidIgnoreType:
- default:
- break;
- }
-
- return oid;
-}
-
-#ifdef HAVE_OID_ENCODING
-int EncodeObjectId(const word16* in, word32 inSz, byte* out, word32* outSz)
-{
- int i, x, len;
- word32 d, t;
-
- /* check args */
- if (in == NULL || outSz == NULL) {
- return BAD_FUNC_ARG;
- }
-
- /* compute length of encoded OID */
- d = (in[0] * 40) + in[1];
- len = 0;
- for (i = 1; i < (int)inSz; i++) {
- x = 0;
- t = d;
- while (t) {
- x++;
- t >>= 1;
- }
- len += (x / 7) + ((x % 7) ? 1 : 0) + (d == 0 ? 1 : 0);
-
- if (i < (int)inSz - 1) {
- d = in[i + 1];
- }
- }
-
- if (out) {
- /* verify length */
- if ((int)*outSz < len) {
- return BUFFER_E; /* buffer provided is not large enough */
- }
-
- /* calc first byte */
- d = (in[0] * 40) + in[1];
-
- /* encode bytes */
- x = 0;
- for (i = 1; i < (int)inSz; i++) {
- if (d) {
- int y = x, z;
- byte mask = 0;
- while (d) {
- out[x++] = (byte)((d & 0x7F) | mask);
- d >>= 7;
- mask |= 0x80; /* upper bit is set on all but the last byte */
- }
- /* now swap bytes y...x-1 */
- z = x - 1;
- while (y < z) {
- mask = out[y];
- out[y] = out[z];
- out[z] = mask;
- ++y;
- --z;
- }
- }
- else {
- out[x++] = 0x00; /* zero value */
- }
-
- /* next word */
- if (i < (int)inSz - 1) {
- d = in[i + 1];
- }
- }
- }
-
- /* return length */
- *outSz = len;
-
- return 0;
-}
-#endif /* HAVE_OID_ENCODING */
-
-#ifdef HAVE_OID_DECODING
-int DecodeObjectId(const byte* in, word32 inSz, word16* out, word32* outSz)
-{
- int x = 0, y = 0;
- word32 t = 0;
-
- /* check args */
- if (in == NULL || outSz == NULL) {
- return BAD_FUNC_ARG;
- }
-
- /* decode bytes */
- while (inSz--) {
- t = (t << 7) | (in[x] & 0x7F);
- if (!(in[x] & 0x80)) {
- if (y >= (int)*outSz) {
- return BUFFER_E;
- }
- if (y == 0) {
- out[0] = (t / 40);
- out[1] = (t % 40);
- y = 2;
- }
- else {
- out[y++] = t;
- }
- t = 0; /* reset tmp */
- }
- x++;
- }
-
- /* return length */
- *outSz = y;
-
- return 0;
-}
-#endif /* HAVE_OID_DECODING */
-
-/* Get the DER/BER encoding of an ASN.1 OBJECT_ID header.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_OBJECt_ID_E when the OBJECT_ID tag is not found.
- * ASN_PARSE_E when length is invalid.
- * Otherwise, 0 to indicate success.
- */
-static int GetASNObjectId(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- byte b;
- int length;
-
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
-
- b = input[idx++];
- if (b != ASN_OBJECT_ID)
- return ASN_OBJECT_ID_E;
-
- if (GetLength(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
-
- *len = length;
- *inOutIdx = idx;
- return 0;
-}
-
-/* Set the DER/BER encoding of the ASN.1 OBJECT_ID header.
- *
- * len Length of the OBJECT_ID data.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
-static int SetObjectId(int len, byte* output)
-{
- int idx = 0;
-
- output[idx++] = ASN_OBJECT_ID;
- idx += SetLength(len, output + idx);
-
- return idx;
-}
-
-int GetObjectId(const byte* input, word32* inOutIdx, word32* oid,
- word32 oidType, word32 maxIdx)
-{
- int ret = 0, length;
- word32 idx = *inOutIdx;
-#ifndef NO_VERIFY_OID
- word32 actualOidSz = 0;
- const byte* actualOid;
-#endif /* NO_VERIFY_OID */
-
- (void)oidType;
- WOLFSSL_ENTER("GetObjectId()");
- *oid = 0;
-
- ret = GetASNObjectId(input, &idx, &length, maxIdx);
- if (ret != 0)
- return ret;
-
-#ifndef NO_VERIFY_OID
- actualOid = &input[idx];
- if (length > 0)
- actualOidSz = (word32)length;
-#endif /* NO_VERIFY_OID */
-
- while (length--) {
- /* odd HC08 compiler behavior here when input[idx++] */
- *oid += (word32)input[idx];
- idx++;
- }
- /* just sum it up for now */
-
- *inOutIdx = idx;
-
-#ifndef NO_VERIFY_OID
- {
- const byte* checkOid = NULL;
- word32 checkOidSz;
- #ifdef ASN_DUMP_OID
- word32 i;
- #endif
-
- if (oidType != oidIgnoreType) {
- checkOid = OidFromId(*oid, oidType, &checkOidSz);
-
- #ifdef ASN_DUMP_OID
- /* support for dumping OID information */
- printf("OID (Type %d, Sz %d, Sum %d): ", oidType, actualOidSz, *oid);
- for (i=0; i<actualOidSz; i++) {
- printf("%d, ", actualOid[i]);
- }
- printf("\n");
- #ifdef HAVE_OID_DECODING
- {
- word16 decOid[16];
- word32 decOidSz = sizeof(decOid);
- ret = DecodeObjectId(actualOid, actualOidSz, decOid, &decOidSz);
- if (ret == 0) {
- printf(" Decoded (Sz %d): ", decOidSz);
- for (i=0; i<decOidSz; i++) {
- printf("%d.", decOid[i]);
- }
- printf("\n");
- }
- else {
- printf("DecodeObjectId failed: %d\n", ret);
- }
- }
- #endif /* HAVE_OID_DECODING */
- #endif /* ASN_DUMP_OID */
-
- if (checkOid != NULL &&
- (checkOidSz != actualOidSz ||
- XMEMCMP(actualOid, checkOid, checkOidSz) != 0)) {
- WOLFSSL_MSG("OID Check Failed");
- return ASN_UNKNOWN_OID_E;
- }
- }
- }
-#endif /* NO_VERIFY_OID */
-
- return ret;
-}
-
-static int SkipObjectId(const byte* input, word32* inOutIdx, word32 maxIdx)
-{
- word32 idx = *inOutIdx;
- int length;
- int ret;
-
- ret = GetASNObjectId(input, &idx, &length, maxIdx);
- if (ret != 0)
- return ret;
-
- idx += length;
- *inOutIdx = idx;
-
- return 0;
-}
-
-WOLFSSL_LOCAL int GetAlgoId(const byte* input, word32* inOutIdx, word32* oid,
- word32 oidType, word32 maxIdx)
-{
- int length;
- word32 idx = *inOutIdx;
- int ret;
- *oid = 0;
-
- WOLFSSL_ENTER("GetAlgoId");
-
- if (GetSequence(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
-
- if (GetObjectId(input, &idx, oid, oidType, maxIdx) < 0)
- return ASN_OBJECT_ID_E;
-
- /* could have NULL tag and 0 terminator, but may not */
- if (idx < maxIdx && input[idx] == ASN_TAG_NULL) {
- ret = GetASNNull(input, &idx, maxIdx);
- if (ret != 0)
- return ret;
- }
-
- *inOutIdx = idx;
-
- return 0;
-}
-
-#ifndef NO_RSA
-
-#ifndef HAVE_USER_RSA
-int wc_RsaPrivateKeyDecode(const byte* input, word32* inOutIdx, RsaKey* key,
- word32 inSz)
-{
- int version, length;
-
- if (inOutIdx == NULL) {
- return BAD_FUNC_ARG;
- }
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
-
- key->type = RSA_PRIVATE;
-
- if (GetInt(&key->n, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->e, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->d, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->q, input, inOutIdx, inSz) < 0) return ASN_RSA_KEY_E;
-#if defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA) || !defined(RSA_LOW_MEM)
- if (GetInt(&key->dP, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->dQ, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->u, input, inOutIdx, inSz) < 0 ) return ASN_RSA_KEY_E;
-#else
- if (SkipInt(input, inOutIdx, inSz) < 0 ||
- SkipInt(input, inOutIdx, inSz) < 0 ||
- SkipInt(input, inOutIdx, inSz) < 0 ) return ASN_RSA_KEY_E;
-#endif
-
-#ifdef WOLFSSL_XILINX_CRYPT
- if (wc_InitRsaHw(key) != 0) {
- return BAD_STATE_E;
- }
-#endif
-
- return 0;
-}
-#endif /* HAVE_USER_RSA */
-#endif /* NO_RSA */
-
-/* Remove PKCS8 header, place inOutIdx at beginning of traditional,
- * return traditional length on success, negative on error */
-int ToTraditionalInline(const byte* input, word32* inOutIdx, word32 sz)
-{
- word32 idx, oid;
- int version, length;
- int ret;
-
- if (input == NULL || inOutIdx == NULL)
- return BAD_FUNC_ARG;
-
- idx = *inOutIdx;
-
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- if (GetMyVersion(input, &idx, &version, sz) < 0)
- return ASN_PARSE_E;
-
- if (GetAlgoId(input, &idx, &oid, oidKeyType, sz) < 0)
- return ASN_PARSE_E;
-
- if (input[idx] == ASN_OBJECT_ID) {
- if (SkipObjectId(input, &idx, sz) < 0)
- return ASN_PARSE_E;
- }
-
- ret = GetOctetString(input, &idx, &length, sz);
- if (ret < 0)
- return ret;
-
- *inOutIdx = idx;
-
- return length;
-}
-
-/* Remove PKCS8 header, move beginning of traditional to beginning of input */
-int ToTraditional(byte* input, word32 sz)
-{
- word32 inOutIdx = 0;
- int length;
-
- if (input == NULL)
- return BAD_FUNC_ARG;
-
- length = ToTraditionalInline(input, &inOutIdx, sz);
- if (length < 0)
- return length;
-
- XMEMMOVE(input, input + inOutIdx, length);
-
- return length;
-}
-
-
-/* find beginning of traditional key inside PKCS#8 unencrypted buffer
- * return traditional length on success, with inOutIdx at beginning of
- * traditional
- * return negative on failure/error */
-int wc_GetPkcs8TraditionalOffset(byte* input, word32* inOutIdx, word32 sz)
-{
- int length;
-
- if (input == NULL || inOutIdx == NULL || (*inOutIdx > sz))
- return BAD_FUNC_ARG;
-
- length = ToTraditionalInline(input, inOutIdx, sz);
-
- return length;
-}
-
-
-/* PKCS#8 from RFC 5208
- * This function takes in a DER key and converts it to PKCS#8 format. Used
- * in creating PKCS#12 shrouded key bags.
- * Reverse of ToTraditional
- *
- * PrivateKeyInfo ::= SEQUENCE {
- * version Version,
- * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier,
- * privateKey PrivateKey,
- * attributes optional
- * }
- * Version ::= INTEGER
- * PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier
- * PrivateKey ::= OCTET STRING
- *
- * out buffer to place result in
- * outSz size of out buffer
- * key buffer with DER key
- * keySz size of key buffer
- * algoID algorithm ID i.e. RSAk
- * curveOID ECC curve oid if used. Should be NULL for RSA keys.
- * oidSz size of curve oid. Is set to 0 if curveOID is NULL.
- *
- * Returns the size of PKCS#8 placed into out. In error cases returns negative
- * values.
- */
-int wc_CreatePKCS8Key(byte* out, word32* outSz, byte* key, word32 keySz,
- int algoID, const byte* curveOID, word32 oidSz)
-{
- word32 keyIdx = 0;
- word32 tmpSz = 0;
- word32 sz;
-
-
- /* If out is NULL then return the max size needed
- * + 2 for ASN_OBJECT_ID and ASN_OCTET_STRING tags */
- if (out == NULL && outSz != NULL) {
- *outSz = keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
- + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 2;
-
- if (curveOID != NULL)
- *outSz += oidSz + MAX_LENGTH_SZ + 1;
-
- WOLFSSL_MSG("Checking size of PKCS8");
-
- return LENGTH_ONLY_E;
- }
-
- WOLFSSL_ENTER("wc_CreatePKCS8Key()");
-
- if (key == NULL || out == NULL || outSz == NULL) {
- return BAD_FUNC_ARG;
- }
-
- /* check the buffer has enough room for largest possible size */
- if (curveOID != NULL) {
- if (*outSz < (keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
- + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 3 + oidSz + MAX_LENGTH_SZ))
- return BUFFER_E;
- }
- else {
- oidSz = 0; /* with no curveOID oid size must be 0 */
- if (*outSz < (keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
- + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 2))
- return BUFFER_E;
- }
-
- /* PrivateKeyInfo ::= SEQUENCE */
- keyIdx += MAX_SEQ_SZ; /* save room for sequence */
-
- /* version Version
- * no header information just INTEGER */
- sz = SetMyVersion(PKCS8v0, out + keyIdx, 0);
- tmpSz += sz; keyIdx += sz;
-
- /* privateKeyAlgorithm PrivateKeyAlgorithmIdentifier */
- sz = 0; /* set sz to 0 and get privateKey oid buffer size needed */
- if (curveOID != NULL && oidSz > 0) {
- byte buf[MAX_LENGTH_SZ];
- sz = SetLength(oidSz, buf);
- sz += 1; /* plus one for ASN object id */
- }
- sz = SetAlgoID(algoID, out + keyIdx, oidKeyType, oidSz + sz);
- tmpSz += sz; keyIdx += sz;
-
- /* privateKey PrivateKey *
- * pkcs8 ecc uses slightly different format. Places curve oid in
- * buffer */
- if (curveOID != NULL && oidSz > 0) {
- sz = SetObjectId(oidSz, out + keyIdx);
- keyIdx += sz; tmpSz += sz;
- XMEMCPY(out + keyIdx, curveOID, oidSz);
- keyIdx += oidSz; tmpSz += oidSz;
- }
-
- sz = SetOctetString(keySz, out + keyIdx);
- keyIdx += sz; tmpSz += sz;
- XMEMCPY(out + keyIdx, key, keySz);
- tmpSz += keySz;
-
- /* attributes optional
- * No attributes currently added */
-
- /* rewind and add sequence */
- sz = SetSequence(tmpSz, out);
- XMEMMOVE(out + sz, out + MAX_SEQ_SZ, tmpSz);
-
- return tmpSz + sz;
-}
-
-
-/* check that the private key is a pair for the public key in certificate
- * return 1 (true) on match
- * return 0 or negative value on failure/error
- *
- * key : buffer holding DER fromat key
- * keySz : size of key buffer
- * der : a initialized and parsed DecodedCert holding a certificate */
-int wc_CheckPrivateKey(byte* key, word32 keySz, DecodedCert* der)
-{
- int ret;
- (void)keySz;
-
- if (key == NULL || der == NULL) {
- return BAD_FUNC_ARG;
- }
-
- #if !defined(NO_RSA)
- /* test if RSA key */
- if (der->keyOID == RSAk) {
- #ifdef WOLFSSL_SMALL_STACK
- RsaKey* a = NULL;
- RsaKey* b = NULL;
- #else
- RsaKey a[1], b[1];
- #endif
- word32 keyIdx = 0;
-
- #ifdef WOLFSSL_SMALL_STACK
- a = (RsaKey*)XMALLOC(sizeof(RsaKey), NULL, DYNAMIC_TYPE_RSA);
- if (a == NULL)
- return MEMORY_E;
- b = (RsaKey*)XMALLOC(sizeof(RsaKey), NULL, DYNAMIC_TYPE_RSA);
- if (b == NULL) {
- XFREE(a, NULL, DYNAMIC_TYPE_RSA);
- return MEMORY_E;
- }
- #endif
-
- if ((ret = wc_InitRsaKey(a, NULL)) < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(b, NULL, DYNAMIC_TYPE_RSA);
- XFREE(a, NULL, DYNAMIC_TYPE_RSA);
- #endif
- return ret;
- }
- if ((ret = wc_InitRsaKey(b, NULL)) < 0) {
- wc_FreeRsaKey(a);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(b, NULL, DYNAMIC_TYPE_RSA);
- XFREE(a, NULL, DYNAMIC_TYPE_RSA);
- #endif
- return ret;
- }
- if ((ret = wc_RsaPrivateKeyDecode(key, &keyIdx, a, keySz)) == 0) {
- WOLFSSL_MSG("Checking RSA key pair");
- keyIdx = 0; /* reset to 0 for parsing public key */
-
- if ((ret = wc_RsaPublicKeyDecode(der->publicKey, &keyIdx, b,
- der->pubKeySize)) == 0) {
- /* limit for user RSA crypto because of RsaKey
- * dereference. */
- #if defined(HAVE_USER_RSA)
- WOLFSSL_MSG("Cannot verify RSA pair with user RSA");
- ret = 1; /* return first RSA cert as match */
- #else
- /* both keys extracted successfully now check n and e
- * values are the same. This is dereferencing RsaKey */
- if (mp_cmp(&(a->n), &(b->n)) != MP_EQ ||
- mp_cmp(&(a->e), &(b->e)) != MP_EQ) {
- ret = MP_CMP_E;
- }
- else
- ret = 1;
- #endif
- }
- }
- wc_FreeRsaKey(b);
- wc_FreeRsaKey(a);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(b, NULL, DYNAMIC_TYPE_RSA);
- XFREE(a, NULL, DYNAMIC_TYPE_RSA);
- #endif
- }
- else
- #endif /* NO_RSA */
-
- #ifdef HAVE_ECC
- if (der->keyOID == ECDSAk) {
- #ifdef WOLFSSL_SMALL_STACK
- ecc_key* key_pair = NULL;
- byte* privDer;
- #else
- ecc_key key_pair[1];
- byte privDer[MAX_ECC_BYTES];
- #endif
- word32 privSz = MAX_ECC_BYTES;
- word32 keyIdx = 0;
-
- #ifdef WOLFSSL_SMALL_STACK
- key_pair = (ecc_key*)XMALLOC(sizeof(ecc_key), NULL, DYNAMIC_TYPE_ECC);
- if (key_pair == NULL)
- return MEMORY_E;
- privDer = (byte*)XMALLOC(MAX_ECC_BYTES, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (privDer == NULL) {
- XFREE(key_pair, NULL, DYNAMIC_TYPE_ECC);
- return MEMORY_E;
- }
- #endif
-
- if ((ret = wc_ecc_init(key_pair)) < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(privDer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(key_pair, NULL, DYNAMIC_TYPE_ECC);
- #endif
- return ret;
- }
-
- if ((ret = wc_EccPrivateKeyDecode(key, &keyIdx, key_pair,
- keySz)) == 0) {
- WOLFSSL_MSG("Checking ECC key pair");
-
- if ((ret = wc_ecc_export_private_only(key_pair, privDer, &privSz))
- == 0) {
- wc_ecc_free(key_pair);
- ret = wc_ecc_init(key_pair);
- if (ret == 0) {
- ret = wc_ecc_import_private_key((const byte*)privDer,
- privSz, (const byte*)der->publicKey,
- der->pubKeySize, key_pair);
- }
-
- /* public and private extracted successfuly now check if is
- * a pair and also do sanity checks on key. wc_ecc_check_key
- * checks that private * base generator equals pubkey */
- if (ret == 0) {
- if ((ret = wc_ecc_check_key(key_pair)) == 0) {
- ret = 1;
- }
- }
- ForceZero(privDer, privSz);
- }
- }
- wc_ecc_free(key_pair);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(privDer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(key_pair, NULL, DYNAMIC_TYPE_ECC);
- #endif
- }
- else
- #endif /* HAVE_ECC */
-
- #ifdef HAVE_ED25519
- if (der->keyOID == ED25519k) {
- #ifdef WOLFSSL_SMALL_STACK
- ed25519_key* key_pair = NULL;
- #else
- ed25519_key key_pair[1];
- #endif
- word32 keyIdx = 0;
-
- #ifdef WOLFSSL_SMALL_STACK
- key_pair = (ed25519_key*)XMALLOC(sizeof(ed25519_key), NULL,
- DYNAMIC_TYPE_ED25519);
- if (key_pair == NULL)
- return MEMORY_E;
- #endif
-
- if ((ret = wc_ed25519_init(key_pair)) < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key_pair, NULL, DYNAMIC_TYPE_ED25519);
- #endif
- return ret;
- }
- if ((ret = wc_Ed25519PrivateKeyDecode(key, &keyIdx, key_pair,
- keySz)) == 0) {
- WOLFSSL_MSG("Checking ED25519 key pair");
- keyIdx = 0;
- if ((ret = wc_ed25519_import_public(der->publicKey, der->pubKeySize,
- key_pair)) == 0) {
- /* public and private extracted successfuly no check if is
- * a pair and also do sanity checks on key. wc_ecc_check_key
- * checks that private * base generator equals pubkey */
- if ((ret = wc_ed25519_check_key(key_pair)) == 0)
- ret = 1;
- }
- }
- wc_ed25519_free(key_pair);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key_pair, NULL, DYNAMIC_TYPE_ED25519);
- #endif
- }
- else
- #endif
- {
- ret = 0;
- }
-
- (void)keySz;
-
- return ret;
-}
-
-#ifndef NO_PWDBASED
-
-/* Check To see if PKCS version algo is supported, set id if it is return 0
- < 0 on error */
-static int CheckAlgo(int first, int second, int* id, int* version)
-{
- *id = ALGO_ID_E;
- *version = PKCS5; /* default */
-
- if (first == 1) {
- switch (second) {
-#if !defined(NO_SHA)
- #ifndef NO_RC4
- case PBE_SHA1_RC4_128:
- *id = PBE_SHA1_RC4_128;
- *version = PKCS12v1;
- return 0;
- #endif
- #ifndef NO_DES3
- case PBE_SHA1_DES3:
- *id = PBE_SHA1_DES3;
- *version = PKCS12v1;
- return 0;
- #endif
-#endif /* !NO_SHA */
- default:
- return ALGO_ID_E;
- }
- }
-
- if (first != PKCS5)
- return ASN_INPUT_E; /* VERSION ERROR */
-
- if (second == PBES2) {
- *version = PKCS5v2;
- return 0;
- }
-
- switch (second) {
-#ifndef NO_DES3
- #ifndef NO_MD5
- case 3: /* see RFC 2898 for ids */
- *id = PBE_MD5_DES;
- return 0;
- #endif
- #ifndef NO_SHA
- case 10:
- *id = PBE_SHA1_DES;
- return 0;
- #endif
-#endif /* !NO_DES3 */
- default:
- return ALGO_ID_E;
-
- }
-}
-
-
-/* Check To see if PKCS v2 algo is supported, set id if it is return 0
- < 0 on error */
-static int CheckAlgoV2(int oid, int* id)
-{
- (void)id; /* not used if AES and DES3 disabled */
- switch (oid) {
-#if !defined(NO_DES3) && !defined(NO_SHA)
- case DESb:
- *id = PBE_SHA1_DES;
- return 0;
- case DES3b:
- *id = PBE_SHA1_DES3;
- return 0;
-#endif
-#ifdef WOLFSSL_AES_256
- case AES256CBCb:
- *id = PBE_AES256_CBC;
- return 0;
-#endif
- default:
- return ALGO_ID_E;
-
- }
-}
-
-
-int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID, word32* oidSz,
- int* algoID, void* heap)
-{
- word32 tmpIdx = 0;
-
- if (key == NULL || algoID == NULL)
- return BAD_FUNC_ARG;
-
- *algoID = 0;
-
- #ifndef NO_RSA
- {
- RsaKey rsa;
-
- wc_InitRsaKey(&rsa, heap);
- if (wc_RsaPrivateKeyDecode(key, &tmpIdx, &rsa, keySz) == 0) {
- *algoID = RSAk;
- }
- else {
- WOLFSSL_MSG("Not RSA DER key");
- }
- wc_FreeRsaKey(&rsa);
- }
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- if (*algoID == 0) {
- ecc_key ecc;
-
- tmpIdx = 0;
- wc_ecc_init_ex(&ecc, heap, INVALID_DEVID);
- if (wc_EccPrivateKeyDecode(key, &tmpIdx, &ecc, keySz) == 0) {
- *algoID = ECDSAk;
-
- /* now find oid */
- if (wc_ecc_get_oid(ecc.dp->oidSum, curveOID, oidSz) < 0) {
- WOLFSSL_MSG("Error getting ECC curve OID");
- wc_ecc_free(&ecc);
- return BAD_FUNC_ARG;
- }
- }
- else {
- WOLFSSL_MSG("Not ECC DER key either");
- }
- wc_ecc_free(&ecc);
- }
-#endif /* HAVE_ECC */
-#ifdef HAVE_ED25519
- if (*algoID != RSAk && *algoID != ECDSAk) {
- ed25519_key ed25519;
-
- tmpIdx = 0;
- if (wc_ed25519_init(&ed25519) == 0) {
- if (wc_Ed25519PrivateKeyDecode(key, &tmpIdx, &ed25519, keySz)
- == 0) {
- *algoID = ED25519k;
- }
- else {
- WOLFSSL_MSG("Not ED25519 DER key");
- }
- wc_ed25519_free(&ed25519);
- }
- else {
- WOLFSSL_MSG("GetKeyOID wc_ed25519_init failed");
- }
- }
-#endif
-
- /* if flag is not set then is neither RSA or ECC key that could be
- * found */
- if (*algoID == 0) {
- WOLFSSL_MSG("Bad key DER or compile options");
- return BAD_FUNC_ARG;
- }
-
- (void)curveOID;
- (void)oidSz;
-
- return 1;
-}
-
-
-/*
- * Used when creating PKCS12 shrouded key bags
- * vPKCS is the version of PKCS to use
- * vAlgo is the algorithm version to use
- *
- * if salt is NULL a random number is generated
- *
- * returns the size of encrypted data on success
- */
-int UnTraditionalEnc(byte* key, word32 keySz, byte* out, word32* outSz,
- const char* password,int passwordSz, int vPKCS, int vAlgo,
- byte* salt, word32 saltSz, int itt, WC_RNG* rng, void* heap)
-{
- int algoID = 0;
- byte* tmp;
- word32 tmpSz = 0;
- word32 sz;
- word32 seqSz;
- word32 inOutIdx = 0;
- word32 totalSz = 0;
- int version, id;
- int ret;
-
- const byte* curveOID = NULL;
- word32 oidSz = 0;
-
-#ifdef WOLFSSL_SMALL_STACK
- byte* saltTmp = NULL;
- byte* cbcIv = NULL;
-#else
- byte saltTmp[MAX_IV_SIZE];
- byte cbcIv[MAX_IV_SIZE];
-#endif
-
- WOLFSSL_ENTER("UnTraditionalEnc()");
-
- if (saltSz > MAX_SALT_SIZE)
- return ASN_PARSE_E;
-
-
- inOutIdx += MAX_SEQ_SZ; /* leave room for size of finished shroud */
- if (CheckAlgo(vPKCS, vAlgo, &id, &version) < 0) {
- WOLFSSL_MSG("Bad/Unsupported algorithm ID");
- return ASN_INPUT_E; /* Algo ID error */
- }
-
- if (out != NULL) {
- if (*outSz < inOutIdx + MAX_ALGO_SZ + MAX_SALT_SIZE + MAX_SEQ_SZ + 1 +
- MAX_LENGTH_SZ + MAX_SHORT_SZ + 1)
- return BUFFER_E;
-
- if (version == PKCS5v2) {
- WOLFSSL_MSG("PKCS5v2 Not supported yet\n");
- return ASN_VERSION_E;
- }
-
- if (salt == NULL || saltSz <= 0) {
- saltSz = 8;
- #ifdef WOLFSSL_SMALL_STACK
- saltTmp = (byte*)XMALLOC(saltSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (saltTmp == NULL)
- return MEMORY_E;
- #endif
- salt = saltTmp;
-
- if ((ret = wc_RNG_GenerateBlock(rng, saltTmp, saltSz)) != 0) {
- WOLFSSL_MSG("Error generating random salt");
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- }
-
-
- /* leave room for a sequence (contains salt and iterations int) */
- inOutIdx += MAX_SEQ_SZ; sz = 0;
- inOutIdx += MAX_ALGO_SZ;
-
- /* place salt in buffer */
- out[inOutIdx++] = ASN_OCTET_STRING; sz++;
- tmpSz = SetLength(saltSz, out + inOutIdx);
- inOutIdx += tmpSz; sz += tmpSz;
- XMEMCPY(out + inOutIdx, salt, saltSz);
- inOutIdx += saltSz; sz += saltSz;
-
- /* place iteration count in buffer */
- ret = SetShortInt(out, &inOutIdx, itt, *outSz);
- if (ret < 0) {
- return ret;
- }
- sz += (word32)ret;
-
- /* wind back index and set sequence then clean up buffer */
- inOutIdx -= (sz + MAX_SEQ_SZ);
- tmpSz = SetSequence(sz, out + inOutIdx);
- XMEMMOVE(out + inOutIdx + tmpSz, out + inOutIdx + MAX_SEQ_SZ, sz);
- totalSz += tmpSz + sz; sz += tmpSz;
-
- /* add in algo ID */
- inOutIdx -= MAX_ALGO_SZ;
- tmpSz = SetAlgoID(id, out + inOutIdx, oidPBEType, sz);
- XMEMMOVE(out + inOutIdx + tmpSz, out + inOutIdx + MAX_ALGO_SZ, sz);
- totalSz += tmpSz; inOutIdx += tmpSz + sz;
-
- /* octet string containing encrypted key */
- out[inOutIdx++] = ASN_OCTET_STRING; totalSz++;
- }
-
- /* check key type and get OID if ECC */
- if ((ret = wc_GetKeyOID(key, keySz, &curveOID, &oidSz, &algoID, heap))< 0) {
- return ret;
- }
-
- /* PKCS#8 wrapping around key */
- if (wc_CreatePKCS8Key(NULL, &tmpSz, key, keySz, algoID, curveOID, oidSz)
- != LENGTH_ONLY_E) {
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
-
- /* check if should return max size */
- if (out == NULL) {
- /* account for salt size */
- if (salt == NULL || saltSz <= 0) {
- tmpSz += MAX_SALT_SIZE;
- }
- else {
- tmpSz += saltSz;
- }
-
- /* plus 3 for tags */
- *outSz = tmpSz + MAX_ALGO_SZ + MAX_LENGTH_SZ +MAX_LENGTH_SZ + MAX_SEQ_SZ
- + MAX_LENGTH_SZ + MAX_SEQ_SZ + 3;
- return LENGTH_ONLY_E;
- }
-
- tmp = (byte*)XMALLOC(tmpSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (tmp == NULL) {
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
-
- if ((ret = wc_CreatePKCS8Key(tmp, &tmpSz, key, keySz, algoID, curveOID,
- oidSz)) < 0) {
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- WOLFSSL_MSG("Error wrapping key with PKCS#8");
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- tmpSz = ret;
-
-#ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(salt, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#endif
-
- /* encrypt PKCS#8 wrapped key */
- if ((ret = wc_CryptKey(password, passwordSz, salt, saltSz, itt, id,
- tmp, tmpSz, version, cbcIv, 1)) < 0) {
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- WOLFSSL_MSG("Error encrypting key");
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv != NULL)
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret; /* encryption failure */
- }
- totalSz += tmpSz;
-
-#ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv != NULL)
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- if (*outSz < inOutIdx + tmpSz + MAX_LENGTH_SZ) {
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return BUFFER_E;
- }
-
- /* set length of key and copy over encrypted key */
- seqSz = SetLength(tmpSz, out + inOutIdx);
- inOutIdx += seqSz; totalSz += seqSz;
- XMEMCPY(out + inOutIdx, tmp, tmpSz);
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
-
- /* set total size at begining */
- sz = SetSequence(totalSz, out);
- XMEMMOVE(out + sz, out + MAX_SEQ_SZ, totalSz);
-
- return totalSz + sz;
-}
-
-
-/* Remove Encrypted PKCS8 header, move beginning of traditional to beginning
- of input */
-int ToTraditionalEnc(byte* input, word32 sz,const char* password,int passwordSz)
-{
- word32 inOutIdx = 0, seqEnd, oid;
- int ret = 0, first, second, length = 0, version, saltSz, id;
- int iterations = 0, keySz = 0;
-#ifdef WOLFSSL_SMALL_STACK
- byte* salt = NULL;
- byte* cbcIv = NULL;
-#else
- byte salt[MAX_SALT_SIZE];
- byte cbcIv[MAX_IV_SIZE];
-#endif
-
- if (passwordSz < 0) {
- WOLFSSL_MSG("Bad password size");
- return BAD_FUNC_ARG;
- }
-
- if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
- if (GetAlgoId(input, &inOutIdx, &oid, oidIgnoreType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
- first = input[inOutIdx - 2]; /* PKCS version always 2nd to last byte */
- second = input[inOutIdx - 1]; /* version.algo, algo id last byte */
-
- if (CheckAlgo(first, second, &id, &version) < 0) {
- ERROR_OUT(ASN_INPUT_E, exit_tte); /* Algo ID error */
- }
-
- if (version == PKCS5v2) {
- if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
- if (GetAlgoId(input, &inOutIdx, &oid, oidKdfType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
- if (oid != PBKDF2_OID) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- }
-
- if (GetSequence(input, &inOutIdx, &length, sz) <= 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- /* Find the end of this SEQUENCE so we can check for the OPTIONAL and
- * DEFAULT items. */
- seqEnd = inOutIdx + length;
-
- ret = GetOctetString(input, &inOutIdx, &saltSz, sz);
- if (ret < 0)
- goto exit_tte;
-
- if (saltSz > MAX_SALT_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- salt = (byte*)XMALLOC(MAX_SALT_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (salt == NULL) {
- ERROR_OUT(MEMORY_E, exit_tte);
- }
-#endif
-
- XMEMCPY(salt, &input[inOutIdx], saltSz);
- inOutIdx += saltSz;
-
- if (GetShortInt(input, &inOutIdx, &iterations, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
- /* OPTIONAL key length */
- if (seqEnd > inOutIdx && input[inOutIdx] == ASN_INTEGER) {
- if (GetShortInt(input, &inOutIdx, &keySz, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- }
-
- /* DEFAULT HMAC is SHA-1 */
- if (seqEnd > inOutIdx) {
- if (GetAlgoId(input, &inOutIdx, &oid, oidHmacType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- ERROR_OUT(MEMORY_E, exit_tte);
- }
-#endif
-
- if (version == PKCS5v2) {
- /* get encryption algo */
- if (GetAlgoId(input, &inOutIdx, &oid, oidBlkType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
- if (CheckAlgoV2(oid, &id) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte); /* PKCS v2 algo id error */
- }
-
- ret = GetOctetString(input, &inOutIdx, &length, sz);
- if (ret < 0)
- goto exit_tte;
-
- if (length > MAX_IV_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
-
- XMEMCPY(cbcIv, &input[inOutIdx], length);
- inOutIdx += length;
- }
-
- ret = GetOctetString(input, &inOutIdx, &length, sz);
- if (ret < 0)
- goto exit_tte;
-
- ret = wc_CryptKey(password, passwordSz, salt, saltSz, iterations, id,
- input + inOutIdx, length, version, cbcIv, 0);
-
-exit_tte:
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(salt, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(cbcIv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- if (ret == 0) {
- XMEMMOVE(input, input + inOutIdx, length);
- ret = ToTraditional(input, length);
- }
-
- return ret;
-}
-
-
-/* encrypt PKCS 12 content
- *
- * NOTE: if out is NULL then outSz is set with the total buffer size needed and
- * the error value LENGTH_ONLY_E is returned.
- *
- * input data to encrypt
- * inputSz size of input buffer
- * out buffer to hold the result
- * outSz size of out buffer
- * password password if used. Can be NULL for no password
- * passwordSz size of password buffer
- * vPKCS version of PKCS i.e. PKCS5v2
- * vAlgo algorithm version
- * salt buffer holding salt if used. If NULL then a random salt is created
- * saltSz size of salt buffer if it is not NULL
- * itt number of iterations used
- * rng random number generator to use
- * heap possible heap hint for mallocs/frees
- *
- * returns the total size of encrypted content on success.
- */
-int EncryptContent(byte* input, word32 inputSz, byte* out, word32* outSz,
- const char* password, int passwordSz, int vPKCS, int vAlgo,
- byte* salt, word32 saltSz, int itt, WC_RNG* rng, void* heap)
-{
- word32 sz;
- word32 inOutIdx = 0;
- word32 tmpIdx = 0;
- word32 totalSz = 0;
- word32 seqSz;
- int ret;
- int version, id;
-#ifdef WOLFSSL_SMALL_STACK
- byte* saltTmp = NULL;
- byte* cbcIv = NULL;
-#else
- byte saltTmp[MAX_SALT_SIZE];
- byte cbcIv[MAX_IV_SIZE];
-#endif
-
- (void)heap;
-
- WOLFSSL_ENTER("EncryptContent()");
-
- if (CheckAlgo(vPKCS, vAlgo, &id, &version) < 0)
- return ASN_INPUT_E; /* Algo ID error */
-
- if (version == PKCS5v2) {
- WOLFSSL_MSG("PKCS#5 version 2 not supported yet");
- return BAD_FUNC_ARG;
- }
-
- if (saltSz > MAX_SALT_SIZE)
- return ASN_PARSE_E;
-
- if (outSz == NULL) {
- return BAD_FUNC_ARG;
- }
-
- if (out == NULL) {
- sz = inputSz;
- switch (id) {
- #if !defined(NO_DES3) && (!defined(NO_MD5) || !defined(NO_SHA))
- case PBE_MD5_DES:
- case PBE_SHA1_DES:
- case PBE_SHA1_DES3:
- /* set to block size of 8 for DES operations. This rounds up
- * to the nearset multiple of 8 */
- sz &= 0xfffffff8;
- sz += 8;
- break;
- #endif /* !NO_DES3 && (!NO_MD5 || !NO_SHA) */
- #if !defined(NO_RC4) && !defined(NO_SHA)
- case PBE_SHA1_RC4_128:
- break;
- #endif
- case -1:
- break;
-
- default:
- return ALGO_ID_E;
- }
-
- if (saltSz <= 0) {
- sz += MAX_SALT_SIZE;
- }
- else {
- sz += saltSz;
- }
-
- /* add 2 for tags */
- *outSz = sz + MAX_ALGO_SZ + MAX_SEQ_SZ + MAX_LENGTH_SZ +
- MAX_LENGTH_SZ + MAX_LENGTH_SZ + MAX_SHORT_SZ + 2;
-
- return LENGTH_ONLY_E;
- }
-
- if (inOutIdx + MAX_ALGO_SZ + MAX_SEQ_SZ + 1 > *outSz)
- return BUFFER_E;
-
- sz = SetAlgoID(id, out + inOutIdx, oidPBEType, 0);
- inOutIdx += sz; totalSz += sz;
- tmpIdx = inOutIdx;
- tmpIdx += MAX_SEQ_SZ; /* save room for salt and itter sequence */
- out[tmpIdx++] = ASN_OCTET_STRING;
-
- /* create random salt if one not provided */
- if (salt == NULL || saltSz <= 0) {
- saltSz = 8;
- #ifdef WOLFSSL_SMALL_STACK
- saltTmp = (byte*)XMALLOC(saltSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (saltTmp == NULL)
- return MEMORY_E;
- #endif
- salt = saltTmp;
-
- if ((ret = wc_RNG_GenerateBlock(rng, saltTmp, saltSz)) != 0) {
- WOLFSSL_MSG("Error generating random salt");
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- }
-
- if (tmpIdx + MAX_LENGTH_SZ + saltSz + MAX_SHORT_SZ > *outSz) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
-
- sz = SetLength(saltSz, out + tmpIdx);
- tmpIdx += sz;
-
- XMEMCPY(out + tmpIdx, salt, saltSz);
- tmpIdx += saltSz;
-
- /* place itteration setting in buffer */
- ret = SetShortInt(out, &tmpIdx, itt, *outSz);
- if (ret < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
-
- /* rewind and place sequence */
- sz = tmpIdx - inOutIdx - MAX_SEQ_SZ;
- seqSz = SetSequence(sz, out + inOutIdx);
- XMEMMOVE(out + inOutIdx + seqSz, out + inOutIdx + MAX_SEQ_SZ, sz);
- inOutIdx += seqSz; totalSz += seqSz;
- inOutIdx += sz; totalSz += sz;
-
-#ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#endif
-
- if ((ret = wc_CryptKey(password, passwordSz, salt, saltSz, itt, id,
- input, inputSz, version, cbcIv, 1)) < 0) {
-
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret; /* encrypt failure */
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- if (inOutIdx + 1 + MAX_LENGTH_SZ + inputSz > *outSz)
- return BUFFER_E;
-
- out[inOutIdx++] = ASN_LONG_LENGTH; totalSz++;
- sz = SetLength(inputSz, out + inOutIdx);
- inOutIdx += sz; totalSz += sz;
- XMEMCPY(out + inOutIdx, input, inputSz);
- totalSz += inputSz;
-
- return totalSz;
-}
-
-
-/* decrypt PKCS
- *
- * NOTE: input buffer is overwritten with decrypted data!
- *
- * input[in/out] data to decrypt and results are written to
- * sz size of input buffer
- * password password if used. Can be NULL for no password
- * passwordSz size of password buffer
- *
- * returns the total size of decrypted content on success.
- */
-int DecryptContent(byte* input, word32 sz,const char* password,int passwordSz)
-{
- word32 inOutIdx = 0, seqEnd, oid;
- int ret = 0;
- int first, second, length = 0, version, saltSz, id;
- int iterations = 0, keySz = 0;
-#ifdef WOLFSSL_SMALL_STACK
- byte* salt = NULL;
- byte* cbcIv = NULL;
-#else
- byte salt[MAX_SALT_SIZE];
- byte cbcIv[MAX_IV_SIZE];
-#endif
-
- if (GetAlgoId(input, &inOutIdx, &oid, oidIgnoreType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- first = input[inOutIdx - 2]; /* PKCS version always 2nd to last byte */
- second = input[inOutIdx - 1]; /* version.algo, algo id last byte */
-
- if (CheckAlgo(first, second, &id, &version) < 0) {
- ERROR_OUT(ASN_INPUT_E, exit_dc); /* Algo ID error */
- }
-
- if (version == PKCS5v2) {
- if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- if (GetAlgoId(input, &inOutIdx, &oid, oidKdfType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- if (oid != PBKDF2_OID) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- }
-
- if (GetSequence(input, &inOutIdx, &length, sz) <= 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- /* Find the end of this SEQUENCE so we can check for the OPTIONAL and
- * DEFAULT items. */
- seqEnd = inOutIdx + length;
-
- ret = GetOctetString(input, &inOutIdx, &saltSz, sz);
- if (ret < 0)
- goto exit_dc;
-
- if (saltSz > MAX_SALT_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- salt = (byte*)XMALLOC(MAX_SALT_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (salt == NULL) {
- ERROR_OUT(MEMORY_E, exit_dc);
- }
-#endif
-
- XMEMCPY(salt, &input[inOutIdx], saltSz);
- inOutIdx += saltSz;
-
- if (GetShortInt(input, &inOutIdx, &iterations, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- /* OPTIONAL key length */
- if (seqEnd > inOutIdx && input[inOutIdx] == ASN_INTEGER) {
- if (GetShortInt(input, &inOutIdx, &keySz, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- }
-
- /* DEFAULT HMAC is SHA-1 */
- if (seqEnd > inOutIdx) {
- if (GetAlgoId(input, &inOutIdx, &oid, oidHmacType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- ERROR_OUT(MEMORY_E, exit_dc);
- }
-#endif
-
- if (version == PKCS5v2) {
- /* get encryption algo */
- if (GetAlgoId(input, &inOutIdx, &oid, oidBlkType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- if (CheckAlgoV2(oid, &id) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc); /* PKCS v2 algo id error */
- }
-
- ret = GetOctetString(input, &inOutIdx, &length, sz);
- if (ret < 0)
- goto exit_dc;
-
- if (length > MAX_IV_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- XMEMCPY(cbcIv, &input[inOutIdx], length);
- inOutIdx += length;
- }
-
- if (input[inOutIdx++] != (ASN_CONTEXT_SPECIFIC | 0)) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- if (GetLength(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
-
- ret = wc_CryptKey(password, passwordSz, salt, saltSz, iterations, id,
- input + inOutIdx, length, version, cbcIv, 0);
-
-exit_dc:
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(salt, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(cbcIv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- if (ret == 0) {
- XMEMMOVE(input, input + inOutIdx, length);
- ret = length;
- }
-
- return ret;
-}
-#endif /* NO_PWDBASED */
-
-#ifndef NO_RSA
-
-#ifndef HAVE_USER_RSA
-int wc_RsaPublicKeyDecode(const byte* input, word32* inOutIdx, RsaKey* key,
- word32 inSz)
-{
- int length;
-#if defined(OPENSSL_EXTRA) || defined(RSA_DECODE_EXTRA)
- byte b;
-#endif
- int ret;
-
- if (input == NULL || inOutIdx == NULL || key == NULL)
- return BAD_FUNC_ARG;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- key->type = RSA_PUBLIC;
-
-#if defined(OPENSSL_EXTRA) || defined(RSA_DECODE_EXTRA)
- if ((*inOutIdx + 1) > inSz)
- return BUFFER_E;
-
- b = input[*inOutIdx];
- if (b != ASN_INTEGER) {
- /* not from decoded cert, will have algo id, skip past */
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (SkipObjectId(input, inOutIdx, inSz) < 0)
- return ASN_PARSE_E;
-
- /* Option NULL ASN.1 tag */
- if (*inOutIdx >= inSz) {
- return BUFFER_E;
- }
- if (input[*inOutIdx] == ASN_TAG_NULL) {
- ret = GetASNNull(input, inOutIdx, inSz);
- if (ret != 0)
- return ret;
- }
-
- /* should have bit tag length and seq next */
- ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
- if (ret != 0)
- return ret;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- }
-#endif /* OPENSSL_EXTRA */
-
- if (GetInt(&key->n, input, inOutIdx, inSz) < 0)
- return ASN_RSA_KEY_E;
- if (GetInt(&key->e, input, inOutIdx, inSz) < 0) {
- mp_clear(&key->n);
- return ASN_RSA_KEY_E;
- }
-
-#ifdef WOLFSSL_XILINX_CRYPT
- if (wc_InitRsaHw(key) != 0) {
- return BAD_STATE_E;
- }
-#endif
-
- return 0;
-}
-
-/* import RSA public key elements (n, e) into RsaKey structure (key) */
-int wc_RsaPublicKeyDecodeRaw(const byte* n, word32 nSz, const byte* e,
- word32 eSz, RsaKey* key)
-{
- if (n == NULL || e == NULL || key == NULL)
- return BAD_FUNC_ARG;
-
- key->type = RSA_PUBLIC;
-
- if (mp_init(&key->n) != MP_OKAY)
- return MP_INIT_E;
-
- if (mp_read_unsigned_bin(&key->n, n, nSz) != 0) {
- mp_clear(&key->n);
- return ASN_GETINT_E;
- }
-
- if (mp_init(&key->e) != MP_OKAY) {
- mp_clear(&key->n);
- return MP_INIT_E;
- }
-
- if (mp_read_unsigned_bin(&key->e, e, eSz) != 0) {
- mp_clear(&key->n);
- mp_clear(&key->e);
- return ASN_GETINT_E;
- }
-
-#ifdef WOLFSSL_XILINX_CRYPT
- if (wc_InitRsaHw(key) != 0) {
- return BAD_STATE_E;
- }
-#endif
-
- return 0;
-}
-#endif /* HAVE_USER_RSA */
-#endif
-
-#ifndef NO_DH
-
-int wc_DhKeyDecode(const byte* input, word32* inOutIdx, DhKey* key, word32 inSz)
-{
- int length;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->g, input, inOutIdx, inSz) < 0) {
- return ASN_DH_KEY_E;
- }
-
- return 0;
-}
-
-
-int wc_DhParamsLoad(const byte* input, word32 inSz, byte* p, word32* pInOutSz,
- byte* g, word32* gInOutSz)
-{
- word32 idx = 0;
- int ret;
- int length;
-
- if (GetSequence(input, &idx, &length, inSz) <= 0)
- return ASN_PARSE_E;
-
- ret = GetASNInt(input, &idx, &length, inSz);
- if (ret != 0)
- return ret;
-
- if (length <= (int)*pInOutSz) {
- XMEMCPY(p, &input[idx], length);
- *pInOutSz = length;
- }
- else {
- return BUFFER_E;
- }
- idx += length;
-
- ret = GetASNInt(input, &idx, &length, inSz);
- if (ret != 0)
- return ret;
-
- if (length <= (int)*gInOutSz) {
- XMEMCPY(g, &input[idx], length);
- *gInOutSz = length;
- }
- else {
- return BUFFER_E;
- }
-
- return 0;
-}
-
-#endif /* NO_DH */
-
-
-#ifndef NO_DSA
-
-int DsaPublicKeyDecode(const byte* input, word32* inOutIdx, DsaKey* key,
- word32 inSz)
-{
- int length;
-
- if (input == NULL || inOutIdx == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->q, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->g, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->y, input, inOutIdx, inSz) < 0 )
- return ASN_DH_KEY_E;
-
- key->type = DSA_PUBLIC;
- return 0;
-}
-
-
-int DsaPrivateKeyDecode(const byte* input, word32* inOutIdx, DsaKey* key,
- word32 inSz)
-{
- int length, version;
-
- /* Sanity checks on input */
- if (input == NULL || inOutIdx == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->q, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->g, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->y, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->x, input, inOutIdx, inSz) < 0 )
- return ASN_DH_KEY_E;
-
- key->type = DSA_PRIVATE;
- return 0;
-}
-
-static mp_int* GetDsaInt(DsaKey* key, int idx)
-{
- if (idx == 0)
- return &key->p;
- if (idx == 1)
- return &key->q;
- if (idx == 2)
- return &key->g;
- if (idx == 3)
- return &key->y;
- if (idx == 4)
- return &key->x;
-
- return NULL;
-}
-
-/* Release Tmp DSA resources */
-static WC_INLINE void FreeTmpDsas(byte** tmps, void* heap)
-{
- int i;
-
- for (i = 0; i < DSA_INTS; i++)
- XFREE(tmps[i], heap, DYNAMIC_TYPE_DSA);
-
- (void)heap;
-}
-
-/* Convert DsaKey key to DER format, write to output (inLen), return bytes
- written */
-int wc_DsaKeyToDer(DsaKey* key, byte* output, word32 inLen)
-{
- word32 seqSz, verSz, rawLen, intTotalLen = 0;
- word32 sizes[DSA_INTS];
- int i, j, outLen, ret = 0, mpSz;
-
- byte seq[MAX_SEQ_SZ];
- byte ver[MAX_VERSION_SZ];
- byte* tmps[DSA_INTS];
-
- if (!key || !output)
- return BAD_FUNC_ARG;
-
- if (key->type != DSA_PRIVATE)
- return BAD_FUNC_ARG;
-
- for (i = 0; i < DSA_INTS; i++)
- tmps[i] = NULL;
-
- /* write all big ints from key to DER tmps */
- for (i = 0; i < DSA_INTS; i++) {
- mp_int* keyInt = GetDsaInt(key, i);
-
- rawLen = mp_unsigned_bin_size(keyInt) + 1;
- tmps[i] = (byte*)XMALLOC(rawLen + MAX_SEQ_SZ, key->heap,
- DYNAMIC_TYPE_DSA);
- if (tmps[i] == NULL) {
- ret = MEMORY_E;
- break;
- }
-
- mpSz = SetASNIntMP(keyInt, -1, tmps[i]);
- if (mpSz < 0) {
- ret = mpSz;
- break;
- }
- intTotalLen += (sizes[i] = mpSz);
- }
-
- if (ret != 0) {
- FreeTmpDsas(tmps, key->heap);
- return ret;
- }
-
- /* make headers */
- verSz = SetMyVersion(0, ver, FALSE);
- seqSz = SetSequence(verSz + intTotalLen, seq);
-
- outLen = seqSz + verSz + intTotalLen;
- if (outLen > (int)inLen)
- return BAD_FUNC_ARG;
-
- /* write to output */
- XMEMCPY(output, seq, seqSz);
- j = seqSz;
- XMEMCPY(output + j, ver, verSz);
- j += verSz;
-
- for (i = 0; i < DSA_INTS; i++) {
- XMEMCPY(output + j, tmps[i], sizes[i]);
- j += sizes[i];
- }
- FreeTmpDsas(tmps, key->heap);
-
- return outLen;
-}
-
-#endif /* NO_DSA */
-
-
-void InitDecodedCert(DecodedCert* cert, byte* source, word32 inSz, void* heap)
-{
- if (cert != NULL) {
- XMEMSET(cert, 0, sizeof(DecodedCert));
-
- cert->subjectCNEnc = CTC_UTF8;
- cert->issuer[0] = '\0';
- cert->subject[0] = '\0';
- cert->source = source; /* don't own */
- cert->maxIdx = inSz; /* can't go over this index */
- cert->heap = heap;
- #ifdef WOLFSSL_CERT_GEN
- cert->subjectSNEnc = CTC_UTF8;
- cert->subjectCEnc = CTC_PRINTABLE;
- cert->subjectLEnc = CTC_UTF8;
- cert->subjectSTEnc = CTC_UTF8;
- cert->subjectOEnc = CTC_UTF8;
- cert->subjectOUEnc = CTC_UTF8;
- #endif /* WOLFSSL_CERT_GEN */
-
- InitSignatureCtx(&cert->sigCtx, heap, INVALID_DEVID);
- }
-}
-
-
-void FreeAltNames(DNS_entry* altNames, void* heap)
-{
- (void)heap;
-
- while (altNames) {
- DNS_entry* tmp = altNames->next;
-
- XFREE(altNames->name, heap, DYNAMIC_TYPE_ALTNAME);
- XFREE(altNames, heap, DYNAMIC_TYPE_ALTNAME);
- altNames = tmp;
- }
-}
-
-#ifndef IGNORE_NAME_CONSTRAINTS
-
-void FreeNameSubtrees(Base_entry* names, void* heap)
-{
- (void)heap;
-
- while (names) {
- Base_entry* tmp = names->next;
-
- XFREE(names->name, heap, DYNAMIC_TYPE_ALTNAME);
- XFREE(names, heap, DYNAMIC_TYPE_ALTNAME);
- names = tmp;
- }
-}
-
-#endif /* IGNORE_NAME_CONSTRAINTS */
-
-void FreeDecodedCert(DecodedCert* cert)
-{
- if (cert->subjectCNStored == 1)
- XFREE(cert->subjectCN, cert->heap, DYNAMIC_TYPE_SUBJECT_CN);
- if (cert->pubKeyStored == 1)
- XFREE(cert->publicKey, cert->heap, DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->weOwnAltNames && cert->altNames)
- FreeAltNames(cert->altNames, cert->heap);
-#ifndef IGNORE_NAME_CONSTRAINTS
- if (cert->altEmailNames)
- FreeAltNames(cert->altEmailNames, cert->heap);
- if (cert->permittedNames)
- FreeNameSubtrees(cert->permittedNames, cert->heap);
- if (cert->excludedNames)
- FreeNameSubtrees(cert->excludedNames, cert->heap);
-#endif /* IGNORE_NAME_CONSTRAINTS */
-#ifdef WOLFSSL_SEP
- XFREE(cert->deviceType, cert->heap, DYNAMIC_TYPE_X509_EXT);
- XFREE(cert->hwType, cert->heap, DYNAMIC_TYPE_X509_EXT);
- XFREE(cert->hwSerialNum, cert->heap, DYNAMIC_TYPE_X509_EXT);
-#endif /* WOLFSSL_SEP */
-#if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- if (cert->issuerName.fullName != NULL)
- XFREE(cert->issuerName.fullName, cert->heap, DYNAMIC_TYPE_X509);
- if (cert->subjectName.fullName != NULL)
- XFREE(cert->subjectName.fullName, cert->heap, DYNAMIC_TYPE_X509);
-#endif /* OPENSSL_EXTRA */
- FreeSignatureCtx(&cert->sigCtx);
-}
-
-static int GetCertHeader(DecodedCert* cert)
-{
- int ret = 0, len;
-
- if (GetSequence(cert->source, &cert->srcIdx, &len, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- cert->certBegin = cert->srcIdx;
-
- if (GetSequence(cert->source, &cert->srcIdx, &len, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- cert->sigIndex = len + cert->srcIdx;
-
- if (GetExplicitVersion(cert->source, &cert->srcIdx, &cert->version,
- cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- if (GetSerialNumber(cert->source, &cert->srcIdx, cert->serial,
- &cert->serialSz, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- return ret;
-}
-
-#if !defined(NO_RSA)
-/* Store Rsa Key, may save later, Dsa could use in future */
-static int StoreRsaKey(DecodedCert* cert)
-{
- int length;
- word32 recvd = cert->srcIdx;
-
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- recvd = cert->srcIdx - recvd;
- length += recvd;
-
- while (recvd--)
- cert->srcIdx--;
-
- cert->pubKeySize = length;
- cert->publicKey = cert->source + cert->srcIdx;
- cert->srcIdx += length;
-
- return 0;
-}
-#endif /* !NO_RSA */
-
-#ifdef HAVE_ECC
-
- /* return 0 on success if the ECC curve oid sum is supported */
- static int CheckCurve(word32 oid)
- {
- int ret = 0;
- word32 oidSz = 0;
-
- ret = wc_ecc_get_oid(oid, NULL, &oidSz);
- if (ret < 0 || oidSz <= 0) {
- WOLFSSL_MSG("CheckCurve not found");
- ret = ALGO_ID_E;
- }
-
- return ret;
- }
-
-#endif /* HAVE_ECC */
-
-static int GetKey(DecodedCert* cert)
-{
- int length;
-#if defined(HAVE_ECC) || defined(HAVE_NTRU)
- int tmpIdx = cert->srcIdx;
-#endif
-
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- if (GetAlgoId(cert->source, &cert->srcIdx,
- &cert->keyOID, oidKeyType, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- switch (cert->keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- int ret;
- ret = CheckBitString(cert->source, &cert->srcIdx, NULL,
- cert->maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
-
- return StoreRsaKey(cert);
- }
-
- #endif /* NO_RSA */
- #ifdef HAVE_NTRU
- case NTRUk:
- {
- const byte* key = &cert->source[tmpIdx];
- byte* next = (byte*)key;
- word16 keyLen;
- word32 rc;
- word32 remaining = cert->maxIdx - cert->srcIdx;
-#ifdef WOLFSSL_SMALL_STACK
- byte* keyBlob = NULL;
-#else
- byte keyBlob[MAX_NTRU_KEY_SZ];
-#endif
- rc = ntru_crypto_ntru_encrypt_subjectPublicKeyInfo2PublicKey(key,
- &keyLen, NULL, &next, &remaining);
- if (rc != NTRU_OK)
- return ASN_NTRU_KEY_E;
- if (keyLen > MAX_NTRU_KEY_SZ)
- return ASN_NTRU_KEY_E;
-
-#ifdef WOLFSSL_SMALL_STACK
- keyBlob = (byte*)XMALLOC(MAX_NTRU_KEY_SZ, cert->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (keyBlob == NULL)
- return MEMORY_E;
-#endif
-
- rc = ntru_crypto_ntru_encrypt_subjectPublicKeyInfo2PublicKey(key,
- &keyLen, keyBlob, &next, &remaining);
- if (rc != NTRU_OK) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return ASN_NTRU_KEY_E;
- }
-
- if ( (next - key) < 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return ASN_NTRU_KEY_E;
- }
-
- cert->srcIdx = tmpIdx + (int)(next - key);
-
- cert->publicKey = (byte*)XMALLOC(keyLen, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->publicKey == NULL) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return MEMORY_E;
- }
- XMEMCPY(cert->publicKey, keyBlob, keyLen);
- cert->pubKeyStored = 1;
- cert->pubKeySize = keyLen;
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return 0;
- }
- #endif /* HAVE_NTRU */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- int ret;
- byte seq[5];
- int pubLen = length + 1 + SetLength(length, seq);
-
- if (cert->source[cert->srcIdx] !=
- (ASN_SEQUENCE | ASN_CONSTRUCTED)) {
- if (GetObjectId(cert->source, &cert->srcIdx,
- &cert->pkCurveOID, oidCurveType, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- if (CheckCurve(cert->pkCurveOID) < 0)
- return ECC_CURVE_OID_E;
-
- /* key header */
- ret = CheckBitString(cert->source, &cert->srcIdx, &length,
- cert->maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
- }
-
- cert->publicKey = (byte*)XMALLOC(pubLen, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->publicKey == NULL)
- return MEMORY_E;
- XMEMCPY(cert->publicKey, &cert->source[tmpIdx], pubLen);
- cert->pubKeyStored = 1;
- cert->pubKeySize = pubLen;
-
- cert->srcIdx = tmpIdx + pubLen;
-
- return 0;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- int ret;
-
- cert->pkCurveOID = ED25519k;
-
- ret = CheckBitString(cert->source, &cert->srcIdx, &length,
- cert->maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
-
- cert->publicKey = (byte*) XMALLOC(length, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->publicKey == NULL)
- return MEMORY_E;
- XMEMCPY(cert->publicKey, &cert->source[cert->srcIdx], length);
- cert->pubKeyStored = 1;
- cert->pubKeySize = length;
-
- cert->srcIdx += length;
-
- return 0;
- }
- #endif /* HAVE_ED25519 */
- default:
- return ASN_UNKNOWN_OID_E;
- }
-}
-
-/* process NAME, either issuer or subject */
-static int GetName(DecodedCert* cert, int nameType)
-{
- int length; /* length of all distinguished names */
- int dummy;
- int ret;
- char* full;
- byte* hash;
- word32 idx;
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- DecodedName* dName =
- (nameType == ISSUER) ? &cert->issuerName : &cert->subjectName;
- int dcnum = 0;
- #endif /* OPENSSL_EXTRA */
-
- WOLFSSL_MSG("Getting Cert Name");
-
- if (nameType == ISSUER) {
- full = cert->issuer;
- hash = cert->issuerHash;
- }
- else {
- full = cert->subject;
- hash = cert->subjectHash;
- }
-
- if (cert->srcIdx >= cert->maxIdx) {
- return BUFFER_E;
- }
-
- if (cert->source[cert->srcIdx] == ASN_OBJECT_ID) {
- WOLFSSL_MSG("Trying optional prefix...");
-
- if (SkipObjectId(cert->source, &cert->srcIdx, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- WOLFSSL_MSG("Got optional prefix");
- }
-
- /* For OCSP, RFC2560 section 4.1.1 states the issuer hash should be
- * calculated over the entire DER encoding of the Name field, including
- * the tag and length. */
- idx = cert->srcIdx;
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
-#ifdef NO_SHA
- ret = wc_Sha256Hash(&cert->source[idx], length + cert->srcIdx - idx, hash);
-#else
- ret = wc_ShaHash(&cert->source[idx], length + cert->srcIdx - idx, hash);
-#endif
- if (ret != 0)
- return ret;
-
- length += cert->srcIdx;
- idx = 0;
-
-#ifdef HAVE_PKCS7
- /* store pointer to raw issuer */
- if (nameType == ISSUER) {
- cert->issuerRaw = &cert->source[cert->srcIdx];
- cert->issuerRawLen = length - cert->srcIdx;
- }
-#endif
-#ifndef IGNORE_NAME_CONSTRAINTS
- if (nameType == SUBJECT) {
- cert->subjectRaw = &cert->source[cert->srcIdx];
- cert->subjectRawLen = length - cert->srcIdx;
- }
-#endif
-
- while (cert->srcIdx < (word32)length) {
- byte b;
- byte joint[2];
- byte tooBig = FALSE;
- int oidSz;
-
- if (GetSet(cert->source, &cert->srcIdx, &dummy, cert->maxIdx) < 0) {
- WOLFSSL_MSG("Cert name lacks set header, trying sequence");
- }
-
- if (GetSequence(cert->source, &cert->srcIdx, &dummy, cert->maxIdx) <= 0)
- return ASN_PARSE_E;
-
- ret = GetASNObjectId(cert->source, &cert->srcIdx, &oidSz, cert->maxIdx);
- if (ret != 0)
- return ret;
-
- /* make sure there is room for joint */
- if ((cert->srcIdx + sizeof(joint)) > cert->maxIdx)
- return ASN_PARSE_E;
-
- XMEMCPY(joint, &cert->source[cert->srcIdx], sizeof(joint));
-
- /* v1 name types */
- if (joint[0] == 0x55 && joint[1] == 0x04) {
- const char* copy = NULL;
- int strLen;
- byte id;
-
- cert->srcIdx += 2;
- id = cert->source[cert->srcIdx++];
- b = cert->source[cert->srcIdx++]; /* encoding */
-
- if (GetLength(cert->source, &cert->srcIdx, &strLen,
- cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- if ( (strLen + 14) > (int)(ASN_NAME_MAX - idx)) {
- /* include biggest pre fix header too 4 = "/serialNumber=" */
- WOLFSSL_MSG("ASN Name too big, skipping");
- tooBig = TRUE;
- }
-
- if (id == ASN_COMMON_NAME) {
- if (nameType == SUBJECT) {
- cert->subjectCN = (char *)&cert->source[cert->srcIdx];
- cert->subjectCNLen = strLen;
- cert->subjectCNEnc = b;
- }
-
- copy = WOLFSSL_COMMON_NAME;
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->cnIdx = cert->srcIdx;
- dName->cnLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_SUR_NAME) {
- copy = WOLFSSL_SUR_NAME;
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectSN = (char*)&cert->source[cert->srcIdx];
- cert->subjectSNLen = strLen;
- cert->subjectSNEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->snIdx = cert->srcIdx;
- dName->snLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_COUNTRY_NAME) {
- copy = WOLFSSL_COUNTRY_NAME;
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectC = (char*)&cert->source[cert->srcIdx];
- cert->subjectCLen = strLen;
- cert->subjectCEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->cIdx = cert->srcIdx;
- dName->cLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_LOCALITY_NAME) {
- copy = WOLFSSL_LOCALITY_NAME;
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectL = (char*)&cert->source[cert->srcIdx];
- cert->subjectLLen = strLen;
- cert->subjectLEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->lIdx = cert->srcIdx;
- dName->lLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_STATE_NAME) {
- copy = WOLFSSL_STATE_NAME;
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectST = (char*)&cert->source[cert->srcIdx];
- cert->subjectSTLen = strLen;
- cert->subjectSTEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->stIdx = cert->srcIdx;
- dName->stLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_ORG_NAME) {
- copy = WOLFSSL_ORG_NAME;
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectO = (char*)&cert->source[cert->srcIdx];
- cert->subjectOLen = strLen;
- cert->subjectOEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->oIdx = cert->srcIdx;
- dName->oLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_ORGUNIT_NAME) {
- copy = WOLFSSL_ORGUNIT_NAME;
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectOU = (char*)&cert->source[cert->srcIdx];
- cert->subjectOULen = strLen;
- cert->subjectOUEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->ouIdx = cert->srcIdx;
- dName->ouLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_SERIAL_NUMBER) {
- copy = WOLFSSL_SERIAL_NUMBER;
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->snIdx = cert->srcIdx;
- dName->snLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- if (copy && !tooBig) {
- XMEMCPY(&full[idx], copy, XSTRLEN(copy));
- idx += (word32)XSTRLEN(copy);
- #ifdef WOLFSSL_WPAS
- full[idx] = '=';
- idx++;
- #endif
- XMEMCPY(&full[idx], &cert->source[cert->srcIdx], strLen);
- idx += strLen;
- }
-
- cert->srcIdx += strLen;
- }
- else {
- /* skip */
- byte email = FALSE;
- byte pilot = FALSE;
- byte id = 0;
- int adv;
-
- if (joint[0] == 0x2a && joint[1] == 0x86) /* email id hdr */
- email = TRUE;
-
- if (joint[0] == 0x9 && joint[1] == 0x92) { /* uid id hdr */
- /* last value of OID is the type of pilot attribute */
- id = cert->source[cert->srcIdx + oidSz - 1];
- pilot = TRUE;
- }
-
- cert->srcIdx += oidSz + 1;
-
- if (GetLength(cert->source, &cert->srcIdx, &adv, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- if (adv > (int)(ASN_NAME_MAX - idx)) {
- WOLFSSL_MSG("ASN name too big, skipping");
- tooBig = TRUE;
- }
-
- if (email) {
- if ( (14 + adv) > (int)(ASN_NAME_MAX - idx)) {
- WOLFSSL_MSG("ASN name too big, skipping");
- tooBig = TRUE;
- }
- if (!tooBig) {
- XMEMCPY(&full[idx], "/emailAddress=", 14);
- idx += 14;
- }
-
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectEmail = (char*)&cert->source[cert->srcIdx];
- cert->subjectEmailLen = adv;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- dName->emailIdx = cert->srcIdx;
- dName->emailLen = adv;
- #endif /* OPENSSL_EXTRA */
- #ifndef IGNORE_NAME_CONSTRAINTS
- {
- DNS_entry* emailName = NULL;
-
- emailName = (DNS_entry*)XMALLOC(sizeof(DNS_entry),
- cert->heap, DYNAMIC_TYPE_ALTNAME);
- if (emailName == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
- emailName->type = 0;
- emailName->name = (char*)XMALLOC(adv + 1,
- cert->heap, DYNAMIC_TYPE_ALTNAME);
- if (emailName->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(emailName, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- emailName->len = adv;
- XMEMCPY(emailName->name,
- &cert->source[cert->srcIdx], adv);
- emailName->name[adv] = '\0';
-
- emailName->next = cert->altEmailNames;
- cert->altEmailNames = emailName;
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- if (!tooBig) {
- XMEMCPY(&full[idx], &cert->source[cert->srcIdx], adv);
- idx += adv;
- }
- }
-
- if (pilot) {
- if ( (5 + adv) > (int)(ASN_NAME_MAX - idx)) {
- WOLFSSL_MSG("ASN name too big, skipping");
- tooBig = TRUE;
- }
- if (!tooBig) {
- switch (id) {
- case ASN_USER_ID:
- XMEMCPY(&full[idx], "/UID=", 5);
- idx += 5;
- #if defined(OPENSSL_EXTRA) || \
- defined(OPENSSL_EXTRA_X509_SMALL)
- dName->uidIdx = cert->srcIdx;
- dName->uidLen = adv;
- #endif /* OPENSSL_EXTRA */
- break;
-
- case ASN_DOMAIN_COMPONENT:
- XMEMCPY(&full[idx], "/DC=", 4);
- idx += 4;
- #if defined(OPENSSL_EXTRA) || \
- defined(OPENSSL_EXTRA_X509_SMALL)
- dName->dcIdx[dcnum] = cert->srcIdx;
- dName->dcLen[dcnum] = adv;
- dName->dcNum = dcnum + 1;
- dcnum++;
- #endif /* OPENSSL_EXTRA */
- break;
-
- default:
- WOLFSSL_MSG("Unknown pilot attribute type");
- return ASN_PARSE_E;
- }
- XMEMCPY(&full[idx], &cert->source[cert->srcIdx], adv);
- idx += adv;
- }
- }
-
- cert->srcIdx += adv;
- }
- }
- full[idx++] = 0;
-
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- {
- int totalLen = 0;
- int i = 0;
-
- if (dName->cnLen != 0)
- totalLen += dName->cnLen + 4;
- if (dName->snLen != 0)
- totalLen += dName->snLen + 4;
- if (dName->cLen != 0)
- totalLen += dName->cLen + 3;
- if (dName->lLen != 0)
- totalLen += dName->lLen + 3;
- if (dName->stLen != 0)
- totalLen += dName->stLen + 4;
- if (dName->oLen != 0)
- totalLen += dName->oLen + 3;
- if (dName->ouLen != 0)
- totalLen += dName->ouLen + 4;
- if (dName->emailLen != 0)
- totalLen += dName->emailLen + 14;
- if (dName->uidLen != 0)
- totalLen += dName->uidLen + 5;
- if (dName->serialLen != 0)
- totalLen += dName->serialLen + 14;
- if (dName->dcNum != 0){
- for (i = 0;i < dName->dcNum;i++)
- totalLen += dName->dcLen[i] + 4;
- }
-
- dName->fullName = (char*)XMALLOC(totalLen + 1, cert->heap,
- DYNAMIC_TYPE_X509);
- if (dName->fullName != NULL) {
- idx = 0;
-
- if (dName->cnLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_COMMON_NAME, 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->cnIdx], dName->cnLen);
- dName->cnIdx = idx;
- idx += dName->cnLen;
- }
- if (dName->snLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_SUR_NAME, 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->snIdx], dName->snLen);
- dName->snIdx = idx;
- idx += dName->snLen;
- }
- if (dName->cLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_COUNTRY_NAME, 3);
- idx += 3;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->cIdx], dName->cLen);
- dName->cIdx = idx;
- idx += dName->cLen;
- }
- if (dName->lLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_LOCALITY_NAME, 3);
- idx += 3;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->lIdx], dName->lLen);
- dName->lIdx = idx;
- idx += dName->lLen;
- }
- if (dName->stLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_STATE_NAME, 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->stIdx], dName->stLen);
- dName->stIdx = idx;
- idx += dName->stLen;
- }
- if (dName->oLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_ORG_NAME, 3);
- idx += 3;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->oIdx], dName->oLen);
- dName->oIdx = idx;
- idx += dName->oLen;
- }
- if (dName->ouLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_ORGUNIT_NAME, 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->ouIdx], dName->ouLen);
- dName->ouIdx = idx;
- idx += dName->ouLen;
- }
- if (dName->emailLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/emailAddress=", 14);
- idx += 14;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->emailIdx], dName->emailLen);
- dName->emailIdx = idx;
- idx += dName->emailLen;
- }
- for (i = 0;i < dName->dcNum;i++){
- if (dName->dcLen[i] != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_DOMAIN_COMPONENT, 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->dcIdx[i]], dName->dcLen[i]);
- dName->dcIdx[i] = idx;
- idx += dName->dcLen[i];
- }
- }
- if (dName->uidLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/UID=", 5);
- idx += 5;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->uidIdx], dName->uidLen);
- dName->uidIdx = idx;
- idx += dName->uidLen;
- }
- if (dName->serialLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], WOLFSSL_SERIAL_NUMBER, 14);
- idx += 14;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->serialIdx], dName->serialLen);
- dName->serialIdx = idx;
- idx += dName->serialLen;
- }
- dName->fullName[idx] = '\0';
- dName->fullNameLen = totalLen;
- }
- }
- #endif /* OPENSSL_EXTRA */
-
- return 0;
-}
-
-
-#ifndef NO_ASN_TIME
-
-/* two byte date/time, add to value */
-static WC_INLINE void GetTime(int* value, const byte* date, int* idx)
-{
- int i = *idx;
-
- *value += btoi(date[i++]) * 10;
- *value += btoi(date[i++]);
-
- *idx = i;
-}
-
-int ExtractDate(const unsigned char* date, unsigned char format,
- struct tm* certTime, int* idx)
-{
- XMEMSET(certTime, 0, sizeof(struct tm));
-
- if (format == ASN_UTC_TIME) {
- if (btoi(date[0]) >= 5)
- certTime->tm_year = 1900;
- else
- certTime->tm_year = 2000;
- }
- else { /* format == GENERALIZED_TIME */
- certTime->tm_year += btoi(date[*idx]) * 1000; *idx = *idx + 1;
- certTime->tm_year += btoi(date[*idx]) * 100; *idx = *idx + 1;
- }
-
- /* adjust tm_year, tm_mon */
- GetTime((int*)&certTime->tm_year, date, idx); certTime->tm_year -= 1900;
- GetTime((int*)&certTime->tm_mon, date, idx); certTime->tm_mon -= 1;
- GetTime((int*)&certTime->tm_mday, date, idx);
- GetTime((int*)&certTime->tm_hour, date, idx);
- GetTime((int*)&certTime->tm_min, date, idx);
- GetTime((int*)&certTime->tm_sec, date, idx);
-
- return 1;
-}
-
-
-#if defined(OPENSSL_ALL) || defined(WOLFSSL_MYSQL_COMPATIBLE) || \
- defined(OPENSSL_EXTRA) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
-int GetTimeString(byte* date, int format, char* buf, int len)
-{
- struct tm t;
- int idx = 0;
-
- if (!ExtractDate(date, (unsigned char)format, &t, &idx)) {
- return 0;
- }
-
- if (date[idx] != 'Z') {
- WOLFSSL_MSG("UTCtime, not Zulu") ;
- return 0;
- }
-
- /* place month in buffer */
- buf[0] = '\0';
- switch(t.tm_mon) {
- case 0: XSTRNCAT(buf, "Jan ", 4); break;
- case 1: XSTRNCAT(buf, "Feb ", 4); break;
- case 2: XSTRNCAT(buf, "Mar ", 4); break;
- case 3: XSTRNCAT(buf, "Apr ", 4); break;
- case 4: XSTRNCAT(buf, "May ", 4); break;
- case 5: XSTRNCAT(buf, "Jun ", 4); break;
- case 6: XSTRNCAT(buf, "Jul ", 4); break;
- case 7: XSTRNCAT(buf, "Aug ", 4); break;
- case 8: XSTRNCAT(buf, "Sep ", 4); break;
- case 9: XSTRNCAT(buf, "Oct ", 4); break;
- case 10: XSTRNCAT(buf, "Nov ", 4); break;
- case 11: XSTRNCAT(buf, "Dec ", 4); break;
- default:
- return 0;
-
- }
- idx = 4; /* use idx now for char buffer */
- buf[idx] = ' ';
-
- XSNPRINTF(buf + idx, len - idx, "%2d %02d:%02d:%02d %d GMT",
- t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec, t.tm_year + 1900);
-
- return 1;
-}
-#endif /* OPENSSL_ALL || WOLFSSL_MYSQL_COMPATIBLE || WOLFSSL_NGINX || WOLFSSL_HAPROXY */
-
-
-#if defined(USE_WOLF_VALIDDATE)
-
-/* to the second */
-static int DateGreaterThan(const struct tm* a, const struct tm* b)
-{
- if (a->tm_year > b->tm_year)
- return 1;
-
- if (a->tm_year == b->tm_year && a->tm_mon > b->tm_mon)
- return 1;
-
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday > b->tm_mday)
- return 1;
-
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday == b->tm_mday && a->tm_hour > b->tm_hour)
- return 1;
-
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday == b->tm_mday && a->tm_hour == b->tm_hour &&
- a->tm_min > b->tm_min)
- return 1;
-
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday == b->tm_mday && a->tm_hour == b->tm_hour &&
- a->tm_min == b->tm_min && a->tm_sec > b->tm_sec)
- return 1;
-
- return 0; /* false */
-}
-
-
-static WC_INLINE int DateLessThan(const struct tm* a, const struct tm* b)
-{
- return DateGreaterThan(b,a);
-}
-
-/* like atoi but only use first byte */
-/* Make sure before and after dates are valid */
-int ValidateDate(const byte* date, byte format, int dateType)
-{
- time_t ltime;
- struct tm certTime;
- struct tm* localTime;
- struct tm* tmpTime = NULL;
- int i = 0;
- int timeDiff = 0 ;
- int diffHH = 0 ; int diffMM = 0 ;
- int diffSign = 0 ;
-
-#if defined(NEED_TMP_TIME)
- struct tm tmpTimeStorage;
- tmpTime = &tmpTimeStorage;
-#else
- (void)tmpTime;
-#endif
-
- ltime = XTIME(0);
-
-#ifdef WOLFSSL_BEFORE_DATE_CLOCK_SKEW
- if (dateType == BEFORE) {
- WOLFSSL_MSG("Skewing local time for before date check");
- ltime += WOLFSSL_BEFORE_DATE_CLOCK_SKEW;
- }
-#endif
-
-#ifdef WOLFSSL_AFTER_DATE_CLOCK_SKEW
- if (dateType == AFTER) {
- WOLFSSL_MSG("Skewing local time for after date check");
- ltime -= WOLFSSL_AFTER_DATE_CLOCK_SKEW;
- }
-#endif
-
- if (!ExtractDate(date, format, &certTime, &i)) {
- WOLFSSL_MSG("Error extracting the date");
- return 0;
- }
-
- if ((date[i] == '+') || (date[i] == '-')) {
- WOLFSSL_MSG("Using time differential, not Zulu") ;
- diffSign = date[i++] == '+' ? 1 : -1 ;
- GetTime(&diffHH, date, &i);
- GetTime(&diffMM, date, &i);
- timeDiff = diffSign * (diffHH*60 + diffMM) * 60 ;
- } else if (date[i] != 'Z') {
- WOLFSSL_MSG("UTCtime, niether Zulu or time differential") ;
- return 0;
- }
-
- ltime -= (time_t)timeDiff ;
- localTime = XGMTIME(<ime, tmpTime);
-
- if (localTime == NULL) {
- WOLFSSL_MSG("XGMTIME failed");
- return 0;
- }
-
- if (dateType == BEFORE) {
- if (DateLessThan(localTime, &certTime)) {
- WOLFSSL_MSG("Date BEFORE check failed");
- return 0;
- }
- }
- else { /* dateType == AFTER */
- if (DateGreaterThan(localTime, &certTime)) {
- WOLFSSL_MSG("Date AFTER check failed");
- return 0;
- }
- }
-
- return 1;
-}
-#endif /* USE_WOLF_VALIDDATE */
-
-int wc_GetTime(void* timePtr, word32 timeSize)
-{
- time_t* ltime = (time_t*)timePtr;
-
- if (timePtr == NULL) {
- return BAD_FUNC_ARG;
- }
-
- if ((word32)sizeof(time_t) > timeSize) {
- return BUFFER_E;
- }
-
- *ltime = XTIME(0);
-
- return 0;
-}
-
-#endif /* !NO_ASN_TIME */
-
-
-/* Get date buffer, format and length. Returns 0=success or error */
-static int GetDateInfo(const byte* source, word32* idx, const byte** pDate,
- byte* pFormat, int* pLength, word32 maxIdx)
-{
- int length;
- byte format;
-
- if (source == NULL || idx == NULL)
- return BAD_FUNC_ARG;
-
- /* get ASN format header */
- if (*idx+1 > maxIdx)
- return BUFFER_E;
- format = source[*idx];
- *idx += 1;
- if (format != ASN_UTC_TIME && format != ASN_GENERALIZED_TIME)
- return ASN_TIME_E;
-
- /* get length */
- if (GetLength(source, idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- if (length > MAX_DATE_SIZE || length < MIN_DATE_SIZE)
- return ASN_DATE_SZ_E;
-
- /* return format, date and length */
- if (pFormat)
- *pFormat = format;
- if (pDate)
- *pDate = &source[*idx];
- if (pLength)
- *pLength = length;
-
- *idx += length;
-
- return 0;
-}
-
-static int GetDate(DecodedCert* cert, int dateType, int verify)
-{
- int ret, length;
- const byte *datePtr = NULL;
- byte date[MAX_DATE_SIZE];
- byte format;
- word32 startIdx = 0;
-
- if (dateType == BEFORE)
- cert->beforeDate = &cert->source[cert->srcIdx];
- else
- cert->afterDate = &cert->source[cert->srcIdx];
- startIdx = cert->srcIdx;
-
- ret = GetDateInfo(cert->source, &cert->srcIdx, &datePtr, &format,
- &length, cert->maxIdx);
- if (ret < 0)
- return ret;
-
- XMEMSET(date, 0, MAX_DATE_SIZE);
- XMEMCPY(date, datePtr, length);
-
- if (dateType == BEFORE)
- cert->beforeDateLen = cert->srcIdx - startIdx;
- else
- cert->afterDateLen = cert->srcIdx - startIdx;
-
-#ifndef NO_ASN_TIME
- if (verify != NO_VERIFY && !XVALIDATE_DATE(date, format, dateType)) {
- if (dateType == BEFORE)
- return ASN_BEFORE_DATE_E;
- else
- return ASN_AFTER_DATE_E;
- }
-#else
- (void)verify;
-#endif
-
- return 0;
-}
-
-static int GetValidity(DecodedCert* cert, int verify)
-{
- int length;
- int badDate = 0;
-
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
-
- if (GetDate(cert, BEFORE, verify) < 0)
- badDate = ASN_BEFORE_DATE_E; /* continue parsing */
-
- if (GetDate(cert, AFTER, verify) < 0)
- return ASN_AFTER_DATE_E;
-
- if (badDate != 0)
- return badDate;
-
- return 0;
-}
-
-
-int wc_GetDateInfo(const byte* certDate, int certDateSz, const byte** date,
- byte* format, int* length)
-{
- int ret;
- word32 idx = 0;
-
- ret = GetDateInfo(certDate, &idx, date, format, length, certDateSz);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-#ifndef NO_ASN_TIME
-int wc_GetDateAsCalendarTime(const byte* date, int length, byte format,
- struct tm* timearg)
-{
- int idx = 0;
- (void)length;
- if (!ExtractDate(date, format, timearg, &idx))
- return ASN_TIME_E;
- return 0;
-}
-
-#if defined(WOLFSSL_CERT_GEN) && defined(WOLFSSL_ALT_NAMES)
-int wc_GetCertDates(Cert* cert, struct tm* before, struct tm* after)
-{
- int ret = 0;
- const byte* date;
- byte format;
- int length;
-
- if (cert == NULL)
- return BAD_FUNC_ARG;
-
- if (before && cert->beforeDateSz > 0) {
- ret = wc_GetDateInfo(cert->beforeDate, cert->beforeDateSz, &date,
- &format, &length);
- if (ret == 0)
- ret = wc_GetDateAsCalendarTime(date, length, format, before);
- }
- if (after && cert->afterDateSz > 0) {
- ret = wc_GetDateInfo(cert->afterDate, cert->afterDateSz, &date,
- &format, &length);
- if (ret == 0)
- ret = wc_GetDateAsCalendarTime(date, length, format, after);
- }
-
- return ret;
-}
-#endif /* WOLFSSL_CERT_GEN && WOLFSSL_ALT_NAMES */
-#endif /* !NO_ASN_TIME */
-
-
-int DecodeToKey(DecodedCert* cert, int verify)
-{
- int badDate = 0;
- int ret;
-
- if ( (ret = GetCertHeader(cert)) < 0)
- return ret;
-
- WOLFSSL_MSG("Got Cert Header");
-
- if ( (ret = GetAlgoId(cert->source, &cert->srcIdx, &cert->signatureOID,
- oidSigType, cert->maxIdx)) < 0)
- return ret;
-
- WOLFSSL_MSG("Got Algo ID");
-
- if ( (ret = GetName(cert, ISSUER)) < 0)
- return ret;
-
- if ( (ret = GetValidity(cert, verify)) < 0)
- badDate = ret;
-
- if ( (ret = GetName(cert, SUBJECT)) < 0)
- return ret;
-
- WOLFSSL_MSG("Got Subject Name");
-
- if ( (ret = GetKey(cert)) < 0)
- return ret;
-
- WOLFSSL_MSG("Got Key");
-
- if (badDate != 0)
- return badDate;
-
- return ret;
-}
-
-static int GetSignature(DecodedCert* cert)
-{
- int length;
- int ret;
- ret = CheckBitString(cert->source, &cert->srcIdx, &length, cert->maxIdx, 1,
- NULL);
- if (ret != 0)
- return ret;
-
- cert->sigLength = length;
- cert->signature = &cert->source[cert->srcIdx];
- cert->srcIdx += cert->sigLength;
-
- return 0;
-}
-
-static word32 SetOctetString8Bit(word32 len, byte* output)
-{
- output[0] = ASN_OCTET_STRING;
- output[1] = (byte)len;
- return 2;
-}
-
-static word32 SetDigest(const byte* digest, word32 digSz, byte* output)
-{
- word32 idx = SetOctetString8Bit(digSz, output);
- XMEMCPY(&output[idx], digest, digSz);
-
- return idx + digSz;
-}
-
-
-static word32 BytePrecision(word32 value)
-{
- word32 i;
- for (i = sizeof(value); i; --i)
- if (value >> ((i - 1) * WOLFSSL_BIT_SIZE))
- break;
-
- return i;
-}
-
-
-WOLFSSL_LOCAL word32 SetLength(word32 length, byte* output)
-{
- word32 i = 0, j;
-
- if (length < ASN_LONG_LENGTH)
- output[i++] = (byte)length;
- else {
- output[i++] = (byte)(BytePrecision(length) | ASN_LONG_LENGTH);
-
- for (j = BytePrecision(length); j; --j) {
- output[i] = (byte)(length >> ((j - 1) * WOLFSSL_BIT_SIZE));
- i++;
- }
- }
-
- return i;
-}
-
-
-WOLFSSL_LOCAL word32 SetSequence(word32 len, byte* output)
-{
- output[0] = ASN_SEQUENCE | ASN_CONSTRUCTED;
- return SetLength(len, output + 1) + 1;
-}
-
-WOLFSSL_LOCAL word32 SetOctetString(word32 len, byte* output)
-{
- output[0] = ASN_OCTET_STRING;
- return SetLength(len, output + 1) + 1;
-}
-
-/* Write a set header to output */
-WOLFSSL_LOCAL word32 SetSet(word32 len, byte* output)
-{
- output[0] = ASN_SET | ASN_CONSTRUCTED;
- return SetLength(len, output + 1) + 1;
-}
-
-WOLFSSL_LOCAL word32 SetImplicit(byte tag, byte number, word32 len, byte* output)
-{
-
- output[0] = ((tag == ASN_SEQUENCE || tag == ASN_SET) ? ASN_CONSTRUCTED : 0)
- | ASN_CONTEXT_SPECIFIC | number;
- return SetLength(len, output + 1) + 1;
-}
-
-WOLFSSL_LOCAL word32 SetExplicit(byte number, word32 len, byte* output)
-{
- output[0] = ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | number;
- return SetLength(len, output + 1) + 1;
-}
-
-
-#if defined(HAVE_ECC)
-
-static int SetCurve(ecc_key* key, byte* output)
-{
-#ifdef HAVE_OID_ENCODING
- int ret;
-#endif
- int idx = 0;
- word32 oidSz = 0;
-
- /* validate key */
- if (key == NULL || key->dp == NULL) {
- return BAD_FUNC_ARG;
- }
-
-#ifdef HAVE_OID_ENCODING
- ret = EncodeObjectId(key->dp->oid, key->dp->oidSz, NULL, &oidSz);
- if (ret != 0) {
- return ret;
- }
-#else
- oidSz = key->dp->oidSz;
-#endif
-
- idx += SetObjectId(oidSz, output);
-
-#ifdef HAVE_OID_ENCODING
- ret = EncodeObjectId(key->dp->oid, key->dp->oidSz, output+idx, &oidSz);
- if (ret != 0) {
- return ret;
- }
-#else
- XMEMCPY(output+idx, key->dp->oid, oidSz);
-#endif
- idx += oidSz;
-
- return idx;
-}
-
-#endif /* HAVE_ECC */
-
-
-#ifdef HAVE_ECC
-static WC_INLINE int IsSigAlgoECDSA(int algoOID)
-{
- /* ECDSA sigAlgo must not have ASN1 NULL parameters */
- if (algoOID == CTC_SHAwECDSA || algoOID == CTC_SHA256wECDSA ||
- algoOID == CTC_SHA384wECDSA || algoOID == CTC_SHA512wECDSA) {
- return 1;
- }
-
- return 0;
-}
-#endif
-
-WOLFSSL_LOCAL word32 SetAlgoID(int algoOID, byte* output, int type, int curveSz)
-{
- word32 tagSz, idSz, seqSz, algoSz = 0;
- const byte* algoName = 0;
- byte ID_Length[1 + MAX_LENGTH_SZ];
- byte seqArray[MAX_SEQ_SZ + 1]; /* add object_id to end */
-
- tagSz = (type == oidHashType ||
- (type == oidSigType
- #ifdef HAVE_ECC
- && !IsSigAlgoECDSA(algoOID)
- #endif
- #ifdef HAVE_ED25519
- && algoOID != ED25519k
- #endif
- ) ||
- (type == oidKeyType && algoOID == RSAk)) ? 2 : 0;
-
- algoName = OidFromId(algoOID, type, &algoSz);
-
- if (algoName == NULL) {
- WOLFSSL_MSG("Unknown Algorithm");
- return 0;
- }
-
- idSz = SetObjectId(algoSz, ID_Length);
- seqSz = SetSequence(idSz + algoSz + tagSz + curveSz, seqArray);
-
- XMEMCPY(output, seqArray, seqSz);
- XMEMCPY(output + seqSz, ID_Length, idSz);
- XMEMCPY(output + seqSz + idSz, algoName, algoSz);
- if (tagSz == 2)
- SetASNNull(&output[seqSz + idSz + algoSz]);
-
- return seqSz + idSz + algoSz + tagSz;
-
-}
-
-
-word32 wc_EncodeSignature(byte* out, const byte* digest, word32 digSz,
- int hashOID)
-{
- byte digArray[MAX_ENCODED_DIG_SZ];
- byte algoArray[MAX_ALGO_SZ];
- byte seqArray[MAX_SEQ_SZ];
- word32 encDigSz, algoSz, seqSz;
-
- encDigSz = SetDigest(digest, digSz, digArray);
- algoSz = SetAlgoID(hashOID, algoArray, oidHashType, 0);
- seqSz = SetSequence(encDigSz + algoSz, seqArray);
-
- XMEMCPY(out, seqArray, seqSz);
- XMEMCPY(out + seqSz, algoArray, algoSz);
- XMEMCPY(out + seqSz + algoSz, digArray, encDigSz);
-
- return encDigSz + algoSz + seqSz;
-}
-
-
-int wc_GetCTC_HashOID(int type)
-{
- int ret;
- enum wc_HashType hType;
-
- hType = wc_HashTypeConvert(type);
- ret = wc_HashGetOID(hType);
- if (ret < 0)
- ret = 0; /* backwards compatibility */
-
- return ret;
-}
-
-void InitSignatureCtx(SignatureCtx* sigCtx, void* heap, int devId)
-{
- if (sigCtx) {
- XMEMSET(sigCtx, 0, sizeof(SignatureCtx));
- sigCtx->devId = devId;
- sigCtx->heap = heap;
- }
-}
-
-void FreeSignatureCtx(SignatureCtx* sigCtx)
-{
- if (sigCtx == NULL)
- return;
-
- if (sigCtx->digest) {
- XFREE(sigCtx->digest, sigCtx->heap, DYNAMIC_TYPE_DIGEST);
- sigCtx->digest = NULL;
- }
-#ifndef NO_RSA
- if (sigCtx->plain) {
- XFREE(sigCtx->plain, sigCtx->heap, DYNAMIC_TYPE_SIGNATURE);
- sigCtx->plain = NULL;
- }
-#endif
- if (sigCtx->key.ptr) {
- switch (sigCtx->keyOID) {
- #ifndef NO_RSA
- case RSAk:
- wc_FreeRsaKey(sigCtx->key.rsa);
- XFREE(sigCtx->key.ptr, sigCtx->heap, DYNAMIC_TYPE_RSA);
- break;
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- wc_ecc_free(sigCtx->key.ecc);
- XFREE(sigCtx->key.ecc, sigCtx->heap, DYNAMIC_TYPE_ECC);
- break;
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- wc_ed25519_free(sigCtx->key.ed25519);
- XFREE(sigCtx->key.ed25519, sigCtx->heap, DYNAMIC_TYPE_ED25519);
- break;
- #endif /* HAVE_ED25519 */
- default:
- break;
- } /* switch (keyOID) */
- sigCtx->key.ptr = NULL;
- }
-
- /* reset state, we are done */
- sigCtx->state = SIG_STATE_BEGIN;
-}
-
-static int HashForSignature(const byte* buf, word32 bufSz, word32 sigOID,
- byte* digest, int* typeH, int* digestSz, int verify)
-{
- int ret = 0;
-
- (void)verify;
-
- switch (sigOID) {
- #if defined(WOLFSSL_MD2)
- case CTC_MD2wRSA:
- if (!verify) {
- ret = HASH_TYPE_E;
- WOLFSSL_MSG("MD2 not supported for signing");
- }
- else if ((ret = wc_Md2Hash(buf, bufSz, digest)) == 0) {
- *typeH = MD2h;
- *digestSz = MD2_DIGEST_SIZE;
- }
- break;
- #endif
- #ifndef NO_MD5
- case CTC_MD5wRSA:
- if ((ret = wc_Md5Hash(buf, bufSz, digest)) == 0) {
- *typeH = MD5h;
- *digestSz = WC_MD5_DIGEST_SIZE;
- }
- break;
- #endif
- #ifndef NO_SHA
- case CTC_SHAwRSA:
- case CTC_SHAwDSA:
- case CTC_SHAwECDSA:
- if ((ret = wc_ShaHash(buf, bufSz, digest)) == 0) {
- *typeH = SHAh;
- *digestSz = WC_SHA_DIGEST_SIZE;
- }
- break;
- #endif
- #ifdef WOLFSSL_SHA224
- case CTC_SHA224wRSA:
- case CTC_SHA224wECDSA:
- if ((ret = wc_Sha224Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA224h;
- *digestSz = WC_SHA224_DIGEST_SIZE;
- }
- break;
- #endif
- #ifndef NO_SHA256
- case CTC_SHA256wRSA:
- case CTC_SHA256wECDSA:
- if ((ret = wc_Sha256Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA256h;
- *digestSz = WC_SHA256_DIGEST_SIZE;
- }
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case CTC_SHA384wRSA:
- case CTC_SHA384wECDSA:
- if ((ret = wc_Sha384Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA384h;
- *digestSz = WC_SHA384_DIGEST_SIZE;
- }
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case CTC_SHA512wRSA:
- case CTC_SHA512wECDSA:
- if ((ret = wc_Sha512Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA512h;
- *digestSz = WC_SHA512_DIGEST_SIZE;
- }
- break;
- #endif
- case CTC_ED25519:
- /* Hashes done in signing operation.
- * Two dependent hashes with prefixes performed.
- */
- break;
- default:
- ret = HASH_TYPE_E;
- WOLFSSL_MSG("Hash for Signature has unsupported type");
- }
-
- return ret;
-}
-
-/* Return codes: 0=Success, Negative (see error-crypt.h), ASN_SIG_CONFIRM_E */
-static int ConfirmSignature(SignatureCtx* sigCtx,
- const byte* buf, word32 bufSz,
- const byte* key, word32 keySz, word32 keyOID,
- const byte* sig, word32 sigSz, word32 sigOID)
-{
- int ret = 0;
-
- if (sigCtx == NULL || buf == NULL || bufSz == 0 || key == NULL ||
- keySz == 0 || sig == NULL || sigSz == 0) {
- return BAD_FUNC_ARG;
- }
-
- (void)key;
- (void)keySz;
- (void)sig;
- (void)sigSz;
-
- WOLFSSL_ENTER("ConfirmSignature");
-
- switch (sigCtx->state) {
- case SIG_STATE_BEGIN:
- {
- sigCtx->digest = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, sigCtx->heap,
- DYNAMIC_TYPE_DIGEST);
- if (sigCtx->digest == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
-
- sigCtx->state = SIG_STATE_HASH;
- } /* SIG_STATE_BEGIN */
- FALL_THROUGH;
-
- case SIG_STATE_HASH:
- {
- ret = HashForSignature(buf, bufSz, sigOID, sigCtx->digest,
- &sigCtx->typeH, &sigCtx->digestSz, 1);
- if (ret != 0) {
- goto exit_cs;
- }
-
- sigCtx->state = SIG_STATE_KEY;
- } /* SIG_STATE_HASH */
- FALL_THROUGH;
-
- case SIG_STATE_KEY:
- {
- sigCtx->keyOID = keyOID;
-
- switch (keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- word32 idx = 0;
-
- sigCtx->key.rsa = (RsaKey*)XMALLOC(sizeof(RsaKey),
- sigCtx->heap, DYNAMIC_TYPE_RSA);
- sigCtx->plain = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ,
- sigCtx->heap, DYNAMIC_TYPE_SIGNATURE);
- if (sigCtx->key.rsa == NULL || sigCtx->plain == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- if ((ret = wc_InitRsaKey_ex(sigCtx->key.rsa, sigCtx->heap,
- sigCtx->devId)) != 0) {
- goto exit_cs;
- }
- if (sigSz > MAX_ENCODED_SIG_SZ) {
- WOLFSSL_MSG("Verify Signature is too big");
- ERROR_OUT(BUFFER_E, exit_cs);
- }
- if ((ret = wc_RsaPublicKeyDecode(key, &idx, sigCtx->key.rsa,
- keySz)) != 0) {
- WOLFSSL_MSG("ASN Key decode error RSA");
- goto exit_cs;
- }
- XMEMCPY(sigCtx->plain, sig, sigSz);
- sigCtx->out = NULL;
-
- #ifdef WOLFSSL_ASYNC_CRYPT
- sigCtx->asyncDev = &sigCtx->key.rsa->asyncDev;
- #endif
- break;
- }
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- word32 idx = 0;
-
- sigCtx->verify = 0;
- sigCtx->key.ecc = (ecc_key*)XMALLOC(sizeof(ecc_key),
- sigCtx->heap, DYNAMIC_TYPE_ECC);
- if (sigCtx->key.ecc == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- if ((ret = wc_ecc_init_ex(sigCtx->key.ecc, sigCtx->heap,
- sigCtx->devId)) < 0) {
- goto exit_cs;
- }
- ret = wc_EccPublicKeyDecode(key, &idx, sigCtx->key.ecc,
- keySz);
- if (ret < 0) {
- WOLFSSL_MSG("ASN Key import error ECC");
- goto exit_cs;
- }
- #ifdef WOLFSSL_ASYNC_CRYPT
- sigCtx->asyncDev = &sigCtx->key.ecc->asyncDev;
- #endif
- break;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- sigCtx->verify = 0;
- sigCtx->key.ed25519 = (ed25519_key*)XMALLOC(
- sizeof(ed25519_key), sigCtx->heap,
- DYNAMIC_TYPE_ED25519);
- if (sigCtx->key.ed25519 == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- if ((ret = wc_ed25519_init(sigCtx->key.ed25519)) < 0) {
- goto exit_cs;
- }
- if ((ret = wc_ed25519_import_public(key, keySz,
- sigCtx->key.ed25519)) < 0) {
- WOLFSSL_MSG("ASN Key import error ED25519");
- goto exit_cs;
- }
- #ifdef WOLFSSL_ASYNC_CRYPT
- sigCtx->asyncDev = &sigCtx->key.ed25519->asyncDev;
- #endif
- break;
- }
- #endif
- default:
- WOLFSSL_MSG("Verify Key type unknown");
- ret = ASN_UNKNOWN_OID_E;
- break;
- } /* switch (keyOID) */
-
- if (ret != 0) {
- goto exit_cs;
- }
-
- sigCtx->state = SIG_STATE_DO;
-
- #ifdef WOLFSSL_ASYNC_CRYPT
- if (sigCtx->devId != INVALID_DEVID && sigCtx->asyncDev && sigCtx->asyncCtx) {
- /* make sure event is intialized */
- WOLF_EVENT* event = &sigCtx->asyncDev->event;
- ret = wolfAsync_EventInit(event, WOLF_EVENT_TYPE_ASYNC_WOLFSSL,
- sigCtx->asyncCtx, WC_ASYNC_FLAG_CALL_AGAIN);
- }
- #endif
- } /* SIG_STATE_KEY */
- FALL_THROUGH;
-
- case SIG_STATE_DO:
- {
- switch (keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- #ifdef HAVE_PK_CALLBACKS
- if (sigCtx->pkCbRsa) {
- ret = sigCtx->pkCbRsa(
- sigCtx->plain, sigSz, &sigCtx->out,
- key, keySz,
- sigCtx->pkCtxRsa);
- }
- else
- #endif /* HAVE_PK_CALLBACKS */
- {
- ret = wc_RsaSSL_VerifyInline(sigCtx->plain, sigSz,
- &sigCtx->out, sigCtx->key.rsa);
- }
- break;
- }
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- #ifdef HAVE_PK_CALLBACKS
- if (sigCtx->pkCbEcc) {
- ret = sigCtx->pkCbEcc(
- sig, sigSz,
- sigCtx->digest, sigCtx->digestSz,
- key, keySz, &sigCtx->verify,
- sigCtx->pkCtxEcc);
- }
- else
- #endif /* HAVE_PK_CALLBACKS */
- {
- ret = wc_ecc_verify_hash(sig, sigSz, sigCtx->digest,
- sigCtx->digestSz, &sigCtx->verify,
- sigCtx->key.ecc);
- }
- break;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- ret = wc_ed25519_verify_msg(sig, sigSz, buf, bufSz,
- &sigCtx->verify, sigCtx->key.ed25519);
- break;
- }
- #endif
- default:
- break;
- } /* switch (keyOID) */
-
- if (ret < 0) {
- /* treat all non async RSA errors as ASN_SIG_CONFIRM_E */
- if (ret != WC_PENDING_E)
- ret = ASN_SIG_CONFIRM_E;
- goto exit_cs;
- }
-
- sigCtx->state = SIG_STATE_CHECK;
- } /* SIG_STATE_DO */
- FALL_THROUGH;
-
- case SIG_STATE_CHECK:
- {
- switch (keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- int encodedSigSz, verifySz;
- #ifdef WOLFSSL_SMALL_STACK
- byte* encodedSig = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ,
- sigCtx->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (encodedSig == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- #else
- byte encodedSig[MAX_ENCODED_SIG_SZ];
- #endif
-
- verifySz = ret;
-
- /* make sure we're right justified */
- encodedSigSz = wc_EncodeSignature(encodedSig,
- sigCtx->digest, sigCtx->digestSz, sigCtx->typeH);
- if (encodedSigSz == verifySz && sigCtx->out != NULL &&
- XMEMCMP(sigCtx->out, encodedSig, encodedSigSz) == 0) {
- ret = 0;
- }
- else {
- WOLFSSL_MSG("RSA SSL verify match encode error");
- ret = ASN_SIG_CONFIRM_E;
- }
-
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(encodedSig, sigCtx->heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- break;
- }
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- if (sigCtx->verify == 1) {
- ret = 0;
- }
- else {
- WOLFSSL_MSG("ECC Verify didn't match");
- ret = ASN_SIG_CONFIRM_E;
- }
- break;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- if (sigCtx->verify == 1) {
- ret = 0;
- }
- else {
- WOLFSSL_MSG("ED25519 Verify didn't match");
- ret = ASN_SIG_CONFIRM_E;
- }
- break;
- }
- #endif /* HAVE_ED25519 */
- default:
- break;
- } /* switch (keyOID) */
-
- break;
- } /* SIG_STATE_CHECK */
- } /* switch (sigCtx->state) */
-
-exit_cs:
-
- WOLFSSL_LEAVE("ConfirmSignature", ret);
-
- if (ret != WC_PENDING_E) {
- FreeSignatureCtx(sigCtx);
- }
-
- return ret;
-}
-
-
-#ifndef IGNORE_NAME_CONSTRAINTS
-
-static int MatchBaseName(int type, const char* name, int nameSz,
- const char* base, int baseSz)
-{
- if (base == NULL || baseSz <= 0 || name == NULL || nameSz <= 0 ||
- name[0] == '.' || nameSz < baseSz ||
- (type != ASN_RFC822_TYPE && type != ASN_DNS_TYPE))
- return 0;
-
- /* If an email type, handle special cases where the base is only
- * a domain, or is an email address itself. */
- if (type == ASN_RFC822_TYPE) {
- const char* p = NULL;
- int count = 0;
-
- if (base[0] != '.') {
- p = base;
- count = 0;
-
- /* find the '@' in the base */
- while (*p != '@' && count < baseSz) {
- count++;
- p++;
- }
-
- /* No '@' in base, reset p to NULL */
- if (count >= baseSz)
- p = NULL;
- }
-
- if (p == NULL) {
- /* Base isn't an email address, it is a domain name,
- * wind the name forward one character past its '@'. */
- p = name;
- count = 0;
- while (*p != '@' && count < baseSz) {
- count++;
- p++;
- }
-
- if (count < baseSz && *p == '@') {
- name = p + 1;
- nameSz -= count + 1;
- }
- }
- }
-
- if ((type == ASN_DNS_TYPE || type == ASN_RFC822_TYPE) && base[0] == '.') {
- int szAdjust = nameSz - baseSz;
- name += szAdjust;
- nameSz -= szAdjust;
- }
-
- while (nameSz > 0) {
- if (XTOLOWER((unsigned char)*name++) !=
- XTOLOWER((unsigned char)*base++))
- return 0;
- nameSz--;
- }
-
- return 1;
-}
-
-
-static int ConfirmNameConstraints(Signer* signer, DecodedCert* cert)
-{
- if (signer == NULL || cert == NULL)
- return 0;
-
- /* Check against the excluded list */
- if (signer->excludedNames) {
- Base_entry* base = signer->excludedNames;
-
- while (base != NULL) {
- switch (base->type) {
- case ASN_DNS_TYPE:
- {
- DNS_entry* name = cert->altNames;
- while (name != NULL) {
- if (MatchBaseName(ASN_DNS_TYPE,
- name->name, name->len,
- base->name, base->nameSz)) {
- return 0;
- }
- name = name->next;
- }
- break;
- }
- case ASN_RFC822_TYPE:
- {
- DNS_entry* name = cert->altEmailNames;
- while (name != NULL) {
- if (MatchBaseName(ASN_RFC822_TYPE,
- name->name, name->len,
- base->name, base->nameSz)) {
- return 0;
- }
- name = name->next;
- }
- break;
- }
- case ASN_DIR_TYPE:
- {
- /* allow permitted dirName smaller than actual subject */
- if (cert->subjectRawLen >= base->nameSz &&
- XMEMCMP(cert->subjectRaw, base->name,
- base->nameSz) == 0) {
- return 0;
- }
- break;
- }
- }; /* switch */
- base = base->next;
- }
- }
-
- /* Check against the permitted list */
- if (signer->permittedNames != NULL) {
- int needDns = 0;
- int matchDns = 0;
- int needEmail = 0;
- int matchEmail = 0;
- int needDir = 0;
- int matchDir = 0;
- Base_entry* base = signer->permittedNames;
-
- while (base != NULL) {
- switch (base->type) {
- case ASN_DNS_TYPE:
- {
- DNS_entry* name = cert->altNames;
-
- if (name != NULL)
- needDns = 1;
-
- while (name != NULL) {
- matchDns = MatchBaseName(ASN_DNS_TYPE,
- name->name, name->len,
- base->name, base->nameSz);
- name = name->next;
- }
- break;
- }
- case ASN_RFC822_TYPE:
- {
- DNS_entry* name = cert->altEmailNames;
-
- if (name != NULL)
- needEmail = 1;
-
- while (name != NULL) {
- matchEmail = MatchBaseName(ASN_DNS_TYPE,
- name->name, name->len,
- base->name, base->nameSz);
- name = name->next;
- }
- break;
- }
- case ASN_DIR_TYPE:
- {
- /* allow permitted dirName smaller than actual subject */
- needDir = 1;
- if (cert->subjectRaw != NULL &&
- cert->subjectRawLen >= base->nameSz &&
- XMEMCMP(cert->subjectRaw, base->name,
- base->nameSz) == 0) {
- matchDir = 1;
- }
- break;
- }
- } /* switch */
- base = base->next;
- }
-
- if ((needDns && !matchDns) ||
- (needEmail && !matchEmail) ||
- (needDir && !matchDir)) {
- return 0;
- }
- }
-
- return 1;
-}
-
-#endif /* IGNORE_NAME_CONSTRAINTS */
-
-static int DecodeAltNames(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0;
- int length = 0;
-
- WOLFSSL_ENTER("DecodeAltNames");
-
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tBad Sequence");
- return ASN_PARSE_E;
- }
-
- cert->weOwnAltNames = 1;
-
- while (length > 0) {
- byte b = input[idx++];
-
- length--;
-
- /* Save DNS Type names in the altNames list. */
- /* Save Other Type names in the cert's OidMap */
- if (b == (ASN_CONTEXT_SPECIFIC | ASN_DNS_TYPE)) {
- DNS_entry* dnsEntry;
- int strLen;
- word32 lenStartIdx = idx;
-
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str length");
- return ASN_PARSE_E;
- }
- length -= (idx - lenStartIdx);
-
- dnsEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (dnsEntry == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
-
- dnsEntry->type = ASN_DNS_TYPE;
- dnsEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (dnsEntry->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(dnsEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- dnsEntry->len = strLen;
- XMEMCPY(dnsEntry->name, &input[idx], strLen);
- dnsEntry->name[strLen] = '\0';
-
- dnsEntry->next = cert->altNames;
- cert->altNames = dnsEntry;
-
- length -= strLen;
- idx += strLen;
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_RFC822_TYPE)) {
- DNS_entry* emailEntry;
- int strLen;
- word32 lenStartIdx = idx;
-
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str length");
- return ASN_PARSE_E;
- }
- length -= (idx - lenStartIdx);
-
- emailEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (emailEntry == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
-
- emailEntry->type = ASN_RFC822_TYPE;
- emailEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (emailEntry->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(emailEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- emailEntry->len = strLen;
- XMEMCPY(emailEntry->name, &input[idx], strLen);
- emailEntry->name[strLen] = '\0';
-
- emailEntry->next = cert->altEmailNames;
- cert->altEmailNames = emailEntry;
-
- length -= strLen;
- idx += strLen;
- }
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_URI_TYPE)) {
- DNS_entry* uriEntry;
- int strLen;
- word32 lenStartIdx = idx;
-
- WOLFSSL_MSG("\tPutting URI into list but not using");
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str length");
- return ASN_PARSE_E;
- }
- length -= (idx - lenStartIdx);
-
- /* check that strLen at index is not past input buffer */
- if (strLen + (int)idx > sz) {
- return BUFFER_E;
- }
-
- #ifndef WOLFSSL_NO_ASN_STRICT
- /* Verify RFC 5280 Sec 4.2.1.6 rule:
- "The name MUST NOT be a relative URI" */
-
- {
- int i;
-
- /* skip past scheme (i.e http,ftp,...) finding first ':' char */
- for (i = 0; i < strLen; i++) {
- if (input[idx + i] == ':') {
- break;
- }
- if (input[idx + i] == '/') {
- i = strLen; /* error, found relative path since '/' was
- * encountered before ':'. Returning error
- * value in next if statement. */
- }
- }
-
- /* test if no ':' char was found and test that the next two
- * chars are // to match the pattern "://" */
- if (i >= strLen - 2 || (input[idx + i + 1] != '/' ||
- input[idx + i + 2] != '/')) {
- WOLFSSL_MSG("\tAlt Name must be absolute URI");
- return ASN_ALT_NAME_E;
- }
- }
- #endif
-
- uriEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (uriEntry == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
-
- uriEntry->type = ASN_URI_TYPE;
- uriEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (uriEntry->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(uriEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- uriEntry->len = strLen;
- XMEMCPY(uriEntry->name, &input[idx], strLen);
- uriEntry->name[strLen] = '\0';
-
- uriEntry->next = cert->altNames;
- cert->altNames = uriEntry;
-
- length -= strLen;
- idx += strLen;
- }
-#endif /* IGNORE_NAME_CONSTRAINTS */
-#ifdef WOLFSSL_SEP
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | ASN_OTHER_TYPE))
- {
- int strLen;
- word32 lenStartIdx = idx;
- word32 oid = 0;
- int ret;
-
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: other name length");
- return ASN_PARSE_E;
- }
- /* Consume the rest of this sequence. */
- length -= (strLen + idx - lenStartIdx);
-
- if (GetObjectId(input, &idx, &oid, oidCertAltNameType, sz) < 0) {
- WOLFSSL_MSG("\tbad OID");
- return ASN_PARSE_E;
- }
-
- if (oid != HW_NAME_OID) {
- WOLFSSL_MSG("\tincorrect OID");
- return ASN_PARSE_E;
- }
-
- if (input[idx++] != (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED)) {
- WOLFSSL_MSG("\twrong type");
- return ASN_PARSE_E;
- }
-
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str len");
- return ASN_PARSE_E;
- }
-
- if (GetSequence(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tBad Sequence");
- return ASN_PARSE_E;
- }
-
- ret = GetASNObjectId(input, &idx, &strLen, sz);
- if (ret != 0) {
- WOLFSSL_MSG("\tbad OID");
- return ret;
- }
-
- cert->hwType = (byte*)XMALLOC(strLen, cert->heap,
- DYNAMIC_TYPE_X509_EXT);
- if (cert->hwType == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
-
- XMEMCPY(cert->hwType, &input[idx], strLen);
- cert->hwTypeSz = strLen;
- idx += strLen;
-
- ret = GetOctetString(input, &idx, &strLen, sz);
- if (ret < 0)
- return ret;
-
- cert->hwSerialNum = (byte*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_X509_EXT);
- if (cert->hwSerialNum == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
-
- XMEMCPY(cert->hwSerialNum, &input[idx], strLen);
- cert->hwSerialNum[strLen] = '\0';
- cert->hwSerialNumSz = strLen;
- idx += strLen;
- }
- #endif /* WOLFSSL_SEP */
- else {
- int strLen;
- word32 lenStartIdx = idx;
-
- WOLFSSL_MSG("\tUnsupported name type, skipping");
-
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: unsupported name length");
- return ASN_PARSE_E;
- }
- length -= (strLen + idx - lenStartIdx);
- idx += strLen;
- }
- }
- return 0;
-}
-
-static int DecodeBasicCaConstraint(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0;
- int length = 0;
- int ret;
-
- WOLFSSL_ENTER("DecodeBasicCaConstraint");
-
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: bad SEQUENCE");
- return ASN_PARSE_E;
- }
-
- if (length == 0)
- return 0;
-
- /* If the basic ca constraint is false, this extension may be named, but
- * left empty. So, if the length is 0, just return. */
-
- ret = GetBoolean(input, &idx, sz);
- if (ret < 0) {
- WOLFSSL_MSG("\tfail: constraint not valid BOOLEAN");
- return ret;
- }
-
- cert->isCA = (byte)ret;
-
- /* If there isn't any more data, return. */
- if (idx >= (word32)sz)
- return 0;
-
- ret = GetInteger7Bit(input, &idx, sz);
- if (ret < 0)
- return ret;
-
- cert->pathLength = (byte)ret;
- cert->pathLengthSet = 1;
-
- return 0;
-}
-
-
-#define CRLDP_FULL_NAME 0
- /* From RFC3280 SS4.2.1.14, Distribution Point Name*/
-#define GENERALNAME_URI 6
- /* From RFC3280 SS4.2.1.7, GeneralName */
-
-static int DecodeCrlDist(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0;
- int length = 0;
-
- WOLFSSL_ENTER("DecodeCrlDist");
-
- /* Unwrap the list of Distribution Points*/
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- /* Unwrap a single Distribution Point */
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- /* The Distribution Point has three explicit optional members
- * First check for a DistributionPointName
- */
- if (input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 0))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- if (input[idx] ==
- (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | CRLDP_FULL_NAME))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- if (input[idx] == (ASN_CONTEXT_SPECIFIC | GENERALNAME_URI))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- cert->extCrlInfoSz = length;
- cert->extCrlInfo = input + idx;
- idx += length;
- }
- else
- /* This isn't a URI, skip it. */
- idx += length;
- }
- else {
- /* This isn't a FULLNAME, skip it. */
- idx += length;
- }
- }
-
- /* Check for reasonFlags */
- if (idx < (word32)sz &&
- input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
-
- /* Check for cRLIssuer */
- if (idx < (word32)sz &&
- input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 2))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
-
- if (idx < (word32)sz)
- {
- WOLFSSL_MSG("\tThere are more CRL Distribution Point records, "
- "but we only use the first one.");
- }
-
- return 0;
-}
-
-
-static int DecodeAuthInfo(byte* input, int sz, DecodedCert* cert)
-/*
- * Read the first of the Authority Information Access records. If there are
- * any issues, return without saving the record.
- */
-{
- word32 idx = 0;
- int length = 0;
- byte b;
- word32 oid;
-
- WOLFSSL_ENTER("DecodeAuthInfo");
-
- /* Unwrap the list of AIAs */
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- while (idx < (word32)sz) {
- /* Unwrap a single AIA */
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- oid = 0;
- if (GetObjectId(input, &idx, &oid, oidCertAuthInfoType, sz) < 0)
- return ASN_PARSE_E;
-
-
- /* Only supporting URIs right now. */
- b = input[idx++];
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- if (b == (ASN_CONTEXT_SPECIFIC | GENERALNAME_URI) &&
- oid == AIA_OCSP_OID)
- {
- cert->extAuthInfoSz = length;
- cert->extAuthInfo = input + idx;
- break;
- }
- idx += length;
- }
-
- return 0;
-}
-
-
-static int DecodeAuthKeyId(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0;
- int length = 0, ret = 0;
-
- WOLFSSL_ENTER("DecodeAuthKeyId");
-
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE\n");
- return ASN_PARSE_E;
- }
-
- if (input[idx++] != (ASN_CONTEXT_SPECIFIC | 0)) {
- WOLFSSL_MSG("\tinfo: OPTIONAL item 0, not available\n");
- return 0;
- }
-
- if (GetLength(input, &idx, &length, sz) <= 0) {
- WOLFSSL_MSG("\tfail: extension data length");
- return ASN_PARSE_E;
- }
-
-#if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extAuthKeyIdSrc = &input[idx];
- cert->extAuthKeyIdSz = length;
-#endif /* OPENSSL_EXTRA */
-
- if (length == KEYID_SIZE) {
- XMEMCPY(cert->extAuthKeyId, input + idx, length);
- }
- else {
- #ifdef NO_SHA
- ret = wc_Sha256Hash(input + idx, length, cert->extAuthKeyId);
- #else
- ret = wc_ShaHash(input + idx, length, cert->extAuthKeyId);
- #endif
- }
-
- return ret;
-}
-
-
-static int DecodeSubjKeyId(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0;
- int length = 0, ret = 0;
-
- WOLFSSL_ENTER("DecodeSubjKeyId");
-
- if (sz <= 0)
- return ASN_PARSE_E;
-
- ret = GetOctetString(input, &idx, &length, sz);
- if (ret < 0)
- return ret;
-
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extSubjKeyIdSrc = &input[idx];
- cert->extSubjKeyIdSz = length;
- #endif /* OPENSSL_EXTRA */
-
- if (length == SIGNER_DIGEST_SIZE) {
- XMEMCPY(cert->extSubjKeyId, input + idx, length);
- }
- else {
- #ifdef NO_SHA
- ret = wc_Sha256Hash(input + idx, length, cert->extSubjKeyId);
- #else
- ret = wc_ShaHash(input + idx, length, cert->extSubjKeyId);
- #endif
- }
-
- return ret;
-}
-
-
-static int DecodeKeyUsage(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0;
- int length;
- int ret;
- WOLFSSL_ENTER("DecodeKeyUsage");
-
- ret = CheckBitString(input, &idx, &length, sz, 0, NULL);
- if (ret != 0)
- return ret;
-
- cert->extKeyUsage = (word16)(input[idx]);
- if (length == 2)
- cert->extKeyUsage |= (word16)(input[idx+1] << 8);
-
- return 0;
-}
-
-
-static int DecodeExtKeyUsage(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0, oid;
- int length;
-
- WOLFSSL_ENTER("DecodeExtKeyUsage");
-
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
-
-#if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extExtKeyUsageSrc = input + idx;
- cert->extExtKeyUsageSz = length;
-#endif
-
- while (idx < (word32)sz) {
- if (GetObjectId(input, &idx, &oid, oidCertKeyUseType, sz) < 0)
- return ASN_PARSE_E;
-
- switch (oid) {
- case EKU_ANY_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_ANY;
- break;
- case EKU_SERVER_AUTH_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_SERVER_AUTH;
- break;
- case EKU_CLIENT_AUTH_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_CLIENT_AUTH;
- break;
- case EKU_CODESIGNING_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_CODESIGN;
- break;
- case EKU_EMAILPROTECT_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_EMAILPROT;
- break;
- case EKU_TIMESTAMP_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_TIMESTAMP;
- break;
- case EKU_OCSP_SIGN_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_OCSP_SIGN;
- break;
- }
-
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extExtKeyUsageCount++;
- #endif
- }
-
- return 0;
-}
-
-
-#ifndef IGNORE_NAME_CONSTRAINTS
-#define ASN_TYPE_MASK 0xF
-static int DecodeSubtree(byte* input, int sz, Base_entry** head, void* heap)
-{
- word32 idx = 0;
-
- (void)heap;
-
- while (idx < (word32)sz) {
- int seqLength, strLength;
- word32 nameIdx;
- byte b, bType;
-
- if (GetSequence(input, &idx, &seqLength, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
- nameIdx = idx;
- b = input[nameIdx++];
-
- if (GetLength(input, &nameIdx, &strLength, sz) <= 0) {
- WOLFSSL_MSG("\tinvalid length");
- return ASN_PARSE_E;
- }
-
- /* Get type, LSB 4-bits */
- bType = (b & ASN_TYPE_MASK);
-
- if (bType == ASN_DNS_TYPE || bType == ASN_RFC822_TYPE ||
- bType == ASN_DIR_TYPE) {
- Base_entry* entry;
-
- /* if constructed has leading sequence */
- if (b & ASN_CONSTRUCTED) {
- if (GetSequence(input, &nameIdx, &strLength, sz) < 0) {
- WOLFSSL_MSG("\tfail: constructed be a SEQUENCE");
- return ASN_PARSE_E;
- }
- }
-
- entry = (Base_entry*)XMALLOC(sizeof(Base_entry), heap,
- DYNAMIC_TYPE_ALTNAME);
- if (entry == NULL) {
- WOLFSSL_MSG("allocate error");
- return MEMORY_E;
- }
-
- entry->name = (char*)XMALLOC(strLength, heap, DYNAMIC_TYPE_ALTNAME);
- if (entry->name == NULL) {
- WOLFSSL_MSG("allocate error");
- XFREE(entry, heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
-
- XMEMCPY(entry->name, &input[nameIdx], strLength);
- entry->nameSz = strLength;
- entry->type = bType;
-
- entry->next = *head;
- *head = entry;
- }
-
- idx += seqLength;
- }
-
- return 0;
-}
-
-
-static int DecodeNameConstraints(byte* input, int sz, DecodedCert* cert)
-{
- word32 idx = 0;
- int length = 0;
-
- WOLFSSL_ENTER("DecodeNameConstraints");
-
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
-
- while (idx < (word32)sz) {
- byte b = input[idx++];
- Base_entry** subtree = NULL;
-
- if (GetLength(input, &idx, &length, sz) <= 0) {
- WOLFSSL_MSG("\tinvalid length");
- return ASN_PARSE_E;
- }
-
- if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 0))
- subtree = &cert->permittedNames;
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1))
- subtree = &cert->excludedNames;
- else {
- WOLFSSL_MSG("\tinvalid subtree");
- return ASN_PARSE_E;
- }
-
- DecodeSubtree(input + idx, length, subtree, cert->heap);
-
- idx += length;
- }
-
- return 0;
-}
-#endif /* IGNORE_NAME_CONSTRAINTS */
-
-#if (defined(WOLFSSL_CERT_EXT) && !defined(WOLFSSL_SEP)) || defined(OPENSSL_EXTRA)
-
-static int Word32ToString(char* d, word32 number)
-{
- int i = 0;
-
- if (d != NULL) {
- word32 order = 1000000000;
- word32 digit;
-
- if (number == 0) {
- d[i++] = '0';
- }
- else {
- while (order) {
- digit = number / order;
- if (i > 0 || digit != 0) {
- d[i++] = (char)digit + '0';
- }
- if (digit != 0)
- number %= digit * order;
- if (order > 1)
- order /= 10;
- else
- order = 0;
- }
- }
- d[i] = 0;
- }
-
- return i;
-}
-
-
-/* Decode ITU-T X.690 OID format to a string representation
- * return string length */
-int DecodePolicyOID(char *out, word32 outSz, byte *in, word32 inSz)
-{
- word32 val, idx = 0, nb_bytes;
- size_t w_bytes = 0;
-
- if (out == NULL || in == NULL || outSz < 4 || inSz < 2)
- return BAD_FUNC_ARG;
-
- /* first two byte must be interpreted as : 40 * int1 + int2 */
- val = (word16)in[idx++];
-
- w_bytes = Word32ToString(out, val / 40);
- out[w_bytes++] = '.';
- w_bytes += Word32ToString(out+w_bytes, val % 40);
-
- while (idx < inSz) {
- /* init value */
- val = 0;
- nb_bytes = 0;
-
- /* check that output size is ok */
- if (w_bytes > (outSz - 3))
- return BUFFER_E;
-
- /* first bit is used to set if value is coded on 1 or multiple bytes */
- while ((in[idx+nb_bytes] & 0x80))
- nb_bytes++;
-
- if (!nb_bytes)
- val = (word32)(in[idx++] & 0x7f);
- else {
- word32 base = 1, tmp = nb_bytes;
-
- while (tmp != 0) {
- val += (word32)(in[idx+tmp] & 0x7f) * base;
- base *= 128;
- tmp--;
- }
- val += (word32)(in[idx++] & 0x7f) * base;
-
- idx += nb_bytes;
- }
-
- out[w_bytes++] = '.';
- w_bytes += Word32ToString(out+w_bytes, val);
- }
-
- return (int)w_bytes;
-}
-#endif /* WOLFSSL_CERT_EXT && !WOLFSSL_SEP */
-
-#if defined(WOLFSSL_SEP) || defined(WOLFSSL_CERT_EXT)
- /* Reference: https://tools.ietf.org/html/rfc5280#section-4.2.1.4 */
- static int DecodeCertPolicy(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- word32 oldIdx;
- int ret;
- int total_length = 0, policy_length = 0, length = 0;
- #if !defined(WOLFSSL_SEP) && defined(WOLFSSL_CERT_EXT) && \
- !defined(WOLFSSL_DUP_CERTPOL)
- int i;
- #endif
-
- WOLFSSL_ENTER("DecodeCertPolicy");
-
- if (GetSequence(input, &idx, &total_length, sz) < 0) {
- WOLFSSL_MSG("\tGet CertPolicy total seq failed");
- return ASN_PARSE_E;
- }
-
- /* Validate total length */
- if (total_length > (sz - (int)idx)) {
- WOLFSSL_MSG("\tCertPolicy length mismatch");
- return ASN_PARSE_E;
- }
-
- /* Unwrap certificatePolicies */
- do {
- if (GetSequence(input, &idx, &policy_length, sz) < 0) {
- WOLFSSL_MSG("\tGet CertPolicy seq failed");
- return ASN_PARSE_E;
- }
-
- oldIdx = idx;
- ret = GetASNObjectId(input, &idx, &length, sz);
- if (ret != 0)
- return ret;
- policy_length -= idx - oldIdx;
-
- if (length > 0) {
- /* Verify length won't overrun buffer */
- if (length > (sz - (int)idx)) {
- WOLFSSL_MSG("\tCertPolicy length exceeds input buffer");
- return ASN_PARSE_E;
- }
-
- #if defined(WOLFSSL_SEP)
- cert->deviceType = (byte*)XMALLOC(length, cert->heap,
- DYNAMIC_TYPE_X509_EXT);
- if (cert->deviceType == NULL) {
- WOLFSSL_MSG("\tCouldn't alloc memory for deviceType");
- return MEMORY_E;
- }
- cert->deviceTypeSz = length;
- XMEMCPY(cert->deviceType, input + idx, length);
- break;
- #elif defined(WOLFSSL_CERT_EXT)
- /* decode cert policy */
- if (DecodePolicyOID(cert->extCertPolicies[cert->extCertPoliciesNb], MAX_CERTPOL_SZ,
- input + idx, length) <= 0) {
- WOLFSSL_MSG("\tCouldn't decode CertPolicy");
- return ASN_PARSE_E;
- }
- #ifndef WOLFSSL_DUP_CERTPOL
- /* From RFC 5280 section 4.2.1.3 "A certificate policy OID MUST
- * NOT appear more than once in a certificate policies
- * extension". This is a sanity check for duplicates.
- * extCertPolicies should only have OID values, additional
- * qualifiers need to be stored in a seperate array. */
- for (i = 0; i < cert->extCertPoliciesNb; i++) {
- if (XMEMCMP(cert->extCertPolicies[i],
- cert->extCertPolicies[cert->extCertPoliciesNb],
- MAX_CERTPOL_SZ) == 0) {
- WOLFSSL_MSG("Duplicate policy OIDs not allowed");
- WOLFSSL_MSG("Use WOLFSSL_DUP_CERTPOL if wanted");
- return CERTPOLICIES_E;
- }
- }
- #endif /* !WOLFSSL_DUP_CERTPOL */
- cert->extCertPoliciesNb++;
- #else
- WOLFSSL_LEAVE("DecodeCertPolicy : unsupported mode", 0);
- return 0;
- #endif
- }
- idx += policy_length;
- } while((int)idx < total_length
- #if defined(WOLFSSL_CERT_EXT)
- && cert->extCertPoliciesNb < MAX_CERTPOL_NB
- #endif
- );
-
- WOLFSSL_LEAVE("DecodeCertPolicy", 0);
- return 0;
- }
-#endif /* WOLFSSL_SEP */
-
-/* Macro to check if bit is set, if not sets and return success.
- Otherwise returns failure */
-/* Macro required here because bit-field operation */
-#ifndef WOLFSSL_NO_ASN_STRICT
- #define VERIFY_AND_SET_OID(bit) \
- if (bit == 0) \
- bit = 1; \
- else \
- return ASN_OBJECT_ID_E;
-#else
- /* With no strict defined, the verify is skipped */
-#define VERIFY_AND_SET_OID(bit) bit = 1;
-#endif
-
-static int DecodeCertExtensions(DecodedCert* cert)
-/*
- * Processing the Certificate Extensions. This does not modify the current
- * index. It is works starting with the recorded extensions pointer.
- */
-{
- int ret = 0;
- word32 idx = 0;
- int sz = cert->extensionsSz;
- byte* input = cert->extensions;
- int length;
- word32 oid;
- byte critical = 0;
- byte criticalFail = 0;
-
- WOLFSSL_ENTER("DecodeCertExtensions");
-
- if (input == NULL || sz == 0)
- return BAD_FUNC_ARG;
-
- if (input[idx++] != ASN_EXTENSIONS) {
- WOLFSSL_MSG("\tfail: should be an EXTENSIONS");
- return ASN_PARSE_E;
- }
-
- if (GetLength(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: invalid length");
- return ASN_PARSE_E;
- }
-
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE (1)");
- return ASN_PARSE_E;
- }
-
- while (idx < (word32)sz) {
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
-
- oid = 0;
- if ((ret = GetObjectId(input, &idx, &oid, oidCertExtType, sz)) < 0) {
- WOLFSSL_MSG("\tfail: OBJECT ID");
- return ret;
- }
-
- /* check for critical flag */
- critical = 0;
- if (input[idx] == ASN_BOOLEAN) {
- ret = GetBoolean(input, &idx, sz);
- if (ret < 0) {
- WOLFSSL_MSG("\tfail: critical boolean");
- return ret;
- }
-
- critical = (byte)ret;
- }
-
- /* process the extension based on the OID */
- ret = GetOctetString(input, &idx, &length, sz);
- if (ret < 0) {
- WOLFSSL_MSG("\tfail: bad OCTET STRING");
- return ret;
- }
-
- switch (oid) {
- case BASIC_CA_OID:
- VERIFY_AND_SET_OID(cert->extBasicConstSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extBasicConstCrit = critical;
- #endif
- if (DecodeBasicCaConstraint(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
-
- case CRL_DIST_OID:
- VERIFY_AND_SET_OID(cert->extCRLdistSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extCRLdistCrit = critical;
- #endif
- if (DecodeCrlDist(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
-
- case AUTH_INFO_OID:
- VERIFY_AND_SET_OID(cert->extAuthInfoSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extAuthInfoCrit = critical;
- #endif
- if (DecodeAuthInfo(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
-
- case ALT_NAMES_OID:
- VERIFY_AND_SET_OID(cert->extSubjAltNameSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extSubjAltNameCrit = critical;
- #endif
- ret = DecodeAltNames(&input[idx], length, cert);
- if (ret < 0)
- return ret;
- break;
-
- case AUTH_KEY_OID:
- VERIFY_AND_SET_OID(cert->extAuthKeyIdSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extAuthKeyIdCrit = critical;
- #endif
- #ifndef WOLFSSL_ALLOW_CRIT_SKID
- /* This check is added due to RFC 5280 section 4.2.1.1
- * stating that conforming CA's must mark this extension
- * as non-critical. When parsing extensions check that
- * certificate was made in compliance with this. */
- if (critical) {
- WOLFSSL_MSG("Critical Auth Key ID is not allowed");
- WOLFSSL_MSG("Use macro WOLFSSL_ALLOW_CRIT_SKID if wanted");
- return ASN_CRIT_EXT_E;
- }
- #endif
- if (DecodeAuthKeyId(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
-
- case SUBJ_KEY_OID:
- VERIFY_AND_SET_OID(cert->extSubjKeyIdSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extSubjKeyIdCrit = critical;
- #endif
- #ifndef WOLFSSL_ALLOW_CRIT_SKID
- /* This check is added due to RFC 5280 section 4.2.1.2
- * stating that conforming CA's must mark this extension
- * as non-critical. When parsing extensions check that
- * certificate was made in compliance with this. */
- if (critical) {
- WOLFSSL_MSG("Critical Subject Key ID is not allowed");
- WOLFSSL_MSG("Use macro WOLFSSL_ALLOW_CRIT_SKID if wanted");
- return ASN_CRIT_EXT_E;
- }
- #endif
-
- if (DecodeSubjKeyId(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
-
- case CERT_POLICY_OID:
- #ifdef WOLFSSL_SEP
- VERIFY_AND_SET_OID(cert->extCertPolicySet);
- #if defined(OPENSSL_EXTRA) || \
- defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extCertPolicyCrit = critical;
- #endif
- #endif
- #if defined(WOLFSSL_SEP) || defined(WOLFSSL_CERT_EXT)
- if (DecodeCertPolicy(&input[idx], length, cert) < 0) {
- return ASN_PARSE_E;
- }
- #else
- WOLFSSL_MSG("Certificate Policy extension not supported yet.");
- #endif
- break;
-
- case KEY_USAGE_OID:
- VERIFY_AND_SET_OID(cert->extKeyUsageSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extKeyUsageCrit = critical;
- #endif
- if (DecodeKeyUsage(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
-
- case EXT_KEY_USAGE_OID:
- VERIFY_AND_SET_OID(cert->extExtKeyUsageSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extExtKeyUsageCrit = critical;
- #endif
- if (DecodeExtKeyUsage(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
-
- #ifndef IGNORE_NAME_CONSTRAINTS
- case NAME_CONS_OID:
- #ifndef WOLFSSL_NO_ASN_STRICT
- /* Verify RFC 5280 Sec 4.2.1.10 rule:
- "The name constraints extension,
- which MUST be used only in a CA certificate" */
- if (!cert->isCA) {
- WOLFSSL_MSG("Name constraints allowed only for CA certs");
- return ASN_NAME_INVALID_E;
- }
- #endif
- VERIFY_AND_SET_OID(cert->extNameConstraintSet);
- #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
- cert->extNameConstraintCrit = critical;
- #endif
- if (DecodeNameConstraints(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- #endif /* IGNORE_NAME_CONSTRAINTS */
-
- case INHIBIT_ANY_OID:
- VERIFY_AND_SET_OID(cert->inhibitAnyOidSet);
- WOLFSSL_MSG("Inhibit anyPolicy extension not supported yet.");
- break;
-
- default:
- /* While it is a failure to not support critical extensions,
- * still parse the certificate ignoring the unsupported
- * extension to allow caller to accept it with the verify
- * callback. */
- if (critical)
- criticalFail = 1;
- break;
- }
- idx += length;
- }
-
- return criticalFail ? ASN_CRIT_EXT_E : 0;
-}
-
-int ParseCert(DecodedCert* cert, int type, int verify, void* cm)
-{
- int ret;
- char* ptr;
-
- ret = ParseCertRelative(cert, type, verify, cm);
- if (ret < 0)
- return ret;
-
- if (cert->subjectCNLen > 0) {
- ptr = (char*) XMALLOC(cert->subjectCNLen + 1, cert->heap,
- DYNAMIC_TYPE_SUBJECT_CN);
- if (ptr == NULL)
- return MEMORY_E;
- XMEMCPY(ptr, cert->subjectCN, cert->subjectCNLen);
- ptr[cert->subjectCNLen] = '\0';
- cert->subjectCN = ptr;
- cert->subjectCNStored = 1;
- }
-
- if (cert->keyOID == RSAk &&
- cert->publicKey != NULL && cert->pubKeySize > 0) {
- ptr = (char*) XMALLOC(cert->pubKeySize, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (ptr == NULL)
- return MEMORY_E;
- XMEMCPY(ptr, cert->publicKey, cert->pubKeySize);
- cert->publicKey = (byte *)ptr;
- cert->pubKeyStored = 1;
- }
-
- return ret;
-}
-
-/* from SSL proper, for locking can't do find here anymore */
-#ifdef __cplusplus
- extern "C" {
-#endif
- WOLFSSL_LOCAL Signer* GetCA(void* signers, byte* hash);
- #ifndef NO_SKID
- WOLFSSL_LOCAL Signer* GetCAByName(void* signers, byte* hash);
- #endif
-#ifdef __cplusplus
- }
-#endif
-
-
-#if defined(WOLFCRYPT_ONLY) || defined(NO_CERTS)
-
-/* dummy functions, not using wolfSSL so don't need actual ones */
-Signer* GetCA(void* signers, byte* hash)
-{
- (void)hash;
-
- return (Signer*)signers;
-}
-
-#ifndef NO_SKID
-Signer* GetCAByName(void* signers, byte* hash)
-{
- (void)hash;
-
- return (Signer*)signers;
-}
-#endif /* NO_SKID */
-
-#endif /* WOLFCRYPT_ONLY || NO_CERTS */
-
-#if (defined(WOLFSSL_ALT_CERT_CHAINS) || \
- defined(WOLFSSL_NO_TRUSTED_CERTS_VERIFY)) && !defined(NO_SKID)
-static Signer* GetCABySubjectAndPubKey(DecodedCert* cert, void* cm)
-{
- Signer* ca = NULL;
- if (cert->extSubjKeyIdSet)
- ca = GetCA(cm, cert->extSubjKeyId);
- if (ca == NULL)
- ca = GetCAByName(cm, cert->subjectHash);
- if (ca) {
- if ((ca->pubKeySize == cert->pubKeySize) &&
- (XMEMCMP(ca->publicKey, cert->publicKey, ca->pubKeySize) == 0)) {
- return ca;
- }
- }
- return NULL;
-}
-#endif
-
-int ParseCertRelative(DecodedCert* cert, int type, int verify, void* cm)
-{
- int ret = 0;
- int badDate = 0;
- int criticalExt = 0;
- word32 confirmOID;
- int selfSigned = 0;
-
- if (cert == NULL) {
- return BAD_FUNC_ARG;
- }
-
- if (cert->sigCtx.state == SIG_STATE_BEGIN) {
- if ((ret = DecodeToKey(cert, verify)) < 0) {
- if (ret == ASN_BEFORE_DATE_E || ret == ASN_AFTER_DATE_E)
- badDate = ret;
- else
- return ret;
- }
-
- WOLFSSL_MSG("Parsed Past Key");
-
- if (cert->srcIdx < cert->sigIndex) {
- #ifndef ALLOW_V1_EXTENSIONS
- if (cert->version < 2) {
- WOLFSSL_MSG("\tv1 and v2 certs not allowed extensions");
- return ASN_VERSION_E;
- }
- #endif
-
- /* save extensions */
- cert->extensions = &cert->source[cert->srcIdx];
- cert->extensionsSz = cert->sigIndex - cert->srcIdx;
- cert->extensionsIdx = cert->srcIdx; /* for potential later use */
-
- if ((ret = DecodeCertExtensions(cert)) < 0) {
- if (ret == ASN_CRIT_EXT_E)
- criticalExt = ret;
- else
- return ret;
- }
-
- /* advance past extensions */
- cert->srcIdx = cert->sigIndex;
- }
-
- if ((ret = GetAlgoId(cert->source, &cert->srcIdx, &confirmOID,
- oidSigType, cert->maxIdx)) < 0)
- return ret;
-
- if ((ret = GetSignature(cert)) < 0)
- return ret;
-
- if (confirmOID != cert->signatureOID)
- return ASN_SIG_OID_E;
-
- #ifndef NO_SKID
- if (cert->extSubjKeyIdSet == 0 && cert->publicKey != NULL &&
- cert->pubKeySize > 0) {
- #ifdef NO_SHA
- ret = wc_Sha256Hash(cert->publicKey, cert->pubKeySize,
- cert->extSubjKeyId);
- #else
- ret = wc_ShaHash(cert->publicKey, cert->pubKeySize,
- cert->extSubjKeyId);
- #endif /* NO_SHA */
- if (ret != 0)
- return ret;
- }
- #endif /* !NO_SKID */
-
- if (verify != NO_VERIFY && type != CA_TYPE && type != TRUSTED_PEER_TYPE) {
- cert->ca = NULL;
- #ifndef NO_SKID
- if (cert->extAuthKeyIdSet)
- cert->ca = GetCA(cm, cert->extAuthKeyId);
- if (cert->ca == NULL)
- cert->ca = GetCAByName(cm, cert->issuerHash);
-
- /* OCSP Only: alt lookup using subject and pub key w/o sig check */
- #ifdef WOLFSSL_NO_TRUSTED_CERTS_VERIFY
- if (cert->ca == NULL && verify == VERIFY_OCSP) {
- cert->ca = GetCABySubjectAndPubKey(cert, cm);
- if (cert->ca) {
- ret = 0; /* success */
- goto exit_pcr;
- }
- }
- #endif /* WOLFSSL_NO_TRUSTED_CERTS_VERIFY */
-
- /* alt lookup using subject and public key */
- #ifdef WOLFSSL_ALT_CERT_CHAINS
- if (cert->ca == NULL)
- cert->ca = GetCABySubjectAndPubKey(cert, cm);
- #endif
- #else
- cert->ca = GetCA(cm, cert->issuerHash);
- if (XMEMCMP(cert->issuerHash, cert->subjectHash, KEYID_SIZE) == 0)
- selfSigned = 1;
- #endif /* !NO_SKID */
-
- WOLFSSL_MSG("About to verify certificate signature");
- if (cert->ca) {
- if (cert->isCA && cert->ca->pathLengthSet) {
- if (selfSigned) {
- if (cert->ca->pathLength != 0) {
- WOLFSSL_MSG("Root CA with path length > 0");
- return ASN_PATHLEN_INV_E;
- }
- }
- else {
- if (cert->ca->pathLength == 0) {
- WOLFSSL_MSG("CA with path length 0 signing a CA");
- return ASN_PATHLEN_INV_E;
- }
- else if (cert->pathLength >= cert->ca->pathLength) {
-
- WOLFSSL_MSG("CA signing CA with longer path length");
- return ASN_PATHLEN_INV_E;
- }
- }
- }
-
- #ifdef HAVE_OCSP
- /* Need the CA's public key hash for OCSP */
- #ifdef NO_SHA
- ret = wc_Sha256Hash(cert->ca->publicKey, cert->ca->pubKeySize,
- cert->issuerKeyHash);
- #else
- ret = wc_ShaHash(cert->ca->publicKey, cert->ca->pubKeySize,
- cert->issuerKeyHash);
- #endif /* NO_SHA */
- if (ret != 0)
- return ret;
- #endif /* HAVE_OCSP */
- }
- }
- }
-
- if (verify != NO_VERIFY && type != CA_TYPE && type != TRUSTED_PEER_TYPE) {
- if (cert->ca) {
- if (verify == VERIFY || verify == VERIFY_OCSP) {
- /* try to confirm/verify signature */
- if ((ret = ConfirmSignature(&cert->sigCtx,
- cert->source + cert->certBegin,
- cert->sigIndex - cert->certBegin,
- cert->ca->publicKey, cert->ca->pubKeySize,
- cert->ca->keyOID, cert->signature,
- cert->sigLength, cert->signatureOID)) != 0) {
- if (ret != WC_PENDING_E) {
- WOLFSSL_MSG("Confirm signature failed");
- }
- return ret;
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- /* check that this cert's name is permitted by the signer's
- * name constraints */
- if (!ConfirmNameConstraints(cert->ca, cert)) {
- WOLFSSL_MSG("Confirm name constraint failed");
- return ASN_NAME_INVALID_E;
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- }
- }
- else {
- /* no signer */
- WOLFSSL_MSG("No CA signer to verify with");
- return ASN_NO_SIGNER_E;
- }
- }
-
-#if defined(WOLFSSL_NO_TRUSTED_CERTS_VERIFY) && !defined(NO_SKID)
-exit_pcr:
-#endif
-
- if (badDate != 0)
- return badDate;
-
- if (criticalExt != 0)
- return criticalExt;
-
- return ret;
-}
-
-/* Create and init an new signer */
-Signer* MakeSigner(void* heap)
-{
- Signer* signer = (Signer*) XMALLOC(sizeof(Signer), heap,
- DYNAMIC_TYPE_SIGNER);
- if (signer) {
- signer->pubKeySize = 0;
- signer->keyOID = 0;
- signer->publicKey = NULL;
- signer->nameLen = 0;
- signer->name = NULL;
- #ifndef IGNORE_NAME_CONSTRAINTS
- signer->permittedNames = NULL;
- signer->excludedNames = NULL;
- #endif /* IGNORE_NAME_CONSTRAINTS */
- signer->pathLengthSet = 0;
- signer->pathLength = 0;
- #ifdef WOLFSSL_SIGNER_DER_CERT
- signer->derCert = NULL;
- #endif
- signer->next = NULL;
- }
- (void)heap;
-
- return signer;
-}
-
-
-/* Free an individual signer */
-void FreeSigner(Signer* signer, void* heap)
-{
- XFREE(signer->name, heap, DYNAMIC_TYPE_SUBJECT_CN);
- XFREE(signer->publicKey, heap, DYNAMIC_TYPE_PUBLIC_KEY);
-#ifndef IGNORE_NAME_CONSTRAINTS
- if (signer->permittedNames)
- FreeNameSubtrees(signer->permittedNames, heap);
- if (signer->excludedNames)
- FreeNameSubtrees(signer->excludedNames, heap);
-#endif
-#ifdef WOLFSSL_SIGNER_DER_CERT
- FreeDer(&signer->derCert);
-#endif
- XFREE(signer, heap, DYNAMIC_TYPE_SIGNER);
-
- (void)heap;
-}
-
-
-/* Free the whole singer table with number of rows */
-void FreeSignerTable(Signer** table, int rows, void* heap)
-{
- int i;
-
- for (i = 0; i < rows; i++) {
- Signer* signer = table[i];
- while (signer) {
- Signer* next = signer->next;
- FreeSigner(signer, heap);
- signer = next;
- }
- table[i] = NULL;
- }
-}
-
-#ifdef WOLFSSL_TRUST_PEER_CERT
-/* Free an individual trusted peer cert */
-void FreeTrustedPeer(TrustedPeerCert* tp, void* heap)
-{
- if (tp == NULL) {
- return;
- }
-
- if (tp->name) {
- XFREE(tp->name, heap, DYNAMIC_TYPE_SUBJECT_CN);
- }
-
- if (tp->sig) {
- XFREE(tp->sig, heap, DYNAMIC_TYPE_SIGNATURE);
- }
-#ifndef IGNORE_NAME_CONSTRAINTS
- if (tp->permittedNames)
- FreeNameSubtrees(tp->permittedNames, heap);
- if (tp->excludedNames)
- FreeNameSubtrees(tp->excludedNames, heap);
-#endif
- XFREE(tp, heap, DYNAMIC_TYPE_CERT);
-
- (void)heap;
-}
-
-/* Free the whole Trusted Peer linked list */
-void FreeTrustedPeerTable(TrustedPeerCert** table, int rows, void* heap)
-{
- int i;
-
- for (i = 0; i < rows; i++) {
- TrustedPeerCert* tp = table[i];
- while (tp) {
- TrustedPeerCert* next = tp->next;
- FreeTrustedPeer(tp, heap);
- tp = next;
- }
- table[i] = NULL;
- }
-}
-#endif /* WOLFSSL_TRUST_PEER_CERT */
-
-WOLFSSL_LOCAL int SetMyVersion(word32 version, byte* output, int header)
-{
- int i = 0;
-
- if (output == NULL)
- return BAD_FUNC_ARG;
-
- if (header) {
- output[i++] = ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED;
- output[i++] = 3;
- }
- output[i++] = ASN_INTEGER;
- output[i++] = 0x01;
- output[i++] = (byte)version;
-
- return i;
-}
-
-
-WOLFSSL_LOCAL int SetSerialNumber(const byte* sn, word32 snSz, byte* output,
- int maxSnSz)
-{
- int i = 0;
- int snSzInt = (int)snSz;
-
- if (sn == NULL || output == NULL || snSzInt < 0)
- return BAD_FUNC_ARG;
-
- /* remove leading zeros */
- while (snSzInt > 0 && sn[0] == 0) {
- snSzInt--;
- sn++;
- }
-
- /* truncate if input is too long */
- if (snSzInt > maxSnSz)
- snSzInt = maxSnSz;
-
- /* encode ASN Integer, with length and value */
- output[i++] = ASN_INTEGER;
-
- /* handle MSB, to make sure value is positive */
- if (sn[0] & 0x80) {
- /* make room for zero pad */
- if (snSzInt > maxSnSz-1)
- snSzInt = maxSnSz-1;
-
- /* add zero pad */
- i += SetLength(snSzInt+1, &output[i]);
- output[i++] = 0x00;
- XMEMCPY(&output[i], sn, snSzInt);
- }
- else {
- i += SetLength(snSzInt, &output[i]);
- XMEMCPY(&output[i], sn, snSzInt);
- }
-
- /* compute final length */
- i += snSzInt;
-
- return i;
-}
-
-WOLFSSL_LOCAL int GetSerialNumber(const byte* input, word32* inOutIdx,
- byte* serial, int* serialSz, word32 maxIdx)
-{
- int result = 0;
- int ret;
-
- WOLFSSL_ENTER("GetSerialNumber");
-
- if (serial == NULL || input == NULL || serialSz == NULL) {
- return BAD_FUNC_ARG;
- }
-
- /* First byte is ASN type */
- if ((*inOutIdx+1) > maxIdx) {
- WOLFSSL_MSG("Bad idx first");
- return BUFFER_E;
- }
-
- ret = GetASNInt(input, inOutIdx, serialSz, maxIdx);
- if (ret != 0)
- return ret;
-
- if (*serialSz > EXTERNAL_SERIAL_SIZE) {
- WOLFSSL_MSG("Serial size bad");
- return ASN_PARSE_E;
- }
-
- /* return serial */
- XMEMCPY(serial, &input[*inOutIdx], *serialSz);
- *inOutIdx += *serialSz;
-
- return result;
-}
-
-
-int AllocDer(DerBuffer** pDer, word32 length, int type, void* heap)
-{
- int ret = BAD_FUNC_ARG;
- if (pDer) {
- int dynType = 0;
- DerBuffer* der;
-
- /* Determine dynamic type */
- switch (type) {
- case CA_TYPE: dynType = DYNAMIC_TYPE_CA; break;
- case CERT_TYPE: dynType = DYNAMIC_TYPE_CERT; break;
- case CRL_TYPE: dynType = DYNAMIC_TYPE_CRL; break;
- case DSA_TYPE: dynType = DYNAMIC_TYPE_DSA; break;
- case ECC_TYPE: dynType = DYNAMIC_TYPE_ECC; break;
- case RSA_TYPE: dynType = DYNAMIC_TYPE_RSA; break;
- default: dynType = DYNAMIC_TYPE_KEY; break;
- }
-
- /* Setup new buffer */
- *pDer = (DerBuffer*)XMALLOC(sizeof(DerBuffer) + length, heap, dynType);
- if (*pDer == NULL) {
- return MEMORY_E;
- }
- XMEMSET(*pDer, 0, sizeof(DerBuffer) + length);
-
- der = *pDer;
- der->type = type;
- der->dynType = dynType; /* Cache this for FreeDer */
- der->heap = heap;
- der->buffer = (byte*)der + sizeof(DerBuffer);
- der->length = length;
- ret = 0; /* Success */
- }
- return ret;
-}
-
-void FreeDer(DerBuffer** pDer)
-{
- if (pDer && *pDer)
- {
- DerBuffer* der = (DerBuffer*)*pDer;
-
- /* ForceZero private keys */
- if (der->type == PRIVATEKEY_TYPE) {
- ForceZero(der->buffer, der->length);
- }
- der->buffer = NULL;
- der->length = 0;
- XFREE(der, der->heap, der->dynType);
-
- *pDer = NULL;
- }
-}
-
-
-#if defined(WOLFSSL_PEM_TO_DER) || defined(WOLFSSL_DER_TO_PEM)
-
-/* Max X509 header length indicates the max length + 2 ('\n', '\0') */
-#define MAX_X509_HEADER_SZ (37 + 2)
-
-const char* const BEGIN_CERT = "-----BEGIN CERTIFICATE-----";
-const char* const END_CERT = "-----END CERTIFICATE-----";
-#ifdef WOLFSSL_CERT_REQ
- const char* const BEGIN_CERT_REQ = "-----BEGIN CERTIFICATE REQUEST-----";
- const char* const END_CERT_REQ = "-----END CERTIFICATE REQUEST-----";
-#endif
-#ifndef NO_DH
- const char* const BEGIN_DH_PARAM = "-----BEGIN DH PARAMETERS-----";
- const char* const END_DH_PARAM = "-----END DH PARAMETERS-----";
-#endif
-#ifndef NO_DSA
- const char* const BEGIN_DSA_PARAM = "-----BEGIN DSA PARAMETERS-----";
- const char* const END_DSA_PARAM = "-----END DSA PARAMETERS-----";
-#endif
-const char* const BEGIN_X509_CRL = "-----BEGIN X509 CRL-----";
-const char* const END_X509_CRL = "-----END X509 CRL-----";
-const char* const BEGIN_RSA_PRIV = "-----BEGIN RSA PRIVATE KEY-----";
-const char* const END_RSA_PRIV = "-----END RSA PRIVATE KEY-----";
-const char* const BEGIN_PRIV_KEY = "-----BEGIN PRIVATE KEY-----";
-const char* const END_PRIV_KEY = "-----END PRIVATE KEY-----";
-const char* const BEGIN_ENC_PRIV_KEY = "-----BEGIN ENCRYPTED PRIVATE KEY-----";
-const char* const END_ENC_PRIV_KEY = "-----END ENCRYPTED PRIVATE KEY-----";
-#ifdef HAVE_ECC
- const char* const BEGIN_EC_PRIV = "-----BEGIN EC PRIVATE KEY-----";
- const char* const END_EC_PRIV = "-----END EC PRIVATE KEY-----";
-#endif
-#if defined(HAVE_ECC) || defined(HAVE_ED25519) || !defined(NO_DSA)
- const char* const BEGIN_DSA_PRIV = "-----BEGIN DSA PRIVATE KEY-----";
- const char* const END_DSA_PRIV = "-----END DSA PRIVATE KEY-----";
-#endif
-const char* const BEGIN_PUB_KEY = "-----BEGIN PUBLIC KEY-----";
-const char* const END_PUB_KEY = "-----END PUBLIC KEY-----";
-#ifdef HAVE_ED25519
- const char* const BEGIN_EDDSA_PRIV = "-----BEGIN EDDSA PRIVATE KEY-----";
- const char* const END_EDDSA_PRIV = "-----END EDDSA PRIVATE KEY-----";
-#endif
-#ifdef HAVE_CRL
- const char *const BEGIN_CRL = "-----BEGIN X509 CRL-----";
- const char* const END_CRL = "-----END X509 CRL-----";
-#endif
-
-
-
-int wc_PemGetHeaderFooter(int type, const char** header, const char** footer)
-{
- int ret = BAD_FUNC_ARG;
-
- switch (type) {
- case CA_TYPE: /* same as below */
- case TRUSTED_PEER_TYPE:
- case CERT_TYPE:
- if (header) *header = BEGIN_CERT;
- if (footer) *footer = END_CERT;
- ret = 0;
- break;
-
- case CRL_TYPE:
- if (header) *header = BEGIN_X509_CRL;
- if (footer) *footer = END_X509_CRL;
- ret = 0;
- break;
- #ifndef NO_DH
- case DH_PARAM_TYPE:
- if (header) *header = BEGIN_DH_PARAM;
- if (footer) *footer = END_DH_PARAM;
- ret = 0;
- break;
- #endif
- #ifndef NO_DSA
- case DSA_PARAM_TYPE:
- if (header) *header = BEGIN_DSA_PARAM;
- if (footer) *footer = END_DSA_PARAM;
- ret = 0;
- break;
- #endif
- #ifdef WOLFSSL_CERT_REQ
- case CERTREQ_TYPE:
- if (header) *header = BEGIN_CERT_REQ;
- if (footer) *footer = END_CERT_REQ;
- ret = 0;
- break;
- #endif
- #ifndef NO_DSA
- case DSA_TYPE:
- case DSA_PRIVATEKEY_TYPE:
- if (header) *header = BEGIN_DSA_PRIV;
- if (footer) *footer = END_DSA_PRIV;
- ret = 0;
- break;
- #endif
- #ifdef HAVE_ECC
- case ECC_TYPE:
- case ECC_PRIVATEKEY_TYPE:
- if (header) *header = BEGIN_EC_PRIV;
- if (footer) *footer = END_EC_PRIV;
- ret = 0;
- break;
- #endif
- case RSA_TYPE:
- case PRIVATEKEY_TYPE:
- if (header) *header = BEGIN_RSA_PRIV;
- if (footer) *footer = END_RSA_PRIV;
- ret = 0;
- break;
- #ifdef HAVE_ED25519
- case ED25519_TYPE:
- case EDDSA_PRIVATEKEY_TYPE:
- if (header) *header = BEGIN_EDDSA_PRIV;
- if (footer) *footer = END_EDDSA_PRIV;
- ret = 0;
- break;
- #endif
- case PUBLICKEY_TYPE:
- if (header) *header = BEGIN_PUB_KEY;
- if (footer) *footer = END_PUB_KEY;
- ret = 0;
- break;
- default:
- break;
- }
- return ret;
-}
-
-#ifdef WOLFSSL_ENCRYPTED_KEYS
-
-static const char* const kProcTypeHeader = "Proc-Type";
-static const char* const kDecInfoHeader = "DEK-Info";
-
-#ifdef WOLFSSL_PEM_TO_DER
-#ifndef NO_DES3
- static const char* const kEncTypeDes = "DES-CBC";
- static const char* const kEncTypeDes3 = "DES-EDE3-CBC";
-#endif
-#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_128)
- static const char* const kEncTypeAesCbc128 = "AES-128-CBC";
-#endif
-#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_192)
- static const char* const kEncTypeAesCbc192 = "AES-192-CBC";
-#endif
-#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_256)
- static const char* const kEncTypeAesCbc256 = "AES-256-CBC";
-#endif
-
-int wc_EncryptedInfoGet(EncryptedInfo* info, const char* cipherInfo)
-{
- int ret = 0;
-
- if (info == NULL || cipherInfo == NULL)
- return BAD_FUNC_ARG;
-
- /* determine cipher information */
-#ifndef NO_DES3
- if (XSTRNCMP(cipherInfo, kEncTypeDes, XSTRLEN(kEncTypeDes)) == 0) {
- info->cipherType = WC_CIPHER_DES;
- info->keySz = DES_KEY_SIZE;
- if (info->ivSz == 0) info->ivSz = DES_IV_SIZE;
- }
- else if (XSTRNCMP(cipherInfo, kEncTypeDes3, XSTRLEN(kEncTypeDes3)) == 0) {
- info->cipherType = WC_CIPHER_DES3;
- info->keySz = DES3_KEY_SIZE;
- if (info->ivSz == 0) info->ivSz = DES_IV_SIZE;
- }
- else
-#endif /* !NO_DES3 */
-#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_128)
- if (XSTRNCMP(cipherInfo, kEncTypeAesCbc128, XSTRLEN(kEncTypeAesCbc128)) == 0) {
- info->cipherType = WC_CIPHER_AES_CBC;
- info->keySz = AES_128_KEY_SIZE;
- if (info->ivSz == 0) info->ivSz = AES_IV_SIZE;
- }
- else
-#endif
-#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_192)
- if (XSTRNCMP(cipherInfo, kEncTypeAesCbc192, XSTRLEN(kEncTypeAesCbc192)) == 0) {
- info->cipherType = WC_CIPHER_AES_CBC;
- info->keySz = AES_192_KEY_SIZE;
- if (info->ivSz == 0) info->ivSz = AES_IV_SIZE;
- }
- else
-#endif
-#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_256)
- if (XSTRNCMP(cipherInfo, kEncTypeAesCbc256, XSTRLEN(kEncTypeAesCbc256)) == 0) {
- info->cipherType = WC_CIPHER_AES_CBC;
- info->keySz = AES_256_KEY_SIZE;
- if (info->ivSz == 0) info->ivSz = AES_IV_SIZE;
- }
- else
-#endif
- {
- ret = NOT_COMPILED_IN;
- }
- return ret;
-}
-
-static int wc_EncryptedInfoParse(EncryptedInfo* info,
- char** pBuffer, size_t bufSz)
-{
- int err = 0;
- char* bufferStart;
- char* bufferEnd;
- char* line;
- word32 lineSz;
- char* finish;
- word32 finishSz;
- char* start = NULL;
- word32 startSz;
- char* newline = NULL;
-
- if (info == NULL || pBuffer == NULL || bufSz == 0)
- return BAD_FUNC_ARG;
-
- bufferStart = *pBuffer;
- bufferEnd = bufferStart + bufSz;
-
- /* find encrypted info marker */
- line = XSTRNSTR(bufferStart, kProcTypeHeader,
- min((word32)bufSz, PEM_LINE_LEN));
- if (line != NULL) {
- if (line >= bufferEnd) {
- return BUFFER_E;
- }
-
- lineSz = (word32)(bufferEnd - line);
-
- /* find DEC-Info marker */
- start = XSTRNSTR(line, kDecInfoHeader, min(lineSz, PEM_LINE_LEN));
-
- if (start == NULL)
- return BUFFER_E;
-
- /* skip dec-info and ": " */
- start += XSTRLEN(kDecInfoHeader);
- if (start >= bufferEnd)
- return BUFFER_E;
-
- if (start[0] == ':') {
- start++;
- if (start >= bufferEnd)
- return BUFFER_E;
- }
- if (start[0] == ' ')
- start++;
-
- startSz = (word32)(bufferEnd - start);
- finish = XSTRNSTR(start, ",", min(startSz, PEM_LINE_LEN));
-
- if ((start != NULL) && (finish != NULL) && (start < finish)) {
- if (finish >= bufferEnd) {
- return BUFFER_E;
- }
-
- finishSz = (word32)(bufferEnd - finish);
- newline = XSTRNSTR(finish, "\r", min(finishSz, PEM_LINE_LEN));
-
- /* get cipher name */
- if (NAME_SZ < (finish - start)) /* buffer size of info->name */
- return BUFFER_E;
- if (XMEMCPY(info->name, start, finish - start) == NULL)
- return BUFFER_E;
- info->name[finish - start] = '\0'; /* null term */
-
- /* get IV */
- if (finishSz < sizeof(info->iv) + 1)
- return BUFFER_E;
- if (XMEMCPY(info->iv, finish + 1, sizeof(info->iv)) == NULL)
- return BUFFER_E;
-
- if (newline == NULL)
- newline = XSTRNSTR(finish, "\n", min(finishSz,
- PEM_LINE_LEN));
- if ((newline != NULL) && (newline > finish)) {
- info->ivSz = (word32)(newline - (finish + 1));
- info->set = 1;
- }
- else
- return BUFFER_E;
- }
- else
- return BUFFER_E;
-
- /* eat blank line */
- while (newline < bufferEnd &&
- (*newline == '\r' || *newline == '\n')) {
- newline++;
- }
-
- /* return new headerEnd */
- if (pBuffer)
- *pBuffer = newline;
-
- /* populate info */
- err = wc_EncryptedInfoGet(info, info->name);
- }
-
- return err;
-}
-#endif /* WOLFSSL_PEM_TO_DER */
-
-#ifdef WOLFSSL_DER_TO_PEM
-static int wc_EncryptedInfoAppend(char* dest, char* cipherInfo)
-{
- if (cipherInfo != NULL) {
- size_t cipherInfoStrLen = XSTRLEN(cipherInfo);
- if (cipherInfoStrLen > HEADER_ENCRYPTED_KEY_SIZE - (9+14+10+3))
- cipherInfoStrLen = HEADER_ENCRYPTED_KEY_SIZE - (9+14+10+3);
-
- XSTRNCAT(dest, kProcTypeHeader, 9);
- XSTRNCAT(dest, ": 4,ENCRYPTED\n", 14);
- XSTRNCAT(dest, kDecInfoHeader, 8);
- XSTRNCAT(dest, ": ", 2);
- XSTRNCAT(dest, cipherInfo, cipherInfoStrLen);
- XSTRNCAT(dest, "\n\n", 3);
- }
- return 0;
-}
-#endif /* WOLFSSL_DER_TO_PEM */
-#endif /* WOLFSSL_ENCRYPTED_KEYS */
-
-#ifdef WOLFSSL_DER_TO_PEM
-
-/* Used for compatibility API */
-int wc_DerToPem(const byte* der, word32 derSz,
- byte* output, word32 outSz, int type)
-{
- return wc_DerToPemEx(der, derSz, output, outSz, NULL, type);
-}
-
-/* convert der buffer to pem into output, can't do inplace, der and output
- need to be different */
-int wc_DerToPemEx(const byte* der, word32 derSz, byte* output, word32 outSz,
- byte *cipher_info, int type)
-{
- const char* headerStr = NULL;
- const char* footerStr = NULL;
-#ifdef WOLFSSL_SMALL_STACK
- char* header = NULL;
- char* footer = NULL;
-#else
- char header[MAX_X509_HEADER_SZ + HEADER_ENCRYPTED_KEY_SIZE];
- char footer[MAX_X509_HEADER_SZ];
-#endif
- int headerLen = MAX_X509_HEADER_SZ + HEADER_ENCRYPTED_KEY_SIZE;
- int footerLen = MAX_X509_HEADER_SZ;
- int i;
- int err;
- int outLen; /* return length or error */
-
- (void)cipher_info;
-
- if (der == output) /* no in place conversion */
- return BAD_FUNC_ARG;
-
- err = wc_PemGetHeaderFooter(type, &headerStr, &footerStr);
- if (err != 0)
- return err;
-
-#ifdef WOLFSSL_SMALL_STACK
- header = (char*)XMALLOC(headerLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (header == NULL)
- return MEMORY_E;
-
- footer = (char*)XMALLOC(footerLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (footer == NULL) {
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#endif
-
- /* null term and leave room for newline */
- header[--headerLen] = '\0'; header[--headerLen] = '\0';
- footer[--footerLen] = '\0'; footer[--footerLen] = '\0';
-
- /* build header and footer based on type */
- XSTRNCPY(header, headerStr, headerLen);
- XSTRNCPY(footer, footerStr, footerLen);
-
- /* add new line to end */
- XSTRNCAT(header, "\n", 2);
- XSTRNCAT(footer, "\n", 2);
-
-#ifdef WOLFSSL_ENCRYPTED_KEYS
- err = wc_EncryptedInfoAppend(header, (char*)cipher_info);
- if (err != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return err;
- }
-#endif
-
- headerLen = (int)XSTRLEN(header);
- footerLen = (int)XSTRLEN(footer);
-
- /* if null output and 0 size passed in then return size needed */
- if (!output && outSz == 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- outLen = 0;
- if ((err = Base64_Encode(der, derSz, NULL, (word32*)&outLen))
- != LENGTH_ONLY_E) {
- return err;
- }
- return headerLen + footerLen + outLen;
- }
-
- if (!der || !output) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return BAD_FUNC_ARG;
- }
-
- /* don't even try if outSz too short */
- if (outSz < headerLen + footerLen + derSz) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return BAD_FUNC_ARG;
- }
-
- /* header */
- XMEMCPY(output, header, headerLen);
- i = headerLen;
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- /* body */
- outLen = outSz - (headerLen + footerLen); /* input to Base64_Encode */
- if ( (err = Base64_Encode(der, derSz, output + i, (word32*)&outLen)) < 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return err;
- }
- i += outLen;
-
- /* footer */
- if ( (i + footerLen) > (int)outSz) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return BAD_FUNC_ARG;
- }
- XMEMCPY(output + i, footer, footerLen);
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return outLen + headerLen + footerLen;
-}
-
-#endif /* WOLFSSL_DER_TO_PEM */
-
-#ifdef WOLFSSL_PEM_TO_DER
-
-/* Remove PEM header/footer, convert to ASN1, store any encrypted data
- info->consumed tracks of PEM bytes consumed in case multiple parts */
-int PemToDer(const unsigned char* buff, long longSz, int type,
- DerBuffer** pDer, void* heap, EncryptedInfo* info, int* eccKey)
-{
- const char* header = NULL;
- const char* footer = NULL;
- char* headerEnd;
- char* footerEnd;
- char* consumedEnd;
- char* bufferEnd = (char*)(buff + longSz);
- long neededSz;
- int ret = 0;
- int sz = (int)longSz;
- int encrypted_key = 0;
- DerBuffer* der;
-
- WOLFSSL_ENTER("PemToDer");
-
- /* get PEM header and footer based on type */
- ret = wc_PemGetHeaderFooter(type, &header, &footer);
- if (ret != 0)
- return ret;
-
- /* map header if not found for type */
- for (;;) {
- headerEnd = XSTRNSTR((char*)buff, header, sz);
-
- if (headerEnd || type != PRIVATEKEY_TYPE) {
- break;
- } else
- if (header == BEGIN_RSA_PRIV) {
- header = BEGIN_PRIV_KEY; footer = END_PRIV_KEY;
- } else
- if (header == BEGIN_PRIV_KEY) {
- header = BEGIN_ENC_PRIV_KEY; footer = END_ENC_PRIV_KEY;
- } else
-#ifdef HAVE_ECC
- if (header == BEGIN_ENC_PRIV_KEY) {
- header = BEGIN_EC_PRIV; footer = END_EC_PRIV;
- } else
- if (header == BEGIN_EC_PRIV) {
- header = BEGIN_DSA_PRIV; footer = END_DSA_PRIV;
- } else
-#endif
-#ifdef HAVE_ED25519
- #ifdef HAVE_ECC
- if (header == BEGIN_DSA_PRIV)
- #else
- if (header == BEGIN_ENC_PRIV_KEY)
- #endif
- {
- header = BEGIN_EDDSA_PRIV; footer = END_EDDSA_PRIV;
- } else
-#endif
-#ifdef HAVE_CRL
- if (type == CRL_TYPE) {
- header = BEGIN_CRL; footer = END_CRL;
- } else
-#endif
- {
- break;
- }
- }
-
- if (!headerEnd) {
- WOLFSSL_MSG("Couldn't find PEM header");
- return ASN_NO_PEM_HEADER;
- }
-
- headerEnd += XSTRLEN(header);
-
- if ((headerEnd + 1) >= bufferEnd)
- return BUFFER_E;
-
- /* eat end of line */
- if (headerEnd[0] == '\n')
- headerEnd++;
- else if (headerEnd[1] == '\n')
- headerEnd += 2;
- else {
- if (info)
- info->consumed = (long)(headerEnd+2 - (char*)buff);
- return BUFFER_E;
- }
-
- if (type == PRIVATEKEY_TYPE) {
- if (eccKey) {
- #ifdef HAVE_ECC
- *eccKey = (header == BEGIN_EC_PRIV) ? 1 : 0;
- #else
- *eccKey = 0;
- #endif
- }
- }
-
-#ifdef WOLFSSL_ENCRYPTED_KEYS
- if (info) {
- ret = wc_EncryptedInfoParse(info, &headerEnd, bufferEnd - headerEnd);
- if (ret < 0)
- return ret;
- if (info->set)
- encrypted_key = 1;
- }
-#endif /* WOLFSSL_ENCRYPTED_KEYS */
-
- /* find footer */
- footerEnd = XSTRNSTR((char*)buff, footer, sz);
- if (!footerEnd) {
- if (info)
- info->consumed = longSz; /* No more certs if no footer */
- return BUFFER_E;
- }
-
- consumedEnd = footerEnd + XSTRLEN(footer);
-
- if (consumedEnd < bufferEnd) { /* handle no end of line on last line */
- /* eat end of line */
- if (consumedEnd[0] == '\n')
- consumedEnd++;
- else if ((consumedEnd + 1 < bufferEnd) && consumedEnd[1] == '\n')
- consumedEnd += 2;
- else {
- if (info)
- info->consumed = (long)(consumedEnd+2 - (char*)buff);
- return BUFFER_E;
- }
- }
-
- if (info)
- info->consumed = (long)(consumedEnd - (char*)buff);
-
- /* set up der buffer */
- neededSz = (long)(footerEnd - headerEnd);
- if (neededSz > sz || neededSz <= 0)
- return BUFFER_E;
-
- ret = AllocDer(pDer, (word32)neededSz, type, heap);
- if (ret < 0) {
- return ret;
- }
- der = *pDer;
-
- if (Base64_Decode((byte*)headerEnd, (word32)neededSz,
- der->buffer, &der->length) < 0)
- return BUFFER_E;
-
- if (header == BEGIN_PRIV_KEY && !encrypted_key) {
- /* pkcs8 key, convert and adjust length */
- if ((ret = ToTraditional(der->buffer, der->length)) < 0)
- return ret;
-
- der->length = ret;
- return 0;
- }
-
-#ifdef WOLFSSL_ENCRYPTED_KEYS
- if (encrypted_key || header == BEGIN_ENC_PRIV_KEY) {
- int passwordSz = NAME_SZ;
- #ifdef WOLFSSL_SMALL_STACK
- char* password = NULL;
- #else
- char password[NAME_SZ];
- #endif
-
- if (!info || !info->passwd_cb) {
- WOLFSSL_MSG("No password callback set");
- return NO_PASSWORD;
- }
-
- #ifdef WOLFSSL_SMALL_STACK
- password = (char*)XMALLOC(passwordSz, heap, DYNAMIC_TYPE_STRING);
- if (password == NULL)
- return MEMORY_E;
- #endif
-
- /* get password */
- ret = info->passwd_cb(password, passwordSz, PEM_PASS_READ,
- info->passwd_userdata);
- if (ret >= 0) {
- passwordSz = ret;
-
- /* convert and adjust length */
- if (header == BEGIN_ENC_PRIV_KEY) {
- #ifndef NO_PWDBASED
- ret = ToTraditionalEnc(der->buffer, der->length,
- password, passwordSz);
-
- if (ret >= 0) {
- der->length = ret;
- }
- #else
- ret = NOT_COMPILED_IN;
- #endif
- }
- /* decrypt the key */
- else {
- ret = wc_BufferKeyDecrypt(info, der->buffer, der->length,
- (byte*)password, passwordSz, WC_MD5);
- }
- ForceZero(password, passwordSz);
- }
-
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(password, heap, DYNAMIC_TYPE_STRING);
- #endif
- }
-#endif /* WOLFSSL_ENCRYPTED_KEYS */
-
- return ret;
-}
-
-int wc_PemToDer(const unsigned char* buff, long longSz, int type,
- DerBuffer** pDer, void* heap, EncryptedInfo* info, int* eccKey)
-{
- return PemToDer(buff, longSz, type, pDer, heap, info, eccKey);
-}
-
-
-/* our KeyPemToDer password callback, password in userData */
-static WC_INLINE int OurPasswordCb(char* passwd, int sz, int rw, void* userdata)
-{
- (void)rw;
-
- if (userdata == NULL)
- return 0;
-
- XSTRNCPY(passwd, (char*)userdata, sz);
- return min((word32)sz, (word32)XSTRLEN((char*)userdata));
-}
-
-/* Return bytes written to buff or < 0 for error */
-int wc_KeyPemToDer(const unsigned char* pem, int pemSz,
- unsigned char* buff, int buffSz, const char* pass)
-{
- int eccKey = 0;
- int ret;
- DerBuffer* der = NULL;
-#ifdef WOLFSSL_SMALL_STACK
- EncryptedInfo* info = NULL;
-#else
- EncryptedInfo info[1];
-#endif
-
- WOLFSSL_ENTER("wc_KeyPemToDer");
-
- if (pem == NULL || buff == NULL || buffSz <= 0) {
- WOLFSSL_MSG("Bad pem der args");
- return BAD_FUNC_ARG;
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- info = (EncryptedInfo*)XMALLOC(sizeof(EncryptedInfo), NULL,
- DYNAMIC_TYPE_ENCRYPTEDINFO);
- if (info == NULL)
- return MEMORY_E;
-#endif
-
- XMEMSET(info, 0, sizeof(EncryptedInfo));
- info->passwd_cb = OurPasswordCb;
- info->passwd_userdata = (void*)pass;
-
- ret = PemToDer(pem, pemSz, PRIVATEKEY_TYPE, &der, NULL, info, &eccKey);
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(info, NULL, DYNAMIC_TYPE_ENCRYPTEDINFO);
-#endif
-
- if (ret < 0) {
- WOLFSSL_MSG("Bad Pem To Der");
- }
- else {
- if (der->length <= (word32)buffSz) {
- XMEMCPY(buff, der->buffer, der->length);
- ret = der->length;
- }
- else {
- WOLFSSL_MSG("Bad der length");
- ret = BAD_FUNC_ARG;
- }
- }
-
- FreeDer(&der);
- return ret;
-}
-
-
-/* Return bytes written to buff or < 0 for error */
-int wc_CertPemToDer(const unsigned char* pem, int pemSz,
- unsigned char* buff, int buffSz, int type)
-{
- int eccKey = 0;
- int ret;
- DerBuffer* der = NULL;
-
- WOLFSSL_ENTER("wc_CertPemToDer");
-
- if (pem == NULL || buff == NULL || buffSz <= 0) {
- WOLFSSL_MSG("Bad pem der args");
- return BAD_FUNC_ARG;
- }
-
- if (type != CERT_TYPE && type != CA_TYPE && type != CERTREQ_TYPE) {
- WOLFSSL_MSG("Bad cert type");
- return BAD_FUNC_ARG;
- }
-
-
- ret = PemToDer(pem, pemSz, type, &der, NULL, NULL, &eccKey);
- if (ret < 0) {
- WOLFSSL_MSG("Bad Pem To Der");
- }
- else {
- if (der->length <= (word32)buffSz) {
- XMEMCPY(buff, der->buffer, der->length);
- ret = der->length;
- }
- else {
- WOLFSSL_MSG("Bad der length");
- ret = BAD_FUNC_ARG;
- }
- }
-
- FreeDer(&der);
- return ret;
-}
-
-#endif /* WOLFSSL_PEM_TO_DER */
-#endif /* WOLFSSL_PEM_TO_DER || WOLFSSL_DER_TO_PEM */
-
-
-#ifdef WOLFSSL_PEM_TO_DER
-#if defined(WOLFSSL_CERT_EXT) || defined(WOLFSSL_PUB_PEM_TO_DER)
-/* Return bytes written to buff or < 0 for error */
-int wc_PubKeyPemToDer(const unsigned char* pem, int pemSz,
- unsigned char* buff, int buffSz)
-{
- int ret;
- DerBuffer* der = NULL;
-
- WOLFSSL_ENTER("wc_PubKeyPemToDer");
-
- if (pem == NULL || buff == NULL || buffSz <= 0) {
- WOLFSSL_MSG("Bad pem der args");
- return BAD_FUNC_ARG;
- }
-
- ret = PemToDer(pem, pemSz, PUBLICKEY_TYPE, &der, NULL, NULL, NULL);
- if (ret < 0) {
- WOLFSSL_MSG("Bad Pem To Der");
- }
- else {
- if (der->length <= (word32)buffSz) {
- XMEMCPY(buff, der->buffer, der->length);
- ret = der->length;
- }
- else {
- WOLFSSL_MSG("Bad der length");
- ret = BAD_FUNC_ARG;
- }
- }
-
- FreeDer(&der);
- return ret;
-}
-#endif /* WOLFSSL_CERT_EXT || WOLFSSL_PUB_PEM_TO_DER */
-#endif /* WOLFSSL_PEM_TO_DER */
-
-#ifndef NO_FILESYSTEM
-
-#ifdef WOLFSSL_CERT_GEN
-/* load pem cert from file into der buffer, return der size or error */
-int wc_PemCertToDer(const char* fileName, unsigned char* derBuf, int derSz)
-{
-#ifdef WOLFSSL_SMALL_STACK
- byte staticBuffer[1]; /* force XMALLOC */
-#else
- byte staticBuffer[FILE_BUFFER_SIZE];
-#endif
- byte* fileBuf = staticBuffer;
- int dynamic = 0;
- int ret = 0;
- long sz = 0;
- XFILE file = XFOPEN(fileName, "rb");
- DerBuffer* converted = NULL;
-
- WOLFSSL_ENTER("wc_PemCertToDer");
-
- if (file == XBADFILE) {
- ret = BUFFER_E;
- }
- else {
- XFSEEK(file, 0, XSEEK_END);
- sz = XFTELL(file);
- XREWIND(file);
-
- if (sz <= 0) {
- ret = BUFFER_E;
- }
- else if (sz > (long)sizeof(staticBuffer)) {
- #ifdef WOLFSSL_STATIC_MEMORY
- WOLFSSL_MSG("File was larger then static buffer");
- return MEMORY_E;
- #endif
- fileBuf = (byte*)XMALLOC(sz, NULL, DYNAMIC_TYPE_FILE);
- if (fileBuf == NULL)
- ret = MEMORY_E;
- else
- dynamic = 1;
- }
-
- if (ret == 0) {
- if ( (ret = (int)XFREAD(fileBuf, 1, sz, file)) != sz) {
- ret = BUFFER_E;
- }
- #ifdef WOLFSSL_PEM_TO_DER
- else {
- ret = PemToDer(fileBuf, sz, CA_TYPE, &converted, 0, NULL,NULL);
- }
- #endif
-
- if (ret == 0) {
- if (converted->length < (word32)derSz) {
- XMEMCPY(derBuf, converted->buffer, converted->length);
- ret = converted->length;
- }
- else
- ret = BUFFER_E;
- }
-
- FreeDer(&converted);
- }
-
- XFCLOSE(file);
- if (dynamic)
- XFREE(fileBuf, NULL, DYNAMIC_TYPE_FILE);
- }
-
- return ret;
-}
-#endif /* WOLFSSL_CERT_GEN */
-
-#if defined(WOLFSSL_CERT_EXT) || defined(WOLFSSL_PUB_PEM_TO_DER)
-/* load pem public key from file into der buffer, return der size or error */
-int wc_PemPubKeyToDer(const char* fileName,
- unsigned char* derBuf, int derSz)
-{
-#ifdef WOLFSSL_SMALL_STACK
- byte staticBuffer[1]; /* force XMALLOC */
-#else
- byte staticBuffer[FILE_BUFFER_SIZE];
-#endif
- byte* fileBuf = staticBuffer;
- int dynamic = 0;
- int ret = 0;
- long sz = 0;
- XFILE file = XFOPEN(fileName, "rb");
- DerBuffer* converted = NULL;
-
- WOLFSSL_ENTER("wc_PemPubKeyToDer");
-
- if (file == XBADFILE) {
- ret = BUFFER_E;
- }
- else {
- XFSEEK(file, 0, XSEEK_END);
- sz = XFTELL(file);
- XREWIND(file);
-
- if (sz <= 0) {
- ret = BUFFER_E;
- }
- else if (sz > (long)sizeof(staticBuffer)) {
- #ifdef WOLFSSL_STATIC_MEMORY
- WOLFSSL_MSG("File was larger then static buffer");
- return MEMORY_E;
- #endif
- fileBuf = (byte*)XMALLOC(sz, NULL, DYNAMIC_TYPE_FILE);
- if (fileBuf == NULL)
- ret = MEMORY_E;
- else
- dynamic = 1;
- }
- if (ret == 0) {
- if ( (ret = (int)XFREAD(fileBuf, 1, sz, file)) != sz) {
- ret = BUFFER_E;
- }
- #ifdef WOLFSSL_PEM_TO_DER
- else {
- ret = PemToDer(fileBuf, sz, PUBLICKEY_TYPE, &converted,
- 0, NULL, NULL);
- }
- #endif
-
- if (ret == 0) {
- if (converted->length < (word32)derSz) {
- XMEMCPY(derBuf, converted->buffer, converted->length);
- ret = converted->length;
- }
- else
- ret = BUFFER_E;
- }
-
- FreeDer(&converted);
- }
-
- XFCLOSE(file);
- if (dynamic)
- XFREE(fileBuf, NULL, DYNAMIC_TYPE_FILE);
- }
-
- return ret;
-}
-#endif /* WOLFSSL_CERT_EXT || WOLFSSL_PUB_PEM_TO_DER */
-
-#endif /* !NO_FILESYSTEM */
-
-
-#if !defined(NO_RSA) && (defined(WOLFSSL_CERT_GEN) || \
- ((defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(HAVE_USER_RSA)))
-/* USER RSA ifdef portions used instead of refactor in consideration for
- possible fips build */
-/* Write a public RSA key to output */
-static int SetRsaPublicKey(byte* output, RsaKey* key,
- int outLen, int with_header)
-{
-#ifdef WOLFSSL_SMALL_STACK
- byte* n = NULL;
- byte* e = NULL;
-#else
- byte n[MAX_RSA_INT_SZ];
- byte e[MAX_RSA_E_SZ];
-#endif
- byte seq[MAX_SEQ_SZ];
- byte bitString[1 + MAX_LENGTH_SZ + 1];
- int nSz;
- int eSz;
- int seqSz;
- int bitStringSz;
- int idx;
-
- if (output == NULL || key == NULL || outLen < MAX_SEQ_SZ)
- return BAD_FUNC_ARG;
-
- /* n */
-#ifdef WOLFSSL_SMALL_STACK
- n = (byte*)XMALLOC(MAX_RSA_INT_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (n == NULL)
- return MEMORY_E;
-#endif
-
-#ifdef HAVE_USER_RSA
- nSz = SetASNIntRSA(key->n, n);
-#else
- nSz = SetASNIntMP(&key->n, MAX_RSA_INT_SZ, n);
-#endif
- if (nSz < 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return nSz;
- }
-
- /* e */
-#ifdef WOLFSSL_SMALL_STACK
- e = (byte*)XMALLOC(MAX_RSA_E_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (e == NULL) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return MEMORY_E;
- }
-#endif
-
-#ifdef HAVE_USER_RSA
- eSz = SetASNIntRSA(key->e, e);
-#else
- eSz = SetASNIntMP(&key->e, MAX_RSA_INT_SZ, e);
-#endif
- if (eSz < 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return eSz;
- }
-
- seqSz = SetSequence(nSz + eSz, seq);
-
- /* check output size */
- if ( (seqSz + nSz + eSz) > outLen) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return BUFFER_E;
- }
-
- /* headers */
- if (with_header) {
- int algoSz;
-#ifdef WOLFSSL_SMALL_STACK
- byte* algo = NULL;
-
- algo = (byte*)XMALLOC(MAX_ALGO_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (algo == NULL) {
- XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#else
- byte algo[MAX_ALGO_SZ];
-#endif
- algoSz = SetAlgoID(RSAk, algo, oidKeyType, 0);
- bitStringSz = SetBitString(seqSz + nSz + eSz, 0, bitString);
-
- idx = SetSequence(nSz + eSz + seqSz + bitStringSz + algoSz, output);
-
- /* check output size */
- if ( (idx + algoSz + bitStringSz + seqSz + nSz + eSz) > outLen) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(algo, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
-
- return BUFFER_E;
- }
-
- /* algo */
- XMEMCPY(output + idx, algo, algoSz);
- idx += algoSz;
- /* bit string */
- XMEMCPY(output + idx, bitString, bitStringSz);
- idx += bitStringSz;
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(algo, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- }
- else
- idx = 0;
-
- /* seq */
- XMEMCPY(output + idx, seq, seqSz);
- idx += seqSz;
- /* n */
- XMEMCPY(output + idx, n, nSz);
- idx += nSz;
- /* e */
- XMEMCPY(output + idx, e, eSz);
- idx += eSz;
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return idx;
-}
-
-int RsaPublicKeyDerSize(RsaKey* key, int with_header)
-{
- byte* dummy = NULL;
- byte seq[MAX_SEQ_SZ];
- byte bitString[1 + MAX_LENGTH_SZ + 1];
- int nSz;
- int eSz;
- int seqSz;
- int bitStringSz;
- int idx;
-
- if (key == NULL)
- return BAD_FUNC_ARG;
-
- /* n */
- dummy = (byte*)XMALLOC(MAX_RSA_INT_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (dummy == NULL)
- return MEMORY_E;
-
-#ifdef HAVE_USER_RSA
- nSz = SetASNIntRSA(key->n, dummy);
-#else
- nSz = SetASNIntMP(&key->n, MAX_RSA_INT_SZ, dummy);
-#endif
- XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (nSz < 0) {
- return nSz;
- }
-
- /* e */
- dummy = (byte*)XMALLOC(MAX_RSA_E_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (dummy == NULL) {
- XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-
-#ifdef HAVE_USER_RSA
- eSz = SetASNIntRSA(key->e, dummy);
-#else
- eSz = SetASNIntMP(&key->e, MAX_RSA_INT_SZ, dummy);
-#endif
- XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (eSz < 0) {
- return eSz;
- }
-
- seqSz = SetSequence(nSz + eSz, seq);
-
- /* headers */
- if (with_header) {
- int algoSz;
- dummy = (byte*)XMALLOC(MAX_RSA_INT_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (dummy == NULL)
- return MEMORY_E;
-
- algoSz = SetAlgoID(RSAk, dummy, oidKeyType, 0);
- bitStringSz = SetBitString(seqSz + nSz + eSz, 0, bitString);
-
- idx = SetSequence(nSz + eSz + seqSz + bitStringSz + algoSz, dummy);
- XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-
- /* algo */
- idx += algoSz;
- /* bit string */
- idx += bitStringSz;
- }
- else
- idx = 0;
-
- /* seq */
- idx += seqSz;
- /* n */
- idx += nSz;
- /* e */
- idx += eSz;
-
- return idx;
-}
-#endif /* !NO_RSA && (WOLFSSL_CERT_GEN || (WOLFSSL_KEY_GEN &&
- !HAVE_USER_RSA))) */
-
-
-#if defined(WOLFSSL_KEY_GEN) && !defined(NO_RSA) && !defined(HAVE_USER_RSA)
-
-
-static mp_int* GetRsaInt(RsaKey* key, int idx)
-{
- if (idx == 0)
- return &key->n;
- if (idx == 1)
- return &key->e;
- if (idx == 2)
- return &key->d;
- if (idx == 3)
- return &key->p;
- if (idx == 4)
- return &key->q;
- if (idx == 5)
- return &key->dP;
- if (idx == 6)
- return &key->dQ;
- if (idx == 7)
- return &key->u;
-
- return NULL;
-}
-
-
-/* Release Tmp RSA resources */
-static WC_INLINE void FreeTmpRsas(byte** tmps, void* heap)
-{
- int i;
-
- (void)heap;
-
- for (i = 0; i < RSA_INTS; i++)
- XFREE(tmps[i], heap, DYNAMIC_TYPE_RSA);
-}
-
-
-/* Convert RsaKey key to DER format, write to output (inLen), return bytes
- written */
-int wc_RsaKeyToDer(RsaKey* key, byte* output, word32 inLen)
-{
- word32 seqSz, verSz, rawLen, intTotalLen = 0;
- word32 sizes[RSA_INTS];
- int i, j, outLen, ret = 0, mpSz;
-
- byte seq[MAX_SEQ_SZ];
- byte ver[MAX_VERSION_SZ];
- byte* tmps[RSA_INTS];
-
- if (!key || !output)
- return BAD_FUNC_ARG;
-
- if (key->type != RSA_PRIVATE)
- return BAD_FUNC_ARG;
-
- for (i = 0; i < RSA_INTS; i++)
- tmps[i] = NULL;
-
- /* write all big ints from key to DER tmps */
- for (i = 0; i < RSA_INTS; i++) {
- mp_int* keyInt = GetRsaInt(key, i);
-
- rawLen = mp_unsigned_bin_size(keyInt) + 1;
- tmps[i] = (byte*)XMALLOC(rawLen + MAX_SEQ_SZ, key->heap,
- DYNAMIC_TYPE_RSA);
- if (tmps[i] == NULL) {
- ret = MEMORY_E;
- break;
- }
-
- mpSz = SetASNIntMP(keyInt, MAX_RSA_INT_SZ, tmps[i]);
- if (mpSz < 0) {
- ret = mpSz;
- break;
- }
- intTotalLen += (sizes[i] = mpSz);
- }
-
- if (ret != 0) {
- FreeTmpRsas(tmps, key->heap);
- return ret;
- }
-
- /* make headers */
- verSz = SetMyVersion(0, ver, FALSE);
- seqSz = SetSequence(verSz + intTotalLen, seq);
-
- outLen = seqSz + verSz + intTotalLen;
- if (outLen > (int)inLen) {
- FreeTmpRsas(tmps, key->heap);
- return BAD_FUNC_ARG;
- }
-
- /* write to output */
- XMEMCPY(output, seq, seqSz);
- j = seqSz;
- XMEMCPY(output + j, ver, verSz);
- j += verSz;
-
- for (i = 0; i < RSA_INTS; i++) {
- XMEMCPY(output + j, tmps[i], sizes[i]);
- j += sizes[i];
- }
- FreeTmpRsas(tmps, key->heap);
-
- return outLen;
-}
-#endif
-
-#if (defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(NO_RSA) && !defined(HAVE_USER_RSA)
-/* Convert Rsa Public key to DER format, write to output (inLen), return bytes
- written */
-int wc_RsaKeyToPublicDer(RsaKey* key, byte* output, word32 inLen)
-{
- return SetRsaPublicKey(output, key, inLen, 1);
-}
-
-#endif /* WOLFSSL_KEY_GEN && !NO_RSA && !HAVE_USER_RSA */
-
-
-#ifdef WOLFSSL_CERT_GEN
-
-/* Initialize and Set Certificate defaults:
- version = 3 (0x2)
- serial = 0
- sigType = SHA_WITH_RSA
- issuer = blank
- daysValid = 500
- selfSigned = 1 (true) use subject as issuer
- subject = blank
-*/
-int wc_InitCert(Cert* cert)
-{
-#ifdef WOLFSSL_MULTI_ATTRIB
- int i = 0;
-#endif
- if (cert == NULL) {
- return BAD_FUNC_ARG;
- }
-
- XMEMSET(cert, 0, sizeof(Cert));
-
- cert->version = 2; /* version 3 is hex 2 */
-#ifndef NO_SHA
- cert->sigType = CTC_SHAwRSA;
-#elif !defined(NO_SHA256)
- cert->sigType = CTC_SHA256wRSA;
-#else
- cert->sigType = 0;
-#endif
- cert->daysValid = 500;
- cert->selfSigned = 1;
- cert->keyType = RSA_KEY;
-
- cert->issuer.countryEnc = CTC_PRINTABLE;
- cert->issuer.stateEnc = CTC_UTF8;
- cert->issuer.localityEnc = CTC_UTF8;
- cert->issuer.surEnc = CTC_UTF8;
- cert->issuer.orgEnc = CTC_UTF8;
- cert->issuer.unitEnc = CTC_UTF8;
- cert->issuer.commonNameEnc = CTC_UTF8;
-
- cert->subject.countryEnc = CTC_PRINTABLE;
- cert->subject.stateEnc = CTC_UTF8;
- cert->subject.localityEnc = CTC_UTF8;
- cert->subject.surEnc = CTC_UTF8;
- cert->subject.orgEnc = CTC_UTF8;
- cert->subject.unitEnc = CTC_UTF8;
- cert->subject.commonNameEnc = CTC_UTF8;
-
-#ifdef WOLFSSL_MULTI_ATTRIB
- for (i = 0; i < CTC_MAX_ATTRIB; i++) {
- cert->issuer.name[i].type = CTC_UTF8;
- cert->subject.name[i].type = CTC_UTF8;
- }
-#endif /* WOLFSSL_MULTI_ATTRIB */
-
-#ifdef WOLFSSL_HEAP_TEST
- cert->heap = (void*)WOLFSSL_HEAP_TEST;
-#endif
-
- return 0;
-}
-
-
-/* DER encoded x509 Certificate */
-typedef struct DerCert {
- byte size[MAX_LENGTH_SZ]; /* length encoded */
- byte version[MAX_VERSION_SZ]; /* version encoded */
- byte serial[(int)CTC_SERIAL_SIZE + (int)MAX_LENGTH_SZ]; /* serial number encoded */
- byte sigAlgo[MAX_ALGO_SZ]; /* signature algo encoded */
- byte issuer[ASN_NAME_MAX]; /* issuer encoded */
- byte subject[ASN_NAME_MAX]; /* subject encoded */
- byte validity[MAX_DATE_SIZE*2 + MAX_SEQ_SZ*2]; /* before and after dates */
- byte publicKey[MAX_PUBLIC_KEY_SZ]; /* rsa / ntru public key encoded */
- byte ca[MAX_CA_SZ]; /* basic constraint CA true size */
- byte extensions[MAX_EXTENSIONS_SZ]; /* all extensions */
-#ifdef WOLFSSL_CERT_EXT
- byte skid[MAX_KID_SZ]; /* Subject Key Identifier extension */
- byte akid[MAX_KID_SZ]; /* Authority Key Identifier extension */
- byte keyUsage[MAX_KEYUSAGE_SZ]; /* Key Usage extension */
- byte extKeyUsage[MAX_EXTKEYUSAGE_SZ]; /* Extended Key Usage extension */
- byte certPolicies[MAX_CERTPOL_NB*MAX_CERTPOL_SZ]; /* Certificate Policies */
-#endif
-#ifdef WOLFSSL_CERT_REQ
- byte attrib[MAX_ATTRIB_SZ]; /* Cert req attributes encoded */
-#endif
-#ifdef WOLFSSL_ALT_NAMES
- byte altNames[CTC_MAX_ALT_SIZE]; /* Alternative Names encoded */
-#endif
- int sizeSz; /* encoded size length */
- int versionSz; /* encoded version length */
- int serialSz; /* encoded serial length */
- int sigAlgoSz; /* encoded sig alog length */
- int issuerSz; /* encoded issuer length */
- int subjectSz; /* encoded subject length */
- int validitySz; /* encoded validity length */
- int publicKeySz; /* encoded public key length */
- int caSz; /* encoded CA extension length */
-#ifdef WOLFSSL_CERT_EXT
- int skidSz; /* encoded SKID extension length */
- int akidSz; /* encoded SKID extension length */
- int keyUsageSz; /* encoded KeyUsage extension length */
- int extKeyUsageSz; /* encoded ExtendedKeyUsage extension length */
- int certPoliciesSz; /* encoded CertPolicies extension length*/
-#endif
-#ifdef WOLFSSL_ALT_NAMES
- int altNamesSz; /* encoded AltNames extension length */
-#endif
- int extensionsSz; /* encoded extensions total length */
- int total; /* total encoded lengths */
-#ifdef WOLFSSL_CERT_REQ
- int attribSz;
-#endif
-} DerCert;
-
-
-#ifdef WOLFSSL_CERT_REQ
-
-/* Write a set header to output */
-static word32 SetUTF8String(word32 len, byte* output)
-{
- output[0] = ASN_UTF8STRING;
- return SetLength(len, output + 1) + 1;
-}
-
-#endif /* WOLFSSL_CERT_REQ */
-
-#endif /*WOLFSSL_CERT_GEN */
-
-#if defined(HAVE_ECC)
-
-/* Write a public ECC key to output */
-static int SetEccPublicKey(byte* output, ecc_key* key, int with_header)
-{
- byte bitString[1 + MAX_LENGTH_SZ + 1];
- int algoSz;
- int curveSz;
- int bitStringSz;
- int idx;
- word32 pubSz = ECC_BUFSIZE;
-#ifdef WOLFSSL_SMALL_STACK
- byte* algo = NULL;
- byte* curve = NULL;
- byte* pub = NULL;
-#else
- byte algo[MAX_ALGO_SZ];
- byte curve[MAX_ALGO_SZ];
- byte pub[ECC_BUFSIZE];
-#endif
- int ret;
-
-#ifdef WOLFSSL_SMALL_STACK
- pub = (byte*)XMALLOC(ECC_BUFSIZE, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL)
- return MEMORY_E;
-#endif
-
- ret = wc_ecc_export_x963(key, pub, &pubSz);
- if (ret != 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return ret;
- }
-
- /* headers */
- if (with_header) {
-#ifdef WOLFSSL_SMALL_STACK
- curve = (byte*)XMALLOC(MAX_ALGO_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (curve == NULL) {
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#endif
- curveSz = SetCurve(key, curve);
- if (curveSz <= 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(curve, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return curveSz;
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- algo = (byte*)XMALLOC(MAX_ALGO_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (algo == NULL) {
- XFREE(curve, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#endif
- algoSz = SetAlgoID(ECDSAk, algo, oidKeyType, curveSz);
-
- bitStringSz = SetBitString(pubSz, 0, bitString);
-
- idx = SetSequence(pubSz + curveSz + bitStringSz + algoSz, output);
- /* algo */
- XMEMCPY(output + idx, algo, algoSz);
- idx += algoSz;
- /* curve */
- XMEMCPY(output + idx, curve, curveSz);
- idx += curveSz;
- /* bit string */
- XMEMCPY(output + idx, bitString, bitStringSz);
- idx += bitStringSz;
- }
- else
- idx = 0;
-
- /* pub */
- XMEMCPY(output + idx, pub, pubSz);
- idx += pubSz;
-
-#ifdef WOLFSSL_SMALL_STACK
- if (with_header) {
- XFREE(algo, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(curve, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- }
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return idx;
-}
-
-
-/* returns the size of buffer used, the public ECC key in DER format is stored
- in output buffer
- with_AlgCurve is a flag for when to include a header that has the Algorithm
- and Curve infromation */
-int wc_EccPublicKeyToDer(ecc_key* key, byte* output, word32 inLen,
- int with_AlgCurve)
-{
- word32 infoSz = 0;
- word32 keySz = 0;
- int ret;
-
- if (output == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
-
- if (with_AlgCurve) {
- /* buffer space for algorithm/curve */
- infoSz += MAX_SEQ_SZ;
- infoSz += 2 * MAX_ALGO_SZ;
-
- /* buffer space for public key sequence */
- infoSz += MAX_SEQ_SZ;
- infoSz += TRAILING_ZERO;
- }
-
- if ((ret = wc_ecc_export_x963(key, NULL, &keySz)) != LENGTH_ONLY_E) {
- WOLFSSL_MSG("Error in getting ECC public key size");
- return ret;
- }
-
- if (inLen < keySz + infoSz) {
- return BUFFER_E;
- }
-
- return SetEccPublicKey(output, key, with_AlgCurve);
-}
-#endif /* HAVE_ECC */
-
-#if defined(HAVE_ED25519) && (defined(WOLFSSL_CERT_GEN) || \
- defined(WOLFSSL_KEY_GEN))
-
-/* Write a public ECC key to output */
-static int SetEd25519PublicKey(byte* output, ed25519_key* key, int with_header)
-{
- byte bitString[1 + MAX_LENGTH_SZ + 1];
- int algoSz;
- int bitStringSz;
- int idx;
- word32 pubSz = ED25519_PUB_KEY_SIZE;
-#ifdef WOLFSSL_SMALL_STACK
- byte* algo = NULL;
- byte* pub = NULL;
-#else
- byte algo[MAX_ALGO_SZ];
- byte pub[ED25519_PUB_KEY_SIZE];
-#endif
-
-#ifdef WOLFSSL_SMALL_STACK
- pub = (byte*)XMALLOC(ECC_BUFSIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL)
- return MEMORY_E;
-#endif
-
- int ret = wc_ed25519_export_public(key, pub, &pubSz);
- if (ret != 0) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return ret;
- }
-
- /* headers */
- if (with_header) {
-#ifdef WOLFSSL_SMALL_STACK
- algo = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (algo == NULL) {
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#endif
- algoSz = SetAlgoID(ED25519k, algo, oidKeyType, 0);
-
- bitStringSz = SetBitString(pubSz, 0, bitString);
-
- idx = SetSequence(pubSz + bitStringSz + algoSz, output);
- /* algo */
- XMEMCPY(output + idx, algo, algoSz);
- idx += algoSz;
- /* bit string */
- XMEMCPY(output + idx, bitString, bitStringSz);
- idx += bitStringSz;
- }
- else
- idx = 0;
-
- /* pub */
- XMEMCPY(output + idx, pub, pubSz);
- idx += pubSz;
-
-#ifdef WOLFSSL_SMALL_STACK
- if (with_header) {
- XFREE(algo, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- }
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return idx;
-}
-
-int wc_Ed25519PublicKeyToDer(ed25519_key* key, byte* output, word32 inLen,
- int withAlg)
-{
- word32 infoSz = 0;
- word32 keySz = 0;
- int ret;
-
- if (output == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
-
- if (withAlg) {
- /* buffer space for algorithm */
- infoSz += MAX_SEQ_SZ;
- infoSz += MAX_ALGO_SZ;
-
- /* buffer space for public key sequence */
- infoSz += MAX_SEQ_SZ;
- infoSz += TRAILING_ZERO;
- }
-
- if ((ret = wc_ed25519_export_public(key, output, &keySz)) != BUFFER_E) {
- WOLFSSL_MSG("Error in getting ECC public key size");
- return ret;
- }
-
- if (inLen < keySz + infoSz) {
- return BUFFER_E;
- }
-
- return SetEd25519PublicKey(output, key, withAlg);
-}
-#endif /* HAVE_ED25519 && (WOLFSSL_CERT_GEN || WOLFSSL_KEY_GEN) */
-
-
-#ifdef WOLFSSL_CERT_GEN
-
-static WC_INLINE byte itob(int number)
-{
- return (byte)number + 0x30;
-}
-
-
-/* write time to output, format */
-static void SetTime(struct tm* date, byte* output)
-{
- int i = 0;
-
- output[i++] = itob((date->tm_year % 10000) / 1000);
- output[i++] = itob((date->tm_year % 1000) / 100);
- output[i++] = itob((date->tm_year % 100) / 10);
- output[i++] = itob( date->tm_year % 10);
-
- output[i++] = itob(date->tm_mon / 10);
- output[i++] = itob(date->tm_mon % 10);
-
- output[i++] = itob(date->tm_mday / 10);
- output[i++] = itob(date->tm_mday % 10);
-
- output[i++] = itob(date->tm_hour / 10);
- output[i++] = itob(date->tm_hour % 10);
-
- output[i++] = itob(date->tm_min / 10);
- output[i++] = itob(date->tm_min % 10);
-
- output[i++] = itob(date->tm_sec / 10);
- output[i++] = itob(date->tm_sec % 10);
-
- output[i] = 'Z'; /* Zulu profile */
-}
-
-
-#ifdef WOLFSSL_ALT_NAMES
-
-/* Copy Dates from cert, return bytes written */
-static int CopyValidity(byte* output, Cert* cert)
-{
- int seqSz;
-
- WOLFSSL_ENTER("CopyValidity");
-
- /* headers and output */
- seqSz = SetSequence(cert->beforeDateSz + cert->afterDateSz, output);
- XMEMCPY(output + seqSz, cert->beforeDate, cert->beforeDateSz);
- XMEMCPY(output + seqSz + cert->beforeDateSz, cert->afterDate,
- cert->afterDateSz);
- return seqSz + cert->beforeDateSz + cert->afterDateSz;
-}
-
-#endif
-
-
-/* Set Date validity from now until now + daysValid
- * return size in bytes written to output, 0 on error */
-static int SetValidity(byte* output, int daysValid)
-{
- byte before[MAX_DATE_SIZE];
- byte after[MAX_DATE_SIZE];
-
- int beforeSz;
- int afterSz;
- int seqSz;
-
- time_t now;
- time_t then;
- struct tm* tmpTime = NULL;
- struct tm* expandedTime;
- struct tm localTime;
-
-#if defined(NEED_TMP_TIME)
- /* for use with gmtime_r */
- struct tm tmpTimeStorage;
- tmpTime = &tmpTimeStorage;
-#else
- (void)tmpTime;
-#endif
-
- now = XTIME(0);
-
- /* before now */
- before[0] = ASN_GENERALIZED_TIME;
- beforeSz = SetLength(ASN_GEN_TIME_SZ, before + 1) + 1; /* gen tag */
-
- /* subtract 1 day of seconds for more compliance */
- then = now - 86400;
- expandedTime = XGMTIME(&then, tmpTime);
- if (expandedTime == NULL) {
- WOLFSSL_MSG("XGMTIME failed");
- return 0; /* error */
- }
- localTime = *expandedTime;
-
- /* adjust */
- localTime.tm_year += 1900;
- localTime.tm_mon += 1;
-
- SetTime(&localTime, before + beforeSz);
- beforeSz += ASN_GEN_TIME_SZ;
-
- after[0] = ASN_GENERALIZED_TIME;
- afterSz = SetLength(ASN_GEN_TIME_SZ, after + 1) + 1; /* gen tag */
-
- /* add daysValid of seconds */
- then = now + (daysValid * 3600);
- expandedTime = XGMTIME(&then, tmpTime);
- if (expandedTime == NULL) {
- WOLFSSL_MSG("XGMTIME failed");
- return 0; /* error */
- }
- localTime = *expandedTime;
-
- /* adjust */
- localTime.tm_year += 1900;
- localTime.tm_mon += 1;
-
- SetTime(&localTime, after + afterSz);
- afterSz += ASN_GEN_TIME_SZ;
-
- /* headers and output */
- seqSz = SetSequence(beforeSz + afterSz, output);
- XMEMCPY(output + seqSz, before, beforeSz);
- XMEMCPY(output + seqSz + beforeSz, after, afterSz);
-
- return seqSz + beforeSz + afterSz;
-}
-
-
-/* ASN Encoded Name field */
-typedef struct EncodedName {
- int nameLen; /* actual string value length */
- int totalLen; /* total encoded length */
- int type; /* type of name */
- int used; /* are we actually using this one */
- byte encoded[CTC_NAME_SIZE * 2]; /* encoding */
-} EncodedName;
-
-
-/* Get Which Name from index */
-static const char* GetOneName(CertName* name, int idx)
-{
- switch (idx) {
- case 0:
- return name->country;
-
- case 1:
- return name->state;
-
- case 2:
- return name->locality;
-
- case 3:
- return name->sur;
-
- case 4:
- return name->org;
-
- case 5:
- return name->unit;
-
- case 6:
- return name->commonName;
-
- case 7:
- return name->email;
-
- default:
- return 0;
- }
-}
-
-
-/* Get Which Name Encoding from index */
-static char GetNameType(CertName* name, int idx)
-{
- switch (idx) {
- case 0:
- return name->countryEnc;
-
- case 1:
- return name->stateEnc;
-
- case 2:
- return name->localityEnc;
-
- case 3:
- return name->surEnc;
-
- case 4:
- return name->orgEnc;
-
- case 5:
- return name->unitEnc;
-
- case 6:
- return name->commonNameEnc;
-
- default:
- return 0;
- }
-}
-
-
-/* Get ASN Name from index */
-static byte GetNameId(int idx)
-{
- switch (idx) {
- case 0:
- return ASN_COUNTRY_NAME;
-
- case 1:
- return ASN_STATE_NAME;
-
- case 2:
- return ASN_LOCALITY_NAME;
-
- case 3:
- return ASN_SUR_NAME;
-
- case 4:
- return ASN_ORG_NAME;
-
- case 5:
- return ASN_ORGUNIT_NAME;
-
- case 6:
- return ASN_COMMON_NAME;
-
- case 7:
- return ASN_EMAIL_NAME;
-
- default:
- return 0;
- }
-}
-
-/*
- Extensions ::= SEQUENCE OF Extension
-
- Extension ::= SEQUENCE {
- extnId OBJECT IDENTIFIER,
- critical BOOLEAN DEFAULT FALSE,
- extnValue OCTET STRING }
- */
-
-/* encode all extensions, return total bytes written */
-static int SetExtensions(byte* out, word32 outSz, int *IdxInOut,
- const byte* ext, int extSz)
-{
- if (out == NULL || IdxInOut == NULL || ext == NULL)
- return BAD_FUNC_ARG;
-
- if (outSz < (word32)(*IdxInOut+extSz))
- return BUFFER_E;
-
- XMEMCPY(&out[*IdxInOut], ext, extSz); /* extensions */
- *IdxInOut += extSz;
-
- return *IdxInOut;
-}
-
-/* encode extensions header, return total bytes written */
-static int SetExtensionsHeader(byte* out, word32 outSz, int extSz)
-{
- byte sequence[MAX_SEQ_SZ];
- byte len[MAX_LENGTH_SZ];
- int seqSz, lenSz, idx = 0;
-
- if (out == NULL)
- return BAD_FUNC_ARG;
-
- if (outSz < 3)
- return BUFFER_E;
-
- seqSz = SetSequence(extSz, sequence);
-
- /* encode extensions length provided */
- lenSz = SetLength(extSz+seqSz, len);
-
- if (outSz < (word32)(lenSz+seqSz+1))
- return BUFFER_E;
-
- out[idx++] = ASN_EXTENSIONS; /* extensions id */
- XMEMCPY(&out[idx], len, lenSz); /* length */
- idx += lenSz;
-
- XMEMCPY(&out[idx], sequence, seqSz); /* sequence */
- idx += seqSz;
-
- return idx;
-}
-
-
-/* encode CA basic constraint true, return total bytes written */
-static int SetCa(byte* out, word32 outSz)
-{
- static const byte ca[] = { 0x30, 0x0c, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x04,
- 0x05, 0x30, 0x03, 0x01, 0x01, 0xff };
-
- if (out == NULL)
- return BAD_FUNC_ARG;
-
- if (outSz < sizeof(ca))
- return BUFFER_E;
-
- XMEMCPY(out, ca, sizeof(ca));
-
- return (int)sizeof(ca);
-}
-
-
-#ifdef WOLFSSL_CERT_EXT
-/* encode OID and associated value, return total bytes written */
-static int SetOidValue(byte* out, word32 outSz, const byte *oid, word32 oidSz,
- byte *in, word32 inSz)
-{
- int idx = 0;
-
- if (out == NULL || oid == NULL || in == NULL)
- return BAD_FUNC_ARG;
-
- if (outSz < 3)
- return BUFFER_E;
-
- /* sequence, + 1 => byte to put value size */
- idx = SetSequence(inSz + oidSz + 1, out);
-
- if ((idx + inSz + oidSz + 1) > outSz)
- return BUFFER_E;
-
- XMEMCPY(out+idx, oid, oidSz);
- idx += oidSz;
- out[idx++] = (byte)inSz;
- XMEMCPY(out+idx, in, inSz);
-
- return (idx+inSz);
-}
-
-/* encode Subject Key Identifier, return total bytes written
- * RFC5280 : non-critical */
-static int SetSKID(byte* output, word32 outSz, const byte *input, word32 length)
-{
- byte skid_len[1 + MAX_LENGTH_SZ];
- byte skid_enc_len[MAX_LENGTH_SZ];
- int idx = 0, skid_lenSz, skid_enc_lenSz;
- static const byte skid_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04 };
-
- if (output == NULL || input == NULL)
- return BAD_FUNC_ARG;
-
- /* Octet String header */
- skid_lenSz = SetOctetString(length, skid_len);
-
- /* length of encoded value */
- skid_enc_lenSz = SetLength(length + skid_lenSz, skid_enc_len);
-
- if (outSz < 3)
- return BUFFER_E;
-
- idx = SetSequence(length + sizeof(skid_oid) + skid_lenSz + skid_enc_lenSz,
- output);
-
- if ((length + sizeof(skid_oid) + skid_lenSz + skid_enc_lenSz) > outSz)
- return BUFFER_E;
-
- /* put oid */
- XMEMCPY(output+idx, skid_oid, sizeof(skid_oid));
- idx += sizeof(skid_oid);
-
- /* put encoded len */
- XMEMCPY(output+idx, skid_enc_len, skid_enc_lenSz);
- idx += skid_enc_lenSz;
-
- /* put octet header */
- XMEMCPY(output+idx, skid_len, skid_lenSz);
- idx += skid_lenSz;
-
- /* put value */
- XMEMCPY(output+idx, input, length);
- idx += length;
-
- return idx;
-}
-
-/* encode Authority Key Identifier, return total bytes written
- * RFC5280 : non-critical */
-static int SetAKID(byte* output, word32 outSz,
- byte *input, word32 length, void* heap)
-{
- byte *enc_val;
- int ret, enc_valSz;
- static const byte akid_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04 };
- static const byte akid_cs[] = { 0x80 };
-
- if (output == NULL || input == NULL)
- return BAD_FUNC_ARG;
-
- enc_valSz = length + 3 + sizeof(akid_cs);
- enc_val = (byte *)XMALLOC(enc_valSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (enc_val == NULL)
- return MEMORY_E;
-
- /* sequence for ContentSpec & value */
- ret = SetOidValue(enc_val, enc_valSz, akid_cs, sizeof(akid_cs),
- input, length);
- if (ret > 0) {
- enc_valSz = ret;
-
- ret = SetOidValue(output, outSz, akid_oid, sizeof(akid_oid),
- enc_val, enc_valSz);
- }
-
- XFREE(enc_val, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
-}
-
-/* encode Key Usage, return total bytes written
- * RFC5280 : critical */
-static int SetKeyUsage(byte* output, word32 outSz, word16 input)
-{
- byte ku[5];
- int idx;
- static const byte keyusage_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x0f,
- 0x01, 0x01, 0xff, 0x04};
- if (output == NULL)
- return BAD_FUNC_ARG;
-
- idx = SetBitString16Bit(input, ku);
- return SetOidValue(output, outSz, keyusage_oid, sizeof(keyusage_oid),
- ku, idx);
-}
-
-static int SetOjectIdValue(byte* output, word32 outSz, int* idx,
- const byte* oid, word32 oidSz)
-{
- /* verify room */
- if (*idx + 2 + oidSz >= outSz)
- return ASN_PARSE_E;
-
- *idx += SetObjectId(oidSz, &output[*idx]);
- XMEMCPY(&output[*idx], oid, oidSz);
- *idx += oidSz;
-
- return 0;
-}
-
-/* encode Extended Key Usage (RFC 5280 4.2.1.12), return total bytes written */
-static int SetExtKeyUsage(Cert* cert, byte* output, word32 outSz, byte input)
-{
- int idx = 0, oidListSz = 0, totalSz, ret = 0;
- static const byte extkeyusage_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x25 };
-
- if (output == NULL)
- return BAD_FUNC_ARG;
-
- /* Skip to OID List */
- totalSz = 2 + sizeof(extkeyusage_oid) + 4;
- idx = totalSz;
-
- /* Build OID List */
- /* If any set, then just use it */
- if (input & EXTKEYUSE_ANY) {
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageAnyOid, sizeof(extExtKeyUsageAnyOid));
- }
- else {
- if (input & EXTKEYUSE_SERVER_AUTH)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageServerAuthOid, sizeof(extExtKeyUsageServerAuthOid));
- if (input & EXTKEYUSE_CLIENT_AUTH)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageClientAuthOid, sizeof(extExtKeyUsageClientAuthOid));
- if (input & EXTKEYUSE_CODESIGN)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageCodeSigningOid, sizeof(extExtKeyUsageCodeSigningOid));
- if (input & EXTKEYUSE_EMAILPROT)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageEmailProtectOid, sizeof(extExtKeyUsageEmailProtectOid));
- if (input & EXTKEYUSE_TIMESTAMP)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageTimestampOid, sizeof(extExtKeyUsageTimestampOid));
- if (input & EXTKEYUSE_OCSP_SIGN)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageOcspSignOid, sizeof(extExtKeyUsageOcspSignOid));
- #ifdef WOLFSSL_EKU_OID
- /* iterate through OID values */
- if (input & EXTKEYUSE_USER) {
- int i, sz;
- for (i = 0; i < CTC_MAX_EKU_NB; i++) {
- sz = cert->extKeyUsageOIDSz[i];
- if (sz > 0) {
- ret |= SetOjectIdValue(output, outSz, &idx,
- cert->extKeyUsageOID[i], sz);
- }
- }
- }
- #endif /* WOLFSSL_EKU_OID */
- }
- if (ret != 0)
- return ASN_PARSE_E;
-
- /* Calculate Sizes */
- oidListSz = idx - totalSz;
- totalSz = idx - 2; /* exclude first seq/len (2) */
-
- /* 1. Seq + Total Len (2) */
- idx = SetSequence(totalSz, output);
-
- /* 2. Object ID (2) */
- XMEMCPY(&output[idx], extkeyusage_oid, sizeof(extkeyusage_oid));
- idx += sizeof(extkeyusage_oid);
-
- /* 3. Octect String (2) */
- idx += SetOctetString(totalSz - idx, &output[idx]);
-
- /* 4. Seq + OidListLen (2) */
- idx += SetSequence(oidListSz, &output[idx]);
-
- /* 5. Oid List (already set in-place above) */
- idx += oidListSz;
-
- (void)cert;
- return idx;
-}
-
-/* Encode OID string representation to ITU-T X.690 format */
-static int EncodePolicyOID(byte *out, word32 *outSz, const char *in, void* heap)
-{
- word32 val, idx = 0, nb_val;
- char *token, *str, *ptr;
- word32 len;
-
- if (out == NULL || outSz == NULL || *outSz < 2 || in == NULL)
- return BAD_FUNC_ARG;
-
- len = (word32)XSTRLEN(in);
-
- str = (char *)XMALLOC(len+1, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (str == NULL)
- return MEMORY_E;
-
- XSTRNCPY(str, in, len);
- str[len] = '\0';
-
- nb_val = 0;
-
- /* parse value, and set corresponding Policy OID value */
- token = XSTRTOK(str, ".", &ptr);
- while (token != NULL)
- {
- val = (word32)atoi(token);
-
- if (nb_val == 0) {
- if (val > 2) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ASN_OBJECT_ID_E;
- }
-
- out[idx] = (byte)(40 * val);
- }
- else if (nb_val == 1) {
- if (val > 127) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ASN_OBJECT_ID_E;
- }
-
- if (idx > *outSz) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return BUFFER_E;
- }
-
- out[idx++] += (byte)val;
- }
- else {
- word32 tb = 0, x;
- int i = 0;
- byte oid[MAX_OID_SZ];
-
- while (val >= 128) {
- x = val % 128;
- val /= 128;
- oid[i++] = (byte) (((tb++) ? 0x80 : 0) | x);
- }
-
- if ((idx+(word32)i) > *outSz) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return BUFFER_E;
- }
-
- oid[i] = (byte) (((tb++) ? 0x80 : 0) | val);
-
- /* push value in the right order */
- while (i >= 0)
- out[idx++] = oid[i--];
- }
-
- token = XSTRTOK(NULL, ".", &ptr);
- nb_val++;
- }
-
- *outSz = idx;
-
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return 0;
-}
-
-/* encode Certificate Policies, return total bytes written
- * each input value must be ITU-T X.690 formatted : a.b.c...
- * input must be an array of values with a NULL terminated for the latest
- * RFC5280 : non-critical */
-static int SetCertificatePolicies(byte *output,
- word32 outputSz,
- char input[MAX_CERTPOL_NB][MAX_CERTPOL_SZ],
- word16 nb_certpol,
- void* heap)
-{
- byte oid[MAX_OID_SZ],
- der_oid[MAX_CERTPOL_NB][MAX_OID_SZ],
- out[MAX_CERTPOL_SZ];
- word32 oidSz;
- word32 outSz, i = 0, der_oidSz[MAX_CERTPOL_NB];
- int ret;
-
- static const byte certpol_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x20, 0x04 };
- static const byte oid_oid[] = { 0x06 };
-
- if (output == NULL || input == NULL || nb_certpol > MAX_CERTPOL_NB)
- return BAD_FUNC_ARG;
-
- for (i = 0; i < nb_certpol; i++) {
- oidSz = sizeof(oid);
- XMEMSET(oid, 0, oidSz);
-
- ret = EncodePolicyOID(oid, &oidSz, input[i], heap);
- if (ret != 0)
- return ret;
-
- /* compute sequence value for the oid */
- ret = SetOidValue(der_oid[i], MAX_OID_SZ, oid_oid,
- sizeof(oid_oid), oid, oidSz);
- if (ret <= 0)
- return ret;
- else
- der_oidSz[i] = (word32)ret;
- }
-
- /* concatenate oid, keep two byte for sequence/size of the created value */
- for (i = 0, outSz = 2; i < nb_certpol; i++) {
- XMEMCPY(out+outSz, der_oid[i], der_oidSz[i]);
- outSz += der_oidSz[i];
- }
-
- /* add sequence */
- ret = SetSequence(outSz-2, out);
- if (ret <= 0)
- return ret;
-
- /* add Policy OID to compute final value */
- return SetOidValue(output, outputSz, certpol_oid, sizeof(certpol_oid),
- out, outSz);
-}
-#endif /* WOLFSSL_CERT_EXT */
-
-#ifdef WOLFSSL_ALT_NAMES
-/* encode Alternative Names, return total bytes written */
-static int SetAltNames(byte *out, word32 outSz, byte *input, word32 length)
-{
- if (out == NULL || input == NULL)
- return BAD_FUNC_ARG;
-
- if (outSz < length)
- return BUFFER_E;
-
- /* Alternative Names come from certificate or computed by
- * external function, so already encoded. Just copy value */
- XMEMCPY(out, input, length);
- return length;
-}
-#endif /* WOLFSL_ALT_NAMES */
-
-/* Encodes one attribute of the name (issuer/subject)
- *
- * name structure to hold result of encoding
- * nameStr value to be encoded
- * nameType type of encoding i.e CTC_UTF8
- * type id of attribute i.e ASN_COMMON_NAME
- *
- * returns length on success
- */
-static int wc_EncodeName(EncodedName* name, const char* nameStr, char nameType,
- byte type)
-{
- word32 idx = 0;
-
- if (nameStr) {
- /* bottom up */
- byte firstLen[1 + MAX_LENGTH_SZ];
- byte secondLen[MAX_LENGTH_SZ];
- byte sequence[MAX_SEQ_SZ];
- byte set[MAX_SET_SZ];
-
- int strLen = (int)XSTRLEN(nameStr);
- int thisLen = strLen;
- int firstSz, secondSz, seqSz, setSz;
-
- if (strLen == 0) { /* no user data for this item */
- name->used = 0;
- return 0;
- }
-
- /* Restrict country code size */
- if (ASN_COUNTRY_NAME == type && strLen != CTC_COUNTRY_SIZE) {
- return ASN_COUNTRY_SIZE_E;
- }
-
- secondSz = SetLength(strLen, secondLen);
- thisLen += secondSz;
- switch (type) {
- case ASN_EMAIL_NAME: /* email */
- thisLen += EMAIL_JOINT_LEN;
- firstSz = EMAIL_JOINT_LEN;
- break;
-
- case ASN_DOMAIN_COMPONENT:
- thisLen += PILOT_JOINT_LEN;
- firstSz = PILOT_JOINT_LEN;
- break;
-
- default:
- thisLen++; /* str type */
- thisLen += JOINT_LEN;
- firstSz = JOINT_LEN + 1;
- }
- thisLen++; /* id type */
- firstSz = SetObjectId(firstSz, firstLen);
- thisLen += firstSz;
-
- seqSz = SetSequence(thisLen, sequence);
- thisLen += seqSz;
- setSz = SetSet(thisLen, set);
- thisLen += setSz;
-
- if (thisLen > (int)sizeof(name->encoded)) {
- return BUFFER_E;
- }
-
- /* store it */
- idx = 0;
- /* set */
- XMEMCPY(name->encoded, set, setSz);
- idx += setSz;
- /* seq */
- XMEMCPY(name->encoded + idx, sequence, seqSz);
- idx += seqSz;
- /* asn object id */
- XMEMCPY(name->encoded + idx, firstLen, firstSz);
- idx += firstSz;
- switch (type) {
- case ASN_EMAIL_NAME:
- {
- const byte EMAIL_OID[] = { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
- 0x01, 0x09, 0x01, 0x16 };
- /* email joint id */
- XMEMCPY(name->encoded + idx, EMAIL_OID, sizeof(EMAIL_OID));
- idx += (int)sizeof(EMAIL_OID);
- }
- break;
-
- case ASN_DOMAIN_COMPONENT:
- {
- const byte PILOT_OID[] = { 0x09, 0x92, 0x26, 0x89,
- 0x93, 0xF2, 0x2C, 0x64, 0x01
- };
-
- XMEMCPY(name->encoded + idx, PILOT_OID,
- sizeof(PILOT_OID));
- idx += (int)sizeof(PILOT_OID);
- /* id type */
- name->encoded[idx++] = type;
- /* str type */
- name->encoded[idx++] = nameType;
- }
- break;
-
- default:
- name->encoded[idx++] = 0x55;
- name->encoded[idx++] = 0x04;
- /* id type */
- name->encoded[idx++] = type;
- /* str type */
- name->encoded[idx++] = nameType;
- }
- /* second length */
- XMEMCPY(name->encoded + idx, secondLen, secondSz);
- idx += secondSz;
- /* str value */
- XMEMCPY(name->encoded + idx, nameStr, strLen);
- idx += strLen;
-
- name->type = type;
- name->totalLen = idx;
- name->used = 1;
- }
- else
- name->used = 0;
-
- return idx;
-}
-
-/* encode CertName into output, return total bytes written */
-int SetName(byte* output, word32 outputSz, CertName* name)
-{
- int totalBytes = 0, i, idx;
-#ifdef WOLFSSL_SMALL_STACK
- EncodedName* names = NULL;
-#else
- EncodedName names[NAME_ENTRIES];
-#endif
-#ifdef WOLFSSL_MULTI_ATTRIB
- EncodedName addNames[CTC_MAX_ATTRIB];
- int j, type;
-#endif
-
- if (output == NULL || name == NULL)
- return BAD_FUNC_ARG;
-
- if (outputSz < 3)
- return BUFFER_E;
-
-#ifdef WOLFSSL_SMALL_STACK
- names = (EncodedName*)XMALLOC(sizeof(EncodedName) * NAME_ENTRIES, NULL,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (names == NULL)
- return MEMORY_E;
-#endif
-
- for (i = 0; i < NAME_ENTRIES; i++) {
- int ret;
- const char* nameStr = GetOneName(name, i);
-
- ret = wc_EncodeName(&names[i], nameStr, GetNameType(name, i),
- GetNameId(i));
- if (ret < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- totalBytes += ret;
- }
-#ifdef WOLFSSL_MULTI_ATTRIB
- for (i = 0; i < CTC_MAX_ATTRIB; i++) {
- if (name->name[i].sz > 0) {
- int ret;
- ret = wc_EncodeName(&addNames[i], name->name[i].value,
- name->name[i].type, name->name[i].id);
- if (ret < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- totalBytes += ret;
- }
- else {
- addNames[i].used = 0;
- }
- }
-#endif /* WOLFSSL_MULTI_ATTRIB */
-
- /* header */
- idx = SetSequence(totalBytes, output);
- totalBytes += idx;
- if (totalBytes > ASN_NAME_MAX) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return BUFFER_E;
- }
-
- for (i = 0; i < NAME_ENTRIES; i++) {
- #ifdef WOLFSSL_MULTI_ATTRIB
- type = GetNameId(i);
-
- /* list all DC values before OUs */
- if (type == ASN_ORGUNIT_NAME) {
- type = ASN_DOMAIN_COMPONENT;
- for (j = 0; j < CTC_MAX_ATTRIB; j++) {
- if (name->name[j].sz > 0 && type == name->name[j].id) {
- if (outputSz < (word32)(idx+addNames[j].totalLen)) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
-
- XMEMCPY(output + idx, addNames[j].encoded,
- addNames[j].totalLen);
- idx += addNames[j].totalLen;
- }
- }
- type = ASN_ORGUNIT_NAME;
- }
-
- /* write all similar types to the buffer */
- for (j = 0; j < CTC_MAX_ATTRIB; j++) {
- if (name->name[j].sz > 0 && type == name->name[j].id) {
- if (outputSz < (word32)(idx+addNames[j].totalLen)) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
-
- XMEMCPY(output + idx, addNames[j].encoded,
- addNames[j].totalLen);
- idx += addNames[j].totalLen;
- }
- }
- #endif /* WOLFSSL_MULTI_ATTRIB */
-
- if (names[i].used) {
- if (outputSz < (word32)(idx+names[i].totalLen)) {
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
- return BUFFER_E;
- }
-
- XMEMCPY(output + idx, names[i].encoded, names[i].totalLen);
- idx += names[i].totalLen;
- }
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return totalBytes;
-}
-
-/* encode info from cert into DER encoded format */
-static int EncodeCert(Cert* cert, DerCert* der, RsaKey* rsaKey, ecc_key* eccKey,
- WC_RNG* rng, const byte* ntruKey, word16 ntruSz,
- ed25519_key* ed25519Key)
-{
- int ret;
-
- if (cert == NULL || der == NULL || rng == NULL)
- return BAD_FUNC_ARG;
-
- /* make sure at least one key type is provided */
- if (rsaKey == NULL && eccKey == NULL && ed25519Key == NULL && ntruKey == NULL)
- return PUBLIC_KEY_E;
-
- /* init */
- XMEMSET(der, 0, sizeof(DerCert));
-
- /* version */
- der->versionSz = SetMyVersion(cert->version, der->version, TRUE);
-
- /* serial number (must be positive) */
- if (cert->serialSz == 0) {
- /* generate random serial */
- cert->serialSz = CTC_SERIAL_SIZE;
- ret = wc_RNG_GenerateBlock(rng, cert->serial, cert->serialSz);
- if (ret != 0)
- return ret;
- }
- der->serialSz = SetSerialNumber(cert->serial, cert->serialSz, der->serial,
- CTC_SERIAL_SIZE);
- if (der->serialSz < 0)
- return der->serialSz;
-
- /* signature algo */
- der->sigAlgoSz = SetAlgoID(cert->sigType, der->sigAlgo, oidSigType, 0);
- if (der->sigAlgoSz <= 0)
- return ALGO_ID_E;
-
- /* public key */
-#ifndef NO_RSA
- if (cert->keyType == RSA_KEY) {
- if (rsaKey == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
- sizeof(der->publicKey), 1);
- }
-#endif
-
-#ifdef HAVE_ECC
- if (cert->keyType == ECC_KEY) {
- if (eccKey == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
- }
-#endif
-
-#ifdef HAVE_ED25519
- if (cert->keyType == ED25519_KEY) {
- if (ed25519Key == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetEd25519PublicKey(der->publicKey, ed25519Key, 1);
- }
-#endif
-
-#ifdef HAVE_NTRU
- if (cert->keyType == NTRU_KEY) {
- word32 rc;
- word16 encodedSz;
-
- if (ntruKey == NULL)
- return PUBLIC_KEY_E;
-
- rc = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(ntruSz,
- ntruKey, &encodedSz, NULL);
- if (rc != NTRU_OK)
- return PUBLIC_KEY_E;
- if (encodedSz > MAX_PUBLIC_KEY_SZ)
- return PUBLIC_KEY_E;
-
- rc = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(ntruSz,
- ntruKey, &encodedSz, der->publicKey);
- if (rc != NTRU_OK)
- return PUBLIC_KEY_E;
-
- der->publicKeySz = encodedSz;
- }
-#else
- (void)ntruSz;
-#endif /* HAVE_NTRU */
-
- if (der->publicKeySz <= 0)
- return PUBLIC_KEY_E;
-
- der->validitySz = 0;
-#ifdef WOLFSSL_ALT_NAMES
- /* date validity copy ? */
- if (cert->beforeDateSz && cert->afterDateSz) {
- der->validitySz = CopyValidity(der->validity, cert);
- if (der->validitySz <= 0)
- return DATE_E;
- }
-#endif
-
- /* date validity */
- if (der->validitySz == 0) {
- der->validitySz = SetValidity(der->validity, cert->daysValid);
- if (der->validitySz <= 0)
- return DATE_E;
- }
-
- /* subject name */
- der->subjectSz = SetName(der->subject, sizeof(der->subject), &cert->subject);
- if (der->subjectSz <= 0)
- return SUBJECT_E;
-
- /* issuer name */
- der->issuerSz = SetName(der->issuer, sizeof(der->issuer), cert->selfSigned ?
- &cert->subject : &cert->issuer);
- if (der->issuerSz <= 0)
- return ISSUER_E;
-
- /* set the extensions */
- der->extensionsSz = 0;
-
- /* CA */
- if (cert->isCA) {
- der->caSz = SetCa(der->ca, sizeof(der->ca));
- if (der->caSz <= 0)
- return CA_TRUE_E;
-
- der->extensionsSz += der->caSz;
- }
- else
- der->caSz = 0;
-
-#ifdef WOLFSSL_ALT_NAMES
- /* Alternative Name */
- if (cert->altNamesSz) {
- der->altNamesSz = SetAltNames(der->altNames, sizeof(der->altNames),
- cert->altNames, cert->altNamesSz);
- if (der->altNamesSz <= 0)
- return ALT_NAME_E;
-
- der->extensionsSz += der->altNamesSz;
- }
- else
- der->altNamesSz = 0;
-#endif
-
-#ifdef WOLFSSL_CERT_EXT
- /* SKID */
- if (cert->skidSz) {
- /* check the provided SKID size */
- if (cert->skidSz > (int)min(CTC_MAX_SKID_SIZE, sizeof(der->skid)))
- return SKID_E;
-
- /* Note: different skid buffers sizes for der (MAX_KID_SZ) and
- cert (CTC_MAX_SKID_SIZE). */
- der->skidSz = SetSKID(der->skid, sizeof(der->skid),
- cert->skid, cert->skidSz);
- if (der->skidSz <= 0)
- return SKID_E;
-
- der->extensionsSz += der->skidSz;
- }
- else
- der->skidSz = 0;
-
- /* AKID */
- if (cert->akidSz) {
- /* check the provided AKID size */
- if (cert->akidSz > (int)min(CTC_MAX_AKID_SIZE, sizeof(der->akid)))
- return AKID_E;
-
- der->akidSz = SetAKID(der->akid, sizeof(der->akid),
- cert->akid, cert->akidSz, cert->heap);
- if (der->akidSz <= 0)
- return AKID_E;
-
- der->extensionsSz += der->akidSz;
- }
- else
- der->akidSz = 0;
-
- /* Key Usage */
- if (cert->keyUsage != 0){
- der->keyUsageSz = SetKeyUsage(der->keyUsage, sizeof(der->keyUsage),
- cert->keyUsage);
- if (der->keyUsageSz <= 0)
- return KEYUSAGE_E;
-
- der->extensionsSz += der->keyUsageSz;
- }
- else
- der->keyUsageSz = 0;
-
- /* Extended Key Usage */
- if (cert->extKeyUsage != 0){
- der->extKeyUsageSz = SetExtKeyUsage(cert, der->extKeyUsage,
- sizeof(der->extKeyUsage), cert->extKeyUsage);
- if (der->extKeyUsageSz <= 0)
- return EXTKEYUSAGE_E;
-
- der->extensionsSz += der->extKeyUsageSz;
- }
- else
- der->extKeyUsageSz = 0;
-
- /* Certificate Policies */
- if (cert->certPoliciesNb != 0) {
- der->certPoliciesSz = SetCertificatePolicies(der->certPolicies,
- sizeof(der->certPolicies),
- cert->certPolicies,
- cert->certPoliciesNb,
- cert->heap);
- if (der->certPoliciesSz <= 0)
- return CERTPOLICIES_E;
-
- der->extensionsSz += der->certPoliciesSz;
- }
- else
- der->certPoliciesSz = 0;
-#endif /* WOLFSSL_CERT_EXT */
-
- /* put extensions */
- if (der->extensionsSz > 0) {
-
- /* put the start of extensions sequence (ID, Size) */
- der->extensionsSz = SetExtensionsHeader(der->extensions,
- sizeof(der->extensions),
- der->extensionsSz);
- if (der->extensionsSz <= 0)
- return EXTENSIONS_E;
-
- /* put CA */
- if (der->caSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->ca, der->caSz);
- if (ret == 0)
- return EXTENSIONS_E;
- }
-
-#ifdef WOLFSSL_ALT_NAMES
- /* put Alternative Names */
- if (der->altNamesSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->altNames, der->altNamesSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-#endif
-
-#ifdef WOLFSSL_CERT_EXT
- /* put SKID */
- if (der->skidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->skid, der->skidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
- /* put AKID */
- if (der->akidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->akid, der->akidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
- /* put KeyUsage */
- if (der->keyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->keyUsage, der->keyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
- /* put ExtendedKeyUsage */
- if (der->extKeyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->extKeyUsage, der->extKeyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
- /* put Certificate Policies */
- if (der->certPoliciesSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->certPolicies, der->certPoliciesSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-#endif /* WOLFSSL_CERT_EXT */
- }
-
- der->total = der->versionSz + der->serialSz + der->sigAlgoSz +
- der->publicKeySz + der->validitySz + der->subjectSz + der->issuerSz +
- der->extensionsSz;
-
- return 0;
-}
-
-
-/* write DER encoded cert to buffer, size already checked */
-static int WriteCertBody(DerCert* der, byte* buffer)
-{
- int idx;
-
- /* signed part header */
- idx = SetSequence(der->total, buffer);
- /* version */
- XMEMCPY(buffer + idx, der->version, der->versionSz);
- idx += der->versionSz;
- /* serial */
- XMEMCPY(buffer + idx, der->serial, der->serialSz);
- idx += der->serialSz;
- /* sig algo */
- XMEMCPY(buffer + idx, der->sigAlgo, der->sigAlgoSz);
- idx += der->sigAlgoSz;
- /* issuer */
- XMEMCPY(buffer + idx, der->issuer, der->issuerSz);
- idx += der->issuerSz;
- /* validity */
- XMEMCPY(buffer + idx, der->validity, der->validitySz);
- idx += der->validitySz;
- /* subject */
- XMEMCPY(buffer + idx, der->subject, der->subjectSz);
- idx += der->subjectSz;
- /* public key */
- XMEMCPY(buffer + idx, der->publicKey, der->publicKeySz);
- idx += der->publicKeySz;
- if (der->extensionsSz) {
- /* extensions */
- XMEMCPY(buffer + idx, der->extensions, min(der->extensionsSz,
- (int)sizeof(der->extensions)));
- idx += der->extensionsSz;
- }
-
- return idx;
-}
-
-
-/* Make RSA signature from buffer (sz), write to sig (sigSz) */
-static int MakeSignature(CertSignCtx* certSignCtx, const byte* buffer, int sz,
- byte* sig, int sigSz, RsaKey* rsaKey, ecc_key* eccKey,
- ed25519_key* ed25519Key, WC_RNG* rng, int sigAlgoType, void* heap)
-{
- int digestSz = 0, typeH = 0, ret = 0;
-
- (void)digestSz;
- (void)typeH;
- (void)buffer;
- (void)sz;
- (void)sig;
- (void)sigSz;
- (void)rsaKey;
- (void)eccKey;
- (void)ed25519Key;
- (void)rng;
-
- switch (certSignCtx->state) {
- case CERTSIGN_STATE_BEGIN:
- case CERTSIGN_STATE_DIGEST:
-
- certSignCtx->state = CERTSIGN_STATE_DIGEST;
- certSignCtx->digest = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (certSignCtx->digest == NULL) {
- ret = MEMORY_E; goto exit_ms;
- }
-
- ret = HashForSignature(buffer, sz, sigAlgoType, certSignCtx->digest,
- &typeH, &digestSz, 0);
- /* set next state, since WC_PENDING rentry for these are not "call again" */
- certSignCtx->state = CERTSIGN_STATE_ENCODE;
- if (ret != 0) {
- goto exit_ms;
- }
- FALL_THROUGH;
-
- case CERTSIGN_STATE_ENCODE:
- #ifndef NO_RSA
- if (rsaKey) {
- certSignCtx->encSig = (byte*)XMALLOC(MAX_DER_DIGEST_SZ, heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (certSignCtx->encSig == NULL) {
- ret = MEMORY_E; goto exit_ms;
- }
-
- /* signature */
- certSignCtx->encSigSz = wc_EncodeSignature(certSignCtx->encSig,
- certSignCtx->digest, digestSz, typeH);
- }
- #endif /* !NO_RSA */
- FALL_THROUGH;
-
- case CERTSIGN_STATE_DO:
- certSignCtx->state = CERTSIGN_STATE_DO;
- ret = ALGO_ID_E; /* default to error */
-
- #ifndef NO_RSA
- if (rsaKey) {
- /* signature */
- ret = wc_RsaSSL_Sign(certSignCtx->encSig, certSignCtx->encSigSz,
- sig, sigSz, rsaKey, rng);
- }
- #endif /* !NO_RSA */
-
- #ifdef HAVE_ECC
- if (!rsaKey && eccKey) {
- word32 outSz = sigSz;
-
- ret = wc_ecc_sign_hash(certSignCtx->digest, digestSz,
- sig, &outSz, rng, eccKey);
- if (ret == 0)
- ret = outSz;
- }
- #endif /* HAVE_ECC */
-
- #ifdef HAVE_ED25519
- if (!rsaKey && !eccKey && ed25519Key) {
- word32 outSz = sigSz;
-
- ret = wc_ed25519_sign_msg(buffer, sz, sig, &outSz, ed25519Key);
- if (ret == 0)
- ret = outSz;
- }
- #endif /* HAVE_ECC */
- break;
- }
-
-exit_ms:
-
- if (ret == WC_PENDING_E) {
- return ret;
- }
-
-#ifndef NO_RSA
- if (rsaKey) {
- XFREE(certSignCtx->encSig, heap, DYNAMIC_TYPE_TMP_BUFFER);
- }
-#endif /* !NO_RSA */
-
- XFREE(certSignCtx->digest, heap, DYNAMIC_TYPE_TMP_BUFFER);
- certSignCtx->digest = NULL;
-
- /* reset state */
- certSignCtx->state = CERTSIGN_STATE_BEGIN;
-
- return ret;
-}
-
-
-/* add signature to end of buffer, size of buffer assumed checked, return
- new length */
-static int AddSignature(byte* buffer, int bodySz, const byte* sig, int sigSz,
- int sigAlgoType)
-{
- byte seq[MAX_SEQ_SZ];
- int idx = bodySz, seqSz;
-
- /* algo */
- idx += SetAlgoID(sigAlgoType, buffer + idx, oidSigType, 0);
- /* bit string */
- idx += SetBitString(sigSz, 0, buffer + idx);
- /* signature */
- XMEMCPY(buffer + idx, sig, sigSz);
- idx += sigSz;
-
- /* make room for overall header */
- seqSz = SetSequence(idx, seq);
- XMEMMOVE(buffer + seqSz, buffer, idx);
- XMEMCPY(buffer, seq, seqSz);
-
- return idx + seqSz;
-}
-
-
-/* Make an x509 Certificate v3 any key type from cert input, write to buffer */
-static int MakeAnyCert(Cert* cert, byte* derBuffer, word32 derSz,
- RsaKey* rsaKey, ecc_key* eccKey, WC_RNG* rng,
- const byte* ntruKey, word16 ntruSz,
- ed25519_key* ed25519Key)
-{
- int ret;
-#ifdef WOLFSSL_SMALL_STACK
- DerCert* der;
-#else
- DerCert der[1];
-#endif
-
- cert->keyType = eccKey ? ECC_KEY : (rsaKey ? RSA_KEY :
- (ed25519Key ? ED25519_KEY : NTRU_KEY));
-
-#ifdef WOLFSSL_SMALL_STACK
- der = (DerCert*)XMALLOC(sizeof(DerCert), cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (der == NULL)
- return MEMORY_E;
-#endif
-
- ret = EncodeCert(cert, der, rsaKey, eccKey, rng, ntruKey, ntruSz,
- ed25519Key);
- if (ret == 0) {
- if (der->total + MAX_SEQ_SZ * 2 > (int)derSz)
- ret = BUFFER_E;
- else
- ret = cert->bodySz = WriteCertBody(der, derBuffer);
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(der, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return ret;
-}
-
-
-/* Make an x509 Certificate v3 RSA or ECC from cert input, write to buffer */
-int wc_MakeCert_ex(Cert* cert, byte* derBuffer, word32 derSz, int keyType,
- void* key, WC_RNG* rng)
-{
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
-
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
-
- return MakeAnyCert(cert, derBuffer, derSz, rsaKey, eccKey, rng, NULL, 0,
- ed25519Key);
-}
-/* Make an x509 Certificate v3 RSA or ECC from cert input, write to buffer */
-int wc_MakeCert(Cert* cert, byte* derBuffer, word32 derSz, RsaKey* rsaKey,
- ecc_key* eccKey, WC_RNG* rng)
-{
- return MakeAnyCert(cert, derBuffer, derSz, rsaKey, eccKey, rng, NULL, 0,
- NULL);
-}
-
-
-#ifdef HAVE_NTRU
-
-int wc_MakeNtruCert(Cert* cert, byte* derBuffer, word32 derSz,
- const byte* ntruKey, word16 keySz, WC_RNG* rng)
-{
- return MakeAnyCert(cert, derBuffer, derSz, NULL, NULL, rng, ntruKey, keySz, NULL);
-}
-
-#endif /* HAVE_NTRU */
-
-
-#ifdef WOLFSSL_CERT_REQ
-
-static int SetReqAttrib(byte* output, char* pw, int extSz)
-{
- static const byte cpOid[] =
- { ASN_OBJECT_ID, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
- 0x09, 0x07 };
- static const byte erOid[] =
- { ASN_OBJECT_ID, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
- 0x09, 0x0e };
-
- int sz = 0; /* overall size */
- int cpSz = 0; /* Challenge Password section size */
- int cpSeqSz = 0;
- int cpSetSz = 0;
- int cpStrSz = 0;
- int pwSz = 0;
- int erSz = 0; /* Extension Request section size */
- int erSeqSz = 0;
- int erSetSz = 0;
- byte cpSeq[MAX_SEQ_SZ];
- byte cpSet[MAX_SET_SZ];
- byte cpStr[MAX_PRSTR_SZ];
- byte erSeq[MAX_SEQ_SZ];
- byte erSet[MAX_SET_SZ];
-
- output[0] = 0xa0;
- sz++;
-
- if (pw && pw[0]) {
- pwSz = (int)XSTRLEN(pw);
- cpStrSz = SetUTF8String(pwSz, cpStr);
- cpSetSz = SetSet(cpStrSz + pwSz, cpSet);
- cpSeqSz = SetSequence(sizeof(cpOid) + cpSetSz + cpStrSz + pwSz, cpSeq);
- cpSz = cpSeqSz + sizeof(cpOid) + cpSetSz + cpStrSz + pwSz;
- }
-
- if (extSz) {
- erSetSz = SetSet(extSz, erSet);
- erSeqSz = SetSequence(erSetSz + sizeof(erOid) + extSz, erSeq);
- erSz = extSz + erSetSz + erSeqSz + sizeof(erOid);
- }
-
- /* Put the pieces together. */
- sz += SetLength(cpSz + erSz, &output[sz]);
-
- if (cpSz) {
- XMEMCPY(&output[sz], cpSeq, cpSeqSz);
- sz += cpSeqSz;
- XMEMCPY(&output[sz], cpOid, sizeof(cpOid));
- sz += sizeof(cpOid);
- XMEMCPY(&output[sz], cpSet, cpSetSz);
- sz += cpSetSz;
- XMEMCPY(&output[sz], cpStr, cpStrSz);
- sz += cpStrSz;
- XMEMCPY(&output[sz], pw, pwSz);
- sz += pwSz;
- }
-
- if (erSz) {
- XMEMCPY(&output[sz], erSeq, erSeqSz);
- sz += erSeqSz;
- XMEMCPY(&output[sz], erOid, sizeof(erOid));
- sz += sizeof(erOid);
- XMEMCPY(&output[sz], erSet, erSetSz);
- sz += erSetSz;
- /* The actual extension data will be tacked onto the output later. */
- }
-
- return sz;
-}
-
-
-/* encode info from cert into DER encoded format */
-static int EncodeCertReq(Cert* cert, DerCert* der, RsaKey* rsaKey,
- ecc_key* eccKey, ed25519_key* ed25519Key)
-{
- (void)eccKey;
- (void)ed25519Key;
-
- if (cert == NULL || der == NULL)
- return BAD_FUNC_ARG;
-
- if (rsaKey == NULL && eccKey == NULL && ed25519Key == NULL)
- return PUBLIC_KEY_E;
-
- /* init */
- XMEMSET(der, 0, sizeof(DerCert));
-
- /* version */
- der->versionSz = SetMyVersion(cert->version, der->version, FALSE);
-
- /* subject name */
- der->subjectSz = SetName(der->subject, sizeof(der->subject), &cert->subject);
- if (der->subjectSz <= 0)
- return SUBJECT_E;
-
- /* public key */
-#ifndef NO_RSA
- if (cert->keyType == RSA_KEY) {
- if (rsaKey == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
- sizeof(der->publicKey), 1);
- }
-#endif
-
-#ifdef HAVE_ECC
- if (cert->keyType == ECC_KEY) {
- der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
- }
-#endif
-
-#ifdef HAVE_ED25519
- if (cert->keyType == ED25519_KEY) {
- if (ed25519Key == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetEd25519PublicKey(der->publicKey, ed25519Key, 1);
- }
-#endif
-
- if (der->publicKeySz <= 0)
- return PUBLIC_KEY_E;
-
- /* set the extensions */
- der->extensionsSz = 0;
-
- /* CA */
- if (cert->isCA) {
- der->caSz = SetCa(der->ca, sizeof(der->ca));
- if (der->caSz <= 0)
- return CA_TRUE_E;
-
- der->extensionsSz += der->caSz;
- }
- else
- der->caSz = 0;
-
-#ifdef WOLFSSL_CERT_EXT
- /* SKID */
- if (cert->skidSz) {
- /* check the provided SKID size */
- if (cert->skidSz > (int)min(CTC_MAX_SKID_SIZE, sizeof(der->skid)))
- return SKID_E;
-
- der->skidSz = SetSKID(der->skid, sizeof(der->skid),
- cert->skid, cert->skidSz);
- if (der->skidSz <= 0)
- return SKID_E;
-
- der->extensionsSz += der->skidSz;
- }
- else
- der->skidSz = 0;
-
- /* Key Usage */
- if (cert->keyUsage != 0){
- der->keyUsageSz = SetKeyUsage(der->keyUsage, sizeof(der->keyUsage),
- cert->keyUsage);
- if (der->keyUsageSz <= 0)
- return KEYUSAGE_E;
-
- der->extensionsSz += der->keyUsageSz;
- }
- else
- der->keyUsageSz = 0;
-
- /* Extended Key Usage */
- if (cert->extKeyUsage != 0){
- der->extKeyUsageSz = SetExtKeyUsage(cert, der->extKeyUsage,
- sizeof(der->extKeyUsage), cert->extKeyUsage);
- if (der->extKeyUsageSz <= 0)
- return EXTKEYUSAGE_E;
-
- der->extensionsSz += der->extKeyUsageSz;
- }
- else
- der->extKeyUsageSz = 0;
-
-#endif /* WOLFSSL_CERT_EXT */
-
- /* put extensions */
- if (der->extensionsSz > 0) {
- int ret;
-
- /* put the start of sequence (ID, Size) */
- der->extensionsSz = SetSequence(der->extensionsSz, der->extensions);
- if (der->extensionsSz <= 0)
- return EXTENSIONS_E;
-
- /* put CA */
- if (der->caSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->ca, der->caSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
-#ifdef WOLFSSL_CERT_EXT
- /* put SKID */
- if (der->skidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->skid, der->skidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
- /* put AKID */
- if (der->akidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->akid, der->akidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
- /* put KeyUsage */
- if (der->keyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->keyUsage, der->keyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
- /* put ExtendedKeyUsage */
- if (der->extKeyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->extKeyUsage, der->extKeyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
-
-#endif /* WOLFSSL_CERT_EXT */
- }
-
- der->attribSz = SetReqAttrib(der->attrib,
- cert->challengePw, der->extensionsSz);
- if (der->attribSz <= 0)
- return REQ_ATTRIBUTE_E;
-
- der->total = der->versionSz + der->subjectSz + der->publicKeySz +
- der->extensionsSz + der->attribSz;
-
- return 0;
-}
-
-
-/* write DER encoded cert req to buffer, size already checked */
-static int WriteCertReqBody(DerCert* der, byte* buffer)
-{
- int idx;
-
- /* signed part header */
- idx = SetSequence(der->total, buffer);
- /* version */
- XMEMCPY(buffer + idx, der->version, der->versionSz);
- idx += der->versionSz;
- /* subject */
- XMEMCPY(buffer + idx, der->subject, der->subjectSz);
- idx += der->subjectSz;
- /* public key */
- XMEMCPY(buffer + idx, der->publicKey, der->publicKeySz);
- idx += der->publicKeySz;
- /* attributes */
- XMEMCPY(buffer + idx, der->attrib, der->attribSz);
- idx += der->attribSz;
- /* extensions */
- if (der->extensionsSz) {
- XMEMCPY(buffer + idx, der->extensions, min(der->extensionsSz,
- (int)sizeof(der->extensions)));
- idx += der->extensionsSz;
- }
-
- return idx;
-}
-
-
-static int MakeCertReq(Cert* cert, byte* derBuffer, word32 derSz,
- RsaKey* rsaKey, ecc_key* eccKey, ed25519_key* ed25519Key)
-{
- int ret;
-#ifdef WOLFSSL_SMALL_STACK
- DerCert* der;
-#else
- DerCert der[1];
-#endif
-
- cert->keyType = eccKey ? ECC_KEY : (ed25519Key ? ED25519_KEY : RSA_KEY);
-
-#ifdef WOLFSSL_SMALL_STACK
- der = (DerCert*)XMALLOC(sizeof(DerCert), cert->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (der == NULL)
- return MEMORY_E;
-#endif
-
- ret = EncodeCertReq(cert, der, rsaKey, eccKey, ed25519Key);
-
- if (ret == 0) {
- if (der->total + MAX_SEQ_SZ * 2 > (int)derSz)
- ret = BUFFER_E;
- else
- ret = cert->bodySz = WriteCertReqBody(der, derBuffer);
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(der, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return ret;
-}
-
-int wc_MakeCertReq_ex(Cert* cert, byte* derBuffer, word32 derSz, int keyType,
- void* key)
-{
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
-
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
-
- return MakeCertReq(cert, derBuffer, derSz, rsaKey, eccKey, ed25519Key);
-}
-
-int wc_MakeCertReq(Cert* cert, byte* derBuffer, word32 derSz,
- RsaKey* rsaKey, ecc_key* eccKey)
-{
- return MakeCertReq(cert, derBuffer, derSz, rsaKey, eccKey, NULL);
-}
-#endif /* WOLFSSL_CERT_REQ */
-
-
-static int SignCert(int requestSz, int sType, byte* buffer, word32 buffSz,
- RsaKey* rsaKey, ecc_key* eccKey, ed25519_key* ed25519Key,
- WC_RNG* rng)
-{
- int sigSz = 0;
- void* heap = NULL;
- CertSignCtx* certSignCtx = NULL;
-#ifndef WOLFSSL_ASYNC_CRYPT
- CertSignCtx certSignCtx_lcl;
- certSignCtx = &certSignCtx_lcl;
- XMEMSET(certSignCtx, 0, sizeof(CertSignCtx));
-#endif
-
- if (requestSz < 0)
- return requestSz;
-
- /* locate ctx */
- if (rsaKey) {
- #ifndef NO_RSA
- #ifdef WOLFSSL_ASYNC_CRYPT
- certSignCtx = &rsaKey->certSignCtx;
- #endif
- heap = rsaKey->heap;
- #else
- return NOT_COMPILED_IN;
- #endif /* NO_RSA */
- }
- else if (eccKey) {
- #ifdef HAVE_ECC
- #ifdef WOLFSSL_ASYNC_CRYPT
- certSignCtx = &eccKey->certSignCtx;
- #endif
- heap = eccKey->heap;
- #else
- return NOT_COMPILED_IN;
- #endif /* HAVE_ECC */
- }
-
-#ifdef WOLFSSL_ASYNC_CRYPT
- if (certSignCtx == NULL) {
- return BAD_FUNC_ARG;
- }
-#endif
-
- if (certSignCtx->sig == NULL) {
- certSignCtx->sig = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ, heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (certSignCtx->sig == NULL)
- return MEMORY_E;
- }
-
- sigSz = MakeSignature(certSignCtx, buffer, requestSz, certSignCtx->sig,
- MAX_ENCODED_SIG_SZ, rsaKey, eccKey, ed25519Key, rng, sType, heap);
- if (sigSz == WC_PENDING_E) {
- /* Not free'ing certSignCtx->sig here because it could still be in use
- * with async operations. */
- return sigSz;
- }
-
- if (sigSz >= 0) {
- if (requestSz + MAX_SEQ_SZ * 2 + sigSz > (int)buffSz)
- sigSz = BUFFER_E;
- else
- sigSz = AddSignature(buffer, requestSz, certSignCtx->sig, sigSz,
- sType);
- }
-
- XFREE(certSignCtx->sig, heap, DYNAMIC_TYPE_TMP_BUFFER);
- certSignCtx->sig = NULL;
-
- return sigSz;
-}
-
-int wc_SignCert_ex(int requestSz, int sType, byte* buffer, word32 buffSz,
- int keyType, void* key, WC_RNG* rng)
-{
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
-
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
-
- return SignCert(requestSz, sType, buffer, buffSz, rsaKey, eccKey,
- ed25519Key, rng);
-}
-
-int wc_SignCert(int requestSz, int sType, byte* buffer, word32 buffSz,
- RsaKey* rsaKey, ecc_key* eccKey, WC_RNG* rng)
-{
- return SignCert(requestSz, sType, buffer, buffSz, rsaKey, eccKey, NULL,
- rng);
-}
-
-int wc_MakeSelfCert(Cert* cert, byte* buffer, word32 buffSz,
- RsaKey* key, WC_RNG* rng)
-{
- int ret;
-
- ret = wc_MakeCert(cert, buffer, buffSz, key, NULL, rng);
- if (ret < 0)
- return ret;
-
- return wc_SignCert(cert->bodySz, cert->sigType,
- buffer, buffSz, key, NULL, rng);
-}
-
-
-#ifdef WOLFSSL_CERT_EXT
-
-/* Set KID from public key */
-static int SetKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey,
- byte *ntruKey, word16 ntruKeySz,
- ed25519_key* ed25519Key, int kid_type)
-{
- byte *buffer;
- int bufferSz, ret;
-
- if (cert == NULL ||
- (rsakey == NULL && eckey == NULL && ntruKey == NULL &&
- ed25519Key == NULL) ||
- (kid_type != SKID_TYPE && kid_type != AKID_TYPE))
- return BAD_FUNC_ARG;
-
- buffer = (byte *)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (buffer == NULL)
- return MEMORY_E;
-
- /* Public Key */
- bufferSz = -1;
-#ifndef NO_RSA
- /* RSA public key */
- if (rsakey != NULL)
- bufferSz = SetRsaPublicKey(buffer, rsakey, MAX_PUBLIC_KEY_SZ, 0);
-#endif
-#ifdef HAVE_ECC
- /* ECC public key */
- if (eckey != NULL)
- bufferSz = SetEccPublicKey(buffer, eckey, 0);
-#endif
-#ifdef HAVE_NTRU
- /* NTRU public key */
- if (ntruKey != NULL) {
- bufferSz = MAX_PUBLIC_KEY_SZ;
- ret = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(
- ntruKeySz, ntruKey, (word16 *)(&bufferSz), buffer);
- if (ret != NTRU_OK)
- bufferSz = -1;
- }
-#else
- (void)ntruKeySz;
-#endif
-#ifdef HAVE_ED25519
- /* ED25519 public key */
- if (ed25519Key != NULL)
- bufferSz = SetEd25519PublicKey(buffer, ed25519Key, 0);
-#endif
-
- if (bufferSz <= 0) {
- XFREE(buffer, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return PUBLIC_KEY_E;
- }
-
- /* Compute SKID by hashing public key */
-#ifdef NO_SHA
- if (kid_type == SKID_TYPE) {
- ret = wc_Sha256Hash(buffer, bufferSz, cert->skid);
- cert->skidSz = WC_SHA256_DIGEST_SIZE;
- }
- else if (kid_type == AKID_TYPE) {
- ret = wc_Sha256Hash(buffer, bufferSz, cert->akid);
- cert->akidSz = WC_SHA256_DIGEST_SIZE;
- }
- else
- ret = BAD_FUNC_ARG;
-#else /* NO_SHA */
- if (kid_type == SKID_TYPE) {
- ret = wc_ShaHash(buffer, bufferSz, cert->skid);
- cert->skidSz = WC_SHA_DIGEST_SIZE;
- }
- else if (kid_type == AKID_TYPE) {
- ret = wc_ShaHash(buffer, bufferSz, cert->akid);
- cert->akidSz = WC_SHA_DIGEST_SIZE;
- }
- else
- ret = BAD_FUNC_ARG;
-#endif /* NO_SHA */
-
- XFREE(buffer, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
-}
-
-int wc_SetSubjectKeyIdFromPublicKey_ex(Cert *cert, int keyType, void* key)
-{
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
-
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
-
- return SetKeyIdFromPublicKey(cert, rsaKey, eccKey, NULL, 0, ed25519Key,
- SKID_TYPE);
-}
-
-/* Set SKID from RSA or ECC public key */
-int wc_SetSubjectKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey)
-{
- return SetKeyIdFromPublicKey(cert, rsakey, eckey, NULL, 0, NULL, SKID_TYPE);
-}
-
-#ifdef HAVE_NTRU
-/* Set SKID from NTRU public key */
-int wc_SetSubjectKeyIdFromNtruPublicKey(Cert *cert,
- byte *ntruKey, word16 ntruKeySz)
-{
- return SetKeyIdFromPublicKey(cert, NULL,NULL,ntruKey, ntruKeySz, NULL,
- SKID_TYPE);
-}
-#endif
-
-int wc_SetAuthKeyIdFromPublicKey_ex(Cert *cert, int keyType, void* key)
-{
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
-
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
-
- return SetKeyIdFromPublicKey(cert, rsaKey, eccKey, NULL, 0, ed25519Key,
- AKID_TYPE);
-}
-
-/* Set SKID from RSA or ECC public key */
-int wc_SetAuthKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey)
-{
- return SetKeyIdFromPublicKey(cert, rsakey, eckey, NULL, 0, NULL, AKID_TYPE);
-}
-
-
-#ifndef NO_FILESYSTEM
-
-/* Set SKID from public key file in PEM */
-int wc_SetSubjectKeyId(Cert *cert, const char* file)
-{
- int ret, derSz;
- byte* der;
- word32 idx;
- RsaKey *rsakey = NULL;
- ecc_key *eckey = NULL;
-
- if (cert == NULL || file == NULL)
- return BAD_FUNC_ARG;
-
- der = (byte*)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap, DYNAMIC_TYPE_CERT);
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetSubjectKeyId memory Problem");
- return MEMORY_E;
- }
-
- derSz = wc_PemPubKeyToDer(file, der, MAX_PUBLIC_KEY_SZ);
- if (derSz <= 0)
- {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return derSz;
- }
-
- /* Load PubKey in internal structure */
-#ifndef NO_RSA
- rsakey = (RsaKey*) XMALLOC(sizeof(RsaKey), cert->heap, DYNAMIC_TYPE_RSA);
- if (rsakey == NULL) {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
-
- if (wc_InitRsaKey(rsakey, cert->heap) != 0) {
- WOLFSSL_MSG("wc_InitRsaKey failure");
- XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
-
- idx = 0;
- ret = wc_RsaPublicKeyDecode(der, &idx, rsakey, derSz);
- if (ret != 0)
-#endif
- {
-#ifndef NO_RSA
- WOLFSSL_MSG("wc_RsaPublicKeyDecode failed");
- wc_FreeRsaKey(rsakey);
- XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
- rsakey = NULL;
-#endif
-#ifdef HAVE_ECC
- /* Check to load ecc public key */
- eckey = (ecc_key*) XMALLOC(sizeof(ecc_key), cert->heap,
- DYNAMIC_TYPE_ECC);
- if (eckey == NULL) {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
-
- if (wc_ecc_init(eckey) != 0) {
- WOLFSSL_MSG("wc_ecc_init failure");
- wc_ecc_free(eckey);
- XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
-
- idx = 0;
- ret = wc_EccPublicKeyDecode(der, &idx, eckey, derSz);
- if (ret != 0) {
- WOLFSSL_MSG("wc_EccPublicKeyDecode failed");
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- wc_ecc_free(eckey);
- XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
- return PUBLIC_KEY_E;
- }
-#else
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return PUBLIC_KEY_E;
-#endif /* HAVE_ECC */
- }
-
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
-
- ret = wc_SetSubjectKeyIdFromPublicKey(cert, rsakey, eckey);
-
-#ifndef NO_RSA
- wc_FreeRsaKey(rsakey);
- XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
-#endif
-#ifdef HAVE_ECC
- wc_ecc_free(eckey);
- XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
-#endif
- return ret;
-}
-
-#endif /* NO_FILESYSTEM */
-
-/* Set AKID from certificate contains in buffer (DER encoded) */
-int wc_SetAuthKeyIdFromCert(Cert *cert, const byte *der, int derSz)
-{
- int ret;
-
-#ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
-#else
- DecodedCert decoded[1];
-#endif
-
- if (cert == NULL || der == NULL || derSz <= 0)
- return BAD_FUNC_ARG;
-
-#ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert),
- cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
-#endif
-
- /* decode certificate and get SKID that will be AKID of current cert */
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCert(decoded, CERT_TYPE, NO_VERIFY, 0);
- if (ret != 0) {
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
-
- /* Subject Key Id not found !! */
- if (decoded->extSubjKeyIdSet == 0) {
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ASN_NO_SKID;
- }
-
- /* SKID invalid size */
- if (sizeof(cert->akid) < sizeof(decoded->extSubjKeyId)) {
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
-
- /* Put the SKID of CA to AKID of certificate */
- XMEMCPY(cert->akid, decoded->extSubjKeyId, KEYID_SIZE);
- cert->akidSz = KEYID_SIZE;
-
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
-
- return 0;
-}
-
-
-#ifndef NO_FILESYSTEM
-
-/* Set AKID from certificate file in PEM */
-int wc_SetAuthKeyId(Cert *cert, const char* file)
-{
- int ret;
- int derSz;
- byte* der;
-
- if (cert == NULL || file == NULL)
- return BAD_FUNC_ARG;
-
- der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetAuthKeyId OOF Problem");
- return MEMORY_E;
- }
-
- derSz = wc_PemCertToDer(file, der, EIGHTK_BUF);
- if (derSz <= 0)
- {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return derSz;
- }
-
- ret = wc_SetAuthKeyIdFromCert(cert, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
-
- return ret;
-}
-
-#endif /* NO_FILESYSTEM */
-
-/* Set KeyUsage from human readable string */
-int wc_SetKeyUsage(Cert *cert, const char *value)
-{
- int ret = 0;
- char *token, *str, *ptr;
- word32 len;
-
- if (cert == NULL || value == NULL)
- return BAD_FUNC_ARG;
-
- cert->keyUsage = 0;
-
- len = (word32)XSTRLEN(value);
- str = (char*)XMALLOC(len+1, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (str == NULL)
- return MEMORY_E;
-
- XSTRNCPY(str, value, len);
- str[len] = '\0';
-
- /* parse value, and set corresponding Key Usage value */
- if ((token = XSTRTOK(str, ",", &ptr)) == NULL) {
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return KEYUSAGE_E;
- }
- while (token != NULL)
- {
- len = (word32)XSTRLEN(token);
-
- if (!XSTRNCASECMP(token, "digitalSignature", len))
- cert->keyUsage |= KEYUSE_DIGITAL_SIG;
- else if (!XSTRNCASECMP(token, "nonRepudiation", len) ||
- !XSTRNCASECMP(token, "contentCommitment", len))
- cert->keyUsage |= KEYUSE_CONTENT_COMMIT;
- else if (!XSTRNCASECMP(token, "keyEncipherment", len))
- cert->keyUsage |= KEYUSE_KEY_ENCIPHER;
- else if (!XSTRNCASECMP(token, "dataEncipherment", len))
- cert->keyUsage |= KEYUSE_DATA_ENCIPHER;
- else if (!XSTRNCASECMP(token, "keyAgreement", len))
- cert->keyUsage |= KEYUSE_KEY_AGREE;
- else if (!XSTRNCASECMP(token, "keyCertSign", len))
- cert->keyUsage |= KEYUSE_KEY_CERT_SIGN;
- else if (!XSTRNCASECMP(token, "cRLSign", len))
- cert->keyUsage |= KEYUSE_CRL_SIGN;
- else if (!XSTRNCASECMP(token, "encipherOnly", len))
- cert->keyUsage |= KEYUSE_ENCIPHER_ONLY;
- else if (!XSTRNCASECMP(token, "decipherOnly", len))
- cert->keyUsage |= KEYUSE_DECIPHER_ONLY;
- else {
- ret = KEYUSAGE_E;
- break;
- }
-
- token = XSTRTOK(NULL, ",", &ptr);
- }
-
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
-}
-
-/* Set ExtendedKeyUsage from human readable string */
-int wc_SetExtKeyUsage(Cert *cert, const char *value)
-{
- int ret = 0;
- char *token, *str, *ptr;
- word32 len;
-
- if (cert == NULL || value == NULL)
- return BAD_FUNC_ARG;
-
- cert->extKeyUsage = 0;
-
- len = (word32)XSTRLEN(value);
- str = (char*)XMALLOC(len+1, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (str == NULL)
- return MEMORY_E;
-
- XSTRNCPY(str, value, len);
- str[len] = '\0';
-
- /* parse value, and set corresponding Key Usage value */
- if ((token = XSTRTOK(str, ",", &ptr)) == NULL) {
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return EXTKEYUSAGE_E;
- }
-
- while (token != NULL)
- {
- len = (word32)XSTRLEN(token);
-
- if (!XSTRNCASECMP(token, "any", len))
- cert->extKeyUsage |= EXTKEYUSE_ANY;
- else if (!XSTRNCASECMP(token, "serverAuth", len))
- cert->extKeyUsage |= EXTKEYUSE_SERVER_AUTH;
- else if (!XSTRNCASECMP(token, "clientAuth", len))
- cert->extKeyUsage |= EXTKEYUSE_CLIENT_AUTH;
- else if (!XSTRNCASECMP(token, "codeSigning", len))
- cert->extKeyUsage |= EXTKEYUSE_CODESIGN;
- else if (!XSTRNCASECMP(token, "emailProtection", len))
- cert->extKeyUsage |= EXTKEYUSE_EMAILPROT;
- else if (!XSTRNCASECMP(token, "timeStamping", len))
- cert->extKeyUsage |= EXTKEYUSE_TIMESTAMP;
- else if (!XSTRNCASECMP(token, "OCSPSigning", len))
- cert->extKeyUsage |= EXTKEYUSE_OCSP_SIGN;
- else {
- ret = EXTKEYUSAGE_E;
- break;
- }
-
- token = XSTRTOK(NULL, ",", &ptr);
- }
-
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
-}
-
-#ifdef WOLFSSL_EKU_OID
-/*
- * cert structure to set EKU oid in
- * oid the oid in byte representation
- * sz size of oid buffer
- * idx index of array to place oid
- *
- * returns 0 on success
- */
-int wc_SetExtKeyUsageOID(Cert *cert, const char *in, word32 sz, byte idx,
- void* heap)
-{
- byte oid[MAX_OID_SZ];
- word32 oidSz = MAX_OID_SZ;
-
- if (idx >= CTC_MAX_EKU_NB || sz >= CTC_MAX_EKU_OID_SZ) {
- WOLFSSL_MSG("Either idx or sz was too large");
- return BAD_FUNC_ARG;
- }
-
- if (EncodePolicyOID(oid, &oidSz, in, heap) != 0) {
- return BUFFER_E;
- }
-
- XMEMCPY(cert->extKeyUsageOID[idx], oid, oidSz);
- cert->extKeyUsageOIDSz[idx] = oidSz;
- cert->extKeyUsage |= EXTKEYUSE_USER;
-
- return 0;
-}
-#endif /* WOLFSSL_EKU_OID */
-#endif /* WOLFSSL_CERT_EXT */
-
-
-#ifdef WOLFSSL_ALT_NAMES
-
-/* Set Alt Names from der cert, return 0 on success */
-static int SetAltNamesFromCert(Cert* cert, const byte* der, int derSz)
-{
- int ret;
-#ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
-#else
- DecodedCert decoded[1];
-#endif
-
- if (derSz < 0)
- return derSz;
-
-#ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), cert->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
-#endif
-
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
-
- if (ret < 0) {
- WOLFSSL_MSG("ParseCertRelative error");
- }
- else if (decoded->extensions) {
- byte b;
- int length;
- word32 maxExtensionsIdx;
-
- decoded->srcIdx = decoded->extensionsIdx;
- b = decoded->source[decoded->srcIdx++];
-
- if (b != ASN_EXTENSIONS) {
- ret = ASN_PARSE_E;
- }
- else if (GetLength(decoded->source, &decoded->srcIdx, &length,
- decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- }
- else if (GetSequence(decoded->source, &decoded->srcIdx, &length,
- decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- }
- else {
- maxExtensionsIdx = decoded->srcIdx + length;
-
- while (decoded->srcIdx < maxExtensionsIdx) {
- word32 oid;
- word32 startIdx = decoded->srcIdx;
- word32 tmpIdx;
-
- if (GetSequence(decoded->source, &decoded->srcIdx, &length,
- decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- break;
- }
-
- tmpIdx = decoded->srcIdx;
- decoded->srcIdx = startIdx;
-
- if (GetAlgoId(decoded->source, &decoded->srcIdx, &oid,
- oidCertExtType, decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- break;
- }
-
- if (oid == ALT_NAMES_OID) {
- cert->altNamesSz = length + (tmpIdx - startIdx);
-
- if (cert->altNamesSz < (int)sizeof(cert->altNames))
- XMEMCPY(cert->altNames, &decoded->source[startIdx],
- cert->altNamesSz);
- else {
- cert->altNamesSz = 0;
- WOLFSSL_MSG("AltNames extensions too big");
- ret = ALT_NAME_E;
- break;
- }
- }
- decoded->srcIdx = tmpIdx + length;
- }
- }
- }
-
- FreeDecodedCert(decoded);
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return ret < 0 ? ret : 0;
-}
-
-
-/* Set Dates from der cert, return 0 on success */
-static int SetDatesFromCert(Cert* cert, const byte* der, int derSz)
-{
- int ret;
-#ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
-#else
- DecodedCert decoded[1];
-#endif
-
- WOLFSSL_ENTER("SetDatesFromCert");
- if (derSz < 0)
- return derSz;
-
-#ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), cert->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
-#endif
-
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
-
- if (ret < 0) {
- WOLFSSL_MSG("ParseCertRelative error");
- }
- else if (decoded->beforeDate == NULL || decoded->afterDate == NULL) {
- WOLFSSL_MSG("Couldn't extract dates");
- ret = -1;
- }
- else if (decoded->beforeDateLen > MAX_DATE_SIZE ||
- decoded->afterDateLen > MAX_DATE_SIZE) {
- WOLFSSL_MSG("Bad date size");
- ret = -1;
- }
- else {
- XMEMCPY(cert->beforeDate, decoded->beforeDate, decoded->beforeDateLen);
- XMEMCPY(cert->afterDate, decoded->afterDate, decoded->afterDateLen);
-
- cert->beforeDateSz = decoded->beforeDateLen;
- cert->afterDateSz = decoded->afterDateLen;
- }
-
- FreeDecodedCert(decoded);
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return ret < 0 ? ret : 0;
-}
-
-#endif /* WOLFSSL_ALT_NAMES */
-
-/* Set cn name from der buffer, return 0 on success */
-static int SetNameFromCert(CertName* cn, const byte* der, int derSz)
-{
- int ret, sz;
-#ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
-#else
- DecodedCert decoded[1];
-#endif
-
- if (derSz < 0)
- return derSz;
-
-#ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), NULL,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
-#endif
-
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
-
- if (ret < 0) {
- WOLFSSL_MSG("ParseCertRelative error");
- }
- else {
- if (decoded->subjectCN) {
- sz = (decoded->subjectCNLen < CTC_NAME_SIZE) ? decoded->subjectCNLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->commonName, decoded->subjectCN, CTC_NAME_SIZE);
- cn->commonName[sz] = '\0';
- cn->commonNameEnc = decoded->subjectCNEnc;
- }
- if (decoded->subjectC) {
- sz = (decoded->subjectCLen < CTC_NAME_SIZE) ? decoded->subjectCLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->country, decoded->subjectC, CTC_NAME_SIZE);
- cn->country[sz] = '\0';
- cn->countryEnc = decoded->subjectCEnc;
- }
- if (decoded->subjectST) {
- sz = (decoded->subjectSTLen < CTC_NAME_SIZE) ? decoded->subjectSTLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->state, decoded->subjectST, CTC_NAME_SIZE);
- cn->state[sz] = '\0';
- cn->stateEnc = decoded->subjectSTEnc;
- }
- if (decoded->subjectL) {
- sz = (decoded->subjectLLen < CTC_NAME_SIZE) ? decoded->subjectLLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->locality, decoded->subjectL, CTC_NAME_SIZE);
- cn->locality[sz] = '\0';
- cn->localityEnc = decoded->subjectLEnc;
- }
- if (decoded->subjectO) {
- sz = (decoded->subjectOLen < CTC_NAME_SIZE) ? decoded->subjectOLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->org, decoded->subjectO, CTC_NAME_SIZE);
- cn->org[sz] = '\0';
- cn->orgEnc = decoded->subjectOEnc;
- }
- if (decoded->subjectOU) {
- sz = (decoded->subjectOULen < CTC_NAME_SIZE) ? decoded->subjectOULen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->unit, decoded->subjectOU, CTC_NAME_SIZE);
- cn->unit[sz] = '\0';
- cn->unitEnc = decoded->subjectOUEnc;
- }
- if (decoded->subjectSN) {
- sz = (decoded->subjectSNLen < CTC_NAME_SIZE) ? decoded->subjectSNLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->sur, decoded->subjectSN, CTC_NAME_SIZE);
- cn->sur[sz] = '\0';
- cn->surEnc = decoded->subjectSNEnc;
- }
- if (decoded->subjectEmail) {
- sz = (decoded->subjectEmailLen < CTC_NAME_SIZE)
- ? decoded->subjectEmailLen : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->email, decoded->subjectEmail, CTC_NAME_SIZE);
- cn->email[sz] = '\0';
- }
- }
-
- FreeDecodedCert(decoded);
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return ret < 0 ? ret : 0;
-}
-
-
-#ifndef NO_FILESYSTEM
-
-/* Set cert issuer from issuerFile in PEM */
-int wc_SetIssuer(Cert* cert, const char* issuerFile)
-{
- int ret;
- int derSz;
- byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
-
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetIssuer OOF Problem");
- return MEMORY_E;
- }
- derSz = wc_PemCertToDer(issuerFile, der, EIGHTK_BUF);
- cert->selfSigned = 0;
- ret = SetNameFromCert(&cert->issuer, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
-
- return ret;
-}
-
-
-/* Set cert subject from subjectFile in PEM */
-int wc_SetSubject(Cert* cert, const char* subjectFile)
-{
- int ret;
- int derSz;
- byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
-
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetSubject OOF Problem");
- return MEMORY_E;
- }
- derSz = wc_PemCertToDer(subjectFile, der, EIGHTK_BUF);
- ret = SetNameFromCert(&cert->subject, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
-
- return ret;
-}
-
-
-#ifdef WOLFSSL_ALT_NAMES
-
-/* Set alt names from file in PEM */
-int wc_SetAltNames(Cert* cert, const char* file)
-{
- int ret;
- int derSz;
- byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
-
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetAltNames OOF Problem");
- return MEMORY_E;
- }
- derSz = wc_PemCertToDer(file, der, EIGHTK_BUF);
- ret = SetAltNamesFromCert(cert, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
-
- return ret;
-}
-
-#endif /* WOLFSSL_ALT_NAMES */
-
-#endif /* NO_FILESYSTEM */
-
-/* Set cert issuer from DER buffer */
-int wc_SetIssuerBuffer(Cert* cert, const byte* der, int derSz)
-{
- cert->selfSigned = 0;
- return SetNameFromCert(&cert->issuer, der, derSz);
-}
-
-
-/* Set cert subject from DER buffer */
-int wc_SetSubjectBuffer(Cert* cert, const byte* der, int derSz)
-{
- return SetNameFromCert(&cert->subject, der, derSz);
-}
-
-
-#ifdef WOLFSSL_ALT_NAMES
-
-/* Set cert alt names from DER buffer */
-int wc_SetAltNamesBuffer(Cert* cert, const byte* der, int derSz)
-{
- return SetAltNamesFromCert(cert, der, derSz);
-}
-
-/* Set cert dates from DER buffer */
-int wc_SetDatesBuffer(Cert* cert, const byte* der, int derSz)
-{
- return SetDatesFromCert(cert, der, derSz);
-}
-
-#endif /* WOLFSSL_ALT_NAMES */
-
-#endif /* WOLFSSL_CERT_GEN */
-
-
-#ifdef HAVE_ECC
-
-/* Der Encode r & s ints into out, outLen is (in/out) size */
-int StoreECC_DSA_Sig(byte* out, word32* outLen, mp_int* r, mp_int* s)
-{
- word32 idx = 0;
- int rSz; /* encoding size */
- int sSz;
- word32 headerSz = 4; /* 2*ASN_TAG + 2*LEN(ENUM) */
-
- /* If the leading bit on the INTEGER is a 1, add a leading zero */
- int rLeadingZero = mp_leading_bit(r);
- int sLeadingZero = mp_leading_bit(s);
- int rLen = mp_unsigned_bin_size(r); /* big int size */
- int sLen = mp_unsigned_bin_size(s);
-
- if (*outLen < (rLen + rLeadingZero + sLen + sLeadingZero +
- headerSz + 2)) /* SEQ_TAG + LEN(ENUM) */
- return BUFFER_E;
-
- idx = SetSequence(rLen + rLeadingZero + sLen+sLeadingZero + headerSz, out);
-
- /* store r */
- rSz = SetASNIntMP(r, -1, &out[idx]);
- if (rSz < 0)
- return rSz;
- idx += rSz;
-
- /* store s */
- sSz = SetASNIntMP(s, -1, &out[idx]);
- if (sSz < 0)
- return sSz;
- idx += sSz;
-
- *outLen = idx;
-
- return 0;
-}
-
-
-/* Der Decode ECC-DSA Signature, r & s stored as big ints */
-int DecodeECC_DSA_Sig(const byte* sig, word32 sigLen, mp_int* r, mp_int* s)
-{
- word32 idx = 0;
- int len = 0;
-
- if (GetSequence(sig, &idx, &len, sigLen) < 0) {
- return ASN_ECC_KEY_E;
- }
-
- if ((word32)len > (sigLen - idx)) {
- return ASN_ECC_KEY_E;
- }
-
- if (GetInt(r, sig, &idx, sigLen) < 0) {
- return ASN_ECC_KEY_E;
- }
-
- if (GetInt(s, sig, &idx, sigLen) < 0) {
- return ASN_ECC_KEY_E;
- }
-
- return 0;
-}
-
-
-int wc_EccPrivateKeyDecode(const byte* input, word32* inOutIdx, ecc_key* key,
- word32 inSz)
-{
- word32 oidSum;
- int version, length;
- int privSz, pubSz = 0;
- byte b;
- int ret = 0;
- int curve_id = ECC_CURVE_DEF;
-#ifdef WOLFSSL_SMALL_STACK
- byte* priv;
- byte* pub;
-#else
- byte priv[ECC_MAXSIZE+1];
- byte pub[2*(ECC_MAXSIZE+1)]; /* public key has two parts plus header */
-#endif
- byte* pubData = NULL;
-
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
-
- if (*inOutIdx >= inSz)
- return ASN_PARSE_E;
-
- b = input[*inOutIdx];
- *inOutIdx += 1;
-
- /* priv type */
- if (b != 4 && b != 6 && b != 7)
- return ASN_PARSE_E;
-
- if (GetLength(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (length > ECC_MAXSIZE)
- return BUFFER_E;
-
-#ifdef WOLFSSL_SMALL_STACK
- priv = (byte*)XMALLOC(ECC_MAXSIZE+1, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (priv == NULL)
- return MEMORY_E;
-
- pub = (byte*)XMALLOC(2*(ECC_MAXSIZE+1), key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL) {
- XFREE(priv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-#endif
-
- /* priv key */
- privSz = length;
- XMEMCPY(priv, &input[*inOutIdx], privSz);
- *inOutIdx += length;
-
- if (ret == 0 && (*inOutIdx + 1) < inSz) {
- /* prefix 0, may have */
- b = input[*inOutIdx];
- if (b == ECC_PREFIX_0) {
- *inOutIdx += 1;
-
- if (GetLength(input, inOutIdx, &length, inSz) <= 0)
- ret = ASN_PARSE_E;
- else {
- ret = GetObjectId(input, inOutIdx, &oidSum, oidIgnoreType,
- inSz);
- if (ret == 0) {
- if ((ret = CheckCurve(oidSum)) < 0)
- ret = ECC_CURVE_OID_E;
- else {
- curve_id = ret;
- ret = 0;
- }
- }
- }
- }
- }
-
- if (ret == 0 && (*inOutIdx + 1) < inSz) {
- /* prefix 1 */
- b = input[*inOutIdx];
- *inOutIdx += 1;
-
- if (b != ECC_PREFIX_1) {
- ret = ASN_ECC_KEY_E;
- }
- else if (GetLength(input, inOutIdx, &length, inSz) <= 0) {
- ret = ASN_PARSE_E;
- }
- else {
- /* key header */
- ret = CheckBitString(input, inOutIdx, &length, inSz, 0, NULL);
- if (ret == 0) {
- /* pub key */
- pubSz = length;
- if (pubSz < 2*(ECC_MAXSIZE+1)) {
- XMEMCPY(pub, &input[*inOutIdx], pubSz);
- *inOutIdx += length;
- pubData = pub;
- }
- else
- ret = BUFFER_E;
- }
- }
- }
-
- if (ret == 0) {
- ret = wc_ecc_import_private_key_ex(priv, privSz, pubData, pubSz, key,
- curve_id);
- }
-
-#ifdef WOLFSSL_SMALL_STACK
- XFREE(priv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
- return ret;
-}
-
-
-#ifdef WOLFSSL_CUSTOM_CURVES
-static void ByteToHex(byte n, char* str)
-{
- static const char hexChar[] = { '0', '1', '2', '3', '4', '5', '6', '7',
- '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
-
- str[0] = hexChar[n >> 4];
- str[1] = hexChar[n & 0xf];
-}
-
-/* returns 0 on success */
-static int ASNToHexString(const byte* input, word32* inOutIdx, char** out,
- word32 inSz, void* heap, int heapType)
-{
- int len;
- int i;
- char* str;
-
- if (*inOutIdx >= inSz) {
- return BUFFER_E;
- }
-
- if (input[*inOutIdx] == ASN_INTEGER) {
- if (GetASNInt(input, inOutIdx, &len, inSz) < 0)
- return ASN_PARSE_E;
- }
- else {
- if (GetOctetString(input, inOutIdx, &len, inSz) < 0)
- return ASN_PARSE_E;
- }
-
- str = (char*)XMALLOC(len * 2 + 1, heap, heapType);
- for (i=0; i<len; i++)
- ByteToHex(input[*inOutIdx + i], str + i*2);
- str[len*2] = '\0';
-
- *inOutIdx += len;
- *out = str;
-
- return 0;
-}
-#endif
-
-int wc_EccPublicKeyDecode(const byte* input, word32* inOutIdx,
- ecc_key* key, word32 inSz)
-{
- int length;
- int ret;
- int curve_id = ECC_CURVE_DEF;
- word32 oidSum;
-
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- ret = SkipObjectId(input, inOutIdx, inSz);
- if (ret != 0)
- return ret;
-
- if (*inOutIdx >= inSz) {
- return BUFFER_E;
- }
-
- if (input[*inOutIdx] == (ASN_SEQUENCE | ASN_CONSTRUCTED)) {
-#ifdef WOLFSSL_CUSTOM_CURVES
- ecc_set_type* curve;
- int len;
- char* point;
-
- ret = 0;
-
- curve = (ecc_set_type*)XMALLOC(sizeof(*curve), key->heap,
- DYNAMIC_TYPE_ECC_BUFFER);
- if (curve == NULL)
- ret = MEMORY_E;
-
- if (ret == 0) {
- XMEMSET(curve, 0, sizeof(*curve));
- curve->name = "Custom";
- curve->id = ECC_CURVE_CUSTOM;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- ret = ASN_PARSE_E;
- }
-
- if (ret == 0) {
- GetInteger7Bit(input, inOutIdx, inSz);
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- ret = ASN_PARSE_E;
- }
- if (ret == 0) {
- SkipObjectId(input, inOutIdx, inSz);
- ret = ASNToHexString(input, inOutIdx, (char**)&curve->prime, inSz,
- key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- }
- if (ret == 0) {
- curve->size = (int)XSTRLEN(curve->prime) / 2;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- ret = ASN_PARSE_E;
- }
- if (ret == 0) {
- ret = ASNToHexString(input, inOutIdx, (char**)&curve->Af, inSz,
- key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- }
- if (ret == 0) {
- ret = ASNToHexString(input, inOutIdx, (char**)&curve->Bf, inSz,
- key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- }
- if (ret == 0) {
- if (*inOutIdx < inSz && input[*inOutIdx] == ASN_BIT_STRING) {
- len = 0;
- ret = GetASNHeader(input, ASN_BIT_STRING, inOutIdx, &len, inSz);
- *inOutIdx += len;
- }
- }
- if (ret == 0) {
- ret = ASNToHexString(input, inOutIdx, (char**)&point, inSz,
- key->heap, DYNAMIC_TYPE_ECC_BUFFER);
-
- /* sanity check that point buffer is not smaller than the expected
- * size to hold ( 0 4 || Gx || Gy )
- * where Gx and Gy are each the size of curve->size * 2 */
- if (ret == 0 && (int)XSTRLEN(point) < (curve->size * 4) + 2) {
- XFREE(point, key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- ret = BUFFER_E;
- }
- }
- if (ret == 0) {
- curve->Gx = (const char*)XMALLOC(curve->size * 2 + 2, key->heap,
- DYNAMIC_TYPE_ECC_BUFFER);
- curve->Gy = (const char*)XMALLOC(curve->size * 2 + 2, key->heap,
- DYNAMIC_TYPE_ECC_BUFFER);
- if (curve->Gx == NULL || curve->Gy == NULL) {
- XFREE(point, key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- ret = MEMORY_E;
- }
- }
- if (ret == 0) {
- XMEMCPY((char*)curve->Gx, point + 2, curve->size * 2);
- XMEMCPY((char*)curve->Gy, point + curve->size * 2 + 2,
- curve->size * 2);
- ((char*)curve->Gx)[curve->size * 2] = '\0';
- ((char*)curve->Gy)[curve->size * 2] = '\0';
- XFREE(point, key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- ret = ASNToHexString(input, inOutIdx, (char**)&curve->order, inSz,
- key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- }
- if (ret == 0) {
- curve->cofactor = GetInteger7Bit(input, inOutIdx, inSz);
-
- curve->oid = NULL;
- curve->oidSz = 0;
- curve->oidSum = 0;
-
- if (wc_ecc_set_custom_curve(key, curve) < 0) {
- ret = ASN_PARSE_E;
- }
- key->deallocSet = 1;
- curve = NULL;
- }
- if (curve != NULL)
- wc_ecc_free_curve(curve, key->heap);
-
- if (ret < 0)
- return ret;
-#else
- return ASN_PARSE_E;
-#endif
- }
- else {
- /* ecc params information */
- ret = GetObjectId(input, inOutIdx, &oidSum, oidIgnoreType, inSz);
- if (ret != 0)
- return ret;
-
- /* get curve id */
- curve_id = wc_ecc_get_oid(oidSum, NULL, 0);
- if (curve_id < 0)
- return ECC_CURVE_OID_E;
- }
-
- /* key header */
- ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
- if (ret != 0)
- return ret;
-
- /* This is the raw point data compressed or uncompressed. */
- if (wc_ecc_import_x963_ex(input + *inOutIdx, inSz - *inOutIdx, key,
- curve_id) != 0) {
- return ASN_ECC_KEY_E;
- }
-
- return 0;
-}
-
-
-/* build DER formatted ECC key, include optional public key if requested,
- * return length on success, negative on error */
-static int wc_BuildEccKeyDer(ecc_key* key, byte* output, word32 inLen,
- int pubIn)
-{
- byte curve[MAX_ALGO_SZ+2];
- byte ver[MAX_VERSION_SZ];
- byte seq[MAX_SEQ_SZ];
- byte *prv = NULL, *pub = NULL;
- int ret, totalSz, curveSz, verSz;
- int privHdrSz = ASN_ECC_HEADER_SZ;
- int pubHdrSz = ASN_ECC_CONTEXT_SZ + ASN_ECC_HEADER_SZ;
-
- word32 idx = 0, prvidx = 0, pubidx = 0, curveidx = 0;
- word32 seqSz, privSz, pubSz = ECC_BUFSIZE;
-
- if (key == NULL || output == NULL || inLen == 0)
- return BAD_FUNC_ARG;
-
- /* curve */
- curve[curveidx++] = ECC_PREFIX_0;
- curveidx++ /* to put the size after computation */;
- curveSz = SetCurve(key, curve+curveidx);
- if (curveSz < 0)
- return curveSz;
- /* set computed size */
- curve[1] = (byte)curveSz;
- curveidx += curveSz;
-
- /* private */
- privSz = key->dp->size;
- prv = (byte*)XMALLOC(privSz + privHdrSz + MAX_SEQ_SZ,
- key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (prv == NULL) {
- return MEMORY_E;
- }
- prvidx += SetOctetString8Bit(key->dp->size, &prv[prvidx]);
- ret = wc_ecc_export_private_only(key, prv + prvidx, &privSz);
- if (ret < 0) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- prvidx += privSz;
-
- /* pubIn */
- if (pubIn) {
- ret = wc_ecc_export_x963(key, NULL, &pubSz);
- if (ret != LENGTH_ONLY_E) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
-
- pub = (byte*)XMALLOC(pubSz + pubHdrSz + MAX_SEQ_SZ,
- key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
-
- pub[pubidx++] = ECC_PREFIX_1;
- if (pubSz > 128) /* leading zero + extra size byte */
- pubidx += SetLength(pubSz + ASN_ECC_CONTEXT_SZ + 2, pub+pubidx);
- else /* leading zero */
- pubidx += SetLength(pubSz + ASN_ECC_CONTEXT_SZ + 1, pub+pubidx);
-
- /* SetBitString adds leading zero */
- pubidx += SetBitString(pubSz, 0, pub + pubidx);
- ret = wc_ecc_export_x963(key, pub + pubidx, &pubSz);
- if (ret != 0) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- pubidx += pubSz;
- }
-
- /* make headers */
- verSz = SetMyVersion(1, ver, FALSE);
- seqSz = SetSequence(verSz + prvidx + pubidx + curveidx, seq);
-
- totalSz = prvidx + pubidx + curveidx + verSz + seqSz;
- if (totalSz > (int)inLen) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (pubIn) {
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- }
- return BAD_FUNC_ARG;
- }
-
- /* write out */
- /* seq */
- XMEMCPY(output + idx, seq, seqSz);
- idx = seqSz;
-
- /* ver */
- XMEMCPY(output + idx, ver, verSz);
- idx += verSz;
-
- /* private */
- XMEMCPY(output + idx, prv, prvidx);
- idx += prvidx;
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-
- /* curve */
- XMEMCPY(output + idx, curve, curveidx);
- idx += curveidx;
-
- /* pubIn */
- if (pubIn) {
- XMEMCPY(output + idx, pub, pubidx);
- /* idx += pubidx; not used after write, if more data remove comment */
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- }
-
- return totalSz;
-}
-
-
-/* Write a Private ecc key, including public to DER format,
- * length on success else < 0 */
-int wc_EccKeyToDer(ecc_key* key, byte* output, word32 inLen)
-{
- return wc_BuildEccKeyDer(key, output, inLen, 1);
-}
-
-
-/* Write only private ecc key to DER format,
- * length on success else < 0 */
-int wc_EccPrivateKeyToDer(ecc_key* key, byte* output, word32 inLen)
-{
- return wc_BuildEccKeyDer(key, output, inLen, 0);
-}
-
-/* Write only private ecc key to unencrypted PKCS#8 format.
- *
- * If output is NULL, places required PKCS#8 buffer size in outLen and
- * returns LENGTH_ONLY_E.
- *
- * return length on success else < 0 */
-int wc_EccPrivateKeyToPKCS8(ecc_key* key, byte* output, word32* outLen)
-{
- int ret, tmpDerSz;
- int algoID = 0;
- word32 oidSz = 0;
- word32 pkcs8Sz = 0;
- const byte* curveOID = NULL;
- byte* tmpDer = NULL;
-
- if (key == NULL || outLen == NULL)
- return BAD_FUNC_ARG;
-
- /* set algoID, get curve OID */
- algoID = ECDSAk;
- ret = wc_ecc_get_oid(key->dp->oidSum, &curveOID, &oidSz);
- if (ret < 0)
- return ret;
-
- /* temp buffer for plain DER key */
- tmpDer = (byte*)XMALLOC(ECC_BUFSIZE, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (tmpDer == NULL)
- return MEMORY_E;
-
- XMEMSET(tmpDer, 0, ECC_BUFSIZE);
-
- tmpDerSz = wc_BuildEccKeyDer(key, tmpDer, ECC_BUFSIZE, 0);
- if (tmpDerSz < 0) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return tmpDerSz;
- }
-
- /* get pkcs8 expected output size */
- ret = wc_CreatePKCS8Key(NULL, &pkcs8Sz, tmpDer, tmpDerSz, algoID,
- curveOID, oidSz);
- if (ret != LENGTH_ONLY_E) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
-
- if (output == NULL) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- *outLen = pkcs8Sz;
- return LENGTH_ONLY_E;
-
- } else if (*outLen < pkcs8Sz) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- WOLFSSL_MSG("Input buffer too small for ECC PKCS#8 key");
- return BUFFER_E;
- }
-
- ret = wc_CreatePKCS8Key(output, &pkcs8Sz, tmpDer, tmpDerSz,
- algoID, curveOID, oidSz);
- if (ret < 0) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
-
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
-
- *outLen = ret;
- return ret;
-}
-
-#endif /* HAVE_ECC */
-
-
-#ifdef HAVE_ED25519
-
-int wc_Ed25519PrivateKeyDecode(const byte* input, word32* inOutIdx,
- ed25519_key* key, word32 inSz)
-{
- word32 oid;
- int ret, version, length, endKeyIdx, privSz, pubSz;
- const byte* priv;
- const byte* pub;
-
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
-
- if (GetSequence(input, inOutIdx, &length, inSz) >= 0) {
- endKeyIdx = *inOutIdx + length;
-
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
- if (version != 0) {
- WOLFSSL_MSG("Unrecognized version of ED25519 private key");
- return ASN_PARSE_E;
- }
-
- if (GetAlgoId(input, inOutIdx, &oid, oidKeyType, inSz) < 0)
- return ASN_PARSE_E;
- if (oid != ED25519k)
- return ASN_PARSE_E;
-
- if (GetOctetString(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetOctetString(input, inOutIdx, &privSz, inSz) < 0)
- return ASN_PARSE_E;
-
- priv = input + *inOutIdx;
- *inOutIdx += privSz;
- }
- else {
- if (GetOctetString(input, inOutIdx, &privSz, inSz) < 0)
- return ASN_PARSE_E;
-
- priv = input + *inOutIdx;
- *inOutIdx += privSz;
- endKeyIdx = *inOutIdx;
- }
-
- if (endKeyIdx == (int)*inOutIdx) {
- ret = wc_ed25519_import_private_only(priv, privSz, key);
- }
- else {
- if (GetASNHeader(input, ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1,
- inOutIdx, &length, inSz) < 0) {
- return ASN_PARSE_E;
- }
- if (GetOctetString(input, inOutIdx, &pubSz, inSz) < 0)
- return ASN_PARSE_E;
- pub = input + *inOutIdx;
- *inOutIdx += pubSz;
-
- ret = wc_ed25519_import_private_key(priv, privSz, pub, pubSz, key);
- }
- if (ret == 0 && endKeyIdx != (int)*inOutIdx)
- return ASN_PARSE_E;
-
- return ret;
-}
-
-
-int wc_Ed25519PublicKeyDecode(const byte* input, word32* inOutIdx,
- ed25519_key* key, word32 inSz)
-{
- int length;
- int ret;
-
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
-
- ret = SkipObjectId(input, inOutIdx, inSz);
- if (ret != 0)
- return ret;
-
- /* key header */
- ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
- if (ret != 0)
- return ret;
-
- /* This is the raw point data compressed or uncompressed. */
- if (wc_ed25519_import_public(input + *inOutIdx, inSz - *inOutIdx, key) != 0)
- return ASN_ECC_KEY_E;
-
- return 0;
-}
-
-
-#ifdef WOLFSSL_KEY_GEN
-
-/* build DER formatted ED25519 key,
- * return length on success, negative on error */
-static int wc_BuildEd25519KeyDer(ed25519_key* key, byte* output, word32 inLen,
- int pubOut)
-{
- byte algoArray[MAX_ALGO_SZ];
- byte ver[MAX_VERSION_SZ];
- byte seq[MAX_SEQ_SZ];
- int ret;
- word32 idx = 0, seqSz, verSz, algoSz, privSz, pubSz = 0;
-
- if (key == NULL || output == NULL || inLen == 0)
- return BAD_FUNC_ARG;
-
- if (pubOut)
- pubSz = 2 + 2 + ED25519_PUB_KEY_SIZE;
- privSz = 2 + 2 + ED25519_KEY_SIZE;
- algoSz = SetAlgoID(ED25519k, algoArray, oidKeyType, 0);
- verSz = SetMyVersion(0, ver, FALSE);
- seqSz = SetSequence(verSz + algoSz + privSz + pubSz, seq);
-
- if (seqSz + verSz + algoSz + privSz + pubSz > inLen)
- return BAD_FUNC_ARG;
-
- /* write out */
- /* seq */
- XMEMCPY(output + idx, seq, seqSz);
- idx = seqSz;
- /* ver */
- XMEMCPY(output + idx, ver, verSz);
- idx += verSz;
- /* algo */
- XMEMCPY(output + idx, algoArray, algoSz);
- idx += algoSz;
- /* privKey */
- idx += SetOctetString(2 + ED25519_KEY_SIZE, output + idx);
- idx += SetOctetString(ED25519_KEY_SIZE, output + idx);
- ret = wc_ed25519_export_private_only(key, output + idx, &privSz);
- if (ret != 0)
- return ret;
- idx += privSz;
- /* pubKey */
- if (pubOut) {
- idx += SetExplicit(1, 2 + ED25519_PUB_KEY_SIZE, output + idx);
- idx += SetOctetString(ED25519_KEY_SIZE, output + idx);
- ret = wc_ed25519_export_public(key, output + idx, &pubSz);
- if (ret != 0)
- return ret;
- idx += pubSz;
- }
-
- return idx;
-}
-
-/* Write a Private ecc key, including public to DER format,
- * length on success else < 0 */
-int wc_Ed25519KeyToDer(ed25519_key* key, byte* output, word32 inLen)
-{
- return wc_BuildEd25519KeyDer(key, output, inLen, 1);
-}
-
-
-
-/* Write only private ecc key to DER format,
- * length on success else < 0 */
-int wc_Ed25519PrivateKeyToDer(ed25519_key* key, byte* output, word32 inLen)
-{
- return wc_BuildEd25519KeyDer(key, output, inLen, 0);
-}
-
-#endif /* WOLFSSL_KEY_GEN */
-
-#endif /* HAVE_ED25519 */
-
-
-#if defined(HAVE_OCSP) || defined(HAVE_CRL)
-
-/* Get raw Date only, no processing, 0 on success */
-static int GetBasicDate(const byte* source, word32* idx, byte* date,
- byte* format, int maxIdx)
-{
- int ret, length;
- const byte *datePtr = NULL;
-
- WOLFSSL_ENTER("GetBasicDate");
-
- ret = GetDateInfo(source, idx, &datePtr, format, &length, maxIdx);
- if (ret < 0)
- return ret;
-
- XMEMCPY(date, datePtr, length);
-
- return 0;
-}
-
-#endif
-
-
-#ifdef HAVE_OCSP
-
-static int GetEnumerated(const byte* input, word32* inOutIdx, int *value)
-{
- word32 idx = *inOutIdx;
- word32 len;
-
- WOLFSSL_ENTER("GetEnumerated");
-
- *value = 0;
-
- if (input[idx++] != ASN_ENUMERATED)
- return ASN_PARSE_E;
-
- len = input[idx++];
- if (len > 4)
- return ASN_PARSE_E;
-
- while (len--) {
- *value = *value << 8 | input[idx++];
- }
-
- *inOutIdx = idx;
-
- return *value;
-}
-
-
-static int DecodeSingleResponse(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 size)
-{
- word32 idx = *ioIndex, prevIndex, oid;
- int length, wrapperSz;
- CertStatus* cs = resp->status;
- int ret;
-
- WOLFSSL_ENTER("DecodeSingleResponse");
-
- /* Outer wrapper of the SEQUENCE OF Single Responses. */
- if (GetSequence(source, &idx, &wrapperSz, size) < 0)
- return ASN_PARSE_E;
-
- prevIndex = idx;
-
- /* When making a request, we only request one status on one certificate
- * at a time. There should only be one SingleResponse */
-
- /* Wrapper around the Single Response */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-
- /* Wrapper around the CertID */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- /* Skip the hash algorithm */
- if (GetAlgoId(source, &idx, &oid, oidIgnoreType, size) < 0)
- return ASN_PARSE_E;
- /* Save reference to the hash of CN */
- ret = GetOctetString(source, &idx, &length, size);
- if (ret < 0)
- return ret;
- resp->issuerHash = source + idx;
- idx += length;
- /* Save reference to the hash of the issuer public key */
- ret = GetOctetString(source, &idx, &length, size);
- if (ret < 0)
- return ret;
- resp->issuerKeyHash = source + idx;
- idx += length;
-
- /* Get serial number */
- if (GetSerialNumber(source, &idx, cs->serial, &cs->serialSz, size) < 0)
- return ASN_PARSE_E;
-
- /* CertStatus */
- switch (source[idx++])
- {
- case (ASN_CONTEXT_SPECIFIC | CERT_GOOD):
- cs->status = CERT_GOOD;
- idx++;
- break;
- case (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | CERT_REVOKED):
- cs->status = CERT_REVOKED;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- idx += length;
- break;
- case (ASN_CONTEXT_SPECIFIC | CERT_UNKNOWN):
- cs->status = CERT_UNKNOWN;
- idx++;
- break;
- default:
- return ASN_PARSE_E;
- }
-
-#if defined(OPENSSL_ALL) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
- cs->thisDateAsn = source + idx;
-#endif
- if (GetBasicDate(source, &idx, cs->thisDate,
- &cs->thisDateFormat, size) < 0)
- return ASN_PARSE_E;
-
-#ifndef NO_ASN_TIME
- if (!XVALIDATE_DATE(cs->thisDate, cs->thisDateFormat, BEFORE))
- return ASN_BEFORE_DATE_E;
-#endif
-
- /* The following items are optional. Only check for them if there is more
- * unprocessed data in the singleResponse wrapper. */
-
- if (((int)(idx - prevIndex) < wrapperSz) &&
- (source[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 0)))
- {
- idx++;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-#if defined(OPENSSL_ALL) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
- cs->nextDateAsn = source + idx;
-#endif
- if (GetBasicDate(source, &idx, cs->nextDate,
- &cs->nextDateFormat, size) < 0)
- return ASN_PARSE_E;
-
-#ifndef NO_ASN_TIME
- if (!XVALIDATE_DATE(cs->nextDate, cs->nextDateFormat, AFTER))
- return ASN_AFTER_DATE_E;
-#endif
- }
- if (((int)(idx - prevIndex) < wrapperSz) &&
- (source[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1)))
- {
- idx++;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
-
- *ioIndex = idx;
-
- return 0;
-}
-
-static int DecodeOcspRespExtensions(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 sz)
-{
- word32 idx = *ioIndex;
- int length;
- int ext_bound; /* boundary index for the sequence of extensions */
- word32 oid;
- int ret;
-
- WOLFSSL_ENTER("DecodeOcspRespExtensions");
-
- if ((idx + 1) > sz)
- return BUFFER_E;
-
- if (source[idx++] != (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1))
- return ASN_PARSE_E;
-
- if (GetLength(source, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- if (GetSequence(source, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
-
- ext_bound = idx + length;
-
- while (idx < (word32)ext_bound) {
- if (GetSequence(source, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
-
- oid = 0;
- if (GetObjectId(source, &idx, &oid, oidOcspType, sz) < 0) {
- WOLFSSL_MSG("\tfail: OBJECT ID");
- return ASN_PARSE_E;
- }
-
- /* check for critical flag */
- if (source[idx] == ASN_BOOLEAN) {
- WOLFSSL_MSG("\tfound optional critical flag, moving past");
- ret = GetBoolean(source, &idx, sz);
- if (ret < 0)
- return ret;
- }
-
- ret = GetOctetString(source, &idx, &length, sz);
- if (ret < 0)
- return ret;
-
- if (oid == OCSP_NONCE_OID) {
- /* get data inside extra OCTET_STRING */
- ret = GetOctetString(source, &idx, &length, sz);
- if (ret < 0)
- return ret;
-
- resp->nonce = source + idx;
- resp->nonceSz = length;
- }
-
- idx += length;
- }
-
- *ioIndex = idx;
- return 0;
-}
-
-
-static int DecodeResponseData(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 size)
-{
- word32 idx = *ioIndex, prev_idx;
- int length;
- int version;
- word32 responderId = 0;
-
- WOLFSSL_ENTER("DecodeResponseData");
-
- resp->response = source + idx;
- prev_idx = idx;
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- resp->responseSz = length + idx - prev_idx;
-
- /* Get version. It is an EXPLICIT[0] DEFAULT(0) value. If this
- * item isn't an EXPLICIT[0], then set version to zero and move
- * onto the next item.
- */
- if (source[idx] == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED))
- {
- idx += 2; /* Eat the value and length */
- if (GetMyVersion(source, &idx, &version, size) < 0)
- return ASN_PARSE_E;
- } else
- version = 0;
-
- responderId = source[idx++];
- if ((responderId == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1)) ||
- (responderId == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 2)))
- {
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
- else
- return ASN_PARSE_E;
-
- /* save pointer to the producedAt time */
- if (GetBasicDate(source, &idx, resp->producedDate,
- &resp->producedDateFormat, size) < 0)
- return ASN_PARSE_E;
-
- if (DecodeSingleResponse(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
-
- /*
- * Check the length of the ResponseData against the current index to
- * see if there are extensions, they are optional.
- */
- if (idx - prev_idx < resp->responseSz)
- if (DecodeOcspRespExtensions(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
-
- *ioIndex = idx;
- return 0;
-}
-
-
-#ifndef WOLFSSL_NO_OCSP_OPTIONAL_CERTS
-
-static int DecodeCerts(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 size)
-{
- word32 idx = *ioIndex;
-
- WOLFSSL_ENTER("DecodeCerts");
-
- if (source[idx++] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC))
- {
- int length;
-
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-
- resp->cert = source + idx;
- resp->certSz = length;
-
- idx += length;
- }
- *ioIndex = idx;
- return 0;
-}
-
-#endif /* WOLFSSL_NO_OCSP_OPTIONAL_CERTS */
-
-
-static int DecodeBasicOcspResponse(byte* source, word32* ioIndex,
- OcspResponse* resp, word32 size, void* cm, void* heap, int noVerify)
-{
- int length;
- word32 idx = *ioIndex;
- word32 end_index;
- int ret;
- int sigLength;
-
- WOLFSSL_ENTER("DecodeBasicOcspResponse");
- (void)heap;
-
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-
- if (idx + length > size)
- return ASN_INPUT_E;
- end_index = idx + length;
-
- if (DecodeResponseData(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
-
- /* Get the signature algorithm */
- if (GetAlgoId(source, &idx, &resp->sigOID, oidSigType, size) < 0)
- return ASN_PARSE_E;
-
- ret = CheckBitString(source, &idx, &sigLength, size, 1, NULL);
- if (ret != 0)
- return ret;
-
- resp->sigSz = sigLength;
- resp->sig = source + idx;
- idx += sigLength;
-
- /*
- * Check the length of the BasicOcspResponse against the current index to
- * see if there are certificates, they are optional.
- */
-#ifndef WOLFSSL_NO_OCSP_OPTIONAL_CERTS
- if (idx < end_index)
- {
- DecodedCert cert;
-
- if (DecodeCerts(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
-
- InitDecodedCert(&cert, resp->cert, resp->certSz, heap);
-
- /* Don't verify if we don't have access to Cert Manager. */
- ret = ParseCertRelative(&cert, CERT_TYPE,
- noVerify ? NO_VERIFY : VERIFY_OCSP, cm);
- if (ret < 0) {
- WOLFSSL_MSG("\tOCSP Responder certificate parsing failed");
- FreeDecodedCert(&cert);
- return ret;
- }
-
-#ifndef WOLFSSL_NO_OCSP_ISSUER_CHECK
- if ((cert.extExtKeyUsage & EXTKEYUSE_OCSP_SIGN) == 0) {
- if (XMEMCMP(cert.subjectHash,
- resp->issuerHash, KEYID_SIZE) == 0) {
- WOLFSSL_MSG("\tOCSP Response signed by issuer");
- }
- else {
- WOLFSSL_MSG("\tOCSP Responder key usage check failed");
- #ifdef OPENSSL_EXTRA
- resp->verifyError = OCSP_BAD_ISSUER;
- #else
- FreeDecodedCert(&cert);
- return BAD_OCSP_RESPONDER;
- #endif
- }
- }
-#endif
-
- /* ConfirmSignature is blocking here */
- ret = ConfirmSignature(&cert.sigCtx,
- resp->response, resp->responseSz,
- cert.publicKey, cert.pubKeySize, cert.keyOID,
- resp->sig, resp->sigSz, resp->sigOID);
- FreeDecodedCert(&cert);
-
- if (ret != 0) {
- WOLFSSL_MSG("\tOCSP Confirm signature failed");
- return ASN_OCSP_CONFIRM_E;
- }
- }
- else
-#endif /* WOLFSSL_NO_OCSP_OPTIONAL_CERTS */
- {
- Signer* ca = NULL;
- int sigValid = -1;
-
- #ifndef NO_SKID
- ca = GetCA(cm, resp->issuerKeyHash);
- #else
- ca = GetCA(cm, resp->issuerHash);
- #endif
-
- if (ca) {
- SignatureCtx sigCtx;
- InitSignatureCtx(&sigCtx, heap, INVALID_DEVID);
-
- /* ConfirmSignature is blocking here */
- sigValid = ConfirmSignature(&sigCtx, resp->response,
- resp->responseSz, ca->publicKey, ca->pubKeySize, ca->keyOID,
- resp->sig, resp->sigSz, resp->sigOID);
- }
- if (ca == NULL || sigValid != 0) {
- WOLFSSL_MSG("\tOCSP Confirm signature failed");
- return ASN_OCSP_CONFIRM_E;
- }
-
- (void)noVerify;
- }
-
- *ioIndex = idx;
- return 0;
-}
-
-
-void InitOcspResponse(OcspResponse* resp, CertStatus* status,
- byte* source, word32 inSz)
-{
- WOLFSSL_ENTER("InitOcspResponse");
-
- XMEMSET(status, 0, sizeof(CertStatus));
- XMEMSET(resp, 0, sizeof(OcspResponse));
-
- resp->responseStatus = -1;
- resp->status = status;
- resp->source = source;
- resp->maxIdx = inSz;
-}
-
-
-int OcspResponseDecode(OcspResponse* resp, void* cm, void* heap, int noVerify)
-{
- int ret;
- int length = 0;
- word32 idx = 0;
- byte* source = resp->source;
- word32 size = resp->maxIdx;
- word32 oid;
-
- WOLFSSL_ENTER("OcspResponseDecode");
-
- /* peel the outer SEQUENCE wrapper */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-
- /* First get the responseStatus, an ENUMERATED */
- if (GetEnumerated(source, &idx, &resp->responseStatus) < 0)
- return ASN_PARSE_E;
-
- if (resp->responseStatus != OCSP_SUCCESSFUL)
- return 0;
-
- /* Next is an EXPLICIT record called ResponseBytes, OPTIONAL */
- if (idx >= size)
- return ASN_INPUT_E;
- if (source[idx++] != (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC))
- return ASN_PARSE_E;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-
- /* Get the responseBytes SEQUENCE */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
-
- /* Check ObjectID for the resposeBytes */
- if (GetObjectId(source, &idx, &oid, oidOcspType, size) < 0)
- return ASN_PARSE_E;
- if (oid != OCSP_BASIC_OID)
- return ASN_PARSE_E;
- ret = GetOctetString(source, &idx, &length, size);
- if (ret < 0)
- return ret;
-
- ret = DecodeBasicOcspResponse(source, &idx, resp, size, cm, heap, noVerify);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-
-word32 EncodeOcspRequestExtensions(OcspRequest* req, byte* output, word32 size)
-{
- static const byte NonceObjId[] = { 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07,
- 0x30, 0x01, 0x02 };
- byte seqArray[5][MAX_SEQ_SZ];
- word32 seqSz[5], totalSz = (word32)sizeof(NonceObjId);
-
- WOLFSSL_ENTER("SetOcspReqExtensions");
-
- if (!req || !output || !req->nonceSz)
- return 0;
-
- totalSz += req->nonceSz;
- totalSz += seqSz[0] = SetOctetString(req->nonceSz, seqArray[0]);
- totalSz += seqSz[1] = SetOctetString(req->nonceSz + seqSz[0], seqArray[1]);
- totalSz += seqSz[2] = SetObjectId(sizeof(NonceObjId), seqArray[2]);
- totalSz += seqSz[3] = SetSequence(totalSz, seqArray[3]);
- totalSz += seqSz[4] = SetSequence(totalSz, seqArray[4]);
-
- if (totalSz > size)
- return 0;
-
- totalSz = 0;
-
- XMEMCPY(output + totalSz, seqArray[4], seqSz[4]);
- totalSz += seqSz[4];
-
- XMEMCPY(output + totalSz, seqArray[3], seqSz[3]);
- totalSz += seqSz[3];
-
- XMEMCPY(output + totalSz, seqArray[2], seqSz[2]);
- totalSz += seqSz[2];
-
- XMEMCPY(output + totalSz, NonceObjId, sizeof(NonceObjId));
- totalSz += (word32)sizeof(NonceObjId);
-
- XMEMCPY(output + totalSz, seqArray[1], seqSz[1]);
- totalSz += seqSz[1];
-
- XMEMCPY(output + totalSz, seqArray[0], seqSz[0]);
- totalSz += seqSz[0];
-
- XMEMCPY(output + totalSz, req->nonce, req->nonceSz);
- totalSz += req->nonceSz;
-
- return totalSz;
-}
-
-
-int EncodeOcspRequest(OcspRequest* req, byte* output, word32 size)
-{
- byte seqArray[5][MAX_SEQ_SZ];
- /* The ASN.1 of the OCSP Request is an onion of sequences */
- byte algoArray[MAX_ALGO_SZ];
- byte issuerArray[MAX_ENCODED_DIG_SZ];
- byte issuerKeyArray[MAX_ENCODED_DIG_SZ];
- byte snArray[MAX_SN_SZ];
- byte extArray[MAX_OCSP_EXT_SZ];
- word32 seqSz[5], algoSz, issuerSz, issuerKeySz, extSz, totalSz;
- int i, snSz;
-
- WOLFSSL_ENTER("EncodeOcspRequest");
-
-#ifdef NO_SHA
- algoSz = SetAlgoID(SHA256h, algoArray, oidHashType, 0);
-#else
- algoSz = SetAlgoID(SHAh, algoArray, oidHashType, 0);
-#endif
-
- issuerSz = SetDigest(req->issuerHash, KEYID_SIZE, issuerArray);
- issuerKeySz = SetDigest(req->issuerKeyHash, KEYID_SIZE, issuerKeyArray);
- snSz = SetSerialNumber(req->serial, req->serialSz, snArray, MAX_SN_SZ);
- extSz = 0;
-
- if (snSz < 0)
- return snSz;
-
- if (req->nonceSz) {
- /* TLS Extensions use this function too - put extensions after
- * ASN.1: Context Specific [2].
- */
- extSz = EncodeOcspRequestExtensions(req, extArray + 2,
- OCSP_NONCE_EXT_SZ);
- extSz += SetExplicit(2, extSz, extArray);
- }
-
- totalSz = algoSz + issuerSz + issuerKeySz + snSz;
- for (i = 4; i >= 0; i--) {
- seqSz[i] = SetSequence(totalSz, seqArray[i]);
- totalSz += seqSz[i];
- if (i == 2) totalSz += extSz;
- }
-
- if (output == NULL)
- return totalSz;
- if (totalSz > size)
- return BUFFER_E;
-
- totalSz = 0;
- for (i = 0; i < 5; i++) {
- XMEMCPY(output + totalSz, seqArray[i], seqSz[i]);
- totalSz += seqSz[i];
- }
-
- XMEMCPY(output + totalSz, algoArray, algoSz);
- totalSz += algoSz;
-
- XMEMCPY(output + totalSz, issuerArray, issuerSz);
- totalSz += issuerSz;
-
- XMEMCPY(output + totalSz, issuerKeyArray, issuerKeySz);
- totalSz += issuerKeySz;
-
- XMEMCPY(output + totalSz, snArray, snSz);
- totalSz += snSz;
-
- if (extSz != 0) {
- XMEMCPY(output + totalSz, extArray, extSz);
- totalSz += extSz;
- }
-
- return totalSz;
-}
-
-
-int InitOcspRequest(OcspRequest* req, DecodedCert* cert, byte useNonce,
- void* heap)
-{
- int ret;
-
- WOLFSSL_ENTER("InitOcspRequest");
-
- if (req == NULL)
- return BAD_FUNC_ARG;
-
- ForceZero(req, sizeof(OcspRequest));
- req->heap = heap;
-
- if (cert) {
- XMEMCPY(req->issuerHash, cert->issuerHash, KEYID_SIZE);
- XMEMCPY(req->issuerKeyHash, cert->issuerKeyHash, KEYID_SIZE);
-
- req->serial = (byte*)XMALLOC(cert->serialSz, req->heap,
- DYNAMIC_TYPE_OCSP_REQUEST);
- if (req->serial == NULL)
- return MEMORY_E;
-
- XMEMCPY(req->serial, cert->serial, cert->serialSz);
- req->serialSz = cert->serialSz;
-
- if (cert->extAuthInfoSz != 0 && cert->extAuthInfo != NULL) {
- req->url = (byte*)XMALLOC(cert->extAuthInfoSz, req->heap,
- DYNAMIC_TYPE_OCSP_REQUEST);
- if (req->url == NULL) {
- XFREE(req->serial, req->heap, DYNAMIC_TYPE_OCSP);
- return MEMORY_E;
- }
-
- XMEMCPY(req->url, cert->extAuthInfo, cert->extAuthInfoSz);
- req->urlSz = cert->extAuthInfoSz;
- }
- }
-
- if (useNonce) {
- WC_RNG rng;
-
- #ifndef HAVE_FIPS
- ret = wc_InitRng_ex(&rng, req->heap, INVALID_DEVID);
- #else
- ret = wc_InitRng(&rng);
- #endif
- if (ret != 0) {
- WOLFSSL_MSG("\tCannot initialize RNG. Skipping the OSCP Nonce.");
- } else {
- if (wc_RNG_GenerateBlock(&rng, req->nonce, MAX_OCSP_NONCE_SZ) != 0)
- WOLFSSL_MSG("\tCannot run RNG. Skipping the OSCP Nonce.");
- else
- req->nonceSz = MAX_OCSP_NONCE_SZ;
-
- wc_FreeRng(&rng);
- }
- }
-
- return 0;
-}
-
-void FreeOcspRequest(OcspRequest* req)
-{
- WOLFSSL_ENTER("FreeOcspRequest");
-
- if (req) {
- if (req->serial)
- XFREE(req->serial, req->heap, DYNAMIC_TYPE_OCSP_REQUEST);
-
- if (req->url)
- XFREE(req->url, req->heap, DYNAMIC_TYPE_OCSP_REQUEST);
- }
-}
-
-
-int CompareOcspReqResp(OcspRequest* req, OcspResponse* resp)
-{
- int cmp;
-
- WOLFSSL_ENTER("CompareOcspReqResp");
-
- if (req == NULL)
- {
- WOLFSSL_MSG("\tReq missing");
- return -1;
- }
-
- if (resp == NULL)
- {
- WOLFSSL_MSG("\tResp missing");
- return 1;
- }
-
- /* Nonces are not critical. The responder may not necessarily add
- * the nonce to the response. */
- if (resp->nonceSz != 0) {
- cmp = req->nonceSz - resp->nonceSz;
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tnonceSz mismatch");
- return cmp;
- }
-
- cmp = XMEMCMP(req->nonce, resp->nonce, req->nonceSz);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tnonce mismatch");
- return cmp;
- }
- }
-
- cmp = XMEMCMP(req->issuerHash, resp->issuerHash, KEYID_SIZE);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tissuerHash mismatch");
- return cmp;
- }
-
- cmp = XMEMCMP(req->issuerKeyHash, resp->issuerKeyHash, KEYID_SIZE);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tissuerKeyHash mismatch");
- return cmp;
- }
-
- cmp = req->serialSz - resp->status->serialSz;
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tserialSz mismatch");
- return cmp;
- }
-
- cmp = XMEMCMP(req->serial, resp->status->serial, req->serialSz);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tserial mismatch");
- return cmp;
- }
-
- return 0;
-}
-
-#endif
-
-
-/* store WC_SHA hash of NAME */
-WOLFSSL_LOCAL int GetNameHash(const byte* source, word32* idx, byte* hash,
- int maxIdx)
-{
- int length; /* length of all distinguished names */
- int ret;
- word32 dummy;
-
- WOLFSSL_ENTER("GetNameHash");
-
- if (source[*idx] == ASN_OBJECT_ID) {
- WOLFSSL_MSG("Trying optional prefix...");
-
- if (GetLength(source, idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
-
- *idx += length;
- WOLFSSL_MSG("Got optional prefix");
- }
-
- /* For OCSP, RFC2560 section 4.1.1 states the issuer hash should be
- * calculated over the entire DER encoding of the Name field, including
- * the tag and length. */
- dummy = *idx;
- if (GetSequence(source, idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
-
-#ifdef NO_SHA
- ret = wc_Sha256Hash(source + dummy, length + *idx - dummy, hash);
-#else
- ret = wc_ShaHash(source + dummy, length + *idx - dummy, hash);
-#endif
-
- *idx += length;
-
- return ret;
-}
-
-
-#ifdef HAVE_CRL
-
-/* initialize decoded CRL */
-void InitDecodedCRL(DecodedCRL* dcrl, void* heap)
-{
- WOLFSSL_MSG("InitDecodedCRL");
-
- dcrl->certBegin = 0;
- dcrl->sigIndex = 0;
- dcrl->sigLength = 0;
- dcrl->signatureOID = 0;
- dcrl->certs = NULL;
- dcrl->totalCerts = 0;
- dcrl->heap = heap;
- #ifdef WOLFSSL_HEAP_TEST
- dcrl->heap = (void*)WOLFSSL_HEAP_TEST;
- #endif
-}
-
-
-/* free decoded CRL resources */
-void FreeDecodedCRL(DecodedCRL* dcrl)
-{
- RevokedCert* tmp = dcrl->certs;
-
- WOLFSSL_MSG("FreeDecodedCRL");
-
- while(tmp) {
- RevokedCert* next = tmp->next;
- XFREE(tmp, dcrl->heap, DYNAMIC_TYPE_REVOKED);
- tmp = next;
- }
-}
-
-
-/* Get Revoked Cert list, 0 on success */
-static int GetRevoked(const byte* buff, word32* idx, DecodedCRL* dcrl,
- int maxIdx)
-{
- int ret, len;
- word32 end;
- byte b;
- RevokedCert* rc;
-
- WOLFSSL_ENTER("GetRevoked");
-
- if (GetSequence(buff, idx, &len, maxIdx) < 0)
- return ASN_PARSE_E;
-
- end = *idx + len;
-
- rc = (RevokedCert*)XMALLOC(sizeof(RevokedCert), dcrl->heap,
- DYNAMIC_TYPE_REVOKED);
- if (rc == NULL) {
- WOLFSSL_MSG("Alloc Revoked Cert failed");
- return MEMORY_E;
- }
-
- if (GetSerialNumber(buff, idx, rc->serialNumber, &rc->serialSz,
- maxIdx) < 0) {
- XFREE(rc, dcrl->heap, DYNAMIC_TYPE_REVOKED);
- return ASN_PARSE_E;
- }
-
- /* add to list */
- rc->next = dcrl->certs;
- dcrl->certs = rc;
- dcrl->totalCerts++;
-
- /* get date */
- ret = GetDateInfo(buff, idx, NULL, &b, NULL, maxIdx);
- if (ret < 0) {
- WOLFSSL_MSG("Expecting Date");
- return ret;
- }
-
- if (*idx != end) /* skip extensions */
- *idx = end;
-
- return 0;
-}
-
-
-/* Get CRL Signature, 0 on success */
-static int GetCRL_Signature(const byte* source, word32* idx, DecodedCRL* dcrl,
- int maxIdx)
-{
- int length;
- int ret;
-
- WOLFSSL_ENTER("GetCRL_Signature");
-
- ret = CheckBitString(source, idx, &length, maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
- dcrl->sigLength = length;
-
- dcrl->signature = (byte*)&source[*idx];
- *idx += dcrl->sigLength;
-
- return 0;
-}
-
-int VerifyCRL_Signature(SignatureCtx* sigCtx, const byte* toBeSigned,
- word32 tbsSz, const byte* signature, word32 sigSz,
- word32 signatureOID, Signer *ca, void* heap)
-{
- /* try to confirm/verify signature */
-#ifndef IGNORE_KEY_EXTENSIONS
- if ((ca->keyUsage & KEYUSE_CRL_SIGN) == 0) {
- WOLFSSL_MSG("CA cannot sign CRLs");
- return ASN_CRL_NO_SIGNER_E;
- }
-#endif /* IGNORE_KEY_EXTENSIONS */
-
- InitSignatureCtx(sigCtx, heap, INVALID_DEVID);
- if (ConfirmSignature(sigCtx, toBeSigned, tbsSz, ca->publicKey,
- ca->pubKeySize, ca->keyOID, signature, sigSz,
- signatureOID) != 0) {
- WOLFSSL_MSG("CRL Confirm signature failed");
- return ASN_CRL_CONFIRM_E;
- }
-
- return 0;
-}
-
-/* prase crl buffer into decoded state, 0 on success */
-int ParseCRL(DecodedCRL* dcrl, const byte* buff, word32 sz, void* cm)
-{
- int version, len, doNextDate = 1;
- word32 oid, idx = 0, dateIdx;
- Signer* ca = NULL;
- SignatureCtx sigCtx;
-
- WOLFSSL_MSG("ParseCRL");
-
- /* raw crl hash */
- /* hash here if needed for optimized comparisons
- * wc_Sha sha;
- * wc_InitSha(&sha);
- * wc_ShaUpdate(&sha, buff, sz);
- * wc_ShaFinal(&sha, dcrl->crlHash); */
-
- if (GetSequence(buff, &idx, &len, sz) < 0)
- return ASN_PARSE_E;
-
- dcrl->certBegin = idx;
-
- if (GetSequence(buff, &idx, &len, sz) < 0)
- return ASN_PARSE_E;
- dcrl->sigIndex = len + idx;
-
- /* may have version */
- if (buff[idx] == ASN_INTEGER) {
- if (GetMyVersion(buff, &idx, &version, sz) < 0)
- return ASN_PARSE_E;
- }
-
- if (GetAlgoId(buff, &idx, &oid, oidIgnoreType, sz) < 0)
- return ASN_PARSE_E;
-
- if (GetNameHash(buff, &idx, dcrl->issuerHash, sz) < 0)
- return ASN_PARSE_E;
-
- if (GetBasicDate(buff, &idx, dcrl->lastDate, &dcrl->lastDateFormat, sz) < 0)
- return ASN_PARSE_E;
-
- dateIdx = idx;
-
- if (GetBasicDate(buff, &idx, dcrl->nextDate, &dcrl->nextDateFormat, sz) < 0)
- {
-#ifndef WOLFSSL_NO_CRL_NEXT_DATE
- (void)dateIdx;
- return ASN_PARSE_E;
-#else
- dcrl->nextDateFormat = ASN_OTHER_TYPE; /* skip flag */
- doNextDate = 0;
- idx = dateIdx;
-#endif
- }
-
- if (doNextDate) {
-#ifndef NO_ASN_TIME
- if (!XVALIDATE_DATE(dcrl->nextDate, dcrl->nextDateFormat, AFTER)) {
- WOLFSSL_MSG("CRL after date is no longer valid");
- return ASN_AFTER_DATE_E;
- }
-#endif
- }
-
- if (idx != dcrl->sigIndex && buff[idx] != CRL_EXTENSIONS) {
- if (GetSequence(buff, &idx, &len, sz) < 0)
- return ASN_PARSE_E;
-
- len += idx;
-
- while (idx < (word32)len) {
- if (GetRevoked(buff, &idx, dcrl, sz) < 0)
- return ASN_PARSE_E;
- }
- }
-
- if (idx != dcrl->sigIndex)
- idx = dcrl->sigIndex; /* skip extensions */
-
- if (GetAlgoId(buff, &idx, &dcrl->signatureOID, oidSigType, sz) < 0)
- return ASN_PARSE_E;
-
- if (GetCRL_Signature(buff, &idx, dcrl, sz) < 0)
- return ASN_PARSE_E;
-
- /* openssl doesn't add skid by default for CRLs cause firefox chokes
- we're not assuming it's available yet */
-#if !defined(NO_SKID) && defined(CRL_SKID_READY)
- if (dcrl->extAuthKeyIdSet)
- ca = GetCA(cm, dcrl->extAuthKeyId);
- if (ca == NULL)
- ca = GetCAByName(cm, dcrl->issuerHash);
-#else
- ca = GetCA(cm, dcrl->issuerHash);
-#endif /* !NO_SKID && CRL_SKID_READY */
- WOLFSSL_MSG("About to verify CRL signature");
-
- if (ca == NULL) {
- WOLFSSL_MSG("Did NOT find CRL issuer CA");
- return ASN_CRL_NO_SIGNER_E;
- }
-
- WOLFSSL_MSG("Found CRL issuer CA");
- return VerifyCRL_Signature(&sigCtx, buff + dcrl->certBegin,
- dcrl->sigIndex - dcrl->certBegin, dcrl->signature, dcrl->sigLength,
- dcrl->signatureOID, ca, dcrl->heap);
-}
-
-#endif /* HAVE_CRL */
-
-#undef ERROR_OUT
-
-#endif /* !NO_ASN */
-
-#ifdef WOLFSSL_SEP
-
-
-#endif /* WOLFSSL_SEP */
-
+/* asn.c
+ *
+ * Copyright (C) 2006-2017 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+#ifdef HAVE_CONFIG_H
+ #include <config.h>
+#endif
+
+#include <wolfssl/wolfcrypt/settings.h>
+
+/*
+ASN Options:
+ * NO_ASN_TIME: Disables time parts of the ASN code for systems without an RTC
+ or wishing to save space.
+ * IGNORE_NAME_CONSTRAINTS: Skip ASN name checks.
+ * ASN_DUMP_OID: Allows dump of OID information for debugging.
+ * RSA_DECODE_EXTRA: Decodes extra information in RSA public key.
+ * WOLFSSL_CERT_GEN: Cert generation. Saves extra certificate info in GetName.
+ * WOLFSSL_NO_ASN_STRICT: Disable strict RFC compliance checks to
+ restore 3.13.0 behavior.
+ * WOLFSSL_NO_OCSP_OPTIONAL_CERTS: Skip optional OCSP certs (responder issuer
+ must still be trusted)
+ * WOLFSSL_NO_TRUSTED_CERTS_VERIFY: Workaround for situation where entire cert
+ chain is not loaded. This only matches on subject and public key and
+ does not perform a PKI validation, so it is not a secure solution.
+ Only enabled for OCSP.
+ * WOLFSSL_NO_OCSP_ISSUER_CHECK: Can be defined for backwards compatibility to
+ disable checking of OCSP subject hash with issuer hash.
+ * WOLFSSL_ALT_CERT_CHAINS: Allows matching multiple CA's to validate
+ chain based on issuer and public key (includes signature confirmation)
+*/
+
+#ifndef NO_ASN
+
+#include <wolfssl/wolfcrypt/asn.h>
+#include <wolfssl/wolfcrypt/coding.h>
+#include <wolfssl/wolfcrypt/md2.h>
+#include <wolfssl/wolfcrypt/hmac.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+#include <wolfssl/wolfcrypt/pwdbased.h>
+#include <wolfssl/wolfcrypt/des3.h>
+#include <wolfssl/wolfcrypt/aes.h>
+#include <wolfssl/wolfcrypt/wc_encrypt.h>
+#include <wolfssl/wolfcrypt/logging.h>
+
+#include <wolfssl/wolfcrypt/random.h>
+#include <wolfssl/wolfcrypt/hash.h>
+#ifdef NO_INLINE
+ #include <wolfssl/wolfcrypt/misc.h>
+#else
+ #define WOLFSSL_MISC_INCLUDED
+ #include <wolfcrypt/src/misc.c>
+#endif
+
+#ifndef NO_PWDBASED
+ #include <wolfssl/wolfcrypt/aes.h>
+#endif
+#ifndef NO_RC4
+ #include <wolfssl/wolfcrypt/arc4.h>
+#endif
+
+#ifdef HAVE_NTRU
+ #include "libntruencrypt/ntru_crypto.h"
+#endif
+
+#if defined(WOLFSSL_SHA512) || defined(WOLFSSL_SHA384)
+ #include <wolfssl/wolfcrypt/sha512.h>
+#endif
+
+#ifndef NO_SHA256
+ #include <wolfssl/wolfcrypt/sha256.h>
+#endif
+
+#ifdef HAVE_ECC
+ #include <wolfssl/wolfcrypt/ecc.h>
+#endif
+
+#ifdef HAVE_ED25519
+ #include <wolfssl/wolfcrypt/ed25519.h>
+#endif
+
+#ifndef NO_RSA
+ #include <wolfssl/wolfcrypt/rsa.h>
+#endif
+
+#ifdef WOLFSSL_DEBUG_ENCODING
+ #if defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
+ #if MQX_USE_IO_OLD
+ #include <fio.h>
+ #else
+ #include <nio.h>
+ #endif
+ #else
+ #include <stdio.h>
+ #endif
+#endif
+
+
+#ifdef _MSC_VER
+ /* 4996 warning to use MS extensions e.g., strcpy_s instead of XSTRNCPY */
+ #pragma warning(disable: 4996)
+#endif
+
+#define ERROR_OUT(err, eLabel) { ret = (err); goto eLabel; }
+
+WOLFSSL_LOCAL int GetLength(const byte* input, word32* inOutIdx, int* len,
+ word32 maxIdx)
+{
+ int length = 0;
+ word32 idx = *inOutIdx;
+ byte b;
+
+ *len = 0; /* default length */
+
+ if ((idx + 1) > maxIdx) { /* for first read */
+ WOLFSSL_MSG("GetLength bad index on input");
+ return BUFFER_E;
+ }
+
+ b = input[idx++];
+ if (b >= ASN_LONG_LENGTH) {
+ word32 bytes = b & 0x7F;
+
+ if ((idx + bytes) > maxIdx) { /* for reading bytes */
+ WOLFSSL_MSG("GetLength bad long length");
+ return BUFFER_E;
+ }
+
+ while (bytes--) {
+ b = input[idx++];
+ length = (length << 8) | b;
+ }
+ }
+ else
+ length = b;
+
+ if ((idx + length) > maxIdx) { /* for user of length */
+ WOLFSSL_MSG("GetLength value exceeds buffer length");
+ return BUFFER_E;
+ }
+
+ *inOutIdx = idx;
+ if (length > 0)
+ *len = length;
+
+ return length;
+}
+
+
+/* Get the DER/BER encoding of an ASN.1 header.
+ *
+ * input Buffer holding DER/BER encoded data.
+ * tag ASN.1 tag value expected in header.
+ * inOutIdx Current index into buffer to parse.
+ * len The number of bytes in the ASN.1 data.
+ * maxIdx Length of data in buffer.
+ * returns BUFFER_E when there is not enough data to parse.
+ * ASN_PARSE_E when the expected tag is not found or length is invalid.
+ * Otherwise, the number of bytes in the ASN.1 data.
+ */
+static int GetASNHeader(const byte* input, byte tag, word32* inOutIdx, int* len,
+ word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ byte b;
+ int length;
+
+ if ((idx + 1) > maxIdx)
+ return BUFFER_E;
+
+ b = input[idx++];
+ if (b != tag)
+ return ASN_PARSE_E;
+
+ if (GetLength(input, &idx, &length, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ *len = length;
+ *inOutIdx = idx;
+ return length;
+}
+
+WOLFSSL_LOCAL int GetSequence(const byte* input, word32* inOutIdx, int* len,
+ word32 maxIdx)
+{
+ return GetASNHeader(input, ASN_SEQUENCE | ASN_CONSTRUCTED, inOutIdx, len,
+ maxIdx);
+}
+
+
+WOLFSSL_LOCAL int GetSet(const byte* input, word32* inOutIdx, int* len,
+ word32 maxIdx)
+{
+ return GetASNHeader(input, ASN_SET | ASN_CONSTRUCTED, inOutIdx, len,
+ maxIdx);
+}
+
+/* Get the DER/BER encoded ASN.1 NULL element.
+ * Ensure that the all fields are as expected and move index past the element.
+ *
+ * input Buffer holding DER/BER encoded data.
+ * inOutIdx Current index into buffer to parse.
+ * maxIdx Length of data in buffer.
+ * returns BUFFER_E when there is not enough data to parse.
+ * ASN_TAG_NULL_E when the NULL tag is not found.
+ * ASN_EXPECT_0_E when the length is not zero.
+ * Otherwise, 0 to indicate success.
+ */
+static int GetASNNull(const byte* input, word32* inOutIdx, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ byte b;
+
+ if ((idx + 2) > maxIdx)
+ return BUFFER_E;
+
+ b = input[idx++];
+ if (b != ASN_TAG_NULL)
+ return ASN_TAG_NULL_E;
+
+ if (input[idx++] != 0)
+ return ASN_EXPECT_0_E;
+
+ *inOutIdx = idx;
+ return 0;
+}
+
+/* Set the DER/BER encoding of the ASN.1 NULL element.
+ *
+ * output Buffer to write into.
+ * returns the number of bytes added to the buffer.
+ */
+static int SetASNNull(byte* output)
+{
+ output[0] = ASN_TAG_NULL;
+ output[1] = 0;
+
+ return 2;
+}
+
+/* Get the DER/BER encoding of an ASN.1 BOOLEAN.
+ *
+ * input Buffer holding DER/BER encoded data.
+ * inOutIdx Current index into buffer to parse.
+ * maxIdx Length of data in buffer.
+ * returns BUFFER_E when there is not enough data to parse.
+ * ASN_PARSE_E when the BOOLEAN tag is not found or length is not 1.
+ * Otherwise, 0 to indicate the value was false and 1 to indicate true.
+ */
+static int GetBoolean(const byte* input, word32* inOutIdx, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ byte b;
+
+ if ((idx + 3) > maxIdx)
+ return BUFFER_E;
+
+ b = input[idx++];
+ if (b != ASN_BOOLEAN)
+ return ASN_PARSE_E;
+
+ if (input[idx++] != 1)
+ return ASN_PARSE_E;
+
+ b = input[idx++] != 0;
+
+ *inOutIdx = idx;
+ return b;
+}
+
+#ifdef ASN1_SET_BOOLEAN
+/* Set the DER/BER encoding of the ASN.1 NULL element.
+ * Note: Function not required as yet.
+ *
+ * val Boolean value to encode.
+ * output Buffer to write into.
+ * returns the number of bytes added to the buffer.
+ */
+static int SetBoolean(int val, byte* output)
+{
+ output[0] = ASN_BOOLEAN;
+ output[1] = 1;
+ output[2] = val ? -1 : 0;
+
+ return 3;
+}
+#endif
+
+/* Get the DER/BER encoding of an ASN.1 OCTET_STRING header.
+ *
+ * input Buffer holding DER/BER encoded data.
+ * inOutIdx Current index into buffer to parse.
+ * len The number of bytes in the ASN.1 data.
+ * maxIdx Length of data in buffer.
+ * returns BUFFER_E when there is not enough data to parse.
+ * ASN_PARSE_E when the OCTET_STRING tag is not found or length is
+ * invalid.
+ * Otherwise, the number of bytes in the ASN.1 data.
+ */
+static int GetOctetString(const byte* input, word32* inOutIdx, int* len,
+ word32 maxIdx)
+{
+ return GetASNHeader(input, ASN_OCTET_STRING, inOutIdx, len, maxIdx);
+}
+
+/* Get the DER/BER encoding of an ASN.1 INTEGER header.
+ * Removes the leading zero byte when found.
+ *
+ * input Buffer holding DER/BER encoded data.
+ * inOutIdx Current index into buffer to parse.
+ * len The number of bytes in the ASN.1 data (excluding any leading zero).
+ * maxIdx Length of data in buffer.
+ * returns BUFFER_E when there is not enough data to parse.
+ * ASN_PARSE_E when the INTEGER tag is not found, length is invalid,
+ * or invalid use of or missing leading zero.
+ * Otherwise, 0 to indicate success.
+ */
+static int GetASNInt(const byte* input, word32* inOutIdx, int* len,
+ word32 maxIdx)
+{
+ int ret;
+
+ ret = GetASNHeader(input, ASN_INTEGER, inOutIdx, len, maxIdx);
+ if (ret < 0)
+ return ret;
+
+ if (*len > 0) {
+ /* remove leading zero, unless there is only one 0x00 byte */
+ if ((input[*inOutIdx] == 0x00) && (*len > 1)) {
+ (*inOutIdx)++;
+ (*len)--;
+
+ if (*len > 0 && (input[*inOutIdx] & 0x80) == 0)
+ return ASN_PARSE_E;
+ }
+ }
+
+ return 0;
+}
+
+/* Get the DER/BER encoding of an ASN.1 INTEGER that has a value of no more than
+ * 7 bits.
+ *
+ * input Buffer holding DER/BER encoded data.
+ * inOutIdx Current index into buffer to parse.
+ * maxIdx Length of data in buffer.
+ * returns BUFFER_E when there is not enough data to parse.
+ * ASN_PARSE_E when the INTEGER tag is not found or length is invalid.
+ * Otherwise, the 7-bit value.
+ */
+static int GetInteger7Bit(const byte* input, word32* inOutIdx, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ byte b;
+
+ if ((idx + 3) > maxIdx)
+ return BUFFER_E;
+
+ if (input[idx++] != ASN_INTEGER)
+ return ASN_PARSE_E;
+ if (input[idx++] != 1)
+ return ASN_PARSE_E;
+ b = input[idx++];
+
+ *inOutIdx = idx;
+ return b;
+}
+
+
+#if !defined(NO_DSA) && !defined(NO_SHA)
+static char sigSha1wDsaName[] = "SHAwDSA";
+#endif /* NO_DSA */
+#ifndef NO_RSA
+#ifdef WOLFSSL_MD2
+ static char sigMd2wRsaName[] = "MD2wRSA";
+#endif
+#ifndef NO_MD5
+ static char sigMd5wRsaName[] = "MD5wRSA";
+#endif
+#ifndef NO_SHA
+ static char sigSha1wRsaName[] = "SHAwRSA";
+#endif
+#ifdef WOLFSSL_SHA224
+ static char sigSha224wRsaName[] = "SHA224wRSA";
+#endif
+#ifndef NO_SHA256
+ static char sigSha256wRsaName[] = "SHA256wRSA";
+#endif
+#ifdef WOLFSSL_SHA384
+ static char sigSha384wRsaName[] = "SHA384wRSA";
+#endif
+#ifdef WOLFSSL_SHA512
+ static char sigSha512wRsaName[] = "SHA512wRSA";
+#endif
+#endif /* NO_RSA */
+#ifdef HAVE_ECC
+#ifndef NO_SHA
+ static char sigSha1wEcdsaName[] = "SHAwECDSA";
+#endif
+#ifdef WOLFSSL_SHA224
+ static char sigSha224wEcdsaName[] = "SHA224wECDSA";
+#endif
+#ifndef NO_SHA256
+ static char sigSha256wEcdsaName[] = "SHA256wECDSA";
+#endif
+#ifdef WOLFSSL_SHA384
+ static char sigSha384wEcdsaName[] = "SHA384wECDSA";
+#endif
+#ifdef WOLFSSL_SHA512
+ static char sigSha512wEcdsaName[] = "SHA512wECDSA";
+#endif
+#endif /* HAVE_ECC */
+static char sigUnknownName[] = "Unknown";
+
+
+/* Get the human readable string for a signature type
+ *
+ * oid Oid value for signature
+ */
+char* GetSigName(int oid) {
+ switch (oid) {
+ #if !defined(NO_DSA) && !defined(NO_SHA)
+ case CTC_SHAwDSA:
+ return sigSha1wDsaName;
+ #endif /* NO_DSA && NO_SHA */
+ #ifndef NO_RSA
+ #ifdef WOLFSSL_MD2
+ case CTC_MD2wRSA:
+ return sigMd2wRsaName;
+ #endif
+ #ifndef NO_MD5
+ case CTC_MD5wRSA:
+ return sigMd5wRsaName;
+ #endif
+ #ifndef NO_SHA
+ case CTC_SHAwRSA:
+ return sigSha1wRsaName;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case CTC_SHA224wRSA:
+ return sigSha224wRsaName;
+ #endif
+ #ifndef NO_SHA256
+ case CTC_SHA256wRSA:
+ return sigSha256wRsaName;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case CTC_SHA384wRSA:
+ return sigSha384wRsaName;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case CTC_SHA512wRSA:
+ return sigSha512wRsaName;
+ #endif
+ #endif /* NO_RSA */
+ #ifdef HAVE_ECC
+ #ifndef NO_SHA
+ case CTC_SHAwECDSA:
+ return sigSha1wEcdsaName;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case CTC_SHA224wECDSA:
+ return sigSha224wEcdsaName;
+ #endif
+ #ifndef NO_SHA256
+ case CTC_SHA256wECDSA:
+ return sigSha256wEcdsaName;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case CTC_SHA384wECDSA:
+ return sigSha384wEcdsaName;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case CTC_SHA512wECDSA:
+ return sigSha512wEcdsaName;
+ #endif
+ #endif /* HAVE_ECC */
+ default:
+ return sigUnknownName;
+ }
+}
+
+
+#if !defined(NO_DSA) || defined(HAVE_ECC) || \
+ (!defined(NO_RSA) && \
+ (defined(WOLFSSL_CERT_GEN) || \
+ ((defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(HAVE_USER_RSA))))
+/* Set the DER/BER encoding of the ASN.1 INTEGER header.
+ *
+ * len Length of data to encode.
+ * firstByte First byte of data, most significant byte of integer, to encode.
+ * output Buffer to write into.
+ * returns the number of bytes added to the buffer.
+ */
+static int SetASNInt(int len, byte firstByte, byte* output)
+{
+ word32 idx = 0;
+
+ output[idx++] = ASN_INTEGER;
+ if (firstByte & 0x80)
+ len++;
+ idx += SetLength(len, output + idx);
+ if (firstByte & 0x80)
+ output[idx++] = 0x00;
+
+ return idx;
+}
+#endif
+
+#if !defined(NO_DSA) || defined(HAVE_ECC) || defined(WOLFSSL_CERT_GEN) || \
+ ((defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(NO_RSA) && !defined(HAVE_USER_RSA))
+/* Set the DER/BER encoding of the ASN.1 INTEGER element with an mp_int.
+ * The number is assumed to be positive.
+ *
+ * n Multi-precision integer to encode.
+ * maxSz Maximum size of the encoded integer.
+ * A negative value indicates no check of length requested.
+ * output Buffer to write into.
+ * returns BUFFER_E when the data is too long for the buffer.
+ * MP_TO_E when encoding the integer fails.
+ * Otherwise, the number of bytes added to the buffer.
+ */
+static int SetASNIntMP(mp_int* n, int maxSz, byte* output)
+{
+ int idx = 0;
+ int leadingBit;
+ int length;
+ int err;
+
+ leadingBit = mp_leading_bit(n);
+ length = mp_unsigned_bin_size(n);
+ idx = SetASNInt(length, leadingBit ? 0x80 : 0x00, output);
+ if (maxSz >= 0 && (idx + length) > maxSz)
+ return BUFFER_E;
+
+ err = mp_to_unsigned_bin(n, output + idx);
+ if (err != MP_OKAY)
+ return MP_TO_E;
+ idx += length;
+
+ return idx;
+}
+#endif
+
+#if !defined(NO_RSA) && defined(HAVE_USER_RSA) && defined(WOLFSSL_CERT_GEN)
+/* Set the DER/BER encoding of the ASN.1 INTEGER element with an mp_int from
+ * an RSA key.
+ * The number is assumed to be positive.
+ *
+ * n Multi-precision integer to encode.
+ * output Buffer to write into.
+ * returns BUFFER_E when the data is too long for the buffer.
+ * MP_TO_E when encoding the integer fails.
+ * Otherwise, the number of bytes added to the buffer.
+ */
+static int SetASNIntRSA(mp_int* n, byte* output)
+{
+ int idx = 0;
+ int leadingBit;
+ int length;
+ int err;
+
+ leadingBit = wc_Rsa_leading_bit(n);
+ length = wc_Rsa_unsigned_bin_size(n);
+ idx = SetASNInt(length, leadingBit ? 0x80 : 0x00, output);
+ if ((idx + length) > MAX_RSA_INT_SZ)
+ return BUFFER_E;
+
+ err = wc_Rsa_to_unsigned_bin(n, output + idx, length);
+ if (err != MP_OKAY)
+ return MP_TO_E;
+ idx += length;
+
+ return idx;
+}
+#endif /* !NO_RSA && HAVE_USER_RSA && WOLFSSL_CERT_GEN */
+
+/* Windows header clash for WinCE using GetVersion */
+WOLFSSL_LOCAL int GetMyVersion(const byte* input, word32* inOutIdx,
+ int* version, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+
+ if ((idx + MIN_VERSION_SZ) > maxIdx)
+ return ASN_PARSE_E;
+
+ if (input[idx++] != ASN_INTEGER)
+ return ASN_PARSE_E;
+
+ if (input[idx++] != 0x01)
+ return ASN_VERSION_E;
+
+ *version = input[idx++];
+ *inOutIdx = idx;
+
+ return *version;
+}
+
+
+#ifndef NO_PWDBASED
+/* Get small count integer, 32 bits or less */
+int GetShortInt(const byte* input, word32* inOutIdx, int* number, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ word32 len;
+
+ *number = 0;
+
+ /* check for type and length bytes */
+ if ((idx + 2) > maxIdx)
+ return BUFFER_E;
+
+ if (input[idx++] != ASN_INTEGER)
+ return ASN_PARSE_E;
+
+ len = input[idx++];
+ if (len > 4)
+ return ASN_PARSE_E;
+
+ if (len + idx > maxIdx)
+ return ASN_PARSE_E;
+
+ while (len--) {
+ *number = *number << 8 | input[idx++];
+ }
+
+ *inOutIdx = idx;
+
+ return *number;
+}
+
+
+/* Set small integer, 32 bits or less. DER encoding with no leading 0s
+ * returns total amount written including ASN tag and length byte on success */
+static int SetShortInt(byte* input, word32* inOutIdx, word32 number,
+ word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ word32 len = 0;
+ int i;
+ byte ar[MAX_LENGTH_SZ];
+
+ /* check for room for type and length bytes */
+ if ((idx + 2) > maxIdx)
+ return BUFFER_E;
+
+ input[idx++] = ASN_INTEGER;
+ idx++; /* place holder for length byte */
+ if (MAX_LENGTH_SZ + idx > maxIdx)
+ return ASN_PARSE_E;
+
+ /* find first non zero byte */
+ XMEMSET(ar, 0, MAX_LENGTH_SZ);
+ c32toa(number, ar);
+ for (i = 0; i < MAX_LENGTH_SZ; i++) {
+ if (ar[i] != 0) {
+ break;
+ }
+ }
+
+ /* handle case of 0 */
+ if (i == MAX_LENGTH_SZ) {
+ input[idx++] = 0; len++;
+ }
+
+ for (; i < MAX_LENGTH_SZ && idx < maxIdx; i++) {
+ input[idx++] = ar[i]; len++;
+ }
+
+ /* jump back to beginning of input buffer using unaltered inOutIdx value
+ * and set number of bytes for integer, then update the index value */
+ input[*inOutIdx + 1] = (byte)len;
+ *inOutIdx = idx;
+
+ return len + 2; /* size of integer bytes plus ASN TAG and length byte */
+}
+#endif /* !NO_PWDBASED */
+
+/* May not have one, not an error */
+static int GetExplicitVersion(const byte* input, word32* inOutIdx, int* version,
+ word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+
+ WOLFSSL_ENTER("GetExplicitVersion");
+
+ if ((idx + 1) > maxIdx)
+ return BUFFER_E;
+
+ if (input[idx++] == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED)) {
+ *inOutIdx = ++idx; /* skip header */
+ return GetMyVersion(input, inOutIdx, version, maxIdx);
+ }
+
+ /* go back as is */
+ *version = 0;
+
+ return 0;
+}
+
+int GetInt(mp_int* mpi, const byte* input, word32* inOutIdx, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ int ret;
+ int length;
+
+ ret = GetASNInt(input, &idx, &length, maxIdx);
+ if (ret != 0)
+ return ret;
+
+ if (mp_init(mpi) != MP_OKAY)
+ return MP_INIT_E;
+
+ if (mp_read_unsigned_bin(mpi, (byte*)input + idx, length) != 0) {
+ mp_clear(mpi);
+ return ASN_GETINT_E;
+ }
+
+#ifdef HAVE_WOLF_BIGINT
+ if (wc_bigint_from_unsigned_bin(&mpi->raw, input + idx, length) != 0) {
+ mp_clear(mpi);
+ return ASN_GETINT_E;
+ }
+#endif /* HAVE_WOLF_BIGINT */
+
+ *inOutIdx = idx + length;
+
+ return 0;
+}
+
+#if !defined(WOLFSSL_KEY_GEN) && !defined(OPENSSL_EXTRA) && defined(RSA_LOW_MEM)
+#if !defined(NO_RSA) && !defined(HAVE_USER_RSA)
+static int SkipInt(const byte* input, word32* inOutIdx, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ int ret;
+ int length;
+
+ ret = GetASNInt(input, &idx, &length, maxIdx);
+ if (ret != 0)
+ return ret;
+
+ *inOutIdx = idx + length;
+
+ return 0;
+}
+#endif
+#endif
+
+static int CheckBitString(const byte* input, word32* inOutIdx, int* len,
+ word32 maxIdx, int zeroBits, byte* unusedBits)
+{
+ word32 idx = *inOutIdx;
+ int length;
+ byte b;
+
+ if ((idx + 1) > maxIdx)
+ return BUFFER_E;
+
+ if (input[idx++] != ASN_BIT_STRING)
+ return ASN_BITSTR_E;
+
+ if (GetLength(input, &idx, &length, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ /* extra sanity check that length is greater than 0 */
+ if (length <= 0) {
+ WOLFSSL_MSG("Error length was 0 in CheckBitString");
+ return BUFFER_E;
+ }
+
+ if (idx + 1 > maxIdx) {
+ WOLFSSL_MSG("Attempted buffer read larger than input buffer");
+ return BUFFER_E;
+ }
+
+ b = input[idx];
+ if (zeroBits && b != 0x00)
+ return ASN_EXPECT_0_E;
+ if (b >= 0x08)
+ return ASN_PARSE_E;
+ if (b != 0) {
+ if ((byte)(input[idx + length - 1] << (8 - b)) != 0)
+ return ASN_PARSE_E;
+ }
+ idx++;
+ length--; /* length has been checked for greater than 0 */
+
+ *inOutIdx = idx;
+ if (len != NULL)
+ *len = length;
+ if (unusedBits != NULL)
+ *unusedBits = b;
+
+ return 0;
+}
+
+/* RSA (with CertGen or KeyGen) OR ECC OR ED25519 (with CertGen or KeyGen) */
+#if (!defined(NO_RSA) && !defined(HAVE_USER_RSA) && \
+ (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA))) || \
+ defined(HAVE_ECC) || \
+ (defined(HAVE_ED25519) && \
+ (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)))
+
+/* Set the DER/BER encoding of the ASN.1 BIT_STRING header.
+ *
+ * len Length of data to encode.
+ * unusedBits The number of unused bits in the last byte of data.
+ * That is, the number of least significant zero bits before a one.
+ * The last byte is the most-significant non-zero byte of a number.
+ * output Buffer to write into.
+ * returns the number of bytes added to the buffer.
+ */
+static word32 SetBitString(word32 len, byte unusedBits, byte* output)
+{
+ word32 idx = 0;
+
+ output[idx++] = ASN_BIT_STRING;
+ idx += SetLength(len + 1, output + idx);
+ output[idx++] = unusedBits;
+
+ return idx;
+}
+#endif /* !NO_RSA || HAVE_ECC || HAVE_ED25519 */
+
+#ifdef ASN_BER_TO_DER
+/* Convert a BER encoding with indefinite length items to DER.
+ *
+ * ber BER encoded data.
+ * berSz Length of BER encoded data.
+ * der Buffer to hold DER encoded version of data.
+ * NULL indicates only the length is required.
+ * derSz The size of the buffer to hold the DER encoded data.
+ * Will be set if der is NULL, otherwise the value is checked as der is
+ * filled.
+ * returns ASN_PARSE_E if the BER data is invalid and BAD_FUNC_ARG if ber or
+ * derSz are NULL.
+ */
+int wc_BerToDer(const byte* ber, word32 berSz, byte* der, word32* derSz)
+{
+ int ret;
+ word32 i, j, k;
+ int len, l;
+ int indef;
+ int depth = 0;
+ byte type;
+ word32 cnt, sz;
+ word32 outSz;
+ byte lenBytes[4];
+
+ if (ber == NULL || derSz == NULL)
+ return BAD_FUNC_ARG;
+
+ outSz = *derSz;
+
+ for (i = 0, j = 0; i < berSz; ) {
+ /* Check that there is data for an ASN item to parse. */
+ if (i + 2 > berSz)
+ return ASN_PARSE_E;
+
+ /* End Of Content (EOC) mark end of indefinite length items.
+ * EOCs are not encoded in DER.
+ * Keep track of no. indefinite length items that have not been
+ * terminated in depth.
+ */
+ if (ber[i] == 0 && ber[i+1] == 0) {
+ if (depth == 0)
+ break;
+ if (--depth == 0)
+ break;
+
+ i += 2;
+ continue;
+ }
+
+ /* Indefinite length is encoded as: 0x80 */
+ type = ber[i];
+ indef = ber[i+1] == ASN_INDEF_LENGTH;
+ if (indef && (type & 0xC0) == 0 &&
+ ber[i] != (ASN_SEQUENCE | ASN_CONSTRUCTED) &&
+ ber[i] != (ASN_SET | ASN_CONSTRUCTED)) {
+ /* Indefinite length OCTET STRING or other simple type.
+ * Put all the data into one entry.
+ */
+
+ /* Type no longer constructed. */
+ type &= ~ASN_CONSTRUCTED;
+ if (der != NULL) {
+ /* Ensure space for type. */
+ if (j + 1 >= outSz)
+ return BUFFER_E;
+ der[j] = type;
+ }
+ i++; j++;
+ /* Skip indefinite length. */
+ i++;
+
+ /* There must be further ASN1 items to combine. */
+ if (i + 2 > berSz)
+ return ASN_PARSE_E;
+
+ /* Calculate length of combined data. */
+ len = 0;
+ k = i;
+ while (ber[k] != 0x00) {
+ /* Each ASN item must be the same type as the constructed. */
+ if (ber[k] != type)
+ return ASN_PARSE_E;
+ k++;
+
+ ret = GetLength(ber, &k, &l, berSz);
+ if (ret < 0)
+ return ASN_PARSE_E;
+ k += l;
+ len += l;
+
+ /* Must at least have terminating EOC. */
+ if (k + 2 > berSz)
+ return ASN_PARSE_E;
+ }
+ /* Ensure a valid EOC ASN item. */
+ if (ber[k+1] != 0x00)
+ return ASN_PARSE_E;
+
+ if (der == NULL) {
+ /* Add length of ASN item length encoding and data. */
+ j += SetLength(len, lenBytes);
+ j += len;
+ }
+ else {
+ /* Check space for encoded length. */
+ if (SetLength(len, lenBytes) > outSz - j)
+ return BUFFER_E;
+ /* Encode new length. */
+ j += SetLength(len, der + j);
+
+ /* Encode data in single item. */
+ k = i;
+ while (ber[k] != 0x00) {
+ /* Skip ASN type. */
+ k++;
+
+ /* Find length of data in ASN item. */
+ ret = GetLength(ber, &k, &l, berSz);
+ if (ret < 0)
+ return ASN_PARSE_E;
+
+ /* Ensure space for data and copy in. */
+ if (j + l > outSz)
+ return BUFFER_E;
+ XMEMCPY(der + j, ber + k, l);
+ k += l; j += l;
+ }
+ }
+ /* Continue conversion after EOC. */
+ i = k + 2;
+
+ continue;
+ }
+
+ if (der != NULL) {
+ /* Ensure space for type and at least one byte of length. */
+ if (j + 1 >= outSz)
+ return BUFFER_E;
+ /* Put in type. */
+ der[j] = ber[i];
+ }
+ i++; j++;
+
+ if (indef) {
+ /* Skip indefinite length. */
+ i++;
+ /* Calculate the size of the data inside constructed. */
+ ret = wc_BerToDer(ber + i, berSz - i, NULL, &sz);
+ if (ret != LENGTH_ONLY_E)
+ return ret;
+
+ if (der != NULL) {
+ /* Ensure space for encoded length. */
+ if (SetLength(sz, lenBytes) > outSz - j)
+ return BUFFER_E;
+ /* Encode real length. */
+ j += SetLength(sz, der + j);
+ }
+ else {
+ /* Add size of encoded length. */
+ j += SetLength(sz, lenBytes);
+ }
+
+ /* Another EOC to find. */
+ depth++;
+ }
+ else {
+ /* Get the size of the encode length and length value. */
+ cnt = i;
+ ret = GetLength(ber, &cnt, &len, berSz);
+ if (ret < 0)
+ return ASN_PARSE_E;
+ cnt -= i;
+
+ /* Check there is enough data to copy out. */
+ if (i + cnt + len > berSz)
+ return ASN_PARSE_E;
+
+ if (der != NULL) {
+ /* Ensure space in DER buffer. */
+ if (j + cnt + len > outSz)
+ return BUFFER_E;
+ /* Copy length and data into DER buffer. */
+ XMEMCPY(der + j, ber + i, cnt + len);
+ }
+ /* Continue conversion after this ASN item. */
+ i += cnt + len;
+ j += cnt + len;
+ }
+ }
+
+ if (depth >= 1)
+ return ASN_PARSE_E;
+
+ /* Return length if no buffer to write to. */
+ if (der == NULL) {
+ *derSz = j;
+ return LENGTH_ONLY_E;
+ }
+
+ return 0;
+}
+#endif
+
+#if defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN)
+
+#if (!defined(NO_RSA) && !defined(HAVE_USER_RSA)) || \
+ defined(HAVE_ECC) || defined(HAVE_ED25519)
+
+#ifdef WOLFSSL_CERT_EXT
+/* Set the DER/BER encoding of the ASN.1 BIT_STRING with a 16-bit value.
+ *
+ * val 16-bit value to encode.
+ * output Buffer to write into.
+ * returns the number of bytes added to the buffer.
+ */
+static word32 SetBitString16Bit(word16 val, byte* output)
+{
+ word32 idx;
+ int len;
+ byte lastByte;
+ byte unusedBits = 0;
+
+ if ((val >> 8) != 0) {
+ len = 2;
+ lastByte = (byte)(val >> 8);
+ }
+ else {
+ len = 1;
+ lastByte = (byte)val;
+ }
+
+ while (((lastByte >> unusedBits) & 0x01) == 0x00)
+ unusedBits++;
+
+ idx = SetBitString(len, unusedBits, output);
+ output[idx++] = (byte)val;
+ if (len > 1)
+ output[idx++] = (byte)(val >> 8);
+
+ return idx;
+}
+#endif /* WOLFSSL_CERT_EXT */
+#endif /* !NO_RSA || HAVE_ECC || HAVE_ED25519 */
+#endif /* WOLFSSL_CERT_GEN || WOLFSSL_KEY_GEN */
+
+
+
+/* hashType */
+#ifdef WOLFSSL_MD2
+ static const byte hashMd2hOid[] = {42, 134, 72, 134, 247, 13, 2, 2};
+#endif
+#ifndef NO_MD5
+ static const byte hashMd5hOid[] = {42, 134, 72, 134, 247, 13, 2, 5};
+#endif
+#ifndef NO_SHA
+ static const byte hashSha1hOid[] = {43, 14, 3, 2, 26};
+#endif
+#ifdef WOLFSSL_SHA224
+ static const byte hashSha224hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 4};
+#endif
+#ifndef NO_SHA256
+ static const byte hashSha256hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 1};
+#endif
+#ifdef WOLFSSL_SHA384
+ static const byte hashSha384hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 2};
+#endif
+#ifdef WOLFSSL_SHA512
+ static const byte hashSha512hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 3};
+#endif
+
+/* hmacType */
+#ifndef NO_HMAC
+ #ifdef WOLFSSL_SHA224
+ static const byte hmacSha224Oid[] = {42, 134, 72, 134, 247, 13, 2, 8};
+ #endif
+ #ifndef NO_SHA256
+ static const byte hmacSha256Oid[] = {42, 134, 72, 134, 247, 13, 2, 9};
+ #endif
+ #ifdef WOLFSSL_SHA384
+ static const byte hmacSha384Oid[] = {42, 134, 72, 134, 247, 13, 2, 10};
+ #endif
+ #ifdef WOLFSSL_SHA512
+ static const byte hmacSha512Oid[] = {42, 134, 72, 134, 247, 13, 2, 11};
+ #endif
+#endif
+
+/* sigType */
+#if !defined(NO_DSA) && !defined(NO_SHA)
+ static const byte sigSha1wDsaOid[] = {42, 134, 72, 206, 56, 4, 3};
+#endif /* NO_DSA */
+#ifndef NO_RSA
+ #ifdef WOLFSSL_MD2
+ static const byte sigMd2wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 2};
+ #endif
+ #ifndef NO_MD5
+ static const byte sigMd5wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 4};
+ #endif
+ #ifndef NO_SHA
+ static const byte sigSha1wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 5};
+ #endif
+ #ifdef WOLFSSL_SHA224
+ static const byte sigSha224wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,14};
+ #endif
+ #ifndef NO_SHA256
+ static const byte sigSha256wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,11};
+ #endif
+ #ifdef WOLFSSL_SHA384
+ static const byte sigSha384wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,12};
+ #endif
+ #ifdef WOLFSSL_SHA512
+ static const byte sigSha512wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,13};
+ #endif
+#endif /* NO_RSA */
+#ifdef HAVE_ECC
+ #ifndef NO_SHA
+ static const byte sigSha1wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 1};
+ #endif
+ #ifdef WOLFSSL_SHA224
+ static const byte sigSha224wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 1};
+ #endif
+ #ifndef NO_SHA256
+ static const byte sigSha256wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 2};
+ #endif
+ #ifdef WOLFSSL_SHA384
+ static const byte sigSha384wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 3};
+ #endif
+ #ifdef WOLFSSL_SHA512
+ static const byte sigSha512wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 4};
+ #endif
+#endif /* HAVE_ECC */
+#ifdef HAVE_ED25519
+ static const byte sigEd25519Oid[] = {43, 101, 112};
+#endif /* HAVE_ED25519 */
+
+/* keyType */
+#ifndef NO_DSA
+ static const byte keyDsaOid[] = {42, 134, 72, 206, 56, 4, 1};
+#endif /* NO_DSA */
+#ifndef NO_RSA
+ static const byte keyRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 1};
+#endif /* NO_RSA */
+#ifdef HAVE_NTRU
+ static const byte keyNtruOid[] = {43, 6, 1, 4, 1, 193, 22, 1, 1, 1, 1};
+#endif /* HAVE_NTRU */
+#ifdef HAVE_ECC
+ static const byte keyEcdsaOid[] = {42, 134, 72, 206, 61, 2, 1};
+#endif /* HAVE_ECC */
+#ifdef HAVE_ED25519
+ static const byte keyEd25519Oid[] = {43, 101, 112};
+#endif /* HAVE_ED25519 */
+
+/* curveType */
+#ifdef HAVE_ECC
+ /* See "ecc_sets" table in ecc.c */
+#endif /* HAVE_ECC */
+
+#ifdef HAVE_AES_CBC
+/* blkType */
+ #ifdef WOLFSSL_AES_128
+ static const byte blkAes128CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 2};
+ #endif
+ #ifdef WOLFSSL_AES_192
+ static const byte blkAes192CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 22};
+ #endif
+ #ifdef WOLFSSL_AES_256
+ static const byte blkAes256CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 42};
+ #endif
+#endif /* HAVE_AES_CBC */
+
+#ifndef NO_DES3
+ static const byte blkDesCbcOid[] = {43, 14, 3, 2, 7};
+ static const byte blkDes3CbcOid[] = {42, 134, 72, 134, 247, 13, 3, 7};
+#endif
+
+/* keyWrapType */
+#ifdef WOLFSSL_AES_128
+ static const byte wrapAes128Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 5};
+#endif
+#ifdef WOLFSSL_AES_192
+ static const byte wrapAes192Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 25};
+#endif
+#ifdef WOLFSSL_AES_256
+ static const byte wrapAes256Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 45};
+#endif
+
+/* cmsKeyAgreeType */
+#ifndef NO_SHA
+ static const byte dhSinglePass_stdDH_sha1kdf_Oid[] =
+ {43, 129, 5, 16, 134, 72, 63, 0, 2};
+#endif
+#ifdef WOLFSSL_SHA224
+ static const byte dhSinglePass_stdDH_sha224kdf_Oid[] = {43, 129, 4, 1, 11, 0};
+#endif
+#ifndef NO_SHA256
+ static const byte dhSinglePass_stdDH_sha256kdf_Oid[] = {43, 129, 4, 1, 11, 1};
+#endif
+#ifdef WOLFSSL_SHA384
+ static const byte dhSinglePass_stdDH_sha384kdf_Oid[] = {43, 129, 4, 1, 11, 2};
+#endif
+#ifdef WOLFSSL_SHA512
+ static const byte dhSinglePass_stdDH_sha512kdf_Oid[] = {43, 129, 4, 1, 11, 3};
+#endif
+
+/* ocspType */
+#ifdef HAVE_OCSP
+ static const byte ocspBasicOid[] = {43, 6, 1, 5, 5, 7, 48, 1, 1};
+ static const byte ocspNonceOid[] = {43, 6, 1, 5, 5, 7, 48, 1, 2};
+#endif /* HAVE_OCSP */
+
+/* certExtType */
+static const byte extBasicCaOid[] = {85, 29, 19};
+static const byte extAltNamesOid[] = {85, 29, 17};
+static const byte extCrlDistOid[] = {85, 29, 31};
+static const byte extAuthInfoOid[] = {43, 6, 1, 5, 5, 7, 1, 1};
+static const byte extAuthKeyOid[] = {85, 29, 35};
+static const byte extSubjKeyOid[] = {85, 29, 14};
+static const byte extCertPolicyOid[] = {85, 29, 32};
+static const byte extKeyUsageOid[] = {85, 29, 15};
+static const byte extInhibitAnyOid[] = {85, 29, 54};
+static const byte extExtKeyUsageOid[] = {85, 29, 37};
+#ifndef IGNORE_NAME_CONSTRAINTS
+ static const byte extNameConsOid[] = {85, 29, 30};
+#endif
+
+/* certAuthInfoType */
+#ifdef HAVE_OCSP
+ static const byte extAuthInfoOcspOid[] = {43, 6, 1, 5, 5, 7, 48, 1};
+#endif
+static const byte extAuthInfoCaIssuerOid[] = {43, 6, 1, 5, 5, 7, 48, 2};
+
+/* certPolicyType */
+static const byte extCertPolicyAnyOid[] = {85, 29, 32, 0};
+
+/* certKeyUseType */
+static const byte extAltNamesHwNameOid[] = {43, 6, 1, 5, 5, 7, 8, 4};
+
+/* certKeyUseType */
+static const byte extExtKeyUsageAnyOid[] = {85, 29, 37, 0};
+static const byte extExtKeyUsageServerAuthOid[] = {43, 6, 1, 5, 5, 7, 3, 1};
+static const byte extExtKeyUsageClientAuthOid[] = {43, 6, 1, 5, 5, 7, 3, 2};
+static const byte extExtKeyUsageCodeSigningOid[] = {43, 6, 1, 5, 5, 7, 3, 3};
+static const byte extExtKeyUsageEmailProtectOid[] = {43, 6, 1, 5, 5, 7, 3, 4};
+static const byte extExtKeyUsageTimestampOid[] = {43, 6, 1, 5, 5, 7, 3, 8};
+static const byte extExtKeyUsageOcspSignOid[] = {43, 6, 1, 5, 5, 7, 3, 9};
+
+/* kdfType */
+static const byte pbkdf2Oid[] = {42, 134, 72, 134, 247, 13, 1, 5, 12};
+
+/* PKCS5 */
+#if !defined(NO_DES3) && !defined(NO_SHA)
+static const byte pbeSha1Des[] = {42, 134, 72, 134, 247, 13, 1, 5, 10};
+#endif
+
+/* PKCS12 */
+#if !defined(NO_RC4) && !defined(NO_SHA)
+static const byte pbeSha1RC4128[] = {42, 134, 72, 134, 247, 13, 1, 12, 1, 1};
+#endif
+#if !defined(NO_DES3) && !defined(NO_SHA)
+static const byte pbeSha1Des3[] = {42, 134, 72, 134, 247, 13, 1, 12, 1, 3};
+#endif
+
+
+/* returns a pointer to the OID string on success and NULL on fail */
+const byte* OidFromId(word32 id, word32 type, word32* oidSz)
+{
+ const byte* oid = NULL;
+
+ *oidSz = 0;
+
+ switch (type) {
+
+ case oidHashType:
+ switch (id) {
+ #ifdef WOLFSSL_MD2
+ case MD2h:
+ oid = hashMd2hOid;
+ *oidSz = sizeof(hashMd2hOid);
+ break;
+ #endif
+ #ifndef NO_MD5
+ case MD5h:
+ oid = hashMd5hOid;
+ *oidSz = sizeof(hashMd5hOid);
+ break;
+ #endif
+ #ifndef NO_SHA
+ case SHAh:
+ oid = hashSha1hOid;
+ *oidSz = sizeof(hashSha1hOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case SHA224h:
+ oid = hashSha224hOid;
+ *oidSz = sizeof(hashSha224hOid);
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case SHA256h:
+ oid = hashSha256hOid;
+ *oidSz = sizeof(hashSha256hOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case SHA384h:
+ oid = hashSha384hOid;
+ *oidSz = sizeof(hashSha384hOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case SHA512h:
+ oid = hashSha512hOid;
+ *oidSz = sizeof(hashSha512hOid);
+ break;
+ #endif
+ }
+ break;
+
+ case oidSigType:
+ switch (id) {
+ #if !defined(NO_DSA) && !defined(NO_SHA)
+ case CTC_SHAwDSA:
+ oid = sigSha1wDsaOid;
+ *oidSz = sizeof(sigSha1wDsaOid);
+ break;
+ #endif /* NO_DSA */
+ #ifndef NO_RSA
+ #ifdef WOLFSSL_MD2
+ case CTC_MD2wRSA:
+ oid = sigMd2wRsaOid;
+ *oidSz = sizeof(sigMd2wRsaOid);
+ break;
+ #endif
+ #ifndef NO_MD5
+ case CTC_MD5wRSA:
+ oid = sigMd5wRsaOid;
+ *oidSz = sizeof(sigMd5wRsaOid);
+ break;
+ #endif
+ #ifndef NO_SHA
+ case CTC_SHAwRSA:
+ oid = sigSha1wRsaOid;
+ *oidSz = sizeof(sigSha1wRsaOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case CTC_SHA224wRSA:
+ oid = sigSha224wRsaOid;
+ *oidSz = sizeof(sigSha224wRsaOid);
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case CTC_SHA256wRSA:
+ oid = sigSha256wRsaOid;
+ *oidSz = sizeof(sigSha256wRsaOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case CTC_SHA384wRSA:
+ oid = sigSha384wRsaOid;
+ *oidSz = sizeof(sigSha384wRsaOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case CTC_SHA512wRSA:
+ oid = sigSha512wRsaOid;
+ *oidSz = sizeof(sigSha512wRsaOid);
+ break;
+ #endif /* WOLFSSL_SHA512 */
+ #endif /* NO_RSA */
+ #ifdef HAVE_ECC
+ #ifndef NO_SHA
+ case CTC_SHAwECDSA:
+ oid = sigSha1wEcdsaOid;
+ *oidSz = sizeof(sigSha1wEcdsaOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case CTC_SHA224wECDSA:
+ oid = sigSha224wEcdsaOid;
+ *oidSz = sizeof(sigSha224wEcdsaOid);
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case CTC_SHA256wECDSA:
+ oid = sigSha256wEcdsaOid;
+ *oidSz = sizeof(sigSha256wEcdsaOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case CTC_SHA384wECDSA:
+ oid = sigSha384wEcdsaOid;
+ *oidSz = sizeof(sigSha384wEcdsaOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case CTC_SHA512wECDSA:
+ oid = sigSha512wEcdsaOid;
+ *oidSz = sizeof(sigSha512wEcdsaOid);
+ break;
+ #endif
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+ case CTC_ED25519:
+ oid = sigEd25519Oid;
+ *oidSz = sizeof(sigEd25519Oid);
+ break;
+ #endif
+ default:
+ break;
+ }
+ break;
+
+ case oidKeyType:
+ switch (id) {
+ #ifndef NO_DSA
+ case DSAk:
+ oid = keyDsaOid;
+ *oidSz = sizeof(keyDsaOid);
+ break;
+ #endif /* NO_DSA */
+ #ifndef NO_RSA
+ case RSAk:
+ oid = keyRsaOid;
+ *oidSz = sizeof(keyRsaOid);
+ break;
+ #endif /* NO_RSA */
+ #ifdef HAVE_NTRU
+ case NTRUk:
+ oid = keyNtruOid;
+ *oidSz = sizeof(keyNtruOid);
+ break;
+ #endif /* HAVE_NTRU */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ oid = keyEcdsaOid;
+ *oidSz = sizeof(keyEcdsaOid);
+ break;
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+ case ED25519k:
+ oid = keyEd25519Oid;
+ *oidSz = sizeof(keyEd25519Oid);
+ break;
+ #endif /* HAVE_ED25519 */
+ default:
+ break;
+ }
+ break;
+
+ #ifdef HAVE_ECC
+ case oidCurveType:
+ if (wc_ecc_get_oid(id, &oid, oidSz) < 0) {
+ WOLFSSL_MSG("ECC OID not found");
+ }
+ break;
+ #endif /* HAVE_ECC */
+
+ case oidBlkType:
+ switch (id) {
+ #ifdef HAVE_AES_CBC
+ #ifdef WOLFSSL_AES_128
+ case AES128CBCb:
+ oid = blkAes128CbcOid;
+ *oidSz = sizeof(blkAes128CbcOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_AES_192
+ case AES192CBCb:
+ oid = blkAes192CbcOid;
+ *oidSz = sizeof(blkAes192CbcOid);
+ break;
+ #endif
+ #ifdef WOLFSSL_AES_256
+ case AES256CBCb:
+ oid = blkAes256CbcOid;
+ *oidSz = sizeof(blkAes256CbcOid);
+ break;
+ #endif
+ #endif /* HAVE_AES_CBC */
+ #ifndef NO_DES3
+ case DESb:
+ oid = blkDesCbcOid;
+ *oidSz = sizeof(blkDesCbcOid);
+ break;
+ case DES3b:
+ oid = blkDes3CbcOid;
+ *oidSz = sizeof(blkDes3CbcOid);
+ break;
+ #endif /* !NO_DES3 */
+ }
+ break;
+
+ #ifdef HAVE_OCSP
+ case oidOcspType:
+ switch (id) {
+ case OCSP_BASIC_OID:
+ oid = ocspBasicOid;
+ *oidSz = sizeof(ocspBasicOid);
+ break;
+ case OCSP_NONCE_OID:
+ oid = ocspNonceOid;
+ *oidSz = sizeof(ocspNonceOid);
+ break;
+ }
+ break;
+ #endif /* HAVE_OCSP */
+
+ case oidCertExtType:
+ switch (id) {
+ case BASIC_CA_OID:
+ oid = extBasicCaOid;
+ *oidSz = sizeof(extBasicCaOid);
+ break;
+ case ALT_NAMES_OID:
+ oid = extAltNamesOid;
+ *oidSz = sizeof(extAltNamesOid);
+ break;
+ case CRL_DIST_OID:
+ oid = extCrlDistOid;
+ *oidSz = sizeof(extCrlDistOid);
+ break;
+ case AUTH_INFO_OID:
+ oid = extAuthInfoOid;
+ *oidSz = sizeof(extAuthInfoOid);
+ break;
+ case AUTH_KEY_OID:
+ oid = extAuthKeyOid;
+ *oidSz = sizeof(extAuthKeyOid);
+ break;
+ case SUBJ_KEY_OID:
+ oid = extSubjKeyOid;
+ *oidSz = sizeof(extSubjKeyOid);
+ break;
+ case CERT_POLICY_OID:
+ oid = extCertPolicyOid;
+ *oidSz = sizeof(extCertPolicyOid);
+ break;
+ case KEY_USAGE_OID:
+ oid = extKeyUsageOid;
+ *oidSz = sizeof(extKeyUsageOid);
+ break;
+ case INHIBIT_ANY_OID:
+ oid = extInhibitAnyOid;
+ *oidSz = sizeof(extInhibitAnyOid);
+ break;
+ case EXT_KEY_USAGE_OID:
+ oid = extExtKeyUsageOid;
+ *oidSz = sizeof(extExtKeyUsageOid);
+ break;
+ #ifndef IGNORE_NAME_CONSTRAINTS
+ case NAME_CONS_OID:
+ oid = extNameConsOid;
+ *oidSz = sizeof(extNameConsOid);
+ break;
+ #endif
+ }
+ break;
+
+ case oidCertAuthInfoType:
+ switch (id) {
+ #ifdef HAVE_OCSP
+ case AIA_OCSP_OID:
+ oid = extAuthInfoOcspOid;
+ *oidSz = sizeof(extAuthInfoOcspOid);
+ break;
+ #endif
+ case AIA_CA_ISSUER_OID:
+ oid = extAuthInfoCaIssuerOid;
+ *oidSz = sizeof(extAuthInfoCaIssuerOid);
+ break;
+ }
+ break;
+
+ case oidCertPolicyType:
+ switch (id) {
+ case CP_ANY_OID:
+ oid = extCertPolicyAnyOid;
+ *oidSz = sizeof(extCertPolicyAnyOid);
+ break;
+ }
+ break;
+
+ case oidCertAltNameType:
+ switch (id) {
+ case HW_NAME_OID:
+ oid = extAltNamesHwNameOid;
+ *oidSz = sizeof(extAltNamesHwNameOid);
+ break;
+ }
+ break;
+
+ case oidCertKeyUseType:
+ switch (id) {
+ case EKU_ANY_OID:
+ oid = extExtKeyUsageAnyOid;
+ *oidSz = sizeof(extExtKeyUsageAnyOid);
+ break;
+ case EKU_SERVER_AUTH_OID:
+ oid = extExtKeyUsageServerAuthOid;
+ *oidSz = sizeof(extExtKeyUsageServerAuthOid);
+ break;
+ case EKU_CLIENT_AUTH_OID:
+ oid = extExtKeyUsageClientAuthOid;
+ *oidSz = sizeof(extExtKeyUsageClientAuthOid);
+ break;
+ case EKU_CODESIGNING_OID:
+ oid = extExtKeyUsageCodeSigningOid;
+ *oidSz = sizeof(extExtKeyUsageCodeSigningOid);
+ break;
+ case EKU_EMAILPROTECT_OID:
+ oid = extExtKeyUsageEmailProtectOid;
+ *oidSz = sizeof(extExtKeyUsageEmailProtectOid);
+ break;
+ case EKU_TIMESTAMP_OID:
+ oid = extExtKeyUsageTimestampOid;
+ *oidSz = sizeof(extExtKeyUsageTimestampOid);
+ break;
+ case EKU_OCSP_SIGN_OID:
+ oid = extExtKeyUsageOcspSignOid;
+ *oidSz = sizeof(extExtKeyUsageOcspSignOid);
+ break;
+ }
+ break;
+
+ case oidKdfType:
+ switch (id) {
+ case PBKDF2_OID:
+ oid = pbkdf2Oid;
+ *oidSz = sizeof(pbkdf2Oid);
+ break;
+ }
+ break;
+
+ case oidPBEType:
+ switch (id) {
+ #if !defined(NO_SHA) && !defined(NO_RC4)
+ case PBE_SHA1_RC4_128:
+ oid = pbeSha1RC4128;
+ *oidSz = sizeof(pbeSha1RC4128);
+ break;
+ #endif
+ #if !defined(NO_SHA) && !defined(NO_DES3)
+ case PBE_SHA1_DES:
+ oid = pbeSha1Des;
+ *oidSz = sizeof(pbeSha1Des);
+ break;
+
+ #endif
+ #if !defined(NO_SHA) && !defined(NO_DES3)
+ case PBE_SHA1_DES3:
+ oid = pbeSha1Des3;
+ *oidSz = sizeof(pbeSha1Des3);
+ break;
+ #endif
+ }
+ break;
+
+ case oidKeyWrapType:
+ switch (id) {
+ #ifdef WOLFSSL_AES_128
+ case AES128_WRAP:
+ oid = wrapAes128Oid;
+ *oidSz = sizeof(wrapAes128Oid);
+ break;
+ #endif
+ #ifdef WOLFSSL_AES_192
+ case AES192_WRAP:
+ oid = wrapAes192Oid;
+ *oidSz = sizeof(wrapAes192Oid);
+ break;
+ #endif
+ #ifdef WOLFSSL_AES_256
+ case AES256_WRAP:
+ oid = wrapAes256Oid;
+ *oidSz = sizeof(wrapAes256Oid);
+ break;
+ #endif
+ }
+ break;
+
+ case oidCmsKeyAgreeType:
+ switch (id) {
+ #ifndef NO_SHA
+ case dhSinglePass_stdDH_sha1kdf_scheme:
+ oid = dhSinglePass_stdDH_sha1kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha1kdf_Oid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case dhSinglePass_stdDH_sha224kdf_scheme:
+ oid = dhSinglePass_stdDH_sha224kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha224kdf_Oid);
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case dhSinglePass_stdDH_sha256kdf_scheme:
+ oid = dhSinglePass_stdDH_sha256kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha256kdf_Oid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case dhSinglePass_stdDH_sha384kdf_scheme:
+ oid = dhSinglePass_stdDH_sha384kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha384kdf_Oid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case dhSinglePass_stdDH_sha512kdf_scheme:
+ oid = dhSinglePass_stdDH_sha512kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha512kdf_Oid);
+ break;
+ #endif
+ }
+ break;
+
+#ifndef NO_HMAC
+ case oidHmacType:
+ switch (id) {
+ #ifdef WOLFSSL_SHA224
+ case HMAC_SHA224_OID:
+ oid = hmacSha224Oid;
+ *oidSz = sizeof(hmacSha224Oid);
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case HMAC_SHA256_OID:
+ oid = hmacSha256Oid;
+ *oidSz = sizeof(hmacSha256Oid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case HMAC_SHA384_OID:
+ oid = hmacSha384Oid;
+ *oidSz = sizeof(hmacSha384Oid);
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case HMAC_SHA512_OID:
+ oid = hmacSha512Oid;
+ *oidSz = sizeof(hmacSha512Oid);
+ break;
+ #endif
+ }
+ break;
+#endif /* !NO_HMAC */
+
+ case oidIgnoreType:
+ default:
+ break;
+ }
+
+ return oid;
+}
+
+#ifdef HAVE_OID_ENCODING
+int EncodeObjectId(const word16* in, word32 inSz, byte* out, word32* outSz)
+{
+ int i, x, len;
+ word32 d, t;
+
+ /* check args */
+ if (in == NULL || outSz == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ /* compute length of encoded OID */
+ d = (in[0] * 40) + in[1];
+ len = 0;
+ for (i = 1; i < (int)inSz; i++) {
+ x = 0;
+ t = d;
+ while (t) {
+ x++;
+ t >>= 1;
+ }
+ len += (x / 7) + ((x % 7) ? 1 : 0) + (d == 0 ? 1 : 0);
+
+ if (i < (int)inSz - 1) {
+ d = in[i + 1];
+ }
+ }
+
+ if (out) {
+ /* verify length */
+ if ((int)*outSz < len) {
+ return BUFFER_E; /* buffer provided is not large enough */
+ }
+
+ /* calc first byte */
+ d = (in[0] * 40) + in[1];
+
+ /* encode bytes */
+ x = 0;
+ for (i = 1; i < (int)inSz; i++) {
+ if (d) {
+ int y = x, z;
+ byte mask = 0;
+ while (d) {
+ out[x++] = (byte)((d & 0x7F) | mask);
+ d >>= 7;
+ mask |= 0x80; /* upper bit is set on all but the last byte */
+ }
+ /* now swap bytes y...x-1 */
+ z = x - 1;
+ while (y < z) {
+ mask = out[y];
+ out[y] = out[z];
+ out[z] = mask;
+ ++y;
+ --z;
+ }
+ }
+ else {
+ out[x++] = 0x00; /* zero value */
+ }
+
+ /* next word */
+ if (i < (int)inSz - 1) {
+ d = in[i + 1];
+ }
+ }
+ }
+
+ /* return length */
+ *outSz = len;
+
+ return 0;
+}
+#endif /* HAVE_OID_ENCODING */
+
+#ifdef HAVE_OID_DECODING
+int DecodeObjectId(const byte* in, word32 inSz, word16* out, word32* outSz)
+{
+ int x = 0, y = 0;
+ word32 t = 0;
+
+ /* check args */
+ if (in == NULL || outSz == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ /* decode bytes */
+ while (inSz--) {
+ t = (t << 7) | (in[x] & 0x7F);
+ if (!(in[x] & 0x80)) {
+ if (y >= (int)*outSz) {
+ return BUFFER_E;
+ }
+ if (y == 0) {
+ out[0] = (t / 40);
+ out[1] = (t % 40);
+ y = 2;
+ }
+ else {
+ out[y++] = t;
+ }
+ t = 0; /* reset tmp */
+ }
+ x++;
+ }
+
+ /* return length */
+ *outSz = y;
+
+ return 0;
+}
+#endif /* HAVE_OID_DECODING */
+
+/* Get the DER/BER encoding of an ASN.1 OBJECT_ID header.
+ *
+ * input Buffer holding DER/BER encoded data.
+ * inOutIdx Current index into buffer to parse.
+ * len The number of bytes in the ASN.1 data.
+ * maxIdx Length of data in buffer.
+ * returns BUFFER_E when there is not enough data to parse.
+ * ASN_OBJECt_ID_E when the OBJECT_ID tag is not found.
+ * ASN_PARSE_E when length is invalid.
+ * Otherwise, 0 to indicate success.
+ */
+static int GetASNObjectId(const byte* input, word32* inOutIdx, int* len,
+ word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ byte b;
+ int length;
+
+ if ((idx + 1) > maxIdx)
+ return BUFFER_E;
+
+ b = input[idx++];
+ if (b != ASN_OBJECT_ID)
+ return ASN_OBJECT_ID_E;
+
+ if (GetLength(input, &idx, &length, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ *len = length;
+ *inOutIdx = idx;
+ return 0;
+}
+
+/* Set the DER/BER encoding of the ASN.1 OBJECT_ID header.
+ *
+ * len Length of the OBJECT_ID data.
+ * output Buffer to write into.
+ * returns the number of bytes added to the buffer.
+ */
+static int SetObjectId(int len, byte* output)
+{
+ int idx = 0;
+
+ output[idx++] = ASN_OBJECT_ID;
+ idx += SetLength(len, output + idx);
+
+ return idx;
+}
+
+int GetObjectId(const byte* input, word32* inOutIdx, word32* oid,
+ word32 oidType, word32 maxIdx)
+{
+ int ret = 0, length;
+ word32 idx = *inOutIdx;
+#ifndef NO_VERIFY_OID
+ word32 actualOidSz = 0;
+ const byte* actualOid;
+#endif /* NO_VERIFY_OID */
+
+ (void)oidType;
+ WOLFSSL_ENTER("GetObjectId()");
+ *oid = 0;
+
+ ret = GetASNObjectId(input, &idx, &length, maxIdx);
+ if (ret != 0)
+ return ret;
+
+#ifndef NO_VERIFY_OID
+ actualOid = &input[idx];
+ if (length > 0)
+ actualOidSz = (word32)length;
+#endif /* NO_VERIFY_OID */
+
+ while (length--) {
+ /* odd HC08 compiler behavior here when input[idx++] */
+ *oid += (word32)input[idx];
+ idx++;
+ }
+ /* just sum it up for now */
+
+ *inOutIdx = idx;
+
+#ifndef NO_VERIFY_OID
+ {
+ const byte* checkOid = NULL;
+ word32 checkOidSz;
+ #ifdef ASN_DUMP_OID
+ word32 i;
+ #endif
+
+ if (oidType != oidIgnoreType) {
+ checkOid = OidFromId(*oid, oidType, &checkOidSz);
+
+ #ifdef ASN_DUMP_OID
+ /* support for dumping OID information */
+ printf("OID (Type %d, Sz %d, Sum %d): ", oidType, actualOidSz, *oid);
+ for (i=0; i<actualOidSz; i++) {
+ printf("%d, ", actualOid[i]);
+ }
+ printf("\n");
+ #ifdef HAVE_OID_DECODING
+ {
+ word16 decOid[16];
+ word32 decOidSz = sizeof(decOid);
+ ret = DecodeObjectId(actualOid, actualOidSz, decOid, &decOidSz);
+ if (ret == 0) {
+ printf(" Decoded (Sz %d): ", decOidSz);
+ for (i=0; i<decOidSz; i++) {
+ printf("%d.", decOid[i]);
+ }
+ printf("\n");
+ }
+ else {
+ printf("DecodeObjectId failed: %d\n", ret);
+ }
+ }
+ #endif /* HAVE_OID_DECODING */
+ #endif /* ASN_DUMP_OID */
+
+ if (checkOid != NULL &&
+ (checkOidSz != actualOidSz ||
+ XMEMCMP(actualOid, checkOid, checkOidSz) != 0)) {
+ WOLFSSL_MSG("OID Check Failed");
+ return ASN_UNKNOWN_OID_E;
+ }
+ }
+ }
+#endif /* NO_VERIFY_OID */
+
+ return ret;
+}
+
+static int SkipObjectId(const byte* input, word32* inOutIdx, word32 maxIdx)
+{
+ word32 idx = *inOutIdx;
+ int length;
+ int ret;
+
+ ret = GetASNObjectId(input, &idx, &length, maxIdx);
+ if (ret != 0)
+ return ret;
+
+ idx += length;
+ *inOutIdx = idx;
+
+ return 0;
+}
+
+WOLFSSL_LOCAL int GetAlgoId(const byte* input, word32* inOutIdx, word32* oid,
+ word32 oidType, word32 maxIdx)
+{
+ int length;
+ word32 idx = *inOutIdx;
+ int ret;
+ *oid = 0;
+
+ WOLFSSL_ENTER("GetAlgoId");
+
+ if (GetSequence(input, &idx, &length, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if (GetObjectId(input, &idx, oid, oidType, maxIdx) < 0)
+ return ASN_OBJECT_ID_E;
+
+ /* could have NULL tag and 0 terminator, but may not */
+ if (idx < maxIdx && input[idx] == ASN_TAG_NULL) {
+ ret = GetASNNull(input, &idx, maxIdx);
+ if (ret != 0)
+ return ret;
+ }
+
+ *inOutIdx = idx;
+
+ return 0;
+}
+
+#ifndef NO_RSA
+
+#ifndef HAVE_USER_RSA
+int wc_RsaPrivateKeyDecode(const byte* input, word32* inOutIdx, RsaKey* key,
+ word32 inSz)
+{
+ int version, length;
+
+ if (inOutIdx == NULL) {
+ return BAD_FUNC_ARG;
+ }
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
+ return ASN_PARSE_E;
+
+ key->type = RSA_PRIVATE;
+
+ if (GetInt(&key->n, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->e, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->d, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->q, input, inOutIdx, inSz) < 0) return ASN_RSA_KEY_E;
+#if defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA) || !defined(RSA_LOW_MEM)
+ if (GetInt(&key->dP, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->dQ, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->u, input, inOutIdx, inSz) < 0 ) return ASN_RSA_KEY_E;
+#else
+ if (SkipInt(input, inOutIdx, inSz) < 0 ||
+ SkipInt(input, inOutIdx, inSz) < 0 ||
+ SkipInt(input, inOutIdx, inSz) < 0 ) return ASN_RSA_KEY_E;
+#endif
+
+#ifdef WOLFSSL_XILINX_CRYPT
+ if (wc_InitRsaHw(key) != 0) {
+ return BAD_STATE_E;
+ }
+#endif
+
+ return 0;
+}
+#endif /* HAVE_USER_RSA */
+#endif /* NO_RSA */
+
+/* Remove PKCS8 header, place inOutIdx at beginning of traditional,
+ * return traditional length on success, negative on error */
+int ToTraditionalInline(const byte* input, word32* inOutIdx, word32 sz)
+{
+ word32 idx, oid;
+ int version, length;
+ int ret;
+
+ if (input == NULL || inOutIdx == NULL)
+ return BAD_FUNC_ARG;
+
+ idx = *inOutIdx;
+
+ if (GetSequence(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetMyVersion(input, &idx, &version, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetAlgoId(input, &idx, &oid, oidKeyType, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (input[idx] == ASN_OBJECT_ID) {
+ if (SkipObjectId(input, &idx, sz) < 0)
+ return ASN_PARSE_E;
+ }
+
+ ret = GetOctetString(input, &idx, &length, sz);
+ if (ret < 0)
+ return ret;
+
+ *inOutIdx = idx;
+
+ return length;
+}
+
+/* Remove PKCS8 header, move beginning of traditional to beginning of input */
+int ToTraditional(byte* input, word32 sz)
+{
+ word32 inOutIdx = 0;
+ int length;
+
+ if (input == NULL)
+ return BAD_FUNC_ARG;
+
+ length = ToTraditionalInline(input, &inOutIdx, sz);
+ if (length < 0)
+ return length;
+
+ XMEMMOVE(input, input + inOutIdx, length);
+
+ return length;
+}
+
+
+/* find beginning of traditional key inside PKCS#8 unencrypted buffer
+ * return traditional length on success, with inOutIdx at beginning of
+ * traditional
+ * return negative on failure/error */
+int wc_GetPkcs8TraditionalOffset(byte* input, word32* inOutIdx, word32 sz)
+{
+ int length;
+
+ if (input == NULL || inOutIdx == NULL || (*inOutIdx > sz))
+ return BAD_FUNC_ARG;
+
+ length = ToTraditionalInline(input, inOutIdx, sz);
+
+ return length;
+}
+
+
+/* PKCS#8 from RFC 5208
+ * This function takes in a DER key and converts it to PKCS#8 format. Used
+ * in creating PKCS#12 shrouded key bags.
+ * Reverse of ToTraditional
+ *
+ * PrivateKeyInfo ::= SEQUENCE {
+ * version Version,
+ * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier,
+ * privateKey PrivateKey,
+ * attributes optional
+ * }
+ * Version ::= INTEGER
+ * PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier
+ * PrivateKey ::= OCTET STRING
+ *
+ * out buffer to place result in
+ * outSz size of out buffer
+ * key buffer with DER key
+ * keySz size of key buffer
+ * algoID algorithm ID i.e. RSAk
+ * curveOID ECC curve oid if used. Should be NULL for RSA keys.
+ * oidSz size of curve oid. Is set to 0 if curveOID is NULL.
+ *
+ * Returns the size of PKCS#8 placed into out. In error cases returns negative
+ * values.
+ */
+int wc_CreatePKCS8Key(byte* out, word32* outSz, byte* key, word32 keySz,
+ int algoID, const byte* curveOID, word32 oidSz)
+{
+ word32 keyIdx = 0;
+ word32 tmpSz = 0;
+ word32 sz;
+
+
+ /* If out is NULL then return the max size needed
+ * + 2 for ASN_OBJECT_ID and ASN_OCTET_STRING tags */
+ if (out == NULL && outSz != NULL) {
+ *outSz = keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
+ + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 2;
+
+ if (curveOID != NULL)
+ *outSz += oidSz + MAX_LENGTH_SZ + 1;
+
+ WOLFSSL_MSG("Checking size of PKCS8");
+
+ return LENGTH_ONLY_E;
+ }
+
+ WOLFSSL_ENTER("wc_CreatePKCS8Key()");
+
+ if (key == NULL || out == NULL || outSz == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ /* check the buffer has enough room for largest possible size */
+ if (curveOID != NULL) {
+ if (*outSz < (keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
+ + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 3 + oidSz + MAX_LENGTH_SZ))
+ return BUFFER_E;
+ }
+ else {
+ oidSz = 0; /* with no curveOID oid size must be 0 */
+ if (*outSz < (keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
+ + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 2))
+ return BUFFER_E;
+ }
+
+ /* PrivateKeyInfo ::= SEQUENCE */
+ keyIdx += MAX_SEQ_SZ; /* save room for sequence */
+
+ /* version Version
+ * no header information just INTEGER */
+ sz = SetMyVersion(PKCS8v0, out + keyIdx, 0);
+ tmpSz += sz; keyIdx += sz;
+
+ /* privateKeyAlgorithm PrivateKeyAlgorithmIdentifier */
+ sz = 0; /* set sz to 0 and get privateKey oid buffer size needed */
+ if (curveOID != NULL && oidSz > 0) {
+ byte buf[MAX_LENGTH_SZ];
+ sz = SetLength(oidSz, buf);
+ sz += 1; /* plus one for ASN object id */
+ }
+ sz = SetAlgoID(algoID, out + keyIdx, oidKeyType, oidSz + sz);
+ tmpSz += sz; keyIdx += sz;
+
+ /* privateKey PrivateKey *
+ * pkcs8 ecc uses slightly different format. Places curve oid in
+ * buffer */
+ if (curveOID != NULL && oidSz > 0) {
+ sz = SetObjectId(oidSz, out + keyIdx);
+ keyIdx += sz; tmpSz += sz;
+ XMEMCPY(out + keyIdx, curveOID, oidSz);
+ keyIdx += oidSz; tmpSz += oidSz;
+ }
+
+ sz = SetOctetString(keySz, out + keyIdx);
+ keyIdx += sz; tmpSz += sz;
+ XMEMCPY(out + keyIdx, key, keySz);
+ tmpSz += keySz;
+
+ /* attributes optional
+ * No attributes currently added */
+
+ /* rewind and add sequence */
+ sz = SetSequence(tmpSz, out);
+ XMEMMOVE(out + sz, out + MAX_SEQ_SZ, tmpSz);
+
+ return tmpSz + sz;
+}
+
+
+/* check that the private key is a pair for the public key in certificate
+ * return 1 (true) on match
+ * return 0 or negative value on failure/error
+ *
+ * key : buffer holding DER fromat key
+ * keySz : size of key buffer
+ * der : a initialized and parsed DecodedCert holding a certificate */
+int wc_CheckPrivateKey(byte* key, word32 keySz, DecodedCert* der)
+{
+ int ret;
+ (void)keySz;
+
+ if (key == NULL || der == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ #if !defined(NO_RSA)
+ /* test if RSA key */
+ if (der->keyOID == RSAk) {
+ #ifdef WOLFSSL_SMALL_STACK
+ RsaKey* a = NULL;
+ RsaKey* b = NULL;
+ #else
+ RsaKey a[1], b[1];
+ #endif
+ word32 keyIdx = 0;
+
+ #ifdef WOLFSSL_SMALL_STACK
+ a = (RsaKey*)XMALLOC(sizeof(RsaKey), NULL, DYNAMIC_TYPE_RSA);
+ if (a == NULL)
+ return MEMORY_E;
+ b = (RsaKey*)XMALLOC(sizeof(RsaKey), NULL, DYNAMIC_TYPE_RSA);
+ if (b == NULL) {
+ XFREE(a, NULL, DYNAMIC_TYPE_RSA);
+ return MEMORY_E;
+ }
+ #endif
+
+ if ((ret = wc_InitRsaKey(a, NULL)) < 0) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(b, NULL, DYNAMIC_TYPE_RSA);
+ XFREE(a, NULL, DYNAMIC_TYPE_RSA);
+ #endif
+ return ret;
+ }
+ if ((ret = wc_InitRsaKey(b, NULL)) < 0) {
+ wc_FreeRsaKey(a);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(b, NULL, DYNAMIC_TYPE_RSA);
+ XFREE(a, NULL, DYNAMIC_TYPE_RSA);
+ #endif
+ return ret;
+ }
+ if ((ret = wc_RsaPrivateKeyDecode(key, &keyIdx, a, keySz)) == 0) {
+ WOLFSSL_MSG("Checking RSA key pair");
+ keyIdx = 0; /* reset to 0 for parsing public key */
+
+ if ((ret = wc_RsaPublicKeyDecode(der->publicKey, &keyIdx, b,
+ der->pubKeySize)) == 0) {
+ /* limit for user RSA crypto because of RsaKey
+ * dereference. */
+ #if defined(HAVE_USER_RSA)
+ WOLFSSL_MSG("Cannot verify RSA pair with user RSA");
+ ret = 1; /* return first RSA cert as match */
+ #else
+ /* both keys extracted successfully now check n and e
+ * values are the same. This is dereferencing RsaKey */
+ if (mp_cmp(&(a->n), &(b->n)) != MP_EQ ||
+ mp_cmp(&(a->e), &(b->e)) != MP_EQ) {
+ ret = MP_CMP_E;
+ }
+ else
+ ret = 1;
+ #endif
+ }
+ }
+ wc_FreeRsaKey(b);
+ wc_FreeRsaKey(a);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(b, NULL, DYNAMIC_TYPE_RSA);
+ XFREE(a, NULL, DYNAMIC_TYPE_RSA);
+ #endif
+ }
+ else
+ #endif /* NO_RSA */
+
+ #ifdef HAVE_ECC
+ if (der->keyOID == ECDSAk) {
+ #ifdef WOLFSSL_SMALL_STACK
+ ecc_key* key_pair = NULL;
+ byte* privDer;
+ #else
+ ecc_key key_pair[1];
+ byte privDer[MAX_ECC_BYTES];
+ #endif
+ word32 privSz = MAX_ECC_BYTES;
+ word32 keyIdx = 0;
+
+ #ifdef WOLFSSL_SMALL_STACK
+ key_pair = (ecc_key*)XMALLOC(sizeof(ecc_key), NULL, DYNAMIC_TYPE_ECC);
+ if (key_pair == NULL)
+ return MEMORY_E;
+ privDer = (byte*)XMALLOC(MAX_ECC_BYTES, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (privDer == NULL) {
+ XFREE(key_pair, NULL, DYNAMIC_TYPE_ECC);
+ return MEMORY_E;
+ }
+ #endif
+
+ if ((ret = wc_ecc_init(key_pair)) < 0) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(privDer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(key_pair, NULL, DYNAMIC_TYPE_ECC);
+ #endif
+ return ret;
+ }
+
+ if ((ret = wc_EccPrivateKeyDecode(key, &keyIdx, key_pair,
+ keySz)) == 0) {
+ WOLFSSL_MSG("Checking ECC key pair");
+
+ if ((ret = wc_ecc_export_private_only(key_pair, privDer, &privSz))
+ == 0) {
+ wc_ecc_free(key_pair);
+ ret = wc_ecc_init(key_pair);
+ if (ret == 0) {
+ ret = wc_ecc_import_private_key((const byte*)privDer,
+ privSz, (const byte*)der->publicKey,
+ der->pubKeySize, key_pair);
+ }
+
+ /* public and private extracted successfuly now check if is
+ * a pair and also do sanity checks on key. wc_ecc_check_key
+ * checks that private * base generator equals pubkey */
+ if (ret == 0) {
+ if ((ret = wc_ecc_check_key(key_pair)) == 0) {
+ ret = 1;
+ }
+ }
+ ForceZero(privDer, privSz);
+ }
+ }
+ wc_ecc_free(key_pair);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(privDer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(key_pair, NULL, DYNAMIC_TYPE_ECC);
+ #endif
+ }
+ else
+ #endif /* HAVE_ECC */
+
+ #ifdef HAVE_ED25519
+ if (der->keyOID == ED25519k) {
+ #ifdef WOLFSSL_SMALL_STACK
+ ed25519_key* key_pair = NULL;
+ #else
+ ed25519_key key_pair[1];
+ #endif
+ word32 keyIdx = 0;
+
+ #ifdef WOLFSSL_SMALL_STACK
+ key_pair = (ed25519_key*)XMALLOC(sizeof(ed25519_key), NULL,
+ DYNAMIC_TYPE_ED25519);
+ if (key_pair == NULL)
+ return MEMORY_E;
+ #endif
+
+ if ((ret = wc_ed25519_init(key_pair)) < 0) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(key_pair, NULL, DYNAMIC_TYPE_ED25519);
+ #endif
+ return ret;
+ }
+ if ((ret = wc_Ed25519PrivateKeyDecode(key, &keyIdx, key_pair,
+ keySz)) == 0) {
+ WOLFSSL_MSG("Checking ED25519 key pair");
+ keyIdx = 0;
+ if ((ret = wc_ed25519_import_public(der->publicKey, der->pubKeySize,
+ key_pair)) == 0) {
+ /* public and private extracted successfuly no check if is
+ * a pair and also do sanity checks on key. wc_ecc_check_key
+ * checks that private * base generator equals pubkey */
+ if ((ret = wc_ed25519_check_key(key_pair)) == 0)
+ ret = 1;
+ }
+ }
+ wc_ed25519_free(key_pair);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(key_pair, NULL, DYNAMIC_TYPE_ED25519);
+ #endif
+ }
+ else
+ #endif
+ {
+ ret = 0;
+ }
+
+ (void)keySz;
+
+ return ret;
+}
+
+#ifndef NO_PWDBASED
+
+/* Check To see if PKCS version algo is supported, set id if it is return 0
+ < 0 on error */
+static int CheckAlgo(int first, int second, int* id, int* version)
+{
+ *id = ALGO_ID_E;
+ *version = PKCS5; /* default */
+
+ if (first == 1) {
+ switch (second) {
+#if !defined(NO_SHA)
+ #ifndef NO_RC4
+ case PBE_SHA1_RC4_128:
+ *id = PBE_SHA1_RC4_128;
+ *version = PKCS12v1;
+ return 0;
+ #endif
+ #ifndef NO_DES3
+ case PBE_SHA1_DES3:
+ *id = PBE_SHA1_DES3;
+ *version = PKCS12v1;
+ return 0;
+ #endif
+#endif /* !NO_SHA */
+ default:
+ return ALGO_ID_E;
+ }
+ }
+
+ if (first != PKCS5)
+ return ASN_INPUT_E; /* VERSION ERROR */
+
+ if (second == PBES2) {
+ *version = PKCS5v2;
+ return 0;
+ }
+
+ switch (second) {
+#ifndef NO_DES3
+ #ifndef NO_MD5
+ case 3: /* see RFC 2898 for ids */
+ *id = PBE_MD5_DES;
+ return 0;
+ #endif
+ #ifndef NO_SHA
+ case 10:
+ *id = PBE_SHA1_DES;
+ return 0;
+ #endif
+#endif /* !NO_DES3 */
+ default:
+ return ALGO_ID_E;
+
+ }
+}
+
+
+/* Check To see if PKCS v2 algo is supported, set id if it is return 0
+ < 0 on error */
+static int CheckAlgoV2(int oid, int* id)
+{
+ (void)id; /* not used if AES and DES3 disabled */
+ switch (oid) {
+#if !defined(NO_DES3) && !defined(NO_SHA)
+ case DESb:
+ *id = PBE_SHA1_DES;
+ return 0;
+ case DES3b:
+ *id = PBE_SHA1_DES3;
+ return 0;
+#endif
+#ifdef WOLFSSL_AES_256
+ case AES256CBCb:
+ *id = PBE_AES256_CBC;
+ return 0;
+#endif
+ default:
+ return ALGO_ID_E;
+
+ }
+}
+
+
+int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID, word32* oidSz,
+ int* algoID, void* heap)
+{
+ word32 tmpIdx = 0;
+
+ if (key == NULL || algoID == NULL)
+ return BAD_FUNC_ARG;
+
+ *algoID = 0;
+
+ #ifndef NO_RSA
+ {
+ RsaKey rsa;
+
+ wc_InitRsaKey(&rsa, heap);
+ if (wc_RsaPrivateKeyDecode(key, &tmpIdx, &rsa, keySz) == 0) {
+ *algoID = RSAk;
+ }
+ else {
+ WOLFSSL_MSG("Not RSA DER key");
+ }
+ wc_FreeRsaKey(&rsa);
+ }
+ #endif /* NO_RSA */
+ #ifdef HAVE_ECC
+ if (*algoID == 0) {
+ ecc_key ecc;
+
+ tmpIdx = 0;
+ wc_ecc_init_ex(&ecc, heap, INVALID_DEVID);
+ if (wc_EccPrivateKeyDecode(key, &tmpIdx, &ecc, keySz) == 0) {
+ *algoID = ECDSAk;
+
+ /* now find oid */
+ if (wc_ecc_get_oid(ecc.dp->oidSum, curveOID, oidSz) < 0) {
+ WOLFSSL_MSG("Error getting ECC curve OID");
+ wc_ecc_free(&ecc);
+ return BAD_FUNC_ARG;
+ }
+ }
+ else {
+ WOLFSSL_MSG("Not ECC DER key either");
+ }
+ wc_ecc_free(&ecc);
+ }
+#endif /* HAVE_ECC */
+#ifdef HAVE_ED25519
+ if (*algoID != RSAk && *algoID != ECDSAk) {
+ ed25519_key ed25519;
+
+ tmpIdx = 0;
+ if (wc_ed25519_init(&ed25519) == 0) {
+ if (wc_Ed25519PrivateKeyDecode(key, &tmpIdx, &ed25519, keySz)
+ == 0) {
+ *algoID = ED25519k;
+ }
+ else {
+ WOLFSSL_MSG("Not ED25519 DER key");
+ }
+ wc_ed25519_free(&ed25519);
+ }
+ else {
+ WOLFSSL_MSG("GetKeyOID wc_ed25519_init failed");
+ }
+ }
+#endif
+
+ /* if flag is not set then is neither RSA or ECC key that could be
+ * found */
+ if (*algoID == 0) {
+ WOLFSSL_MSG("Bad key DER or compile options");
+ return BAD_FUNC_ARG;
+ }
+
+ (void)curveOID;
+ (void)oidSz;
+
+ return 1;
+}
+
+
+/*
+ * Used when creating PKCS12 shrouded key bags
+ * vPKCS is the version of PKCS to use
+ * vAlgo is the algorithm version to use
+ *
+ * if salt is NULL a random number is generated
+ *
+ * returns the size of encrypted data on success
+ */
+int UnTraditionalEnc(byte* key, word32 keySz, byte* out, word32* outSz,
+ const char* password,int passwordSz, int vPKCS, int vAlgo,
+ byte* salt, word32 saltSz, int itt, WC_RNG* rng, void* heap)
+{
+ int algoID = 0;
+ byte* tmp;
+ word32 tmpSz = 0;
+ word32 sz;
+ word32 seqSz;
+ word32 inOutIdx = 0;
+ word32 totalSz = 0;
+ int version, id;
+ int ret;
+
+ const byte* curveOID = NULL;
+ word32 oidSz = 0;
+
+#ifdef WOLFSSL_SMALL_STACK
+ byte* saltTmp = NULL;
+ byte* cbcIv = NULL;
+#else
+ byte saltTmp[MAX_IV_SIZE];
+ byte cbcIv[MAX_IV_SIZE];
+#endif
+
+ WOLFSSL_ENTER("UnTraditionalEnc()");
+
+ if (saltSz > MAX_SALT_SIZE)
+ return ASN_PARSE_E;
+
+
+ inOutIdx += MAX_SEQ_SZ; /* leave room for size of finished shroud */
+ if (CheckAlgo(vPKCS, vAlgo, &id, &version) < 0) {
+ WOLFSSL_MSG("Bad/Unsupported algorithm ID");
+ return ASN_INPUT_E; /* Algo ID error */
+ }
+
+ if (out != NULL) {
+ if (*outSz < inOutIdx + MAX_ALGO_SZ + MAX_SALT_SIZE + MAX_SEQ_SZ + 1 +
+ MAX_LENGTH_SZ + MAX_SHORT_SZ + 1)
+ return BUFFER_E;
+
+ if (version == PKCS5v2) {
+ WOLFSSL_MSG("PKCS5v2 Not supported yet\n");
+ return ASN_VERSION_E;
+ }
+
+ if (salt == NULL || saltSz <= 0) {
+ saltSz = 8;
+ #ifdef WOLFSSL_SMALL_STACK
+ saltTmp = (byte*)XMALLOC(saltSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (saltTmp == NULL)
+ return MEMORY_E;
+ #endif
+ salt = saltTmp;
+
+ if ((ret = wc_RNG_GenerateBlock(rng, saltTmp, saltSz)) != 0) {
+ WOLFSSL_MSG("Error generating random salt");
+ #ifdef WOLFSSL_SMALL_STACK
+ if (saltTmp != NULL)
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret;
+ }
+ }
+
+
+ /* leave room for a sequence (contains salt and iterations int) */
+ inOutIdx += MAX_SEQ_SZ; sz = 0;
+ inOutIdx += MAX_ALGO_SZ;
+
+ /* place salt in buffer */
+ out[inOutIdx++] = ASN_OCTET_STRING; sz++;
+ tmpSz = SetLength(saltSz, out + inOutIdx);
+ inOutIdx += tmpSz; sz += tmpSz;
+ XMEMCPY(out + inOutIdx, salt, saltSz);
+ inOutIdx += saltSz; sz += saltSz;
+
+ /* place iteration count in buffer */
+ ret = SetShortInt(out, &inOutIdx, itt, *outSz);
+ if (ret < 0) {
+ return ret;
+ }
+ sz += (word32)ret;
+
+ /* wind back index and set sequence then clean up buffer */
+ inOutIdx -= (sz + MAX_SEQ_SZ);
+ tmpSz = SetSequence(sz, out + inOutIdx);
+ XMEMMOVE(out + inOutIdx + tmpSz, out + inOutIdx + MAX_SEQ_SZ, sz);
+ totalSz += tmpSz + sz; sz += tmpSz;
+
+ /* add in algo ID */
+ inOutIdx -= MAX_ALGO_SZ;
+ tmpSz = SetAlgoID(id, out + inOutIdx, oidPBEType, sz);
+ XMEMMOVE(out + inOutIdx + tmpSz, out + inOutIdx + MAX_ALGO_SZ, sz);
+ totalSz += tmpSz; inOutIdx += tmpSz + sz;
+
+ /* octet string containing encrypted key */
+ out[inOutIdx++] = ASN_OCTET_STRING; totalSz++;
+ }
+
+ /* check key type and get OID if ECC */
+ if ((ret = wc_GetKeyOID(key, keySz, &curveOID, &oidSz, &algoID, heap))< 0) {
+ return ret;
+ }
+
+ /* PKCS#8 wrapping around key */
+ if (wc_CreatePKCS8Key(NULL, &tmpSz, key, keySz, algoID, curveOID, oidSz)
+ != LENGTH_ONLY_E) {
+ #ifdef WOLFSSL_SMALL_STACK
+ if (saltTmp != NULL)
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return MEMORY_E;
+ }
+
+ /* check if should return max size */
+ if (out == NULL) {
+ /* account for salt size */
+ if (salt == NULL || saltSz <= 0) {
+ tmpSz += MAX_SALT_SIZE;
+ }
+ else {
+ tmpSz += saltSz;
+ }
+
+ /* plus 3 for tags */
+ *outSz = tmpSz + MAX_ALGO_SZ + MAX_LENGTH_SZ +MAX_LENGTH_SZ + MAX_SEQ_SZ
+ + MAX_LENGTH_SZ + MAX_SEQ_SZ + 3;
+ return LENGTH_ONLY_E;
+ }
+
+ tmp = (byte*)XMALLOC(tmpSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (tmp == NULL) {
+ #ifdef WOLFSSL_SMALL_STACK
+ if (saltTmp != NULL)
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return MEMORY_E;
+ }
+
+ if ((ret = wc_CreatePKCS8Key(tmp, &tmpSz, key, keySz, algoID, curveOID,
+ oidSz)) < 0) {
+ XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ WOLFSSL_MSG("Error wrapping key with PKCS#8");
+ #ifdef WOLFSSL_SMALL_STACK
+ if (saltTmp != NULL)
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret;
+ }
+ tmpSz = ret;
+
+#ifdef WOLFSSL_SMALL_STACK
+ cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (cbcIv == NULL) {
+ if (saltTmp != NULL)
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(salt, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+
+ /* encrypt PKCS#8 wrapped key */
+ if ((ret = wc_CryptKey(password, passwordSz, salt, saltSz, itt, id,
+ tmp, tmpSz, version, cbcIv, 1)) < 0) {
+ XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ WOLFSSL_MSG("Error encrypting key");
+ #ifdef WOLFSSL_SMALL_STACK
+ if (saltTmp != NULL)
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (cbcIv != NULL)
+ XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret; /* encryption failure */
+ }
+ totalSz += tmpSz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ if (saltTmp != NULL)
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (cbcIv != NULL)
+ XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ if (*outSz < inOutIdx + tmpSz + MAX_LENGTH_SZ) {
+ XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return BUFFER_E;
+ }
+
+ /* set length of key and copy over encrypted key */
+ seqSz = SetLength(tmpSz, out + inOutIdx);
+ inOutIdx += seqSz; totalSz += seqSz;
+ XMEMCPY(out + inOutIdx, tmp, tmpSz);
+ XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+
+ /* set total size at begining */
+ sz = SetSequence(totalSz, out);
+ XMEMMOVE(out + sz, out + MAX_SEQ_SZ, totalSz);
+
+ return totalSz + sz;
+}
+
+
+/* Remove Encrypted PKCS8 header, move beginning of traditional to beginning
+ of input */
+int ToTraditionalEnc(byte* input, word32 sz,const char* password,int passwordSz)
+{
+ word32 inOutIdx = 0, seqEnd, oid;
+ int ret = 0, first, second, length = 0, version, saltSz, id;
+ int iterations = 0, keySz = 0;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* salt = NULL;
+ byte* cbcIv = NULL;
+#else
+ byte salt[MAX_SALT_SIZE];
+ byte cbcIv[MAX_IV_SIZE];
+#endif
+
+ if (passwordSz < 0) {
+ WOLFSSL_MSG("Bad password size");
+ return BAD_FUNC_ARG;
+ }
+
+ if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ if (GetAlgoId(input, &inOutIdx, &oid, oidIgnoreType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ first = input[inOutIdx - 2]; /* PKCS version always 2nd to last byte */
+ second = input[inOutIdx - 1]; /* version.algo, algo id last byte */
+
+ if (CheckAlgo(first, second, &id, &version) < 0) {
+ ERROR_OUT(ASN_INPUT_E, exit_tte); /* Algo ID error */
+ }
+
+ if (version == PKCS5v2) {
+ if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ if (GetAlgoId(input, &inOutIdx, &oid, oidKdfType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ if (oid != PBKDF2_OID) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+ }
+
+ if (GetSequence(input, &inOutIdx, &length, sz) <= 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+ /* Find the end of this SEQUENCE so we can check for the OPTIONAL and
+ * DEFAULT items. */
+ seqEnd = inOutIdx + length;
+
+ ret = GetOctetString(input, &inOutIdx, &saltSz, sz);
+ if (ret < 0)
+ goto exit_tte;
+
+ if (saltSz > MAX_SALT_SIZE) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ salt = (byte*)XMALLOC(MAX_SALT_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (salt == NULL) {
+ ERROR_OUT(MEMORY_E, exit_tte);
+ }
+#endif
+
+ XMEMCPY(salt, &input[inOutIdx], saltSz);
+ inOutIdx += saltSz;
+
+ if (GetShortInt(input, &inOutIdx, &iterations, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ /* OPTIONAL key length */
+ if (seqEnd > inOutIdx && input[inOutIdx] == ASN_INTEGER) {
+ if (GetShortInt(input, &inOutIdx, &keySz, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+ }
+
+ /* DEFAULT HMAC is SHA-1 */
+ if (seqEnd > inOutIdx) {
+ if (GetAlgoId(input, &inOutIdx, &oid, oidHmacType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (cbcIv == NULL) {
+ ERROR_OUT(MEMORY_E, exit_tte);
+ }
+#endif
+
+ if (version == PKCS5v2) {
+ /* get encryption algo */
+ if (GetAlgoId(input, &inOutIdx, &oid, oidBlkType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ if (CheckAlgoV2(oid, &id) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte); /* PKCS v2 algo id error */
+ }
+
+ ret = GetOctetString(input, &inOutIdx, &length, sz);
+ if (ret < 0)
+ goto exit_tte;
+
+ if (length > MAX_IV_SIZE) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ XMEMCPY(cbcIv, &input[inOutIdx], length);
+ inOutIdx += length;
+ }
+
+ ret = GetOctetString(input, &inOutIdx, &length, sz);
+ if (ret < 0)
+ goto exit_tte;
+
+ ret = wc_CryptKey(password, passwordSz, salt, saltSz, iterations, id,
+ input + inOutIdx, length, version, cbcIv, 0);
+
+exit_tte:
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(salt, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(cbcIv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ if (ret == 0) {
+ XMEMMOVE(input, input + inOutIdx, length);
+ ret = ToTraditional(input, length);
+ }
+
+ return ret;
+}
+
+
+/* encrypt PKCS 12 content
+ *
+ * NOTE: if out is NULL then outSz is set with the total buffer size needed and
+ * the error value LENGTH_ONLY_E is returned.
+ *
+ * input data to encrypt
+ * inputSz size of input buffer
+ * out buffer to hold the result
+ * outSz size of out buffer
+ * password password if used. Can be NULL for no password
+ * passwordSz size of password buffer
+ * vPKCS version of PKCS i.e. PKCS5v2
+ * vAlgo algorithm version
+ * salt buffer holding salt if used. If NULL then a random salt is created
+ * saltSz size of salt buffer if it is not NULL
+ * itt number of iterations used
+ * rng random number generator to use
+ * heap possible heap hint for mallocs/frees
+ *
+ * returns the total size of encrypted content on success.
+ */
+int EncryptContent(byte* input, word32 inputSz, byte* out, word32* outSz,
+ const char* password, int passwordSz, int vPKCS, int vAlgo,
+ byte* salt, word32 saltSz, int itt, WC_RNG* rng, void* heap)
+{
+ word32 sz;
+ word32 inOutIdx = 0;
+ word32 tmpIdx = 0;
+ word32 totalSz = 0;
+ word32 seqSz;
+ int ret;
+ int version, id;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* saltTmp = NULL;
+ byte* cbcIv = NULL;
+#else
+ byte saltTmp[MAX_SALT_SIZE];
+ byte cbcIv[MAX_IV_SIZE];
+#endif
+
+ (void)heap;
+
+ WOLFSSL_ENTER("EncryptContent()");
+
+ if (CheckAlgo(vPKCS, vAlgo, &id, &version) < 0)
+ return ASN_INPUT_E; /* Algo ID error */
+
+ if (version == PKCS5v2) {
+ WOLFSSL_MSG("PKCS#5 version 2 not supported yet");
+ return BAD_FUNC_ARG;
+ }
+
+ if (saltSz > MAX_SALT_SIZE)
+ return ASN_PARSE_E;
+
+ if (outSz == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ if (out == NULL) {
+ sz = inputSz;
+ switch (id) {
+ #if !defined(NO_DES3) && (!defined(NO_MD5) || !defined(NO_SHA))
+ case PBE_MD5_DES:
+ case PBE_SHA1_DES:
+ case PBE_SHA1_DES3:
+ /* set to block size of 8 for DES operations. This rounds up
+ * to the nearset multiple of 8 */
+ sz &= 0xfffffff8;
+ sz += 8;
+ break;
+ #endif /* !NO_DES3 && (!NO_MD5 || !NO_SHA) */
+ #if !defined(NO_RC4) && !defined(NO_SHA)
+ case PBE_SHA1_RC4_128:
+ break;
+ #endif
+ case -1:
+ break;
+
+ default:
+ return ALGO_ID_E;
+ }
+
+ if (saltSz <= 0) {
+ sz += MAX_SALT_SIZE;
+ }
+ else {
+ sz += saltSz;
+ }
+
+ /* add 2 for tags */
+ *outSz = sz + MAX_ALGO_SZ + MAX_SEQ_SZ + MAX_LENGTH_SZ +
+ MAX_LENGTH_SZ + MAX_LENGTH_SZ + MAX_SHORT_SZ + 2;
+
+ return LENGTH_ONLY_E;
+ }
+
+ if (inOutIdx + MAX_ALGO_SZ + MAX_SEQ_SZ + 1 > *outSz)
+ return BUFFER_E;
+
+ sz = SetAlgoID(id, out + inOutIdx, oidPBEType, 0);
+ inOutIdx += sz; totalSz += sz;
+ tmpIdx = inOutIdx;
+ tmpIdx += MAX_SEQ_SZ; /* save room for salt and itter sequence */
+ out[tmpIdx++] = ASN_OCTET_STRING;
+
+ /* create random salt if one not provided */
+ if (salt == NULL || saltSz <= 0) {
+ saltSz = 8;
+ #ifdef WOLFSSL_SMALL_STACK
+ saltTmp = (byte*)XMALLOC(saltSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (saltTmp == NULL)
+ return MEMORY_E;
+ #endif
+ salt = saltTmp;
+
+ if ((ret = wc_RNG_GenerateBlock(rng, saltTmp, saltSz)) != 0) {
+ WOLFSSL_MSG("Error generating random salt");
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret;
+ }
+ }
+
+ if (tmpIdx + MAX_LENGTH_SZ + saltSz + MAX_SHORT_SZ > *outSz) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return BUFFER_E;
+ }
+
+ sz = SetLength(saltSz, out + tmpIdx);
+ tmpIdx += sz;
+
+ XMEMCPY(out + tmpIdx, salt, saltSz);
+ tmpIdx += saltSz;
+
+ /* place itteration setting in buffer */
+ ret = SetShortInt(out, &tmpIdx, itt, *outSz);
+ if (ret < 0) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret;
+ }
+
+ /* rewind and place sequence */
+ sz = tmpIdx - inOutIdx - MAX_SEQ_SZ;
+ seqSz = SetSequence(sz, out + inOutIdx);
+ XMEMMOVE(out + inOutIdx + seqSz, out + inOutIdx + MAX_SEQ_SZ, sz);
+ inOutIdx += seqSz; totalSz += seqSz;
+ inOutIdx += sz; totalSz += sz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (cbcIv == NULL) {
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+
+ if ((ret = wc_CryptKey(password, passwordSz, salt, saltSz, itt, id,
+ input, inputSz, version, cbcIv, 1)) < 0) {
+
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret; /* encrypt failure */
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ if (inOutIdx + 1 + MAX_LENGTH_SZ + inputSz > *outSz)
+ return BUFFER_E;
+
+ out[inOutIdx++] = ASN_LONG_LENGTH; totalSz++;
+ sz = SetLength(inputSz, out + inOutIdx);
+ inOutIdx += sz; totalSz += sz;
+ XMEMCPY(out + inOutIdx, input, inputSz);
+ totalSz += inputSz;
+
+ return totalSz;
+}
+
+
+/* decrypt PKCS
+ *
+ * NOTE: input buffer is overwritten with decrypted data!
+ *
+ * input[in/out] data to decrypt and results are written to
+ * sz size of input buffer
+ * password password if used. Can be NULL for no password
+ * passwordSz size of password buffer
+ *
+ * returns the total size of decrypted content on success.
+ */
+int DecryptContent(byte* input, word32 sz,const char* password,int passwordSz)
+{
+ word32 inOutIdx = 0, seqEnd, oid;
+ int ret = 0;
+ int first, second, length = 0, version, saltSz, id;
+ int iterations = 0, keySz = 0;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* salt = NULL;
+ byte* cbcIv = NULL;
+#else
+ byte salt[MAX_SALT_SIZE];
+ byte cbcIv[MAX_IV_SIZE];
+#endif
+
+ if (GetAlgoId(input, &inOutIdx, &oid, oidIgnoreType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ first = input[inOutIdx - 2]; /* PKCS version always 2nd to last byte */
+ second = input[inOutIdx - 1]; /* version.algo, algo id last byte */
+
+ if (CheckAlgo(first, second, &id, &version) < 0) {
+ ERROR_OUT(ASN_INPUT_E, exit_dc); /* Algo ID error */
+ }
+
+ if (version == PKCS5v2) {
+ if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ if (GetAlgoId(input, &inOutIdx, &oid, oidKdfType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ if (oid != PBKDF2_OID) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+ }
+
+ if (GetSequence(input, &inOutIdx, &length, sz) <= 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+ /* Find the end of this SEQUENCE so we can check for the OPTIONAL and
+ * DEFAULT items. */
+ seqEnd = inOutIdx + length;
+
+ ret = GetOctetString(input, &inOutIdx, &saltSz, sz);
+ if (ret < 0)
+ goto exit_dc;
+
+ if (saltSz > MAX_SALT_SIZE) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ salt = (byte*)XMALLOC(MAX_SALT_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (salt == NULL) {
+ ERROR_OUT(MEMORY_E, exit_dc);
+ }
+#endif
+
+ XMEMCPY(salt, &input[inOutIdx], saltSz);
+ inOutIdx += saltSz;
+
+ if (GetShortInt(input, &inOutIdx, &iterations, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ /* OPTIONAL key length */
+ if (seqEnd > inOutIdx && input[inOutIdx] == ASN_INTEGER) {
+ if (GetShortInt(input, &inOutIdx, &keySz, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+ }
+
+ /* DEFAULT HMAC is SHA-1 */
+ if (seqEnd > inOutIdx) {
+ if (GetAlgoId(input, &inOutIdx, &oid, oidHmacType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (cbcIv == NULL) {
+ ERROR_OUT(MEMORY_E, exit_dc);
+ }
+#endif
+
+ if (version == PKCS5v2) {
+ /* get encryption algo */
+ if (GetAlgoId(input, &inOutIdx, &oid, oidBlkType, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ if (CheckAlgoV2(oid, &id) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc); /* PKCS v2 algo id error */
+ }
+
+ ret = GetOctetString(input, &inOutIdx, &length, sz);
+ if (ret < 0)
+ goto exit_dc;
+
+ if (length > MAX_IV_SIZE) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ XMEMCPY(cbcIv, &input[inOutIdx], length);
+ inOutIdx += length;
+ }
+
+ if (input[inOutIdx++] != (ASN_CONTEXT_SPECIFIC | 0)) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ if (GetLength(input, &inOutIdx, &length, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_dc);
+ }
+
+ ret = wc_CryptKey(password, passwordSz, salt, saltSz, iterations, id,
+ input + inOutIdx, length, version, cbcIv, 0);
+
+exit_dc:
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(salt, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(cbcIv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ if (ret == 0) {
+ XMEMMOVE(input, input + inOutIdx, length);
+ ret = length;
+ }
+
+ return ret;
+}
+#endif /* NO_PWDBASED */
+
+#ifndef NO_RSA
+
+#ifndef HAVE_USER_RSA
+int wc_RsaPublicKeyDecode(const byte* input, word32* inOutIdx, RsaKey* key,
+ word32 inSz)
+{
+ int length;
+#if defined(OPENSSL_EXTRA) || defined(RSA_DECODE_EXTRA)
+ byte b;
+#endif
+ int ret;
+
+ if (input == NULL || inOutIdx == NULL || key == NULL)
+ return BAD_FUNC_ARG;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ key->type = RSA_PUBLIC;
+
+#if defined(OPENSSL_EXTRA) || defined(RSA_DECODE_EXTRA)
+ if ((*inOutIdx + 1) > inSz)
+ return BUFFER_E;
+
+ b = input[*inOutIdx];
+ if (b != ASN_INTEGER) {
+ /* not from decoded cert, will have algo id, skip past */
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (SkipObjectId(input, inOutIdx, inSz) < 0)
+ return ASN_PARSE_E;
+
+ /* Option NULL ASN.1 tag */
+ if (*inOutIdx >= inSz) {
+ return BUFFER_E;
+ }
+ if (input[*inOutIdx] == ASN_TAG_NULL) {
+ ret = GetASNNull(input, inOutIdx, inSz);
+ if (ret != 0)
+ return ret;
+ }
+
+ /* should have bit tag length and seq next */
+ ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
+ if (ret != 0)
+ return ret;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+ }
+#endif /* OPENSSL_EXTRA */
+
+ if (GetInt(&key->n, input, inOutIdx, inSz) < 0)
+ return ASN_RSA_KEY_E;
+ if (GetInt(&key->e, input, inOutIdx, inSz) < 0) {
+ mp_clear(&key->n);
+ return ASN_RSA_KEY_E;
+ }
+
+#ifdef WOLFSSL_XILINX_CRYPT
+ if (wc_InitRsaHw(key) != 0) {
+ return BAD_STATE_E;
+ }
+#endif
+
+ return 0;
+}
+
+/* import RSA public key elements (n, e) into RsaKey structure (key) */
+int wc_RsaPublicKeyDecodeRaw(const byte* n, word32 nSz, const byte* e,
+ word32 eSz, RsaKey* key)
+{
+ if (n == NULL || e == NULL || key == NULL)
+ return BAD_FUNC_ARG;
+
+ key->type = RSA_PUBLIC;
+
+ if (mp_init(&key->n) != MP_OKAY)
+ return MP_INIT_E;
+
+ if (mp_read_unsigned_bin(&key->n, n, nSz) != 0) {
+ mp_clear(&key->n);
+ return ASN_GETINT_E;
+ }
+
+ if (mp_init(&key->e) != MP_OKAY) {
+ mp_clear(&key->n);
+ return MP_INIT_E;
+ }
+
+ if (mp_read_unsigned_bin(&key->e, e, eSz) != 0) {
+ mp_clear(&key->n);
+ mp_clear(&key->e);
+ return ASN_GETINT_E;
+ }
+
+#ifdef WOLFSSL_XILINX_CRYPT
+ if (wc_InitRsaHw(key) != 0) {
+ return BAD_STATE_E;
+ }
+#endif
+
+ return 0;
+}
+#endif /* HAVE_USER_RSA */
+#endif
+
+#ifndef NO_DH
+
+int wc_DhKeyDecode(const byte* input, word32* inOutIdx, DhKey* key, word32 inSz)
+{
+ int length;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->g, input, inOutIdx, inSz) < 0) {
+ return ASN_DH_KEY_E;
+ }
+
+ return 0;
+}
+
+
+int wc_DhParamsLoad(const byte* input, word32 inSz, byte* p, word32* pInOutSz,
+ byte* g, word32* gInOutSz)
+{
+ word32 idx = 0;
+ int ret;
+ int length;
+
+ if (GetSequence(input, &idx, &length, inSz) <= 0)
+ return ASN_PARSE_E;
+
+ ret = GetASNInt(input, &idx, &length, inSz);
+ if (ret != 0)
+ return ret;
+
+ if (length <= (int)*pInOutSz) {
+ XMEMCPY(p, &input[idx], length);
+ *pInOutSz = length;
+ }
+ else {
+ return BUFFER_E;
+ }
+ idx += length;
+
+ ret = GetASNInt(input, &idx, &length, inSz);
+ if (ret != 0)
+ return ret;
+
+ if (length <= (int)*gInOutSz) {
+ XMEMCPY(g, &input[idx], length);
+ *gInOutSz = length;
+ }
+ else {
+ return BUFFER_E;
+ }
+
+ return 0;
+}
+
+#endif /* NO_DH */
+
+
+#ifndef NO_DSA
+
+int DsaPublicKeyDecode(const byte* input, word32* inOutIdx, DsaKey* key,
+ word32 inSz)
+{
+ int length;
+
+ if (input == NULL || inOutIdx == NULL || key == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->q, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->g, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->y, input, inOutIdx, inSz) < 0 )
+ return ASN_DH_KEY_E;
+
+ key->type = DSA_PUBLIC;
+ return 0;
+}
+
+
+int DsaPrivateKeyDecode(const byte* input, word32* inOutIdx, DsaKey* key,
+ word32 inSz)
+{
+ int length, version;
+
+ /* Sanity checks on input */
+ if (input == NULL || inOutIdx == NULL || key == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->q, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->g, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->y, input, inOutIdx, inSz) < 0 ||
+ GetInt(&key->x, input, inOutIdx, inSz) < 0 )
+ return ASN_DH_KEY_E;
+
+ key->type = DSA_PRIVATE;
+ return 0;
+}
+
+static mp_int* GetDsaInt(DsaKey* key, int idx)
+{
+ if (idx == 0)
+ return &key->p;
+ if (idx == 1)
+ return &key->q;
+ if (idx == 2)
+ return &key->g;
+ if (idx == 3)
+ return &key->y;
+ if (idx == 4)
+ return &key->x;
+
+ return NULL;
+}
+
+/* Release Tmp DSA resources */
+static WC_INLINE void FreeTmpDsas(byte** tmps, void* heap)
+{
+ int i;
+
+ for (i = 0; i < DSA_INTS; i++)
+ XFREE(tmps[i], heap, DYNAMIC_TYPE_DSA);
+
+ (void)heap;
+}
+
+/* Convert DsaKey key to DER format, write to output (inLen), return bytes
+ written */
+int wc_DsaKeyToDer(DsaKey* key, byte* output, word32 inLen)
+{
+ word32 seqSz, verSz, rawLen, intTotalLen = 0;
+ word32 sizes[DSA_INTS];
+ int i, j, outLen, ret = 0, mpSz;
+
+ byte seq[MAX_SEQ_SZ];
+ byte ver[MAX_VERSION_SZ];
+ byte* tmps[DSA_INTS];
+
+ if (!key || !output)
+ return BAD_FUNC_ARG;
+
+ if (key->type != DSA_PRIVATE)
+ return BAD_FUNC_ARG;
+
+ for (i = 0; i < DSA_INTS; i++)
+ tmps[i] = NULL;
+
+ /* write all big ints from key to DER tmps */
+ for (i = 0; i < DSA_INTS; i++) {
+ mp_int* keyInt = GetDsaInt(key, i);
+
+ rawLen = mp_unsigned_bin_size(keyInt) + 1;
+ tmps[i] = (byte*)XMALLOC(rawLen + MAX_SEQ_SZ, key->heap,
+ DYNAMIC_TYPE_DSA);
+ if (tmps[i] == NULL) {
+ ret = MEMORY_E;
+ break;
+ }
+
+ mpSz = SetASNIntMP(keyInt, -1, tmps[i]);
+ if (mpSz < 0) {
+ ret = mpSz;
+ break;
+ }
+ intTotalLen += (sizes[i] = mpSz);
+ }
+
+ if (ret != 0) {
+ FreeTmpDsas(tmps, key->heap);
+ return ret;
+ }
+
+ /* make headers */
+ verSz = SetMyVersion(0, ver, FALSE);
+ seqSz = SetSequence(verSz + intTotalLen, seq);
+
+ outLen = seqSz + verSz + intTotalLen;
+ if (outLen > (int)inLen)
+ return BAD_FUNC_ARG;
+
+ /* write to output */
+ XMEMCPY(output, seq, seqSz);
+ j = seqSz;
+ XMEMCPY(output + j, ver, verSz);
+ j += verSz;
+
+ for (i = 0; i < DSA_INTS; i++) {
+ XMEMCPY(output + j, tmps[i], sizes[i]);
+ j += sizes[i];
+ }
+ FreeTmpDsas(tmps, key->heap);
+
+ return outLen;
+}
+
+#endif /* NO_DSA */
+
+
+void InitDecodedCert(DecodedCert* cert, byte* source, word32 inSz, void* heap)
+{
+ if (cert != NULL) {
+ XMEMSET(cert, 0, sizeof(DecodedCert));
+
+ cert->subjectCNEnc = CTC_UTF8;
+ cert->issuer[0] = '\0';
+ cert->subject[0] = '\0';
+ cert->source = source; /* don't own */
+ cert->maxIdx = inSz; /* can't go over this index */
+ cert->heap = heap;
+ #ifdef WOLFSSL_CERT_GEN
+ cert->subjectSNEnc = CTC_UTF8;
+ cert->subjectCEnc = CTC_PRINTABLE;
+ cert->subjectLEnc = CTC_UTF8;
+ cert->subjectSTEnc = CTC_UTF8;
+ cert->subjectOEnc = CTC_UTF8;
+ cert->subjectOUEnc = CTC_UTF8;
+ #endif /* WOLFSSL_CERT_GEN */
+
+ InitSignatureCtx(&cert->sigCtx, heap, INVALID_DEVID);
+ }
+}
+
+
+void FreeAltNames(DNS_entry* altNames, void* heap)
+{
+ (void)heap;
+
+ while (altNames) {
+ DNS_entry* tmp = altNames->next;
+
+ XFREE(altNames->name, heap, DYNAMIC_TYPE_ALTNAME);
+ XFREE(altNames, heap, DYNAMIC_TYPE_ALTNAME);
+ altNames = tmp;
+ }
+}
+
+#ifndef IGNORE_NAME_CONSTRAINTS
+
+void FreeNameSubtrees(Base_entry* names, void* heap)
+{
+ (void)heap;
+
+ while (names) {
+ Base_entry* tmp = names->next;
+
+ XFREE(names->name, heap, DYNAMIC_TYPE_ALTNAME);
+ XFREE(names, heap, DYNAMIC_TYPE_ALTNAME);
+ names = tmp;
+ }
+}
+
+#endif /* IGNORE_NAME_CONSTRAINTS */
+
+void FreeDecodedCert(DecodedCert* cert)
+{
+ if (cert->subjectCNStored == 1)
+ XFREE(cert->subjectCN, cert->heap, DYNAMIC_TYPE_SUBJECT_CN);
+ if (cert->pubKeyStored == 1)
+ XFREE(cert->publicKey, cert->heap, DYNAMIC_TYPE_PUBLIC_KEY);
+ if (cert->weOwnAltNames && cert->altNames)
+ FreeAltNames(cert->altNames, cert->heap);
+#ifndef IGNORE_NAME_CONSTRAINTS
+ if (cert->altEmailNames)
+ FreeAltNames(cert->altEmailNames, cert->heap);
+ if (cert->permittedNames)
+ FreeNameSubtrees(cert->permittedNames, cert->heap);
+ if (cert->excludedNames)
+ FreeNameSubtrees(cert->excludedNames, cert->heap);
+#endif /* IGNORE_NAME_CONSTRAINTS */
+#ifdef WOLFSSL_SEP
+ XFREE(cert->deviceType, cert->heap, DYNAMIC_TYPE_X509_EXT);
+ XFREE(cert->hwType, cert->heap, DYNAMIC_TYPE_X509_EXT);
+ XFREE(cert->hwSerialNum, cert->heap, DYNAMIC_TYPE_X509_EXT);
+#endif /* WOLFSSL_SEP */
+#if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ if (cert->issuerName.fullName != NULL)
+ XFREE(cert->issuerName.fullName, cert->heap, DYNAMIC_TYPE_X509);
+ if (cert->subjectName.fullName != NULL)
+ XFREE(cert->subjectName.fullName, cert->heap, DYNAMIC_TYPE_X509);
+#endif /* OPENSSL_EXTRA */
+ FreeSignatureCtx(&cert->sigCtx);
+}
+
+static int GetCertHeader(DecodedCert* cert)
+{
+ int ret = 0, len;
+
+ if (GetSequence(cert->source, &cert->srcIdx, &len, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ cert->certBegin = cert->srcIdx;
+
+ if (GetSequence(cert->source, &cert->srcIdx, &len, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+ cert->sigIndex = len + cert->srcIdx;
+
+ if (GetExplicitVersion(cert->source, &cert->srcIdx, &cert->version,
+ cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if (GetSerialNumber(cert->source, &cert->srcIdx, cert->serial,
+ &cert->serialSz, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ return ret;
+}
+
+#if !defined(NO_RSA)
+/* Store Rsa Key, may save later, Dsa could use in future */
+static int StoreRsaKey(DecodedCert* cert)
+{
+ int length;
+ word32 recvd = cert->srcIdx;
+
+ if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ recvd = cert->srcIdx - recvd;
+ length += recvd;
+
+ while (recvd--)
+ cert->srcIdx--;
+
+ cert->pubKeySize = length;
+ cert->publicKey = cert->source + cert->srcIdx;
+ cert->srcIdx += length;
+
+ return 0;
+}
+#endif /* !NO_RSA */
+
+#ifdef HAVE_ECC
+
+ /* return 0 on success if the ECC curve oid sum is supported */
+ static int CheckCurve(word32 oid)
+ {
+ int ret = 0;
+ word32 oidSz = 0;
+
+ ret = wc_ecc_get_oid(oid, NULL, &oidSz);
+ if (ret < 0 || oidSz <= 0) {
+ WOLFSSL_MSG("CheckCurve not found");
+ ret = ALGO_ID_E;
+ }
+
+ return ret;
+ }
+
+#endif /* HAVE_ECC */
+
+static int GetKey(DecodedCert* cert)
+{
+ int length;
+#if defined(HAVE_ECC) || defined(HAVE_NTRU)
+ int tmpIdx = cert->srcIdx;
+#endif
+
+ if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if (GetAlgoId(cert->source, &cert->srcIdx,
+ &cert->keyOID, oidKeyType, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ switch (cert->keyOID) {
+ #ifndef NO_RSA
+ case RSAk:
+ {
+ int ret;
+ ret = CheckBitString(cert->source, &cert->srcIdx, NULL,
+ cert->maxIdx, 1, NULL);
+ if (ret != 0)
+ return ret;
+
+ return StoreRsaKey(cert);
+ }
+
+ #endif /* NO_RSA */
+ #ifdef HAVE_NTRU
+ case NTRUk:
+ {
+ const byte* key = &cert->source[tmpIdx];
+ byte* next = (byte*)key;
+ word16 keyLen;
+ word32 rc;
+ word32 remaining = cert->maxIdx - cert->srcIdx;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* keyBlob = NULL;
+#else
+ byte keyBlob[MAX_NTRU_KEY_SZ];
+#endif
+ rc = ntru_crypto_ntru_encrypt_subjectPublicKeyInfo2PublicKey(key,
+ &keyLen, NULL, &next, &remaining);
+ if (rc != NTRU_OK)
+ return ASN_NTRU_KEY_E;
+ if (keyLen > MAX_NTRU_KEY_SZ)
+ return ASN_NTRU_KEY_E;
+
+#ifdef WOLFSSL_SMALL_STACK
+ keyBlob = (byte*)XMALLOC(MAX_NTRU_KEY_SZ, cert->heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (keyBlob == NULL)
+ return MEMORY_E;
+#endif
+
+ rc = ntru_crypto_ntru_encrypt_subjectPublicKeyInfo2PublicKey(key,
+ &keyLen, keyBlob, &next, &remaining);
+ if (rc != NTRU_OK) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ASN_NTRU_KEY_E;
+ }
+
+ if ( (next - key) < 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ASN_NTRU_KEY_E;
+ }
+
+ cert->srcIdx = tmpIdx + (int)(next - key);
+
+ cert->publicKey = (byte*)XMALLOC(keyLen, cert->heap,
+ DYNAMIC_TYPE_PUBLIC_KEY);
+ if (cert->publicKey == NULL) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return MEMORY_E;
+ }
+ XMEMCPY(cert->publicKey, keyBlob, keyLen);
+ cert->pubKeyStored = 1;
+ cert->pubKeySize = keyLen;
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(keyBlob, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return 0;
+ }
+ #endif /* HAVE_NTRU */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ {
+ int ret;
+ byte seq[5];
+ int pubLen = length + 1 + SetLength(length, seq);
+
+ if (cert->source[cert->srcIdx] !=
+ (ASN_SEQUENCE | ASN_CONSTRUCTED)) {
+ if (GetObjectId(cert->source, &cert->srcIdx,
+ &cert->pkCurveOID, oidCurveType, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if (CheckCurve(cert->pkCurveOID) < 0)
+ return ECC_CURVE_OID_E;
+
+ /* key header */
+ ret = CheckBitString(cert->source, &cert->srcIdx, &length,
+ cert->maxIdx, 1, NULL);
+ if (ret != 0)
+ return ret;
+ }
+
+ cert->publicKey = (byte*)XMALLOC(pubLen, cert->heap,
+ DYNAMIC_TYPE_PUBLIC_KEY);
+ if (cert->publicKey == NULL)
+ return MEMORY_E;
+ XMEMCPY(cert->publicKey, &cert->source[tmpIdx], pubLen);
+ cert->pubKeyStored = 1;
+ cert->pubKeySize = pubLen;
+
+ cert->srcIdx = tmpIdx + pubLen;
+
+ return 0;
+ }
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+ case ED25519k:
+ {
+ int ret;
+
+ cert->pkCurveOID = ED25519k;
+
+ ret = CheckBitString(cert->source, &cert->srcIdx, &length,
+ cert->maxIdx, 1, NULL);
+ if (ret != 0)
+ return ret;
+
+ cert->publicKey = (byte*) XMALLOC(length, cert->heap,
+ DYNAMIC_TYPE_PUBLIC_KEY);
+ if (cert->publicKey == NULL)
+ return MEMORY_E;
+ XMEMCPY(cert->publicKey, &cert->source[cert->srcIdx], length);
+ cert->pubKeyStored = 1;
+ cert->pubKeySize = length;
+
+ cert->srcIdx += length;
+
+ return 0;
+ }
+ #endif /* HAVE_ED25519 */
+ default:
+ return ASN_UNKNOWN_OID_E;
+ }
+}
+
+/* process NAME, either issuer or subject */
+static int GetName(DecodedCert* cert, int nameType)
+{
+ int length; /* length of all distinguished names */
+ int dummy;
+ int ret;
+ char* full;
+ byte* hash;
+ word32 idx;
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ DecodedName* dName =
+ (nameType == ISSUER) ? &cert->issuerName : &cert->subjectName;
+ int dcnum = 0;
+ #endif /* OPENSSL_EXTRA */
+
+ WOLFSSL_MSG("Getting Cert Name");
+
+ if (nameType == ISSUER) {
+ full = cert->issuer;
+ hash = cert->issuerHash;
+ }
+ else {
+ full = cert->subject;
+ hash = cert->subjectHash;
+ }
+
+ if (cert->srcIdx >= cert->maxIdx) {
+ return BUFFER_E;
+ }
+
+ if (cert->source[cert->srcIdx] == ASN_OBJECT_ID) {
+ WOLFSSL_MSG("Trying optional prefix...");
+
+ if (SkipObjectId(cert->source, &cert->srcIdx, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+ WOLFSSL_MSG("Got optional prefix");
+ }
+
+ /* For OCSP, RFC2560 section 4.1.1 states the issuer hash should be
+ * calculated over the entire DER encoding of the Name field, including
+ * the tag and length. */
+ idx = cert->srcIdx;
+ if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+#ifdef NO_SHA
+ ret = wc_Sha256Hash(&cert->source[idx], length + cert->srcIdx - idx, hash);
+#else
+ ret = wc_ShaHash(&cert->source[idx], length + cert->srcIdx - idx, hash);
+#endif
+ if (ret != 0)
+ return ret;
+
+ length += cert->srcIdx;
+ idx = 0;
+
+#ifdef HAVE_PKCS7
+ /* store pointer to raw issuer */
+ if (nameType == ISSUER) {
+ cert->issuerRaw = &cert->source[cert->srcIdx];
+ cert->issuerRawLen = length - cert->srcIdx;
+ }
+#endif
+#ifndef IGNORE_NAME_CONSTRAINTS
+ if (nameType == SUBJECT) {
+ cert->subjectRaw = &cert->source[cert->srcIdx];
+ cert->subjectRawLen = length - cert->srcIdx;
+ }
+#endif
+
+ while (cert->srcIdx < (word32)length) {
+ byte b;
+ byte joint[2];
+ byte tooBig = FALSE;
+ int oidSz;
+
+ if (GetSet(cert->source, &cert->srcIdx, &dummy, cert->maxIdx) < 0) {
+ WOLFSSL_MSG("Cert name lacks set header, trying sequence");
+ }
+
+ if (GetSequence(cert->source, &cert->srcIdx, &dummy, cert->maxIdx) <= 0)
+ return ASN_PARSE_E;
+
+ ret = GetASNObjectId(cert->source, &cert->srcIdx, &oidSz, cert->maxIdx);
+ if (ret != 0)
+ return ret;
+
+ /* make sure there is room for joint */
+ if ((cert->srcIdx + sizeof(joint)) > cert->maxIdx)
+ return ASN_PARSE_E;
+
+ XMEMCPY(joint, &cert->source[cert->srcIdx], sizeof(joint));
+
+ /* v1 name types */
+ if (joint[0] == 0x55 && joint[1] == 0x04) {
+ const char* copy = NULL;
+ int strLen;
+ byte id;
+
+ cert->srcIdx += 2;
+ id = cert->source[cert->srcIdx++];
+ b = cert->source[cert->srcIdx++]; /* encoding */
+
+ if (GetLength(cert->source, &cert->srcIdx, &strLen,
+ cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if ( (strLen + 14) > (int)(ASN_NAME_MAX - idx)) {
+ /* include biggest pre fix header too 4 = "/serialNumber=" */
+ WOLFSSL_MSG("ASN Name too big, skipping");
+ tooBig = TRUE;
+ }
+
+ if (id == ASN_COMMON_NAME) {
+ if (nameType == SUBJECT) {
+ cert->subjectCN = (char *)&cert->source[cert->srcIdx];
+ cert->subjectCNLen = strLen;
+ cert->subjectCNEnc = b;
+ }
+
+ copy = WOLFSSL_COMMON_NAME;
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->cnIdx = cert->srcIdx;
+ dName->cnLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_SUR_NAME) {
+ copy = WOLFSSL_SUR_NAME;
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectSN = (char*)&cert->source[cert->srcIdx];
+ cert->subjectSNLen = strLen;
+ cert->subjectSNEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->snIdx = cert->srcIdx;
+ dName->snLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_COUNTRY_NAME) {
+ copy = WOLFSSL_COUNTRY_NAME;
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectC = (char*)&cert->source[cert->srcIdx];
+ cert->subjectCLen = strLen;
+ cert->subjectCEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->cIdx = cert->srcIdx;
+ dName->cLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_LOCALITY_NAME) {
+ copy = WOLFSSL_LOCALITY_NAME;
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectL = (char*)&cert->source[cert->srcIdx];
+ cert->subjectLLen = strLen;
+ cert->subjectLEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->lIdx = cert->srcIdx;
+ dName->lLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_STATE_NAME) {
+ copy = WOLFSSL_STATE_NAME;
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectST = (char*)&cert->source[cert->srcIdx];
+ cert->subjectSTLen = strLen;
+ cert->subjectSTEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->stIdx = cert->srcIdx;
+ dName->stLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_ORG_NAME) {
+ copy = WOLFSSL_ORG_NAME;
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectO = (char*)&cert->source[cert->srcIdx];
+ cert->subjectOLen = strLen;
+ cert->subjectOEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->oIdx = cert->srcIdx;
+ dName->oLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_ORGUNIT_NAME) {
+ copy = WOLFSSL_ORGUNIT_NAME;
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectOU = (char*)&cert->source[cert->srcIdx];
+ cert->subjectOULen = strLen;
+ cert->subjectOUEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->ouIdx = cert->srcIdx;
+ dName->ouLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_SERIAL_NUMBER) {
+ copy = WOLFSSL_SERIAL_NUMBER;
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->snIdx = cert->srcIdx;
+ dName->snLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ if (copy && !tooBig) {
+ XMEMCPY(&full[idx], copy, XSTRLEN(copy));
+ idx += (word32)XSTRLEN(copy);
+ #ifdef WOLFSSL_WPAS
+ full[idx] = '=';
+ idx++;
+ #endif
+ XMEMCPY(&full[idx], &cert->source[cert->srcIdx], strLen);
+ idx += strLen;
+ }
+
+ cert->srcIdx += strLen;
+ }
+ else {
+ /* skip */
+ byte email = FALSE;
+ byte pilot = FALSE;
+ byte id = 0;
+ int adv;
+
+ if (joint[0] == 0x2a && joint[1] == 0x86) /* email id hdr */
+ email = TRUE;
+
+ if (joint[0] == 0x9 && joint[1] == 0x92) { /* uid id hdr */
+ /* last value of OID is the type of pilot attribute */
+ id = cert->source[cert->srcIdx + oidSz - 1];
+ pilot = TRUE;
+ }
+
+ cert->srcIdx += oidSz + 1;
+
+ if (GetLength(cert->source, &cert->srcIdx, &adv, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if (adv > (int)(ASN_NAME_MAX - idx)) {
+ WOLFSSL_MSG("ASN name too big, skipping");
+ tooBig = TRUE;
+ }
+
+ if (email) {
+ if ( (14 + adv) > (int)(ASN_NAME_MAX - idx)) {
+ WOLFSSL_MSG("ASN name too big, skipping");
+ tooBig = TRUE;
+ }
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/emailAddress=", 14);
+ idx += 14;
+ }
+
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectEmail = (char*)&cert->source[cert->srcIdx];
+ cert->subjectEmailLen = adv;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->emailIdx = cert->srcIdx;
+ dName->emailLen = adv;
+ #endif /* OPENSSL_EXTRA */
+ #ifndef IGNORE_NAME_CONSTRAINTS
+ {
+ DNS_entry* emailName = NULL;
+
+ emailName = (DNS_entry*)XMALLOC(sizeof(DNS_entry),
+ cert->heap, DYNAMIC_TYPE_ALTNAME);
+ if (emailName == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ return MEMORY_E;
+ }
+ emailName->type = 0;
+ emailName->name = (char*)XMALLOC(adv + 1,
+ cert->heap, DYNAMIC_TYPE_ALTNAME);
+ if (emailName->name == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ XFREE(emailName, cert->heap, DYNAMIC_TYPE_ALTNAME);
+ return MEMORY_E;
+ }
+ emailName->len = adv;
+ XMEMCPY(emailName->name,
+ &cert->source[cert->srcIdx], adv);
+ emailName->name[adv] = '\0';
+
+ emailName->next = cert->altEmailNames;
+ cert->altEmailNames = emailName;
+ }
+ #endif /* IGNORE_NAME_CONSTRAINTS */
+ if (!tooBig) {
+ XMEMCPY(&full[idx], &cert->source[cert->srcIdx], adv);
+ idx += adv;
+ }
+ }
+
+ if (pilot) {
+ if ( (5 + adv) > (int)(ASN_NAME_MAX - idx)) {
+ WOLFSSL_MSG("ASN name too big, skipping");
+ tooBig = TRUE;
+ }
+ if (!tooBig) {
+ switch (id) {
+ case ASN_USER_ID:
+ XMEMCPY(&full[idx], "/UID=", 5);
+ idx += 5;
+ #if defined(OPENSSL_EXTRA) || \
+ defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->uidIdx = cert->srcIdx;
+ dName->uidLen = adv;
+ #endif /* OPENSSL_EXTRA */
+ break;
+
+ case ASN_DOMAIN_COMPONENT:
+ XMEMCPY(&full[idx], "/DC=", 4);
+ idx += 4;
+ #if defined(OPENSSL_EXTRA) || \
+ defined(OPENSSL_EXTRA_X509_SMALL)
+ dName->dcIdx[dcnum] = cert->srcIdx;
+ dName->dcLen[dcnum] = adv;
+ dName->dcNum = dcnum + 1;
+ dcnum++;
+ #endif /* OPENSSL_EXTRA */
+ break;
+
+ default:
+ WOLFSSL_MSG("Unknown pilot attribute type");
+ return ASN_PARSE_E;
+ }
+ XMEMCPY(&full[idx], &cert->source[cert->srcIdx], adv);
+ idx += adv;
+ }
+ }
+
+ cert->srcIdx += adv;
+ }
+ }
+ full[idx++] = 0;
+
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ {
+ int totalLen = 0;
+ int i = 0;
+
+ if (dName->cnLen != 0)
+ totalLen += dName->cnLen + 4;
+ if (dName->snLen != 0)
+ totalLen += dName->snLen + 4;
+ if (dName->cLen != 0)
+ totalLen += dName->cLen + 3;
+ if (dName->lLen != 0)
+ totalLen += dName->lLen + 3;
+ if (dName->stLen != 0)
+ totalLen += dName->stLen + 4;
+ if (dName->oLen != 0)
+ totalLen += dName->oLen + 3;
+ if (dName->ouLen != 0)
+ totalLen += dName->ouLen + 4;
+ if (dName->emailLen != 0)
+ totalLen += dName->emailLen + 14;
+ if (dName->uidLen != 0)
+ totalLen += dName->uidLen + 5;
+ if (dName->serialLen != 0)
+ totalLen += dName->serialLen + 14;
+ if (dName->dcNum != 0){
+ for (i = 0;i < dName->dcNum;i++)
+ totalLen += dName->dcLen[i] + 4;
+ }
+
+ dName->fullName = (char*)XMALLOC(totalLen + 1, cert->heap,
+ DYNAMIC_TYPE_X509);
+ if (dName->fullName != NULL) {
+ idx = 0;
+
+ if (dName->cnLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_COMMON_NAME, 4);
+ idx += 4;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->cnIdx], dName->cnLen);
+ dName->cnIdx = idx;
+ idx += dName->cnLen;
+ }
+ if (dName->snLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_SUR_NAME, 4);
+ idx += 4;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->snIdx], dName->snLen);
+ dName->snIdx = idx;
+ idx += dName->snLen;
+ }
+ if (dName->cLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_COUNTRY_NAME, 3);
+ idx += 3;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->cIdx], dName->cLen);
+ dName->cIdx = idx;
+ idx += dName->cLen;
+ }
+ if (dName->lLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_LOCALITY_NAME, 3);
+ idx += 3;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->lIdx], dName->lLen);
+ dName->lIdx = idx;
+ idx += dName->lLen;
+ }
+ if (dName->stLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_STATE_NAME, 4);
+ idx += 4;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->stIdx], dName->stLen);
+ dName->stIdx = idx;
+ idx += dName->stLen;
+ }
+ if (dName->oLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_ORG_NAME, 3);
+ idx += 3;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->oIdx], dName->oLen);
+ dName->oIdx = idx;
+ idx += dName->oLen;
+ }
+ if (dName->ouLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_ORGUNIT_NAME, 4);
+ idx += 4;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->ouIdx], dName->ouLen);
+ dName->ouIdx = idx;
+ idx += dName->ouLen;
+ }
+ if (dName->emailLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], "/emailAddress=", 14);
+ idx += 14;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->emailIdx], dName->emailLen);
+ dName->emailIdx = idx;
+ idx += dName->emailLen;
+ }
+ for (i = 0;i < dName->dcNum;i++){
+ if (dName->dcLen[i] != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_DOMAIN_COMPONENT, 4);
+ idx += 4;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->dcIdx[i]], dName->dcLen[i]);
+ dName->dcIdx[i] = idx;
+ idx += dName->dcLen[i];
+ }
+ }
+ if (dName->uidLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], "/UID=", 5);
+ idx += 5;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->uidIdx], dName->uidLen);
+ dName->uidIdx = idx;
+ idx += dName->uidLen;
+ }
+ if (dName->serialLen != 0) {
+ dName->entryCount++;
+ XMEMCPY(&dName->fullName[idx], WOLFSSL_SERIAL_NUMBER, 14);
+ idx += 14;
+ XMEMCPY(&dName->fullName[idx],
+ &cert->source[dName->serialIdx], dName->serialLen);
+ dName->serialIdx = idx;
+ idx += dName->serialLen;
+ }
+ dName->fullName[idx] = '\0';
+ dName->fullNameLen = totalLen;
+ }
+ }
+ #endif /* OPENSSL_EXTRA */
+
+ return 0;
+}
+
+
+#ifndef NO_ASN_TIME
+
+/* two byte date/time, add to value */
+static WC_INLINE void GetTime(int* value, const byte* date, int* idx)
+{
+ int i = *idx;
+
+ *value += btoi(date[i++]) * 10;
+ *value += btoi(date[i++]);
+
+ *idx = i;
+}
+
+int ExtractDate(const unsigned char* date, unsigned char format,
+ struct tm* certTime, int* idx)
+{
+ XMEMSET(certTime, 0, sizeof(certTime));
+
+ if (format == ASN_UTC_TIME) {
+ /*if (btoi(date[0]) >= 5)
+ certTime->tm_year = 1900;
+ else
+ certTime->tm_year = 2000;*/
+ }
+ else { /* format == GENERALIZED_TIME */
+ //certTime->tm_year += btoi(date[*idx]) * 1000; *idx = *idx + 1;
+ //certTime->tm_year += btoi(date[*idx]) * 100; *idx = *idx + 1;
+ }
+
+ /* adjust tm_year, tm_mon */
+ /*GetTime((int*)&certTime->tm_year, date, idx); certTime->tm_year -= 1900;
+ GetTime((int*)&certTime->tm_mon, date, idx); certTime->tm_mon -= 1;
+ GetTime((int*)&certTime->tm_mday, date, idx);
+ GetTime((int*)&certTime->tm_hour, date, idx);
+ GetTime((int*)&certTime->tm_min, date, idx);
+ GetTime((int*)&certTime->tm_sec, date, idx);*/
+
+ return 1;
+}
+
+
+#if defined(OPENSSL_ALL) || defined(WOLFSSL_MYSQL_COMPATIBLE) || \
+ defined(OPENSSL_EXTRA) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
+int GetTimeString(byte* date, int format, char* buf, int len)
+{
+ struct tm t;
+ int idx = 0;
+
+ if (!ExtractDate(date, (unsigned char)format, &t, &idx)) {
+ return 0;
+ }
+
+ if (date[idx] != 'Z') {
+ WOLFSSL_MSG("UTCtime, not Zulu") ;
+ return 0;
+ }
+
+ /* place month in buffer */
+ buf[0] = '\0';
+ switch(t.tm_mon) {
+ case 0: XSTRNCAT(buf, "Jan ", 4); break;
+ case 1: XSTRNCAT(buf, "Feb ", 4); break;
+ case 2: XSTRNCAT(buf, "Mar ", 4); break;
+ case 3: XSTRNCAT(buf, "Apr ", 4); break;
+ case 4: XSTRNCAT(buf, "May ", 4); break;
+ case 5: XSTRNCAT(buf, "Jun ", 4); break;
+ case 6: XSTRNCAT(buf, "Jul ", 4); break;
+ case 7: XSTRNCAT(buf, "Aug ", 4); break;
+ case 8: XSTRNCAT(buf, "Sep ", 4); break;
+ case 9: XSTRNCAT(buf, "Oct ", 4); break;
+ case 10: XSTRNCAT(buf, "Nov ", 4); break;
+ case 11: XSTRNCAT(buf, "Dec ", 4); break;
+ default:
+ return 0;
+
+ }
+ idx = 4; /* use idx now for char buffer */
+ buf[idx] = ' ';
+
+ XSNPRINTF(buf + idx, len - idx, "%2d %02d:%02d:%02d %d GMT",
+ t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec, t.tm_year + 1900);
+
+ return 1;
+}
+#endif /* OPENSSL_ALL || WOLFSSL_MYSQL_COMPATIBLE || WOLFSSL_NGINX || WOLFSSL_HAPROXY */
+
+
+#if defined(USE_WOLF_VALIDDATE)
+
+/* to the second */
+static int DateGreaterThan(const struct tm* a, const struct tm* b)
+{
+ /*if (a->tm_year > b->tm_year)
+ return 1;
+
+ if (a->tm_year == b->tm_year && a->tm_mon > b->tm_mon)
+ return 1;
+
+ if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
+ a->tm_mday > b->tm_mday)
+ return 1;
+
+ if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
+ a->tm_mday == b->tm_mday && a->tm_hour > b->tm_hour)
+ return 1;
+
+ if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
+ a->tm_mday == b->tm_mday && a->tm_hour == b->tm_hour &&
+ a->tm_min > b->tm_min)
+ return 1;
+
+ if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
+ a->tm_mday == b->tm_mday && a->tm_hour == b->tm_hour &&
+ a->tm_min == b->tm_min && a->tm_sec > b->tm_sec)
+ return 1;*/
+
+ return 0; /* false */
+}
+
+
+static WC_INLINE int DateLessThan(const struct tm* a, const struct tm* b)
+{
+ return DateGreaterThan(b,a);
+}
+
+/* like atoi but only use first byte */
+/* Make sure before and after dates are valid */
+int ValidateDate(const byte* date, byte format, int dateType)
+{
+ time_t ltime;
+ struct tm certTime;
+ struct tm* localTime;
+ struct tm* tmpTime = NULL;
+ int i = 0;
+ int timeDiff = 0 ;
+ int diffHH = 0 ; int diffMM = 0 ;
+ int diffSign = 0 ;
+
+#if defined(NEED_TMP_TIME)
+ struct tm tmpTimeStorage;
+ tmpTime = &tmpTimeStorage;
+#else
+ (void)tmpTime;
+#endif
+
+ ltime = XTIME(0);
+
+#ifdef WOLFSSL_BEFORE_DATE_CLOCK_SKEW
+ if (dateType == BEFORE) {
+ WOLFSSL_MSG("Skewing local time for before date check");
+ ltime += WOLFSSL_BEFORE_DATE_CLOCK_SKEW;
+ }
+#endif
+
+#ifdef WOLFSSL_AFTER_DATE_CLOCK_SKEW
+ if (dateType == AFTER) {
+ WOLFSSL_MSG("Skewing local time for after date check");
+ ltime -= WOLFSSL_AFTER_DATE_CLOCK_SKEW;
+ }
+#endif
+
+ if (!ExtractDate(date, format, &certTime, &i)) {
+ WOLFSSL_MSG("Error extracting the date");
+ return 0;
+ }
+
+ if ((date[i] == '+') || (date[i] == '-')) {
+ WOLFSSL_MSG("Using time differential, not Zulu") ;
+ diffSign = date[i++] == '+' ? 1 : -1 ;
+ GetTime(&diffHH, date, &i);
+ GetTime(&diffMM, date, &i);
+ timeDiff = diffSign * (diffHH*60 + diffMM) * 60 ;
+ } else if (date[i] != 'Z') {
+ WOLFSSL_MSG("UTCtime, niether Zulu or time differential") ;
+ return 0;
+ }
+
+ ltime -= (time_t)timeDiff ;
+ localTime = XGMTIME(<ime, tmpTime);
+
+ if (localTime == NULL) {
+ WOLFSSL_MSG("XGMTIME failed");
+ return 0;
+ }
+
+ if (dateType == BEFORE) {
+ if (DateLessThan(localTime, &certTime)) {
+ WOLFSSL_MSG("Date BEFORE check failed");
+ return 0;
+ }
+ }
+ else { /* dateType == AFTER */
+ if (DateGreaterThan(localTime, &certTime)) {
+ WOLFSSL_MSG("Date AFTER check failed");
+ return 0;
+ }
+ }
+
+ return 1;
+}
+#endif /* USE_WOLF_VALIDDATE */
+
+int wc_GetTime(void* timePtr, word32 timeSize)
+{
+ time_t* ltime = (time_t*)timePtr;
+
+ if (timePtr == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ if ((word32)sizeof(time_t) > timeSize) {
+ return BUFFER_E;
+ }
+
+ *ltime = XTIME(0);
+
+ return 0;
+}
+
+#endif /* !NO_ASN_TIME */
+
+
+/* Get date buffer, format and length. Returns 0=success or error */
+static int GetDateInfo(const byte* source, word32* idx, const byte** pDate,
+ byte* pFormat, int* pLength, word32 maxIdx)
+{
+ int length;
+ byte format;
+
+ if (source == NULL || idx == NULL)
+ return BAD_FUNC_ARG;
+
+ /* get ASN format header */
+ if (*idx+1 > maxIdx)
+ return BUFFER_E;
+ format = source[*idx];
+ *idx += 1;
+ if (format != ASN_UTC_TIME && format != ASN_GENERALIZED_TIME)
+ return ASN_TIME_E;
+
+ /* get length */
+ if (GetLength(source, idx, &length, maxIdx) < 0)
+ return ASN_PARSE_E;
+ if (length > MAX_DATE_SIZE || length < MIN_DATE_SIZE)
+ return ASN_DATE_SZ_E;
+
+ /* return format, date and length */
+ if (pFormat)
+ *pFormat = format;
+ if (pDate)
+ *pDate = &source[*idx];
+ if (pLength)
+ *pLength = length;
+
+ *idx += length;
+
+ return 0;
+}
+
+static int GetDate(DecodedCert* cert, int dateType, int verify)
+{
+ int ret, length;
+ const byte *datePtr = NULL;
+ byte date[MAX_DATE_SIZE];
+ byte format;
+ word32 startIdx = 0;
+
+ if (dateType == BEFORE)
+ cert->beforeDate = &cert->source[cert->srcIdx];
+ else
+ cert->afterDate = &cert->source[cert->srcIdx];
+ startIdx = cert->srcIdx;
+
+ ret = GetDateInfo(cert->source, &cert->srcIdx, &datePtr, &format,
+ &length, cert->maxIdx);
+ if (ret < 0)
+ return ret;
+
+ XMEMSET(date, 0, MAX_DATE_SIZE);
+ XMEMCPY(date, datePtr, length);
+
+ if (dateType == BEFORE)
+ cert->beforeDateLen = cert->srcIdx - startIdx;
+ else
+ cert->afterDateLen = cert->srcIdx - startIdx;
+
+#ifndef NO_ASN_TIME
+ if (verify != NO_VERIFY && !XVALIDATE_DATE(date, format, dateType)) {
+ if (dateType == BEFORE)
+ return ASN_BEFORE_DATE_E;
+ else
+ return ASN_AFTER_DATE_E;
+ }
+#else
+ (void)verify;
+#endif
+
+ return 0;
+}
+
+static int GetValidity(DecodedCert* cert, int verify)
+{
+ int length;
+ int badDate = 0;
+
+ if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if (GetDate(cert, BEFORE, verify) < 0)
+ badDate = ASN_BEFORE_DATE_E; /* continue parsing */
+
+ if (GetDate(cert, AFTER, verify) < 0)
+ return ASN_AFTER_DATE_E;
+
+ if (badDate != 0)
+ return badDate;
+
+ return 0;
+}
+
+
+int wc_GetDateInfo(const byte* certDate, int certDateSz, const byte** date,
+ byte* format, int* length)
+{
+ int ret;
+ word32 idx = 0;
+
+ ret = GetDateInfo(certDate, &idx, date, format, length, certDateSz);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+#ifndef NO_ASN_TIME
+int wc_GetDateAsCalendarTime(const byte* date, int length, byte format,
+ struct tm* timearg)
+{
+ int idx = 0;
+ (void)length;
+ if (!ExtractDate(date, format, timearg, &idx))
+ return ASN_TIME_E;
+ return 0;
+}
+
+#if defined(WOLFSSL_CERT_GEN) && defined(WOLFSSL_ALT_NAMES)
+int wc_GetCertDates(Cert* cert, struct tm* before, struct tm* after)
+{
+ int ret = 0;
+ const byte* date;
+ byte format;
+ int length;
+
+ if (cert == NULL)
+ return BAD_FUNC_ARG;
+
+ if (before && cert->beforeDateSz > 0) {
+ ret = wc_GetDateInfo(cert->beforeDate, cert->beforeDateSz, &date,
+ &format, &length);
+ if (ret == 0)
+ ret = wc_GetDateAsCalendarTime(date, length, format, before);
+ }
+ if (after && cert->afterDateSz > 0) {
+ ret = wc_GetDateInfo(cert->afterDate, cert->afterDateSz, &date,
+ &format, &length);
+ if (ret == 0)
+ ret = wc_GetDateAsCalendarTime(date, length, format, after);
+ }
+
+ return ret;
+}
+#endif /* WOLFSSL_CERT_GEN && WOLFSSL_ALT_NAMES */
+#endif /* !NO_ASN_TIME */
+
+
+int DecodeToKey(DecodedCert* cert, int verify)
+{
+ int badDate = 0;
+ int ret;
+
+ if ( (ret = GetCertHeader(cert)) < 0)
+ return ret;
+
+ WOLFSSL_MSG("Got Cert Header");
+
+ if ( (ret = GetAlgoId(cert->source, &cert->srcIdx, &cert->signatureOID,
+ oidSigType, cert->maxIdx)) < 0)
+ return ret;
+
+ WOLFSSL_MSG("Got Algo ID");
+
+ if ( (ret = GetName(cert, ISSUER)) < 0)
+ return ret;
+
+ if ( (ret = GetValidity(cert, verify)) < 0)
+ badDate = ret;
+
+ if ( (ret = GetName(cert, SUBJECT)) < 0)
+ return ret;
+
+ WOLFSSL_MSG("Got Subject Name");
+
+ if ( (ret = GetKey(cert)) < 0)
+ return ret;
+
+ WOLFSSL_MSG("Got Key");
+
+ if (badDate != 0)
+ return badDate;
+
+ return ret;
+}
+
+static int GetSignature(DecodedCert* cert)
+{
+ int length;
+ int ret;
+ ret = CheckBitString(cert->source, &cert->srcIdx, &length, cert->maxIdx, 1,
+ NULL);
+ if (ret != 0)
+ return ret;
+
+ cert->sigLength = length;
+ cert->signature = &cert->source[cert->srcIdx];
+ cert->srcIdx += cert->sigLength;
+
+ return 0;
+}
+
+static word32 SetOctetString8Bit(word32 len, byte* output)
+{
+ output[0] = ASN_OCTET_STRING;
+ output[1] = (byte)len;
+ return 2;
+}
+
+static word32 SetDigest(const byte* digest, word32 digSz, byte* output)
+{
+ word32 idx = SetOctetString8Bit(digSz, output);
+ XMEMCPY(&output[idx], digest, digSz);
+
+ return idx + digSz;
+}
+
+
+static word32 BytePrecision(word32 value)
+{
+ word32 i;
+ for (i = sizeof(value); i; --i)
+ if (value >> ((i - 1) * WOLFSSL_BIT_SIZE))
+ break;
+
+ return i;
+}
+
+
+WOLFSSL_LOCAL word32 SetLength(word32 length, byte* output)
+{
+ word32 i = 0, j;
+
+ if (length < ASN_LONG_LENGTH)
+ output[i++] = (byte)length;
+ else {
+ output[i++] = (byte)(BytePrecision(length) | ASN_LONG_LENGTH);
+
+ for (j = BytePrecision(length); j; --j) {
+ output[i] = (byte)(length >> ((j - 1) * WOLFSSL_BIT_SIZE));
+ i++;
+ }
+ }
+
+ return i;
+}
+
+
+WOLFSSL_LOCAL word32 SetSequence(word32 len, byte* output)
+{
+ output[0] = ASN_SEQUENCE | ASN_CONSTRUCTED;
+ return SetLength(len, output + 1) + 1;
+}
+
+WOLFSSL_LOCAL word32 SetOctetString(word32 len, byte* output)
+{
+ output[0] = ASN_OCTET_STRING;
+ return SetLength(len, output + 1) + 1;
+}
+
+/* Write a set header to output */
+WOLFSSL_LOCAL word32 SetSet(word32 len, byte* output)
+{
+ output[0] = ASN_SET | ASN_CONSTRUCTED;
+ return SetLength(len, output + 1) + 1;
+}
+
+WOLFSSL_LOCAL word32 SetImplicit(byte tag, byte number, word32 len, byte* output)
+{
+
+ output[0] = ((tag == ASN_SEQUENCE || tag == ASN_SET) ? ASN_CONSTRUCTED : 0)
+ | ASN_CONTEXT_SPECIFIC | number;
+ return SetLength(len, output + 1) + 1;
+}
+
+WOLFSSL_LOCAL word32 SetExplicit(byte number, word32 len, byte* output)
+{
+ output[0] = ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | number;
+ return SetLength(len, output + 1) + 1;
+}
+
+
+#if defined(HAVE_ECC)
+
+static int SetCurve(ecc_key* key, byte* output)
+{
+#ifdef HAVE_OID_ENCODING
+ int ret;
+#endif
+ int idx = 0;
+ word32 oidSz = 0;
+
+ /* validate key */
+ if (key == NULL || key->dp == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+#ifdef HAVE_OID_ENCODING
+ ret = EncodeObjectId(key->dp->oid, key->dp->oidSz, NULL, &oidSz);
+ if (ret != 0) {
+ return ret;
+ }
+#else
+ oidSz = key->dp->oidSz;
+#endif
+
+ idx += SetObjectId(oidSz, output);
+
+#ifdef HAVE_OID_ENCODING
+ ret = EncodeObjectId(key->dp->oid, key->dp->oidSz, output+idx, &oidSz);
+ if (ret != 0) {
+ return ret;
+ }
+#else
+ XMEMCPY(output+idx, key->dp->oid, oidSz);
+#endif
+ idx += oidSz;
+
+ return idx;
+}
+
+#endif /* HAVE_ECC */
+
+
+#ifdef HAVE_ECC
+static WC_INLINE int IsSigAlgoECDSA(int algoOID)
+{
+ /* ECDSA sigAlgo must not have ASN1 NULL parameters */
+ if (algoOID == CTC_SHAwECDSA || algoOID == CTC_SHA256wECDSA ||
+ algoOID == CTC_SHA384wECDSA || algoOID == CTC_SHA512wECDSA) {
+ return 1;
+ }
+
+ return 0;
+}
+#endif
+
+WOLFSSL_LOCAL word32 SetAlgoID(int algoOID, byte* output, int type, int curveSz)
+{
+ word32 tagSz, idSz, seqSz, algoSz = 0;
+ const byte* algoName = 0;
+ byte ID_Length[1 + MAX_LENGTH_SZ];
+ byte seqArray[MAX_SEQ_SZ + 1]; /* add object_id to end */
+
+ tagSz = (type == oidHashType ||
+ (type == oidSigType
+ #ifdef HAVE_ECC
+ && !IsSigAlgoECDSA(algoOID)
+ #endif
+ #ifdef HAVE_ED25519
+ && algoOID != ED25519k
+ #endif
+ ) ||
+ (type == oidKeyType && algoOID == RSAk)) ? 2 : 0;
+
+ algoName = OidFromId(algoOID, type, &algoSz);
+
+ if (algoName == NULL) {
+ WOLFSSL_MSG("Unknown Algorithm");
+ return 0;
+ }
+
+ idSz = SetObjectId(algoSz, ID_Length);
+ seqSz = SetSequence(idSz + algoSz + tagSz + curveSz, seqArray);
+
+ XMEMCPY(output, seqArray, seqSz);
+ XMEMCPY(output + seqSz, ID_Length, idSz);
+ XMEMCPY(output + seqSz + idSz, algoName, algoSz);
+ if (tagSz == 2)
+ SetASNNull(&output[seqSz + idSz + algoSz]);
+
+ return seqSz + idSz + algoSz + tagSz;
+
+}
+
+
+word32 wc_EncodeSignature(byte* out, const byte* digest, word32 digSz,
+ int hashOID)
+{
+ byte digArray[MAX_ENCODED_DIG_SZ];
+ byte algoArray[MAX_ALGO_SZ];
+ byte seqArray[MAX_SEQ_SZ];
+ word32 encDigSz, algoSz, seqSz;
+
+ encDigSz = SetDigest(digest, digSz, digArray);
+ algoSz = SetAlgoID(hashOID, algoArray, oidHashType, 0);
+ seqSz = SetSequence(encDigSz + algoSz, seqArray);
+
+ XMEMCPY(out, seqArray, seqSz);
+ XMEMCPY(out + seqSz, algoArray, algoSz);
+ XMEMCPY(out + seqSz + algoSz, digArray, encDigSz);
+
+ return encDigSz + algoSz + seqSz;
+}
+
+
+int wc_GetCTC_HashOID(int type)
+{
+ int ret;
+ enum wc_HashType hType;
+
+ hType = wc_HashTypeConvert(type);
+ ret = wc_HashGetOID(hType);
+ if (ret < 0)
+ ret = 0; /* backwards compatibility */
+
+ return ret;
+}
+
+void InitSignatureCtx(SignatureCtx* sigCtx, void* heap, int devId)
+{
+ if (sigCtx) {
+ XMEMSET(sigCtx, 0, sizeof(SignatureCtx));
+ sigCtx->devId = devId;
+ sigCtx->heap = heap;
+ }
+}
+
+void FreeSignatureCtx(SignatureCtx* sigCtx)
+{
+ if (sigCtx == NULL)
+ return;
+
+ if (sigCtx->digest) {
+ XFREE(sigCtx->digest, sigCtx->heap, DYNAMIC_TYPE_DIGEST);
+ sigCtx->digest = NULL;
+ }
+#ifndef NO_RSA
+ if (sigCtx->plain) {
+ XFREE(sigCtx->plain, sigCtx->heap, DYNAMIC_TYPE_SIGNATURE);
+ sigCtx->plain = NULL;
+ }
+#endif
+ if (sigCtx->key.ptr) {
+ switch (sigCtx->keyOID) {
+ #ifndef NO_RSA
+ case RSAk:
+ wc_FreeRsaKey(sigCtx->key.rsa);
+ XFREE(sigCtx->key.ptr, sigCtx->heap, DYNAMIC_TYPE_RSA);
+ break;
+ #endif /* !NO_RSA */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ wc_ecc_free(sigCtx->key.ecc);
+ XFREE(sigCtx->key.ecc, sigCtx->heap, DYNAMIC_TYPE_ECC);
+ break;
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+ case ED25519k:
+ wc_ed25519_free(sigCtx->key.ed25519);
+ XFREE(sigCtx->key.ed25519, sigCtx->heap, DYNAMIC_TYPE_ED25519);
+ break;
+ #endif /* HAVE_ED25519 */
+ default:
+ break;
+ } /* switch (keyOID) */
+ sigCtx->key.ptr = NULL;
+ }
+
+ /* reset state, we are done */
+ sigCtx->state = SIG_STATE_BEGIN;
+}
+
+static int HashForSignature(const byte* buf, word32 bufSz, word32 sigOID,
+ byte* digest, int* typeH, int* digestSz, int verify)
+{
+ int ret = 0;
+
+ (void)verify;
+
+ switch (sigOID) {
+ #if defined(WOLFSSL_MD2)
+ case CTC_MD2wRSA:
+ if (!verify) {
+ ret = HASH_TYPE_E;
+ WOLFSSL_MSG("MD2 not supported for signing");
+ }
+ else if ((ret = wc_Md2Hash(buf, bufSz, digest)) == 0) {
+ *typeH = MD2h;
+ *digestSz = MD2_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifndef NO_MD5
+ case CTC_MD5wRSA:
+ if ((ret = wc_Md5Hash(buf, bufSz, digest)) == 0) {
+ *typeH = MD5h;
+ *digestSz = WC_MD5_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifndef NO_SHA
+ case CTC_SHAwRSA:
+ case CTC_SHAwDSA:
+ case CTC_SHAwECDSA:
+ if ((ret = wc_ShaHash(buf, bufSz, digest)) == 0) {
+ *typeH = SHAh;
+ *digestSz = WC_SHA_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case CTC_SHA224wRSA:
+ case CTC_SHA224wECDSA:
+ if ((ret = wc_Sha224Hash(buf, bufSz, digest)) == 0) {
+ *typeH = SHA224h;
+ *digestSz = WC_SHA224_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case CTC_SHA256wRSA:
+ case CTC_SHA256wECDSA:
+ if ((ret = wc_Sha256Hash(buf, bufSz, digest)) == 0) {
+ *typeH = SHA256h;
+ *digestSz = WC_SHA256_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case CTC_SHA384wRSA:
+ case CTC_SHA384wECDSA:
+ if ((ret = wc_Sha384Hash(buf, bufSz, digest)) == 0) {
+ *typeH = SHA384h;
+ *digestSz = WC_SHA384_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case CTC_SHA512wRSA:
+ case CTC_SHA512wECDSA:
+ if ((ret = wc_Sha512Hash(buf, bufSz, digest)) == 0) {
+ *typeH = SHA512h;
+ *digestSz = WC_SHA512_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ case CTC_ED25519:
+ /* Hashes done in signing operation.
+ * Two dependent hashes with prefixes performed.
+ */
+ break;
+ default:
+ ret = HASH_TYPE_E;
+ WOLFSSL_MSG("Hash for Signature has unsupported type");
+ }
+
+ return ret;
+}
+
+/* Return codes: 0=Success, Negative (see error-crypt.h), ASN_SIG_CONFIRM_E */
+static int ConfirmSignature(SignatureCtx* sigCtx,
+ const byte* buf, word32 bufSz,
+ const byte* key, word32 keySz, word32 keyOID,
+ const byte* sig, word32 sigSz, word32 sigOID)
+{
+ int ret = 0;
+
+ if (sigCtx == NULL || buf == NULL || bufSz == 0 || key == NULL ||
+ keySz == 0 || sig == NULL || sigSz == 0) {
+ return BAD_FUNC_ARG;
+ }
+
+ (void)key;
+ (void)keySz;
+ (void)sig;
+ (void)sigSz;
+
+ WOLFSSL_ENTER("ConfirmSignature");
+
+ switch (sigCtx->state) {
+ case SIG_STATE_BEGIN:
+ {
+ sigCtx->digest = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, sigCtx->heap,
+ DYNAMIC_TYPE_DIGEST);
+ if (sigCtx->digest == NULL) {
+ ERROR_OUT(MEMORY_E, exit_cs);
+ }
+
+ sigCtx->state = SIG_STATE_HASH;
+ } /* SIG_STATE_BEGIN */
+ FALL_THROUGH;
+
+ case SIG_STATE_HASH:
+ {
+ ret = HashForSignature(buf, bufSz, sigOID, sigCtx->digest,
+ &sigCtx->typeH, &sigCtx->digestSz, 1);
+ if (ret != 0) {
+ goto exit_cs;
+ }
+
+ sigCtx->state = SIG_STATE_KEY;
+ } /* SIG_STATE_HASH */
+ FALL_THROUGH;
+
+ case SIG_STATE_KEY:
+ {
+ sigCtx->keyOID = keyOID;
+
+ switch (keyOID) {
+ #ifndef NO_RSA
+ case RSAk:
+ {
+ word32 idx = 0;
+
+ sigCtx->key.rsa = (RsaKey*)XMALLOC(sizeof(RsaKey),
+ sigCtx->heap, DYNAMIC_TYPE_RSA);
+ sigCtx->plain = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ,
+ sigCtx->heap, DYNAMIC_TYPE_SIGNATURE);
+ if (sigCtx->key.rsa == NULL || sigCtx->plain == NULL) {
+ ERROR_OUT(MEMORY_E, exit_cs);
+ }
+ if ((ret = wc_InitRsaKey_ex(sigCtx->key.rsa, sigCtx->heap,
+ sigCtx->devId)) != 0) {
+ goto exit_cs;
+ }
+ if (sigSz > MAX_ENCODED_SIG_SZ) {
+ WOLFSSL_MSG("Verify Signature is too big");
+ ERROR_OUT(BUFFER_E, exit_cs);
+ }
+ if ((ret = wc_RsaPublicKeyDecode(key, &idx, sigCtx->key.rsa,
+ keySz)) != 0) {
+ WOLFSSL_MSG("ASN Key decode error RSA");
+ goto exit_cs;
+ }
+ XMEMCPY(sigCtx->plain, sig, sigSz);
+ sigCtx->out = NULL;
+
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ sigCtx->asyncDev = &sigCtx->key.rsa->asyncDev;
+ #endif
+ break;
+ }
+ #endif /* !NO_RSA */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ {
+ word32 idx = 0;
+
+ sigCtx->verify = 0;
+ sigCtx->key.ecc = (ecc_key*)XMALLOC(sizeof(ecc_key),
+ sigCtx->heap, DYNAMIC_TYPE_ECC);
+ if (sigCtx->key.ecc == NULL) {
+ ERROR_OUT(MEMORY_E, exit_cs);
+ }
+ if ((ret = wc_ecc_init_ex(sigCtx->key.ecc, sigCtx->heap,
+ sigCtx->devId)) < 0) {
+ goto exit_cs;
+ }
+ ret = wc_EccPublicKeyDecode(key, &idx, sigCtx->key.ecc,
+ keySz);
+ if (ret < 0) {
+ WOLFSSL_MSG("ASN Key import error ECC");
+ goto exit_cs;
+ }
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ sigCtx->asyncDev = &sigCtx->key.ecc->asyncDev;
+ #endif
+ break;
+ }
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+ case ED25519k:
+ {
+ sigCtx->verify = 0;
+ sigCtx->key.ed25519 = (ed25519_key*)XMALLOC(
+ sizeof(ed25519_key), sigCtx->heap,
+ DYNAMIC_TYPE_ED25519);
+ if (sigCtx->key.ed25519 == NULL) {
+ ERROR_OUT(MEMORY_E, exit_cs);
+ }
+ if ((ret = wc_ed25519_init(sigCtx->key.ed25519)) < 0) {
+ goto exit_cs;
+ }
+ if ((ret = wc_ed25519_import_public(key, keySz,
+ sigCtx->key.ed25519)) < 0) {
+ WOLFSSL_MSG("ASN Key import error ED25519");
+ goto exit_cs;
+ }
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ sigCtx->asyncDev = &sigCtx->key.ed25519->asyncDev;
+ #endif
+ break;
+ }
+ #endif
+ default:
+ WOLFSSL_MSG("Verify Key type unknown");
+ ret = ASN_UNKNOWN_OID_E;
+ break;
+ } /* switch (keyOID) */
+
+ if (ret != 0) {
+ goto exit_cs;
+ }
+
+ sigCtx->state = SIG_STATE_DO;
+
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ if (sigCtx->devId != INVALID_DEVID && sigCtx->asyncDev && sigCtx->asyncCtx) {
+ /* make sure event is intialized */
+ WOLF_EVENT* event = &sigCtx->asyncDev->event;
+ ret = wolfAsync_EventInit(event, WOLF_EVENT_TYPE_ASYNC_WOLFSSL,
+ sigCtx->asyncCtx, WC_ASYNC_FLAG_CALL_AGAIN);
+ }
+ #endif
+ } /* SIG_STATE_KEY */
+ FALL_THROUGH;
+
+ case SIG_STATE_DO:
+ {
+ switch (keyOID) {
+ #ifndef NO_RSA
+ case RSAk:
+ {
+ #ifdef HAVE_PK_CALLBACKS
+ if (sigCtx->pkCbRsa) {
+ ret = sigCtx->pkCbRsa(
+ sigCtx->plain, sigSz, &sigCtx->out,
+ key, keySz,
+ sigCtx->pkCtxRsa);
+ }
+ else
+ #endif /* HAVE_PK_CALLBACKS */
+ {
+ ret = wc_RsaSSL_VerifyInline(sigCtx->plain, sigSz,
+ &sigCtx->out, sigCtx->key.rsa);
+ }
+ break;
+ }
+ #endif /* !NO_RSA */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ {
+ #ifdef HAVE_PK_CALLBACKS
+ if (sigCtx->pkCbEcc) {
+ ret = sigCtx->pkCbEcc(
+ sig, sigSz,
+ sigCtx->digest, sigCtx->digestSz,
+ key, keySz, &sigCtx->verify,
+ sigCtx->pkCtxEcc);
+ }
+ else
+ #endif /* HAVE_PK_CALLBACKS */
+ {
+ ret = wc_ecc_verify_hash(sig, sigSz, sigCtx->digest,
+ sigCtx->digestSz, &sigCtx->verify,
+ sigCtx->key.ecc);
+ }
+ break;
+ }
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+ case ED25519k:
+ {
+ ret = wc_ed25519_verify_msg(sig, sigSz, buf, bufSz,
+ &sigCtx->verify, sigCtx->key.ed25519);
+ break;
+ }
+ #endif
+ default:
+ break;
+ } /* switch (keyOID) */
+
+ if (ret < 0) {
+ /* treat all non async RSA errors as ASN_SIG_CONFIRM_E */
+ if (ret != WC_PENDING_E)
+ ret = ASN_SIG_CONFIRM_E;
+ goto exit_cs;
+ }
+
+ sigCtx->state = SIG_STATE_CHECK;
+ } /* SIG_STATE_DO */
+ FALL_THROUGH;
+
+ case SIG_STATE_CHECK:
+ {
+ switch (keyOID) {
+ #ifndef NO_RSA
+ case RSAk:
+ {
+ int encodedSigSz, verifySz;
+ #ifdef WOLFSSL_SMALL_STACK
+ byte* encodedSig = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ,
+ sigCtx->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (encodedSig == NULL) {
+ ERROR_OUT(MEMORY_E, exit_cs);
+ }
+ #else
+ byte encodedSig[MAX_ENCODED_SIG_SZ];
+ #endif
+
+ verifySz = ret;
+
+ /* make sure we're right justified */
+ encodedSigSz = wc_EncodeSignature(encodedSig,
+ sigCtx->digest, sigCtx->digestSz, sigCtx->typeH);
+ if (encodedSigSz == verifySz && sigCtx->out != NULL &&
+ XMEMCMP(sigCtx->out, encodedSig, encodedSigSz) == 0) {
+ ret = 0;
+ }
+ else {
+ WOLFSSL_MSG("RSA SSL verify match encode error");
+ ret = ASN_SIG_CONFIRM_E;
+ }
+
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(encodedSig, sigCtx->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ break;
+ }
+ #endif /* NO_RSA */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ {
+ if (sigCtx->verify == 1) {
+ ret = 0;
+ }
+ else {
+ WOLFSSL_MSG("ECC Verify didn't match");
+ ret = ASN_SIG_CONFIRM_E;
+ }
+ break;
+ }
+ #endif /* HAVE_ECC */
+ #ifdef HAVE_ED25519
+ case ED25519k:
+ {
+ if (sigCtx->verify == 1) {
+ ret = 0;
+ }
+ else {
+ WOLFSSL_MSG("ED25519 Verify didn't match");
+ ret = ASN_SIG_CONFIRM_E;
+ }
+ break;
+ }
+ #endif /* HAVE_ED25519 */
+ default:
+ break;
+ } /* switch (keyOID) */
+
+ break;
+ } /* SIG_STATE_CHECK */
+ } /* switch (sigCtx->state) */
+
+exit_cs:
+
+ WOLFSSL_LEAVE("ConfirmSignature", ret);
+
+ if (ret != WC_PENDING_E) {
+ FreeSignatureCtx(sigCtx);
+ }
+
+ return ret;
+}
+
+
+#ifndef IGNORE_NAME_CONSTRAINTS
+
+static int MatchBaseName(int type, const char* name, int nameSz,
+ const char* base, int baseSz)
+{
+ if (base == NULL || baseSz <= 0 || name == NULL || nameSz <= 0 ||
+ name[0] == '.' || nameSz < baseSz ||
+ (type != ASN_RFC822_TYPE && type != ASN_DNS_TYPE))
+ return 0;
+
+ /* If an email type, handle special cases where the base is only
+ * a domain, or is an email address itself. */
+ if (type == ASN_RFC822_TYPE) {
+ const char* p = NULL;
+ int count = 0;
+
+ if (base[0] != '.') {
+ p = base;
+ count = 0;
+
+ /* find the '@' in the base */
+ while (*p != '@' && count < baseSz) {
+ count++;
+ p++;
+ }
+
+ /* No '@' in base, reset p to NULL */
+ if (count >= baseSz)
+ p = NULL;
+ }
+
+ if (p == NULL) {
+ /* Base isn't an email address, it is a domain name,
+ * wind the name forward one character past its '@'. */
+ p = name;
+ count = 0;
+ while (*p != '@' && count < baseSz) {
+ count++;
+ p++;
+ }
+
+ if (count < baseSz && *p == '@') {
+ name = p + 1;
+ nameSz -= count + 1;
+ }
+ }
+ }
+
+ if ((type == ASN_DNS_TYPE || type == ASN_RFC822_TYPE) && base[0] == '.') {
+ int szAdjust = nameSz - baseSz;
+ name += szAdjust;
+ nameSz -= szAdjust;
+ }
+
+ while (nameSz > 0) {
+ if (XTOLOWER((unsigned char)*name++) !=
+ XTOLOWER((unsigned char)*base++))
+ return 0;
+ nameSz--;
+ }
+
+ return 1;
+}
+
+
+static int ConfirmNameConstraints(Signer* signer, DecodedCert* cert)
+{
+ if (signer == NULL || cert == NULL)
+ return 0;
+
+ /* Check against the excluded list */
+ if (signer->excludedNames) {
+ Base_entry* base = signer->excludedNames;
+
+ while (base != NULL) {
+ switch (base->type) {
+ case ASN_DNS_TYPE:
+ {
+ DNS_entry* name = cert->altNames;
+ while (name != NULL) {
+ if (MatchBaseName(ASN_DNS_TYPE,
+ name->name, name->len,
+ base->name, base->nameSz)) {
+ return 0;
+ }
+ name = name->next;
+ }
+ break;
+ }
+ case ASN_RFC822_TYPE:
+ {
+ DNS_entry* name = cert->altEmailNames;
+ while (name != NULL) {
+ if (MatchBaseName(ASN_RFC822_TYPE,
+ name->name, name->len,
+ base->name, base->nameSz)) {
+ return 0;
+ }
+ name = name->next;
+ }
+ break;
+ }
+ case ASN_DIR_TYPE:
+ {
+ /* allow permitted dirName smaller than actual subject */
+ if (cert->subjectRawLen >= base->nameSz &&
+ XMEMCMP(cert->subjectRaw, base->name,
+ base->nameSz) == 0) {
+ return 0;
+ }
+ break;
+ }
+ }; /* switch */
+ base = base->next;
+ }
+ }
+
+ /* Check against the permitted list */
+ if (signer->permittedNames != NULL) {
+ int needDns = 0;
+ int matchDns = 0;
+ int needEmail = 0;
+ int matchEmail = 0;
+ int needDir = 0;
+ int matchDir = 0;
+ Base_entry* base = signer->permittedNames;
+
+ while (base != NULL) {
+ switch (base->type) {
+ case ASN_DNS_TYPE:
+ {
+ DNS_entry* name = cert->altNames;
+
+ if (name != NULL)
+ needDns = 1;
+
+ while (name != NULL) {
+ matchDns = MatchBaseName(ASN_DNS_TYPE,
+ name->name, name->len,
+ base->name, base->nameSz);
+ name = name->next;
+ }
+ break;
+ }
+ case ASN_RFC822_TYPE:
+ {
+ DNS_entry* name = cert->altEmailNames;
+
+ if (name != NULL)
+ needEmail = 1;
+
+ while (name != NULL) {
+ matchEmail = MatchBaseName(ASN_DNS_TYPE,
+ name->name, name->len,
+ base->name, base->nameSz);
+ name = name->next;
+ }
+ break;
+ }
+ case ASN_DIR_TYPE:
+ {
+ /* allow permitted dirName smaller than actual subject */
+ needDir = 1;
+ if (cert->subjectRaw != NULL &&
+ cert->subjectRawLen >= base->nameSz &&
+ XMEMCMP(cert->subjectRaw, base->name,
+ base->nameSz) == 0) {
+ matchDir = 1;
+ }
+ break;
+ }
+ } /* switch */
+ base = base->next;
+ }
+
+ if ((needDns && !matchDns) ||
+ (needEmail && !matchEmail) ||
+ (needDir && !matchDir)) {
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+#endif /* IGNORE_NAME_CONSTRAINTS */
+
+static int DecodeAltNames(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0;
+ int length = 0;
+
+ WOLFSSL_ENTER("DecodeAltNames");
+
+ if (GetSequence(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tBad Sequence");
+ return ASN_PARSE_E;
+ }
+
+ cert->weOwnAltNames = 1;
+
+ while (length > 0) {
+ byte b = input[idx++];
+
+ length--;
+
+ /* Save DNS Type names in the altNames list. */
+ /* Save Other Type names in the cert's OidMap */
+ if (b == (ASN_CONTEXT_SPECIFIC | ASN_DNS_TYPE)) {
+ DNS_entry* dnsEntry;
+ int strLen;
+ word32 lenStartIdx = idx;
+
+ if (GetLength(input, &idx, &strLen, sz) < 0) {
+ WOLFSSL_MSG("\tfail: str length");
+ return ASN_PARSE_E;
+ }
+ length -= (idx - lenStartIdx);
+
+ dnsEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
+ DYNAMIC_TYPE_ALTNAME);
+ if (dnsEntry == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ return MEMORY_E;
+ }
+
+ dnsEntry->type = ASN_DNS_TYPE;
+ dnsEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
+ DYNAMIC_TYPE_ALTNAME);
+ if (dnsEntry->name == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ XFREE(dnsEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
+ return MEMORY_E;
+ }
+ dnsEntry->len = strLen;
+ XMEMCPY(dnsEntry->name, &input[idx], strLen);
+ dnsEntry->name[strLen] = '\0';
+
+ dnsEntry->next = cert->altNames;
+ cert->altNames = dnsEntry;
+
+ length -= strLen;
+ idx += strLen;
+ }
+ #ifndef IGNORE_NAME_CONSTRAINTS
+ else if (b == (ASN_CONTEXT_SPECIFIC | ASN_RFC822_TYPE)) {
+ DNS_entry* emailEntry;
+ int strLen;
+ word32 lenStartIdx = idx;
+
+ if (GetLength(input, &idx, &strLen, sz) < 0) {
+ WOLFSSL_MSG("\tfail: str length");
+ return ASN_PARSE_E;
+ }
+ length -= (idx - lenStartIdx);
+
+ emailEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
+ DYNAMIC_TYPE_ALTNAME);
+ if (emailEntry == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ return MEMORY_E;
+ }
+
+ emailEntry->type = ASN_RFC822_TYPE;
+ emailEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
+ DYNAMIC_TYPE_ALTNAME);
+ if (emailEntry->name == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ XFREE(emailEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
+ return MEMORY_E;
+ }
+ emailEntry->len = strLen;
+ XMEMCPY(emailEntry->name, &input[idx], strLen);
+ emailEntry->name[strLen] = '\0';
+
+ emailEntry->next = cert->altEmailNames;
+ cert->altEmailNames = emailEntry;
+
+ length -= strLen;
+ idx += strLen;
+ }
+ else if (b == (ASN_CONTEXT_SPECIFIC | ASN_URI_TYPE)) {
+ DNS_entry* uriEntry;
+ int strLen;
+ word32 lenStartIdx = idx;
+
+ WOLFSSL_MSG("\tPutting URI into list but not using");
+ if (GetLength(input, &idx, &strLen, sz) < 0) {
+ WOLFSSL_MSG("\tfail: str length");
+ return ASN_PARSE_E;
+ }
+ length -= (idx - lenStartIdx);
+
+ /* check that strLen at index is not past input buffer */
+ if (strLen + (int)idx > sz) {
+ return BUFFER_E;
+ }
+
+ #ifndef WOLFSSL_NO_ASN_STRICT
+ /* Verify RFC 5280 Sec 4.2.1.6 rule:
+ "The name MUST NOT be a relative URI" */
+
+ {
+ int i;
+
+ /* skip past scheme (i.e http,ftp,...) finding first ':' char */
+ for (i = 0; i < strLen; i++) {
+ if (input[idx + i] == ':') {
+ break;
+ }
+ if (input[idx + i] == '/') {
+ i = strLen; /* error, found relative path since '/' was
+ * encountered before ':'. Returning error
+ * value in next if statement. */
+ }
+ }
+
+ /* test if no ':' char was found and test that the next two
+ * chars are // to match the pattern "://" */
+ if (i >= strLen - 2 || (input[idx + i + 1] != '/' ||
+ input[idx + i + 2] != '/')) {
+ WOLFSSL_MSG("\tAlt Name must be absolute URI");
+ return ASN_ALT_NAME_E;
+ }
+ }
+ #endif
+
+ uriEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
+ DYNAMIC_TYPE_ALTNAME);
+ if (uriEntry == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ return MEMORY_E;
+ }
+
+ uriEntry->type = ASN_URI_TYPE;
+ uriEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
+ DYNAMIC_TYPE_ALTNAME);
+ if (uriEntry->name == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ XFREE(uriEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
+ return MEMORY_E;
+ }
+ uriEntry->len = strLen;
+ XMEMCPY(uriEntry->name, &input[idx], strLen);
+ uriEntry->name[strLen] = '\0';
+
+ uriEntry->next = cert->altNames;
+ cert->altNames = uriEntry;
+
+ length -= strLen;
+ idx += strLen;
+ }
+#endif /* IGNORE_NAME_CONSTRAINTS */
+#ifdef WOLFSSL_SEP
+ else if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | ASN_OTHER_TYPE))
+ {
+ int strLen;
+ word32 lenStartIdx = idx;
+ word32 oid = 0;
+ int ret;
+
+ if (GetLength(input, &idx, &strLen, sz) < 0) {
+ WOLFSSL_MSG("\tfail: other name length");
+ return ASN_PARSE_E;
+ }
+ /* Consume the rest of this sequence. */
+ length -= (strLen + idx - lenStartIdx);
+
+ if (GetObjectId(input, &idx, &oid, oidCertAltNameType, sz) < 0) {
+ WOLFSSL_MSG("\tbad OID");
+ return ASN_PARSE_E;
+ }
+
+ if (oid != HW_NAME_OID) {
+ WOLFSSL_MSG("\tincorrect OID");
+ return ASN_PARSE_E;
+ }
+
+ if (input[idx++] != (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED)) {
+ WOLFSSL_MSG("\twrong type");
+ return ASN_PARSE_E;
+ }
+
+ if (GetLength(input, &idx, &strLen, sz) < 0) {
+ WOLFSSL_MSG("\tfail: str len");
+ return ASN_PARSE_E;
+ }
+
+ if (GetSequence(input, &idx, &strLen, sz) < 0) {
+ WOLFSSL_MSG("\tBad Sequence");
+ return ASN_PARSE_E;
+ }
+
+ ret = GetASNObjectId(input, &idx, &strLen, sz);
+ if (ret != 0) {
+ WOLFSSL_MSG("\tbad OID");
+ return ret;
+ }
+
+ cert->hwType = (byte*)XMALLOC(strLen, cert->heap,
+ DYNAMIC_TYPE_X509_EXT);
+ if (cert->hwType == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ return MEMORY_E;
+ }
+
+ XMEMCPY(cert->hwType, &input[idx], strLen);
+ cert->hwTypeSz = strLen;
+ idx += strLen;
+
+ ret = GetOctetString(input, &idx, &strLen, sz);
+ if (ret < 0)
+ return ret;
+
+ cert->hwSerialNum = (byte*)XMALLOC(strLen + 1, cert->heap,
+ DYNAMIC_TYPE_X509_EXT);
+ if (cert->hwSerialNum == NULL) {
+ WOLFSSL_MSG("\tOut of Memory");
+ return MEMORY_E;
+ }
+
+ XMEMCPY(cert->hwSerialNum, &input[idx], strLen);
+ cert->hwSerialNum[strLen] = '\0';
+ cert->hwSerialNumSz = strLen;
+ idx += strLen;
+ }
+ #endif /* WOLFSSL_SEP */
+ else {
+ int strLen;
+ word32 lenStartIdx = idx;
+
+ WOLFSSL_MSG("\tUnsupported name type, skipping");
+
+ if (GetLength(input, &idx, &strLen, sz) < 0) {
+ WOLFSSL_MSG("\tfail: unsupported name length");
+ return ASN_PARSE_E;
+ }
+ length -= (strLen + idx - lenStartIdx);
+ idx += strLen;
+ }
+ }
+ return 0;
+}
+
+static int DecodeBasicCaConstraint(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0;
+ int length = 0;
+ int ret;
+
+ WOLFSSL_ENTER("DecodeBasicCaConstraint");
+
+ if (GetSequence(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: bad SEQUENCE");
+ return ASN_PARSE_E;
+ }
+
+ if (length == 0)
+ return 0;
+
+ /* If the basic ca constraint is false, this extension may be named, but
+ * left empty. So, if the length is 0, just return. */
+
+ ret = GetBoolean(input, &idx, sz);
+ if (ret < 0) {
+ WOLFSSL_MSG("\tfail: constraint not valid BOOLEAN");
+ return ret;
+ }
+
+ cert->isCA = (byte)ret;
+
+ /* If there isn't any more data, return. */
+ if (idx >= (word32)sz)
+ return 0;
+
+ ret = GetInteger7Bit(input, &idx, sz);
+ if (ret < 0)
+ return ret;
+
+ cert->pathLength = (byte)ret;
+ cert->pathLengthSet = 1;
+
+ return 0;
+}
+
+
+#define CRLDP_FULL_NAME 0
+ /* From RFC3280 SS4.2.1.14, Distribution Point Name*/
+#define GENERALNAME_URI 6
+ /* From RFC3280 SS4.2.1.7, GeneralName */
+
+static int DecodeCrlDist(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0;
+ int length = 0;
+
+ WOLFSSL_ENTER("DecodeCrlDist");
+
+ /* Unwrap the list of Distribution Points*/
+ if (GetSequence(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ /* Unwrap a single Distribution Point */
+ if (GetSequence(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ /* The Distribution Point has three explicit optional members
+ * First check for a DistributionPointName
+ */
+ if (input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 0))
+ {
+ idx++;
+ if (GetLength(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (input[idx] ==
+ (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | CRLDP_FULL_NAME))
+ {
+ idx++;
+ if (GetLength(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (input[idx] == (ASN_CONTEXT_SPECIFIC | GENERALNAME_URI))
+ {
+ idx++;
+ if (GetLength(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ cert->extCrlInfoSz = length;
+ cert->extCrlInfo = input + idx;
+ idx += length;
+ }
+ else
+ /* This isn't a URI, skip it. */
+ idx += length;
+ }
+ else {
+ /* This isn't a FULLNAME, skip it. */
+ idx += length;
+ }
+ }
+
+ /* Check for reasonFlags */
+ if (idx < (word32)sz &&
+ input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1))
+ {
+ idx++;
+ if (GetLength(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+ idx += length;
+ }
+
+ /* Check for cRLIssuer */
+ if (idx < (word32)sz &&
+ input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 2))
+ {
+ idx++;
+ if (GetLength(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+ idx += length;
+ }
+
+ if (idx < (word32)sz)
+ {
+ WOLFSSL_MSG("\tThere are more CRL Distribution Point records, "
+ "but we only use the first one.");
+ }
+
+ return 0;
+}
+
+
+static int DecodeAuthInfo(byte* input, int sz, DecodedCert* cert)
+/*
+ * Read the first of the Authority Information Access records. If there are
+ * any issues, return without saving the record.
+ */
+{
+ word32 idx = 0;
+ int length = 0;
+ byte b;
+ word32 oid;
+
+ WOLFSSL_ENTER("DecodeAuthInfo");
+
+ /* Unwrap the list of AIAs */
+ if (GetSequence(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ while (idx < (word32)sz) {
+ /* Unwrap a single AIA */
+ if (GetSequence(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ oid = 0;
+ if (GetObjectId(input, &idx, &oid, oidCertAuthInfoType, sz) < 0)
+ return ASN_PARSE_E;
+
+
+ /* Only supporting URIs right now. */
+ b = input[idx++];
+ if (GetLength(input, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (b == (ASN_CONTEXT_SPECIFIC | GENERALNAME_URI) &&
+ oid == AIA_OCSP_OID)
+ {
+ cert->extAuthInfoSz = length;
+ cert->extAuthInfo = input + idx;
+ break;
+ }
+ idx += length;
+ }
+
+ return 0;
+}
+
+
+static int DecodeAuthKeyId(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0;
+ int length = 0, ret = 0;
+
+ WOLFSSL_ENTER("DecodeAuthKeyId");
+
+ if (GetSequence(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: should be a SEQUENCE\n");
+ return ASN_PARSE_E;
+ }
+
+ if (input[idx++] != (ASN_CONTEXT_SPECIFIC | 0)) {
+ WOLFSSL_MSG("\tinfo: OPTIONAL item 0, not available\n");
+ return 0;
+ }
+
+ if (GetLength(input, &idx, &length, sz) <= 0) {
+ WOLFSSL_MSG("\tfail: extension data length");
+ return ASN_PARSE_E;
+ }
+
+#if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extAuthKeyIdSrc = &input[idx];
+ cert->extAuthKeyIdSz = length;
+#endif /* OPENSSL_EXTRA */
+
+ if (length == KEYID_SIZE) {
+ XMEMCPY(cert->extAuthKeyId, input + idx, length);
+ }
+ else {
+ #ifdef NO_SHA
+ ret = wc_Sha256Hash(input + idx, length, cert->extAuthKeyId);
+ #else
+ ret = wc_ShaHash(input + idx, length, cert->extAuthKeyId);
+ #endif
+ }
+
+ return ret;
+}
+
+
+static int DecodeSubjKeyId(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0;
+ int length = 0, ret = 0;
+
+ WOLFSSL_ENTER("DecodeSubjKeyId");
+
+ if (sz <= 0)
+ return ASN_PARSE_E;
+
+ ret = GetOctetString(input, &idx, &length, sz);
+ if (ret < 0)
+ return ret;
+
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extSubjKeyIdSrc = &input[idx];
+ cert->extSubjKeyIdSz = length;
+ #endif /* OPENSSL_EXTRA */
+
+ if (length == SIGNER_DIGEST_SIZE) {
+ XMEMCPY(cert->extSubjKeyId, input + idx, length);
+ }
+ else {
+ #ifdef NO_SHA
+ ret = wc_Sha256Hash(input + idx, length, cert->extSubjKeyId);
+ #else
+ ret = wc_ShaHash(input + idx, length, cert->extSubjKeyId);
+ #endif
+ }
+
+ return ret;
+}
+
+
+static int DecodeKeyUsage(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0;
+ int length;
+ int ret;
+ WOLFSSL_ENTER("DecodeKeyUsage");
+
+ ret = CheckBitString(input, &idx, &length, sz, 0, NULL);
+ if (ret != 0)
+ return ret;
+
+ cert->extKeyUsage = (word16)(input[idx]);
+ if (length == 2)
+ cert->extKeyUsage |= (word16)(input[idx+1] << 8);
+
+ return 0;
+}
+
+
+static int DecodeExtKeyUsage(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0, oid;
+ int length;
+
+ WOLFSSL_ENTER("DecodeExtKeyUsage");
+
+ if (GetSequence(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: should be a SEQUENCE");
+ return ASN_PARSE_E;
+ }
+
+#if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extExtKeyUsageSrc = input + idx;
+ cert->extExtKeyUsageSz = length;
+#endif
+
+ while (idx < (word32)sz) {
+ if (GetObjectId(input, &idx, &oid, oidCertKeyUseType, sz) < 0)
+ return ASN_PARSE_E;
+
+ switch (oid) {
+ case EKU_ANY_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_ANY;
+ break;
+ case EKU_SERVER_AUTH_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_SERVER_AUTH;
+ break;
+ case EKU_CLIENT_AUTH_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_CLIENT_AUTH;
+ break;
+ case EKU_CODESIGNING_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_CODESIGN;
+ break;
+ case EKU_EMAILPROTECT_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_EMAILPROT;
+ break;
+ case EKU_TIMESTAMP_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_TIMESTAMP;
+ break;
+ case EKU_OCSP_SIGN_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_OCSP_SIGN;
+ break;
+ }
+
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extExtKeyUsageCount++;
+ #endif
+ }
+
+ return 0;
+}
+
+
+#ifndef IGNORE_NAME_CONSTRAINTS
+#define ASN_TYPE_MASK 0xF
+static int DecodeSubtree(byte* input, int sz, Base_entry** head, void* heap)
+{
+ word32 idx = 0;
+
+ (void)heap;
+
+ while (idx < (word32)sz) {
+ int seqLength, strLength;
+ word32 nameIdx;
+ byte b, bType;
+
+ if (GetSequence(input, &idx, &seqLength, sz) < 0) {
+ WOLFSSL_MSG("\tfail: should be a SEQUENCE");
+ return ASN_PARSE_E;
+ }
+ nameIdx = idx;
+ b = input[nameIdx++];
+
+ if (GetLength(input, &nameIdx, &strLength, sz) <= 0) {
+ WOLFSSL_MSG("\tinvalid length");
+ return ASN_PARSE_E;
+ }
+
+ /* Get type, LSB 4-bits */
+ bType = (b & ASN_TYPE_MASK);
+
+ if (bType == ASN_DNS_TYPE || bType == ASN_RFC822_TYPE ||
+ bType == ASN_DIR_TYPE) {
+ Base_entry* entry;
+
+ /* if constructed has leading sequence */
+ if (b & ASN_CONSTRUCTED) {
+ if (GetSequence(input, &nameIdx, &strLength, sz) < 0) {
+ WOLFSSL_MSG("\tfail: constructed be a SEQUENCE");
+ return ASN_PARSE_E;
+ }
+ }
+
+ entry = (Base_entry*)XMALLOC(sizeof(Base_entry), heap,
+ DYNAMIC_TYPE_ALTNAME);
+ if (entry == NULL) {
+ WOLFSSL_MSG("allocate error");
+ return MEMORY_E;
+ }
+
+ entry->name = (char*)XMALLOC(strLength, heap, DYNAMIC_TYPE_ALTNAME);
+ if (entry->name == NULL) {
+ WOLFSSL_MSG("allocate error");
+ XFREE(entry, heap, DYNAMIC_TYPE_ALTNAME);
+ return MEMORY_E;
+ }
+
+ XMEMCPY(entry->name, &input[nameIdx], strLength);
+ entry->nameSz = strLength;
+ entry->type = bType;
+
+ entry->next = *head;
+ *head = entry;
+ }
+
+ idx += seqLength;
+ }
+
+ return 0;
+}
+
+
+static int DecodeNameConstraints(byte* input, int sz, DecodedCert* cert)
+{
+ word32 idx = 0;
+ int length = 0;
+
+ WOLFSSL_ENTER("DecodeNameConstraints");
+
+ if (GetSequence(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: should be a SEQUENCE");
+ return ASN_PARSE_E;
+ }
+
+ while (idx < (word32)sz) {
+ byte b = input[idx++];
+ Base_entry** subtree = NULL;
+
+ if (GetLength(input, &idx, &length, sz) <= 0) {
+ WOLFSSL_MSG("\tinvalid length");
+ return ASN_PARSE_E;
+ }
+
+ if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 0))
+ subtree = &cert->permittedNames;
+ else if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1))
+ subtree = &cert->excludedNames;
+ else {
+ WOLFSSL_MSG("\tinvalid subtree");
+ return ASN_PARSE_E;
+ }
+
+ DecodeSubtree(input + idx, length, subtree, cert->heap);
+
+ idx += length;
+ }
+
+ return 0;
+}
+#endif /* IGNORE_NAME_CONSTRAINTS */
+
+#if (defined(WOLFSSL_CERT_EXT) && !defined(WOLFSSL_SEP)) || defined(OPENSSL_EXTRA)
+
+static int Word32ToString(char* d, word32 number)
+{
+ int i = 0;
+
+ if (d != NULL) {
+ word32 order = 1000000000;
+ word32 digit;
+
+ if (number == 0) {
+ d[i++] = '0';
+ }
+ else {
+ while (order) {
+ digit = number / order;
+ if (i > 0 || digit != 0) {
+ d[i++] = (char)digit + '0';
+ }
+ if (digit != 0)
+ number %= digit * order;
+ if (order > 1)
+ order /= 10;
+ else
+ order = 0;
+ }
+ }
+ d[i] = 0;
+ }
+
+ return i;
+}
+
+
+/* Decode ITU-T X.690 OID format to a string representation
+ * return string length */
+int DecodePolicyOID(char *out, word32 outSz, byte *in, word32 inSz)
+{
+ word32 val, idx = 0, nb_bytes;
+ size_t w_bytes = 0;
+
+ if (out == NULL || in == NULL || outSz < 4 || inSz < 2)
+ return BAD_FUNC_ARG;
+
+ /* first two byte must be interpreted as : 40 * int1 + int2 */
+ val = (word16)in[idx++];
+
+ w_bytes = Word32ToString(out, val / 40);
+ out[w_bytes++] = '.';
+ w_bytes += Word32ToString(out+w_bytes, val % 40);
+
+ while (idx < inSz) {
+ /* init value */
+ val = 0;
+ nb_bytes = 0;
+
+ /* check that output size is ok */
+ if (w_bytes > (outSz - 3))
+ return BUFFER_E;
+
+ /* first bit is used to set if value is coded on 1 or multiple bytes */
+ while ((in[idx+nb_bytes] & 0x80))
+ nb_bytes++;
+
+ if (!nb_bytes)
+ val = (word32)(in[idx++] & 0x7f);
+ else {
+ word32 base = 1, tmp = nb_bytes;
+
+ while (tmp != 0) {
+ val += (word32)(in[idx+tmp] & 0x7f) * base;
+ base *= 128;
+ tmp--;
+ }
+ val += (word32)(in[idx++] & 0x7f) * base;
+
+ idx += nb_bytes;
+ }
+
+ out[w_bytes++] = '.';
+ w_bytes += Word32ToString(out+w_bytes, val);
+ }
+
+ return (int)w_bytes;
+}
+#endif /* WOLFSSL_CERT_EXT && !WOLFSSL_SEP */
+
+#if defined(WOLFSSL_SEP) || defined(WOLFSSL_CERT_EXT)
+ /* Reference: https://tools.ietf.org/html/rfc5280#section-4.2.1.4 */
+ static int DecodeCertPolicy(byte* input, int sz, DecodedCert* cert)
+ {
+ word32 idx = 0;
+ word32 oldIdx;
+ int ret;
+ int total_length = 0, policy_length = 0, length = 0;
+ #if !defined(WOLFSSL_SEP) && defined(WOLFSSL_CERT_EXT) && \
+ !defined(WOLFSSL_DUP_CERTPOL)
+ int i;
+ #endif
+
+ WOLFSSL_ENTER("DecodeCertPolicy");
+
+ if (GetSequence(input, &idx, &total_length, sz) < 0) {
+ WOLFSSL_MSG("\tGet CertPolicy total seq failed");
+ return ASN_PARSE_E;
+ }
+
+ /* Validate total length */
+ if (total_length > (sz - (int)idx)) {
+ WOLFSSL_MSG("\tCertPolicy length mismatch");
+ return ASN_PARSE_E;
+ }
+
+ /* Unwrap certificatePolicies */
+ do {
+ if (GetSequence(input, &idx, &policy_length, sz) < 0) {
+ WOLFSSL_MSG("\tGet CertPolicy seq failed");
+ return ASN_PARSE_E;
+ }
+
+ oldIdx = idx;
+ ret = GetASNObjectId(input, &idx, &length, sz);
+ if (ret != 0)
+ return ret;
+ policy_length -= idx - oldIdx;
+
+ if (length > 0) {
+ /* Verify length won't overrun buffer */
+ if (length > (sz - (int)idx)) {
+ WOLFSSL_MSG("\tCertPolicy length exceeds input buffer");
+ return ASN_PARSE_E;
+ }
+
+ #if defined(WOLFSSL_SEP)
+ cert->deviceType = (byte*)XMALLOC(length, cert->heap,
+ DYNAMIC_TYPE_X509_EXT);
+ if (cert->deviceType == NULL) {
+ WOLFSSL_MSG("\tCouldn't alloc memory for deviceType");
+ return MEMORY_E;
+ }
+ cert->deviceTypeSz = length;
+ XMEMCPY(cert->deviceType, input + idx, length);
+ break;
+ #elif defined(WOLFSSL_CERT_EXT)
+ /* decode cert policy */
+ if (DecodePolicyOID(cert->extCertPolicies[cert->extCertPoliciesNb], MAX_CERTPOL_SZ,
+ input + idx, length) <= 0) {
+ WOLFSSL_MSG("\tCouldn't decode CertPolicy");
+ return ASN_PARSE_E;
+ }
+ #ifndef WOLFSSL_DUP_CERTPOL
+ /* From RFC 5280 section 4.2.1.3 "A certificate policy OID MUST
+ * NOT appear more than once in a certificate policies
+ * extension". This is a sanity check for duplicates.
+ * extCertPolicies should only have OID values, additional
+ * qualifiers need to be stored in a seperate array. */
+ for (i = 0; i < cert->extCertPoliciesNb; i++) {
+ if (XMEMCMP(cert->extCertPolicies[i],
+ cert->extCertPolicies[cert->extCertPoliciesNb],
+ MAX_CERTPOL_SZ) == 0) {
+ WOLFSSL_MSG("Duplicate policy OIDs not allowed");
+ WOLFSSL_MSG("Use WOLFSSL_DUP_CERTPOL if wanted");
+ return CERTPOLICIES_E;
+ }
+ }
+ #endif /* !WOLFSSL_DUP_CERTPOL */
+ cert->extCertPoliciesNb++;
+ #else
+ WOLFSSL_LEAVE("DecodeCertPolicy : unsupported mode", 0);
+ return 0;
+ #endif
+ }
+ idx += policy_length;
+ } while((int)idx < total_length
+ #if defined(WOLFSSL_CERT_EXT)
+ && cert->extCertPoliciesNb < MAX_CERTPOL_NB
+ #endif
+ );
+
+ WOLFSSL_LEAVE("DecodeCertPolicy", 0);
+ return 0;
+ }
+#endif /* WOLFSSL_SEP */
+
+/* Macro to check if bit is set, if not sets and return success.
+ Otherwise returns failure */
+/* Macro required here because bit-field operation */
+#ifndef WOLFSSL_NO_ASN_STRICT
+ #define VERIFY_AND_SET_OID(bit) \
+ if (bit == 0) \
+ bit = 1; \
+ else \
+ return ASN_OBJECT_ID_E;
+#else
+ /* With no strict defined, the verify is skipped */
+#define VERIFY_AND_SET_OID(bit) bit = 1;
+#endif
+
+static int DecodeCertExtensions(DecodedCert* cert)
+/*
+ * Processing the Certificate Extensions. This does not modify the current
+ * index. It is works starting with the recorded extensions pointer.
+ */
+{
+ int ret = 0;
+ word32 idx = 0;
+ int sz = cert->extensionsSz;
+ byte* input = cert->extensions;
+ int length;
+ word32 oid;
+ byte critical = 0;
+ byte criticalFail = 0;
+
+ WOLFSSL_ENTER("DecodeCertExtensions");
+
+ if (input == NULL || sz == 0)
+ return BAD_FUNC_ARG;
+
+ if (input[idx++] != ASN_EXTENSIONS) {
+ WOLFSSL_MSG("\tfail: should be an EXTENSIONS");
+ return ASN_PARSE_E;
+ }
+
+ if (GetLength(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: invalid length");
+ return ASN_PARSE_E;
+ }
+
+ if (GetSequence(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: should be a SEQUENCE (1)");
+ return ASN_PARSE_E;
+ }
+
+ while (idx < (word32)sz) {
+ if (GetSequence(input, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: should be a SEQUENCE");
+ return ASN_PARSE_E;
+ }
+
+ oid = 0;
+ if ((ret = GetObjectId(input, &idx, &oid, oidCertExtType, sz)) < 0) {
+ WOLFSSL_MSG("\tfail: OBJECT ID");
+ return ret;
+ }
+
+ /* check for critical flag */
+ critical = 0;
+ if (input[idx] == ASN_BOOLEAN) {
+ ret = GetBoolean(input, &idx, sz);
+ if (ret < 0) {
+ WOLFSSL_MSG("\tfail: critical boolean");
+ return ret;
+ }
+
+ critical = (byte)ret;
+ }
+
+ /* process the extension based on the OID */
+ ret = GetOctetString(input, &idx, &length, sz);
+ if (ret < 0) {
+ WOLFSSL_MSG("\tfail: bad OCTET STRING");
+ return ret;
+ }
+
+ switch (oid) {
+ case BASIC_CA_OID:
+ VERIFY_AND_SET_OID(cert->extBasicConstSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extBasicConstCrit = critical;
+ #endif
+ if (DecodeBasicCaConstraint(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case CRL_DIST_OID:
+ VERIFY_AND_SET_OID(cert->extCRLdistSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extCRLdistCrit = critical;
+ #endif
+ if (DecodeCrlDist(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case AUTH_INFO_OID:
+ VERIFY_AND_SET_OID(cert->extAuthInfoSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extAuthInfoCrit = critical;
+ #endif
+ if (DecodeAuthInfo(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case ALT_NAMES_OID:
+ VERIFY_AND_SET_OID(cert->extSubjAltNameSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extSubjAltNameCrit = critical;
+ #endif
+ ret = DecodeAltNames(&input[idx], length, cert);
+ if (ret < 0)
+ return ret;
+ break;
+
+ case AUTH_KEY_OID:
+ VERIFY_AND_SET_OID(cert->extAuthKeyIdSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extAuthKeyIdCrit = critical;
+ #endif
+ #ifndef WOLFSSL_ALLOW_CRIT_SKID
+ /* This check is added due to RFC 5280 section 4.2.1.1
+ * stating that conforming CA's must mark this extension
+ * as non-critical. When parsing extensions check that
+ * certificate was made in compliance with this. */
+ if (critical) {
+ WOLFSSL_MSG("Critical Auth Key ID is not allowed");
+ WOLFSSL_MSG("Use macro WOLFSSL_ALLOW_CRIT_SKID if wanted");
+ return ASN_CRIT_EXT_E;
+ }
+ #endif
+ if (DecodeAuthKeyId(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case SUBJ_KEY_OID:
+ VERIFY_AND_SET_OID(cert->extSubjKeyIdSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extSubjKeyIdCrit = critical;
+ #endif
+ #ifndef WOLFSSL_ALLOW_CRIT_SKID
+ /* This check is added due to RFC 5280 section 4.2.1.2
+ * stating that conforming CA's must mark this extension
+ * as non-critical. When parsing extensions check that
+ * certificate was made in compliance with this. */
+ if (critical) {
+ WOLFSSL_MSG("Critical Subject Key ID is not allowed");
+ WOLFSSL_MSG("Use macro WOLFSSL_ALLOW_CRIT_SKID if wanted");
+ return ASN_CRIT_EXT_E;
+ }
+ #endif
+
+ if (DecodeSubjKeyId(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case CERT_POLICY_OID:
+ #ifdef WOLFSSL_SEP
+ VERIFY_AND_SET_OID(cert->extCertPolicySet);
+ #if defined(OPENSSL_EXTRA) || \
+ defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extCertPolicyCrit = critical;
+ #endif
+ #endif
+ #if defined(WOLFSSL_SEP) || defined(WOLFSSL_CERT_EXT)
+ if (DecodeCertPolicy(&input[idx], length, cert) < 0) {
+ return ASN_PARSE_E;
+ }
+ #else
+ WOLFSSL_MSG("Certificate Policy extension not supported yet.");
+ #endif
+ break;
+
+ case KEY_USAGE_OID:
+ VERIFY_AND_SET_OID(cert->extKeyUsageSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extKeyUsageCrit = critical;
+ #endif
+ if (DecodeKeyUsage(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case EXT_KEY_USAGE_OID:
+ VERIFY_AND_SET_OID(cert->extExtKeyUsageSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extExtKeyUsageCrit = critical;
+ #endif
+ if (DecodeExtKeyUsage(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ #ifndef IGNORE_NAME_CONSTRAINTS
+ case NAME_CONS_OID:
+ #ifndef WOLFSSL_NO_ASN_STRICT
+ /* Verify RFC 5280 Sec 4.2.1.10 rule:
+ "The name constraints extension,
+ which MUST be used only in a CA certificate" */
+ if (!cert->isCA) {
+ WOLFSSL_MSG("Name constraints allowed only for CA certs");
+ return ASN_NAME_INVALID_E;
+ }
+ #endif
+ VERIFY_AND_SET_OID(cert->extNameConstraintSet);
+ #if defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL)
+ cert->extNameConstraintCrit = critical;
+ #endif
+ if (DecodeNameConstraints(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+ #endif /* IGNORE_NAME_CONSTRAINTS */
+
+ case INHIBIT_ANY_OID:
+ VERIFY_AND_SET_OID(cert->inhibitAnyOidSet);
+ WOLFSSL_MSG("Inhibit anyPolicy extension not supported yet.");
+ break;
+
+ default:
+ /* While it is a failure to not support critical extensions,
+ * still parse the certificate ignoring the unsupported
+ * extension to allow caller to accept it with the verify
+ * callback. */
+ if (critical)
+ criticalFail = 1;
+ break;
+ }
+ idx += length;
+ }
+
+ return criticalFail ? ASN_CRIT_EXT_E : 0;
+}
+
+int ParseCert(DecodedCert* cert, int type, int verify, void* cm)
+{
+ int ret;
+ char* ptr;
+
+ ret = ParseCertRelative(cert, type, verify, cm);
+ if (ret < 0)
+ return ret;
+
+ if (cert->subjectCNLen > 0) {
+ ptr = (char*) XMALLOC(cert->subjectCNLen + 1, cert->heap,
+ DYNAMIC_TYPE_SUBJECT_CN);
+ if (ptr == NULL)
+ return MEMORY_E;
+ XMEMCPY(ptr, cert->subjectCN, cert->subjectCNLen);
+ ptr[cert->subjectCNLen] = '\0';
+ cert->subjectCN = ptr;
+ cert->subjectCNStored = 1;
+ }
+
+ if (cert->keyOID == RSAk &&
+ cert->publicKey != NULL && cert->pubKeySize > 0) {
+ ptr = (char*) XMALLOC(cert->pubKeySize, cert->heap,
+ DYNAMIC_TYPE_PUBLIC_KEY);
+ if (ptr == NULL)
+ return MEMORY_E;
+ XMEMCPY(ptr, cert->publicKey, cert->pubKeySize);
+ cert->publicKey = (byte *)ptr;
+ cert->pubKeyStored = 1;
+ }
+
+ return ret;
+}
+
+/* from SSL proper, for locking can't do find here anymore */
+#ifdef __cplusplus
+ extern "C" {
+#endif
+ WOLFSSL_LOCAL Signer* GetCA(void* signers, byte* hash);
+ #ifndef NO_SKID
+ WOLFSSL_LOCAL Signer* GetCAByName(void* signers, byte* hash);
+ #endif
+#ifdef __cplusplus
+ }
+#endif
+
+
+#if defined(WOLFCRYPT_ONLY) || defined(NO_CERTS)
+
+/* dummy functions, not using wolfSSL so don't need actual ones */
+Signer* GetCA(void* signers, byte* hash)
+{
+ (void)hash;
+
+ return (Signer*)signers;
+}
+
+#ifndef NO_SKID
+Signer* GetCAByName(void* signers, byte* hash)
+{
+ (void)hash;
+
+ return (Signer*)signers;
+}
+#endif /* NO_SKID */
+
+#endif /* WOLFCRYPT_ONLY || NO_CERTS */
+
+#if (defined(WOLFSSL_ALT_CERT_CHAINS) || \
+ defined(WOLFSSL_NO_TRUSTED_CERTS_VERIFY)) && !defined(NO_SKID)
+static Signer* GetCABySubjectAndPubKey(DecodedCert* cert, void* cm)
+{
+ Signer* ca = NULL;
+ if (cert->extSubjKeyIdSet)
+ ca = GetCA(cm, cert->extSubjKeyId);
+ if (ca == NULL)
+ ca = GetCAByName(cm, cert->subjectHash);
+ if (ca) {
+ if ((ca->pubKeySize == cert->pubKeySize) &&
+ (XMEMCMP(ca->publicKey, cert->publicKey, ca->pubKeySize) == 0)) {
+ return ca;
+ }
+ }
+ return NULL;
+}
+#endif
+
+int ParseCertRelative(DecodedCert* cert, int type, int verify, void* cm)
+{
+ int ret = 0;
+ int badDate = 0;
+ int criticalExt = 0;
+ word32 confirmOID;
+ int selfSigned = 0;
+
+ if (cert == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ if (cert->sigCtx.state == SIG_STATE_BEGIN) {
+ if ((ret = DecodeToKey(cert, verify)) < 0) {
+ if (ret == ASN_BEFORE_DATE_E || ret == ASN_AFTER_DATE_E)
+ badDate = ret;
+ else
+ return ret;
+ }
+
+ WOLFSSL_MSG("Parsed Past Key");
+
+ if (cert->srcIdx < cert->sigIndex) {
+ #ifndef ALLOW_V1_EXTENSIONS
+ if (cert->version < 2) {
+ WOLFSSL_MSG("\tv1 and v2 certs not allowed extensions");
+ return ASN_VERSION_E;
+ }
+ #endif
+
+ /* save extensions */
+ cert->extensions = &cert->source[cert->srcIdx];
+ cert->extensionsSz = cert->sigIndex - cert->srcIdx;
+ cert->extensionsIdx = cert->srcIdx; /* for potential later use */
+
+ if ((ret = DecodeCertExtensions(cert)) < 0) {
+ if (ret == ASN_CRIT_EXT_E)
+ criticalExt = ret;
+ else
+ return ret;
+ }
+
+ /* advance past extensions */
+ cert->srcIdx = cert->sigIndex;
+ }
+
+ if ((ret = GetAlgoId(cert->source, &cert->srcIdx, &confirmOID,
+ oidSigType, cert->maxIdx)) < 0)
+ return ret;
+
+ if ((ret = GetSignature(cert)) < 0)
+ return ret;
+
+ if (confirmOID != cert->signatureOID)
+ return ASN_SIG_OID_E;
+
+ #ifndef NO_SKID
+ if (cert->extSubjKeyIdSet == 0 && cert->publicKey != NULL &&
+ cert->pubKeySize > 0) {
+ #ifdef NO_SHA
+ ret = wc_Sha256Hash(cert->publicKey, cert->pubKeySize,
+ cert->extSubjKeyId);
+ #else
+ ret = wc_ShaHash(cert->publicKey, cert->pubKeySize,
+ cert->extSubjKeyId);
+ #endif /* NO_SHA */
+ if (ret != 0)
+ return ret;
+ }
+ #endif /* !NO_SKID */
+
+ if (verify != NO_VERIFY && type != CA_TYPE && type != TRUSTED_PEER_TYPE) {
+ cert->ca = NULL;
+ #ifndef NO_SKID
+ if (cert->extAuthKeyIdSet)
+ cert->ca = GetCA(cm, cert->extAuthKeyId);
+ if (cert->ca == NULL)
+ cert->ca = GetCAByName(cm, cert->issuerHash);
+
+ /* OCSP Only: alt lookup using subject and pub key w/o sig check */
+ #ifdef WOLFSSL_NO_TRUSTED_CERTS_VERIFY
+ if (cert->ca == NULL && verify == VERIFY_OCSP) {
+ cert->ca = GetCABySubjectAndPubKey(cert, cm);
+ if (cert->ca) {
+ ret = 0; /* success */
+ goto exit_pcr;
+ }
+ }
+ #endif /* WOLFSSL_NO_TRUSTED_CERTS_VERIFY */
+
+ /* alt lookup using subject and public key */
+ #ifdef WOLFSSL_ALT_CERT_CHAINS
+ if (cert->ca == NULL)
+ cert->ca = GetCABySubjectAndPubKey(cert, cm);
+ #endif
+ #else
+ cert->ca = GetCA(cm, cert->issuerHash);
+ if (XMEMCMP(cert->issuerHash, cert->subjectHash, KEYID_SIZE) == 0)
+ selfSigned = 1;
+ #endif /* !NO_SKID */
+
+ WOLFSSL_MSG("About to verify certificate signature");
+ if (cert->ca) {
+ if (cert->isCA && cert->ca->pathLengthSet) {
+ if (selfSigned) {
+ if (cert->ca->pathLength != 0) {
+ WOLFSSL_MSG("Root CA with path length > 0");
+ return ASN_PATHLEN_INV_E;
+ }
+ }
+ else {
+ if (cert->ca->pathLength == 0) {
+ WOLFSSL_MSG("CA with path length 0 signing a CA");
+ return ASN_PATHLEN_INV_E;
+ }
+ else if (cert->pathLength >= cert->ca->pathLength) {
+
+ WOLFSSL_MSG("CA signing CA with longer path length");
+ return ASN_PATHLEN_INV_E;
+ }
+ }
+ }
+
+ #ifdef HAVE_OCSP
+ /* Need the CA's public key hash for OCSP */
+ #ifdef NO_SHA
+ ret = wc_Sha256Hash(cert->ca->publicKey, cert->ca->pubKeySize,
+ cert->issuerKeyHash);
+ #else
+ ret = wc_ShaHash(cert->ca->publicKey, cert->ca->pubKeySize,
+ cert->issuerKeyHash);
+ #endif /* NO_SHA */
+ if (ret != 0)
+ return ret;
+ #endif /* HAVE_OCSP */
+ }
+ }
+ }
+
+ if (verify != NO_VERIFY && type != CA_TYPE && type != TRUSTED_PEER_TYPE) {
+ if (cert->ca) {
+ if (verify == VERIFY || verify == VERIFY_OCSP) {
+ /* try to confirm/verify signature */
+ if ((ret = ConfirmSignature(&cert->sigCtx,
+ cert->source + cert->certBegin,
+ cert->sigIndex - cert->certBegin,
+ cert->ca->publicKey, cert->ca->pubKeySize,
+ cert->ca->keyOID, cert->signature,
+ cert->sigLength, cert->signatureOID)) != 0) {
+ if (ret != WC_PENDING_E) {
+ WOLFSSL_MSG("Confirm signature failed");
+ }
+ return ret;
+ }
+ #ifndef IGNORE_NAME_CONSTRAINTS
+ /* check that this cert's name is permitted by the signer's
+ * name constraints */
+ if (!ConfirmNameConstraints(cert->ca, cert)) {
+ WOLFSSL_MSG("Confirm name constraint failed");
+ return ASN_NAME_INVALID_E;
+ }
+ #endif /* IGNORE_NAME_CONSTRAINTS */
+ }
+ }
+ else {
+ /* no signer */
+ WOLFSSL_MSG("No CA signer to verify with");
+ return ASN_NO_SIGNER_E;
+ }
+ }
+
+#if defined(WOLFSSL_NO_TRUSTED_CERTS_VERIFY) && !defined(NO_SKID)
+exit_pcr:
+#endif
+
+ if (badDate != 0)
+ return badDate;
+
+ if (criticalExt != 0)
+ return criticalExt;
+
+ return ret;
+}
+
+/* Create and init an new signer */
+Signer* MakeSigner(void* heap)
+{
+ Signer* signer = (Signer*) XMALLOC(sizeof(Signer), heap,
+ DYNAMIC_TYPE_SIGNER);
+ if (signer) {
+ signer->pubKeySize = 0;
+ signer->keyOID = 0;
+ signer->publicKey = NULL;
+ signer->nameLen = 0;
+ signer->name = NULL;
+ #ifndef IGNORE_NAME_CONSTRAINTS
+ signer->permittedNames = NULL;
+ signer->excludedNames = NULL;
+ #endif /* IGNORE_NAME_CONSTRAINTS */
+ signer->pathLengthSet = 0;
+ signer->pathLength = 0;
+ #ifdef WOLFSSL_SIGNER_DER_CERT
+ signer->derCert = NULL;
+ #endif
+ signer->next = NULL;
+ }
+ (void)heap;
+
+ return signer;
+}
+
+
+/* Free an individual signer */
+void FreeSigner(Signer* signer, void* heap)
+{
+ XFREE(signer->name, heap, DYNAMIC_TYPE_SUBJECT_CN);
+ XFREE(signer->publicKey, heap, DYNAMIC_TYPE_PUBLIC_KEY);
+#ifndef IGNORE_NAME_CONSTRAINTS
+ if (signer->permittedNames)
+ FreeNameSubtrees(signer->permittedNames, heap);
+ if (signer->excludedNames)
+ FreeNameSubtrees(signer->excludedNames, heap);
+#endif
+#ifdef WOLFSSL_SIGNER_DER_CERT
+ FreeDer(&signer->derCert);
+#endif
+ XFREE(signer, heap, DYNAMIC_TYPE_SIGNER);
+
+ (void)heap;
+}
+
+
+/* Free the whole singer table with number of rows */
+void FreeSignerTable(Signer** table, int rows, void* heap)
+{
+ int i;
+
+ for (i = 0; i < rows; i++) {
+ Signer* signer = table[i];
+ while (signer) {
+ Signer* next = signer->next;
+ FreeSigner(signer, heap);
+ signer = next;
+ }
+ table[i] = NULL;
+ }
+}
+
+#ifdef WOLFSSL_TRUST_PEER_CERT
+/* Free an individual trusted peer cert */
+void FreeTrustedPeer(TrustedPeerCert* tp, void* heap)
+{
+ if (tp == NULL) {
+ return;
+ }
+
+ if (tp->name) {
+ XFREE(tp->name, heap, DYNAMIC_TYPE_SUBJECT_CN);
+ }
+
+ if (tp->sig) {
+ XFREE(tp->sig, heap, DYNAMIC_TYPE_SIGNATURE);
+ }
+#ifndef IGNORE_NAME_CONSTRAINTS
+ if (tp->permittedNames)
+ FreeNameSubtrees(tp->permittedNames, heap);
+ if (tp->excludedNames)
+ FreeNameSubtrees(tp->excludedNames, heap);
+#endif
+ XFREE(tp, heap, DYNAMIC_TYPE_CERT);
+
+ (void)heap;
+}
+
+/* Free the whole Trusted Peer linked list */
+void FreeTrustedPeerTable(TrustedPeerCert** table, int rows, void* heap)
+{
+ int i;
+
+ for (i = 0; i < rows; i++) {
+ TrustedPeerCert* tp = table[i];
+ while (tp) {
+ TrustedPeerCert* next = tp->next;
+ FreeTrustedPeer(tp, heap);
+ tp = next;
+ }
+ table[i] = NULL;
+ }
+}
+#endif /* WOLFSSL_TRUST_PEER_CERT */
+
+WOLFSSL_LOCAL int SetMyVersion(word32 version, byte* output, int header)
+{
+ int i = 0;
+
+ if (output == NULL)
+ return BAD_FUNC_ARG;
+
+ if (header) {
+ output[i++] = ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED;
+ output[i++] = 3;
+ }
+ output[i++] = ASN_INTEGER;
+ output[i++] = 0x01;
+ output[i++] = (byte)version;
+
+ return i;
+}
+
+
+WOLFSSL_LOCAL int SetSerialNumber(const byte* sn, word32 snSz, byte* output,
+ int maxSnSz)
+{
+ int i = 0;
+ int snSzInt = (int)snSz;
+
+ if (sn == NULL || output == NULL || snSzInt < 0)
+ return BAD_FUNC_ARG;
+
+ /* remove leading zeros */
+ while (snSzInt > 0 && sn[0] == 0) {
+ snSzInt--;
+ sn++;
+ }
+
+ /* truncate if input is too long */
+ if (snSzInt > maxSnSz)
+ snSzInt = maxSnSz;
+
+ /* encode ASN Integer, with length and value */
+ output[i++] = ASN_INTEGER;
+
+ /* handle MSB, to make sure value is positive */
+ if (sn[0] & 0x80) {
+ /* make room for zero pad */
+ if (snSzInt > maxSnSz-1)
+ snSzInt = maxSnSz-1;
+
+ /* add zero pad */
+ i += SetLength(snSzInt+1, &output[i]);
+ output[i++] = 0x00;
+ XMEMCPY(&output[i], sn, snSzInt);
+ }
+ else {
+ i += SetLength(snSzInt, &output[i]);
+ XMEMCPY(&output[i], sn, snSzInt);
+ }
+
+ /* compute final length */
+ i += snSzInt;
+
+ return i;
+}
+
+WOLFSSL_LOCAL int GetSerialNumber(const byte* input, word32* inOutIdx,
+ byte* serial, int* serialSz, word32 maxIdx)
+{
+ int result = 0;
+ int ret;
+
+ WOLFSSL_ENTER("GetSerialNumber");
+
+ if (serial == NULL || input == NULL || serialSz == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ /* First byte is ASN type */
+ if ((*inOutIdx+1) > maxIdx) {
+ WOLFSSL_MSG("Bad idx first");
+ return BUFFER_E;
+ }
+
+ ret = GetASNInt(input, inOutIdx, serialSz, maxIdx);
+ if (ret != 0)
+ return ret;
+
+ if (*serialSz > EXTERNAL_SERIAL_SIZE) {
+ WOLFSSL_MSG("Serial size bad");
+ return ASN_PARSE_E;
+ }
+
+ /* return serial */
+ XMEMCPY(serial, &input[*inOutIdx], *serialSz);
+ *inOutIdx += *serialSz;
+
+ return result;
+}
+
+
+int AllocDer(DerBuffer** pDer, word32 length, int type, void* heap)
+{
+ int ret = BAD_FUNC_ARG;
+ if (pDer) {
+ int dynType = 0;
+ DerBuffer* der;
+
+ /* Determine dynamic type */
+ switch (type) {
+ case CA_TYPE: dynType = DYNAMIC_TYPE_CA; break;
+ case CERT_TYPE: dynType = DYNAMIC_TYPE_CERT; break;
+ case CRL_TYPE: dynType = DYNAMIC_TYPE_CRL; break;
+ case DSA_TYPE: dynType = DYNAMIC_TYPE_DSA; break;
+ case ECC_TYPE: dynType = DYNAMIC_TYPE_ECC; break;
+ case RSA_TYPE: dynType = DYNAMIC_TYPE_RSA; break;
+ default: dynType = DYNAMIC_TYPE_KEY; break;
+ }
+
+ /* Setup new buffer */
+ *pDer = (DerBuffer*)XMALLOC(sizeof(DerBuffer) + length, heap, dynType);
+ if (*pDer == NULL) {
+ return MEMORY_E;
+ }
+ XMEMSET(*pDer, 0, sizeof(DerBuffer) + length);
+
+ der = *pDer;
+ der->type = type;
+ der->dynType = dynType; /* Cache this for FreeDer */
+ der->heap = heap;
+ der->buffer = (byte*)der + sizeof(DerBuffer);
+ der->length = length;
+ ret = 0; /* Success */
+ }
+ return ret;
+}
+
+void FreeDer(DerBuffer** pDer)
+{
+ if (pDer && *pDer)
+ {
+ DerBuffer* der = (DerBuffer*)*pDer;
+
+ /* ForceZero private keys */
+ if (der->type == PRIVATEKEY_TYPE) {
+ ForceZero(der->buffer, der->length);
+ }
+ der->buffer = NULL;
+ der->length = 0;
+ XFREE(der, der->heap, der->dynType);
+
+ *pDer = NULL;
+ }
+}
+
+
+#if defined(WOLFSSL_PEM_TO_DER) || defined(WOLFSSL_DER_TO_PEM)
+
+/* Max X509 header length indicates the max length + 2 ('\n', '\0') */
+#define MAX_X509_HEADER_SZ (37 + 2)
+
+const char* const BEGIN_CERT = "-----BEGIN CERTIFICATE-----";
+const char* const END_CERT = "-----END CERTIFICATE-----";
+#ifdef WOLFSSL_CERT_REQ
+ const char* const BEGIN_CERT_REQ = "-----BEGIN CERTIFICATE REQUEST-----";
+ const char* const END_CERT_REQ = "-----END CERTIFICATE REQUEST-----";
+#endif
+#ifndef NO_DH
+ const char* const BEGIN_DH_PARAM = "-----BEGIN DH PARAMETERS-----";
+ const char* const END_DH_PARAM = "-----END DH PARAMETERS-----";
+#endif
+#ifndef NO_DSA
+ const char* const BEGIN_DSA_PARAM = "-----BEGIN DSA PARAMETERS-----";
+ const char* const END_DSA_PARAM = "-----END DSA PARAMETERS-----";
+#endif
+const char* const BEGIN_X509_CRL = "-----BEGIN X509 CRL-----";
+const char* const END_X509_CRL = "-----END X509 CRL-----";
+const char* const BEGIN_RSA_PRIV = "-----BEGIN RSA PRIVATE KEY-----";
+const char* const END_RSA_PRIV = "-----END RSA PRIVATE KEY-----";
+const char* const BEGIN_PRIV_KEY = "-----BEGIN PRIVATE KEY-----";
+const char* const END_PRIV_KEY = "-----END PRIVATE KEY-----";
+const char* const BEGIN_ENC_PRIV_KEY = "-----BEGIN ENCRYPTED PRIVATE KEY-----";
+const char* const END_ENC_PRIV_KEY = "-----END ENCRYPTED PRIVATE KEY-----";
+#ifdef HAVE_ECC
+ const char* const BEGIN_EC_PRIV = "-----BEGIN EC PRIVATE KEY-----";
+ const char* const END_EC_PRIV = "-----END EC PRIVATE KEY-----";
+#endif
+#if defined(HAVE_ECC) || defined(HAVE_ED25519) || !defined(NO_DSA)
+ const char* const BEGIN_DSA_PRIV = "-----BEGIN DSA PRIVATE KEY-----";
+ const char* const END_DSA_PRIV = "-----END DSA PRIVATE KEY-----";
+#endif
+const char* const BEGIN_PUB_KEY = "-----BEGIN PUBLIC KEY-----";
+const char* const END_PUB_KEY = "-----END PUBLIC KEY-----";
+#ifdef HAVE_ED25519
+ const char* const BEGIN_EDDSA_PRIV = "-----BEGIN EDDSA PRIVATE KEY-----";
+ const char* const END_EDDSA_PRIV = "-----END EDDSA PRIVATE KEY-----";
+#endif
+#ifdef HAVE_CRL
+ const char *const BEGIN_CRL = "-----BEGIN X509 CRL-----";
+ const char* const END_CRL = "-----END X509 CRL-----";
+#endif
+
+
+
+int wc_PemGetHeaderFooter(int type, const char** header, const char** footer)
+{
+ int ret = BAD_FUNC_ARG;
+
+ switch (type) {
+ case CA_TYPE: /* same as below */
+ case TRUSTED_PEER_TYPE:
+ case CERT_TYPE:
+ if (header) *header = BEGIN_CERT;
+ if (footer) *footer = END_CERT;
+ ret = 0;
+ break;
+
+ case CRL_TYPE:
+ if (header) *header = BEGIN_X509_CRL;
+ if (footer) *footer = END_X509_CRL;
+ ret = 0;
+ break;
+ #ifndef NO_DH
+ case DH_PARAM_TYPE:
+ if (header) *header = BEGIN_DH_PARAM;
+ if (footer) *footer = END_DH_PARAM;
+ ret = 0;
+ break;
+ #endif
+ #ifndef NO_DSA
+ case DSA_PARAM_TYPE:
+ if (header) *header = BEGIN_DSA_PARAM;
+ if (footer) *footer = END_DSA_PARAM;
+ ret = 0;
+ break;
+ #endif
+ #ifdef WOLFSSL_CERT_REQ
+ case CERTREQ_TYPE:
+ if (header) *header = BEGIN_CERT_REQ;
+ if (footer) *footer = END_CERT_REQ;
+ ret = 0;
+ break;
+ #endif
+ #ifndef NO_DSA
+ case DSA_TYPE:
+ case DSA_PRIVATEKEY_TYPE:
+ if (header) *header = BEGIN_DSA_PRIV;
+ if (footer) *footer = END_DSA_PRIV;
+ ret = 0;
+ break;
+ #endif
+ #ifdef HAVE_ECC
+ case ECC_TYPE:
+ case ECC_PRIVATEKEY_TYPE:
+ if (header) *header = BEGIN_EC_PRIV;
+ if (footer) *footer = END_EC_PRIV;
+ ret = 0;
+ break;
+ #endif
+ case RSA_TYPE:
+ case PRIVATEKEY_TYPE:
+ if (header) *header = BEGIN_RSA_PRIV;
+ if (footer) *footer = END_RSA_PRIV;
+ ret = 0;
+ break;
+ #ifdef HAVE_ED25519
+ case ED25519_TYPE:
+ case EDDSA_PRIVATEKEY_TYPE:
+ if (header) *header = BEGIN_EDDSA_PRIV;
+ if (footer) *footer = END_EDDSA_PRIV;
+ ret = 0;
+ break;
+ #endif
+ case PUBLICKEY_TYPE:
+ if (header) *header = BEGIN_PUB_KEY;
+ if (footer) *footer = END_PUB_KEY;
+ ret = 0;
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+#ifdef WOLFSSL_ENCRYPTED_KEYS
+
+static const char* const kProcTypeHeader = "Proc-Type";
+static const char* const kDecInfoHeader = "DEK-Info";
+
+#ifdef WOLFSSL_PEM_TO_DER
+#ifndef NO_DES3
+ static const char* const kEncTypeDes = "DES-CBC";
+ static const char* const kEncTypeDes3 = "DES-EDE3-CBC";
+#endif
+#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_128)
+ static const char* const kEncTypeAesCbc128 = "AES-128-CBC";
+#endif
+#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_192)
+ static const char* const kEncTypeAesCbc192 = "AES-192-CBC";
+#endif
+#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_256)
+ static const char* const kEncTypeAesCbc256 = "AES-256-CBC";
+#endif
+
+int wc_EncryptedInfoGet(EncryptedInfo* info, const char* cipherInfo)
+{
+ int ret = 0;
+
+ if (info == NULL || cipherInfo == NULL)
+ return BAD_FUNC_ARG;
+
+ /* determine cipher information */
+#ifndef NO_DES3
+ if (XSTRNCMP(cipherInfo, kEncTypeDes, XSTRLEN(kEncTypeDes)) == 0) {
+ info->cipherType = WC_CIPHER_DES;
+ info->keySz = DES_KEY_SIZE;
+ if (info->ivSz == 0) info->ivSz = DES_IV_SIZE;
+ }
+ else if (XSTRNCMP(cipherInfo, kEncTypeDes3, XSTRLEN(kEncTypeDes3)) == 0) {
+ info->cipherType = WC_CIPHER_DES3;
+ info->keySz = DES3_KEY_SIZE;
+ if (info->ivSz == 0) info->ivSz = DES_IV_SIZE;
+ }
+ else
+#endif /* !NO_DES3 */
+#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_128)
+ if (XSTRNCMP(cipherInfo, kEncTypeAesCbc128, XSTRLEN(kEncTypeAesCbc128)) == 0) {
+ info->cipherType = WC_CIPHER_AES_CBC;
+ info->keySz = AES_128_KEY_SIZE;
+ if (info->ivSz == 0) info->ivSz = AES_IV_SIZE;
+ }
+ else
+#endif
+#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_192)
+ if (XSTRNCMP(cipherInfo, kEncTypeAesCbc192, XSTRLEN(kEncTypeAesCbc192)) == 0) {
+ info->cipherType = WC_CIPHER_AES_CBC;
+ info->keySz = AES_192_KEY_SIZE;
+ if (info->ivSz == 0) info->ivSz = AES_IV_SIZE;
+ }
+ else
+#endif
+#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_256)
+ if (XSTRNCMP(cipherInfo, kEncTypeAesCbc256, XSTRLEN(kEncTypeAesCbc256)) == 0) {
+ info->cipherType = WC_CIPHER_AES_CBC;
+ info->keySz = AES_256_KEY_SIZE;
+ if (info->ivSz == 0) info->ivSz = AES_IV_SIZE;
+ }
+ else
+#endif
+ {
+ ret = NOT_COMPILED_IN;
+ }
+ return ret;
+}
+
+static int wc_EncryptedInfoParse(EncryptedInfo* info,
+ char** pBuffer, size_t bufSz)
+{
+ int err = 0;
+ char* bufferStart;
+ char* bufferEnd;
+ char* line;
+ word32 lineSz;
+ char* finish;
+ word32 finishSz;
+ char* start = NULL;
+ word32 startSz;
+ char* newline = NULL;
+
+ if (info == NULL || pBuffer == NULL || bufSz == 0)
+ return BAD_FUNC_ARG;
+
+ bufferStart = *pBuffer;
+ bufferEnd = bufferStart + bufSz;
+
+ /* find encrypted info marker */
+ line = XSTRNSTR(bufferStart, kProcTypeHeader,
+ min((word32)bufSz, PEM_LINE_LEN));
+ if (line != NULL) {
+ if (line >= bufferEnd) {
+ return BUFFER_E;
+ }
+
+ lineSz = (word32)(bufferEnd - line);
+
+ /* find DEC-Info marker */
+ start = XSTRNSTR(line, kDecInfoHeader, min(lineSz, PEM_LINE_LEN));
+
+ if (start == NULL)
+ return BUFFER_E;
+
+ /* skip dec-info and ": " */
+ start += XSTRLEN(kDecInfoHeader);
+ if (start >= bufferEnd)
+ return BUFFER_E;
+
+ if (start[0] == ':') {
+ start++;
+ if (start >= bufferEnd)
+ return BUFFER_E;
+ }
+ if (start[0] == ' ')
+ start++;
+
+ startSz = (word32)(bufferEnd - start);
+ finish = XSTRNSTR(start, ",", min(startSz, PEM_LINE_LEN));
+
+ if ((start != NULL) && (finish != NULL) && (start < finish)) {
+ if (finish >= bufferEnd) {
+ return BUFFER_E;
+ }
+
+ finishSz = (word32)(bufferEnd - finish);
+ newline = XSTRNSTR(finish, "\r", min(finishSz, PEM_LINE_LEN));
+
+ /* get cipher name */
+ if (NAME_SZ < (finish - start)) /* buffer size of info->name */
+ return BUFFER_E;
+ if (XMEMCPY(info->name, start, finish - start) == NULL)
+ return BUFFER_E;
+ info->name[finish - start] = '\0'; /* null term */
+
+ /* get IV */
+ if (finishSz < sizeof(info->iv) + 1)
+ return BUFFER_E;
+ if (XMEMCPY(info->iv, finish + 1, sizeof(info->iv)) == NULL)
+ return BUFFER_E;
+
+ if (newline == NULL)
+ newline = XSTRNSTR(finish, "\n", min(finishSz,
+ PEM_LINE_LEN));
+ if ((newline != NULL) && (newline > finish)) {
+ info->ivSz = (word32)(newline - (finish + 1));
+ info->set = 1;
+ }
+ else
+ return BUFFER_E;
+ }
+ else
+ return BUFFER_E;
+
+ /* eat blank line */
+ while (newline < bufferEnd &&
+ (*newline == '\r' || *newline == '\n')) {
+ newline++;
+ }
+
+ /* return new headerEnd */
+ if (pBuffer)
+ *pBuffer = newline;
+
+ /* populate info */
+ err = wc_EncryptedInfoGet(info, info->name);
+ }
+
+ return err;
+}
+#endif /* WOLFSSL_PEM_TO_DER */
+
+#ifdef WOLFSSL_DER_TO_PEM
+static int wc_EncryptedInfoAppend(char* dest, char* cipherInfo)
+{
+ if (cipherInfo != NULL) {
+ size_t cipherInfoStrLen = XSTRLEN(cipherInfo);
+ if (cipherInfoStrLen > HEADER_ENCRYPTED_KEY_SIZE - (9+14+10+3))
+ cipherInfoStrLen = HEADER_ENCRYPTED_KEY_SIZE - (9+14+10+3);
+
+ XSTRNCAT(dest, kProcTypeHeader, 9);
+ XSTRNCAT(dest, ": 4,ENCRYPTED\n", 14);
+ XSTRNCAT(dest, kDecInfoHeader, 8);
+ XSTRNCAT(dest, ": ", 2);
+ XSTRNCAT(dest, cipherInfo, cipherInfoStrLen);
+ XSTRNCAT(dest, "\n\n", 3);
+ }
+ return 0;
+}
+#endif /* WOLFSSL_DER_TO_PEM */
+#endif /* WOLFSSL_ENCRYPTED_KEYS */
+
+#ifdef WOLFSSL_DER_TO_PEM
+
+/* Used for compatibility API */
+int wc_DerToPem(const byte* der, word32 derSz,
+ byte* output, word32 outSz, int type)
+{
+ return wc_DerToPemEx(der, derSz, output, outSz, NULL, type);
+}
+
+/* convert der buffer to pem into output, can't do inplace, der and output
+ need to be different */
+int wc_DerToPemEx(const byte* der, word32 derSz, byte* output, word32 outSz,
+ byte *cipher_info, int type)
+{
+ const char* headerStr = NULL;
+ const char* footerStr = NULL;
+#ifdef WOLFSSL_SMALL_STACK
+ char* header = NULL;
+ char* footer = NULL;
+#else
+ char header[MAX_X509_HEADER_SZ + HEADER_ENCRYPTED_KEY_SIZE];
+ char footer[MAX_X509_HEADER_SZ];
+#endif
+ int headerLen = MAX_X509_HEADER_SZ + HEADER_ENCRYPTED_KEY_SIZE;
+ int footerLen = MAX_X509_HEADER_SZ;
+ int i;
+ int err;
+ int outLen; /* return length or error */
+
+ (void)cipher_info;
+
+ if (der == output) /* no in place conversion */
+ return BAD_FUNC_ARG;
+
+ err = wc_PemGetHeaderFooter(type, &headerStr, &footerStr);
+ if (err != 0)
+ return err;
+
+#ifdef WOLFSSL_SMALL_STACK
+ header = (char*)XMALLOC(headerLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (header == NULL)
+ return MEMORY_E;
+
+ footer = (char*)XMALLOC(footerLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (footer == NULL) {
+ XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+
+ /* null term and leave room for newline */
+ header[--headerLen] = '\0'; header[--headerLen] = '\0';
+ footer[--footerLen] = '\0'; footer[--footerLen] = '\0';
+
+ /* build header and footer based on type */
+ XSTRNCPY(header, headerStr, headerLen);
+ XSTRNCPY(footer, footerStr, footerLen);
+
+ /* add new line to end */
+ XSTRNCAT(header, "\n", 2);
+ XSTRNCAT(footer, "\n", 2);
+
+#ifdef WOLFSSL_ENCRYPTED_KEYS
+ err = wc_EncryptedInfoAppend(header, (char*)cipher_info);
+ if (err != 0) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return err;
+ }
+#endif
+
+ headerLen = (int)XSTRLEN(header);
+ footerLen = (int)XSTRLEN(footer);
+
+ /* if null output and 0 size passed in then return size needed */
+ if (!output && outSz == 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ outLen = 0;
+ if ((err = Base64_Encode(der, derSz, NULL, (word32*)&outLen))
+ != LENGTH_ONLY_E) {
+ return err;
+ }
+ return headerLen + footerLen + outLen;
+ }
+
+ if (!der || !output) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BAD_FUNC_ARG;
+ }
+
+ /* don't even try if outSz too short */
+ if (outSz < headerLen + footerLen + derSz) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BAD_FUNC_ARG;
+ }
+
+ /* header */
+ XMEMCPY(output, header, headerLen);
+ i = headerLen;
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ /* body */
+ outLen = outSz - (headerLen + footerLen); /* input to Base64_Encode */
+ if ( (err = Base64_Encode(der, derSz, output + i, (word32*)&outLen)) < 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return err;
+ }
+ i += outLen;
+
+ /* footer */
+ if ( (i + footerLen) > (int)outSz) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BAD_FUNC_ARG;
+ }
+ XMEMCPY(output + i, footer, footerLen);
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return outLen + headerLen + footerLen;
+}
+
+#endif /* WOLFSSL_DER_TO_PEM */
+
+#ifdef WOLFSSL_PEM_TO_DER
+
+/* Remove PEM header/footer, convert to ASN1, store any encrypted data
+ info->consumed tracks of PEM bytes consumed in case multiple parts */
+int PemToDer(const unsigned char* buff, long longSz, int type,
+ DerBuffer** pDer, void* heap, EncryptedInfo* info, int* eccKey)
+{
+ const char* header = NULL;
+ const char* footer = NULL;
+ char* headerEnd;
+ char* footerEnd;
+ char* consumedEnd;
+ char* bufferEnd = (char*)(buff + longSz);
+ long neededSz;
+ int ret = 0;
+ int sz = (int)longSz;
+ int encrypted_key = 0;
+ DerBuffer* der;
+
+ WOLFSSL_ENTER("PemToDer");
+
+ /* get PEM header and footer based on type */
+ ret = wc_PemGetHeaderFooter(type, &header, &footer);
+ if (ret != 0)
+ return ret;
+
+ /* map header if not found for type */
+ for (;;) {
+ headerEnd = XSTRNSTR((char*)buff, header, sz);
+
+ if (headerEnd || type != PRIVATEKEY_TYPE) {
+ break;
+ } else
+ if (header == BEGIN_RSA_PRIV) {
+ header = BEGIN_PRIV_KEY; footer = END_PRIV_KEY;
+ } else
+ if (header == BEGIN_PRIV_KEY) {
+ header = BEGIN_ENC_PRIV_KEY; footer = END_ENC_PRIV_KEY;
+ } else
+#ifdef HAVE_ECC
+ if (header == BEGIN_ENC_PRIV_KEY) {
+ header = BEGIN_EC_PRIV; footer = END_EC_PRIV;
+ } else
+ if (header == BEGIN_EC_PRIV) {
+ header = BEGIN_DSA_PRIV; footer = END_DSA_PRIV;
+ } else
+#endif
+#ifdef HAVE_ED25519
+ #ifdef HAVE_ECC
+ if (header == BEGIN_DSA_PRIV)
+ #else
+ if (header == BEGIN_ENC_PRIV_KEY)
+ #endif
+ {
+ header = BEGIN_EDDSA_PRIV; footer = END_EDDSA_PRIV;
+ } else
+#endif
+#ifdef HAVE_CRL
+ if (type == CRL_TYPE) {
+ header = BEGIN_CRL; footer = END_CRL;
+ } else
+#endif
+ {
+ break;
+ }
+ }
+
+ if (!headerEnd) {
+ WOLFSSL_MSG("Couldn't find PEM header");
+ return ASN_NO_PEM_HEADER;
+ }
+
+ headerEnd += XSTRLEN(header);
+
+ if ((headerEnd + 1) >= bufferEnd)
+ return BUFFER_E;
+
+ /* eat end of line */
+ if (headerEnd[0] == '\n')
+ headerEnd++;
+ else if (headerEnd[1] == '\n')
+ headerEnd += 2;
+ else {
+ if (info)
+ info->consumed = (long)(headerEnd+2 - (char*)buff);
+ return BUFFER_E;
+ }
+
+ if (type == PRIVATEKEY_TYPE) {
+ if (eccKey) {
+ #ifdef HAVE_ECC
+ *eccKey = (header == BEGIN_EC_PRIV) ? 1 : 0;
+ #else
+ *eccKey = 0;
+ #endif
+ }
+ }
+
+#ifdef WOLFSSL_ENCRYPTED_KEYS
+ if (info) {
+ ret = wc_EncryptedInfoParse(info, &headerEnd, bufferEnd - headerEnd);
+ if (ret < 0)
+ return ret;
+ if (info->set)
+ encrypted_key = 1;
+ }
+#endif /* WOLFSSL_ENCRYPTED_KEYS */
+
+ /* find footer */
+ footerEnd = XSTRNSTR((char*)buff, footer, sz);
+ if (!footerEnd) {
+ if (info)
+ info->consumed = longSz; /* No more certs if no footer */
+ return BUFFER_E;
+ }
+
+ consumedEnd = footerEnd + XSTRLEN(footer);
+
+ if (consumedEnd < bufferEnd) { /* handle no end of line on last line */
+ /* eat end of line */
+ if (consumedEnd[0] == '\n')
+ consumedEnd++;
+ else if ((consumedEnd + 1 < bufferEnd) && consumedEnd[1] == '\n')
+ consumedEnd += 2;
+ else {
+ if (info)
+ info->consumed = (long)(consumedEnd+2 - (char*)buff);
+ return BUFFER_E;
+ }
+ }
+
+ if (info)
+ info->consumed = (long)(consumedEnd - (char*)buff);
+
+ /* set up der buffer */
+ neededSz = (long)(footerEnd - headerEnd);
+ if (neededSz > sz || neededSz <= 0)
+ return BUFFER_E;
+
+ ret = AllocDer(pDer, (word32)neededSz, type, heap);
+ if (ret < 0) {
+ return ret;
+ }
+ der = *pDer;
+
+ if (Base64_Decode((byte*)headerEnd, (word32)neededSz,
+ der->buffer, &der->length) < 0)
+ return BUFFER_E;
+
+ if (header == BEGIN_PRIV_KEY && !encrypted_key) {
+ /* pkcs8 key, convert and adjust length */
+ if ((ret = ToTraditional(der->buffer, der->length)) < 0)
+ return ret;
+
+ der->length = ret;
+ return 0;
+ }
+
+#ifdef WOLFSSL_ENCRYPTED_KEYS
+ if (encrypted_key || header == BEGIN_ENC_PRIV_KEY) {
+ int passwordSz = NAME_SZ;
+ #ifdef WOLFSSL_SMALL_STACK
+ char* password = NULL;
+ #else
+ char password[NAME_SZ];
+ #endif
+
+ if (!info || !info->passwd_cb) {
+ WOLFSSL_MSG("No password callback set");
+ return NO_PASSWORD;
+ }
+
+ #ifdef WOLFSSL_SMALL_STACK
+ password = (char*)XMALLOC(passwordSz, heap, DYNAMIC_TYPE_STRING);
+ if (password == NULL)
+ return MEMORY_E;
+ #endif
+
+ /* get password */
+ ret = info->passwd_cb(password, passwordSz, PEM_PASS_READ,
+ info->passwd_userdata);
+ if (ret >= 0) {
+ passwordSz = ret;
+
+ /* convert and adjust length */
+ if (header == BEGIN_ENC_PRIV_KEY) {
+ #ifndef NO_PWDBASED
+ ret = ToTraditionalEnc(der->buffer, der->length,
+ password, passwordSz);
+
+ if (ret >= 0) {
+ der->length = ret;
+ }
+ #else
+ ret = NOT_COMPILED_IN;
+ #endif
+ }
+ /* decrypt the key */
+ else {
+ ret = wc_BufferKeyDecrypt(info, der->buffer, der->length,
+ (byte*)password, passwordSz, WC_MD5);
+ }
+ ForceZero(password, passwordSz);
+ }
+
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(password, heap, DYNAMIC_TYPE_STRING);
+ #endif
+ }
+#endif /* WOLFSSL_ENCRYPTED_KEYS */
+
+ return ret;
+}
+
+int wc_PemToDer(const unsigned char* buff, long longSz, int type,
+ DerBuffer** pDer, void* heap, EncryptedInfo* info, int* eccKey)
+{
+ return PemToDer(buff, longSz, type, pDer, heap, info, eccKey);
+}
+
+
+/* our KeyPemToDer password callback, password in userData */
+static WC_INLINE int OurPasswordCb(char* passwd, int sz, int rw, void* userdata)
+{
+ (void)rw;
+
+ if (userdata == NULL)
+ return 0;
+
+ XSTRNCPY(passwd, (char*)userdata, sz);
+ return min((word32)sz, (word32)XSTRLEN((char*)userdata));
+}
+
+/* Return bytes written to buff or < 0 for error */
+int wc_KeyPemToDer(const unsigned char* pem, int pemSz,
+ unsigned char* buff, int buffSz, const char* pass)
+{
+ int eccKey = 0;
+ int ret;
+ DerBuffer* der = NULL;
+#ifdef WOLFSSL_SMALL_STACK
+ EncryptedInfo* info = NULL;
+#else
+ EncryptedInfo info[1];
+#endif
+
+ WOLFSSL_ENTER("wc_KeyPemToDer");
+
+ if (pem == NULL || buff == NULL || buffSz <= 0) {
+ WOLFSSL_MSG("Bad pem der args");
+ return BAD_FUNC_ARG;
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ info = (EncryptedInfo*)XMALLOC(sizeof(EncryptedInfo), NULL,
+ DYNAMIC_TYPE_ENCRYPTEDINFO);
+ if (info == NULL)
+ return MEMORY_E;
+#endif
+
+ XMEMSET(info, 0, sizeof(EncryptedInfo));
+ info->passwd_cb = OurPasswordCb;
+ info->passwd_userdata = (void*)pass;
+
+ ret = PemToDer(pem, pemSz, PRIVATEKEY_TYPE, &der, NULL, info, &eccKey);
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(info, NULL, DYNAMIC_TYPE_ENCRYPTEDINFO);
+#endif
+
+ if (ret < 0) {
+ WOLFSSL_MSG("Bad Pem To Der");
+ }
+ else {
+ if (der->length <= (word32)buffSz) {
+ XMEMCPY(buff, der->buffer, der->length);
+ ret = der->length;
+ }
+ else {
+ WOLFSSL_MSG("Bad der length");
+ ret = BAD_FUNC_ARG;
+ }
+ }
+
+ FreeDer(&der);
+ return ret;
+}
+
+
+/* Return bytes written to buff or < 0 for error */
+int wc_CertPemToDer(const unsigned char* pem, int pemSz,
+ unsigned char* buff, int buffSz, int type)
+{
+ int eccKey = 0;
+ int ret;
+ DerBuffer* der = NULL;
+
+ WOLFSSL_ENTER("wc_CertPemToDer");
+
+ if (pem == NULL || buff == NULL || buffSz <= 0) {
+ WOLFSSL_MSG("Bad pem der args");
+ return BAD_FUNC_ARG;
+ }
+
+ if (type != CERT_TYPE && type != CA_TYPE && type != CERTREQ_TYPE) {
+ WOLFSSL_MSG("Bad cert type");
+ return BAD_FUNC_ARG;
+ }
+
+
+ ret = PemToDer(pem, pemSz, type, &der, NULL, NULL, &eccKey);
+ if (ret < 0) {
+ WOLFSSL_MSG("Bad Pem To Der");
+ }
+ else {
+ if (der->length <= (word32)buffSz) {
+ XMEMCPY(buff, der->buffer, der->length);
+ ret = der->length;
+ }
+ else {
+ WOLFSSL_MSG("Bad der length");
+ ret = BAD_FUNC_ARG;
+ }
+ }
+
+ FreeDer(&der);
+ return ret;
+}
+
+#endif /* WOLFSSL_PEM_TO_DER */
+#endif /* WOLFSSL_PEM_TO_DER || WOLFSSL_DER_TO_PEM */
+
+
+#ifdef WOLFSSL_PEM_TO_DER
+#if defined(WOLFSSL_CERT_EXT) || defined(WOLFSSL_PUB_PEM_TO_DER)
+/* Return bytes written to buff or < 0 for error */
+int wc_PubKeyPemToDer(const unsigned char* pem, int pemSz,
+ unsigned char* buff, int buffSz)
+{
+ int ret;
+ DerBuffer* der = NULL;
+
+ WOLFSSL_ENTER("wc_PubKeyPemToDer");
+
+ if (pem == NULL || buff == NULL || buffSz <= 0) {
+ WOLFSSL_MSG("Bad pem der args");
+ return BAD_FUNC_ARG;
+ }
+
+ ret = PemToDer(pem, pemSz, PUBLICKEY_TYPE, &der, NULL, NULL, NULL);
+ if (ret < 0) {
+ WOLFSSL_MSG("Bad Pem To Der");
+ }
+ else {
+ if (der->length <= (word32)buffSz) {
+ XMEMCPY(buff, der->buffer, der->length);
+ ret = der->length;
+ }
+ else {
+ WOLFSSL_MSG("Bad der length");
+ ret = BAD_FUNC_ARG;
+ }
+ }
+
+ FreeDer(&der);
+ return ret;
+}
+#endif /* WOLFSSL_CERT_EXT || WOLFSSL_PUB_PEM_TO_DER */
+#endif /* WOLFSSL_PEM_TO_DER */
+
+#ifndef NO_FILESYSTEM
+
+#ifdef WOLFSSL_CERT_GEN
+/* load pem cert from file into der buffer, return der size or error */
+int wc_PemCertToDer(const char* fileName, unsigned char* derBuf, int derSz)
+{
+#ifdef WOLFSSL_SMALL_STACK
+ byte staticBuffer[1]; /* force XMALLOC */
+#else
+ byte staticBuffer[FILE_BUFFER_SIZE];
+#endif
+ byte* fileBuf = staticBuffer;
+ int dynamic = 0;
+ int ret = 0;
+ long sz = 0;
+ XFILE file = XFOPEN(fileName, "rb");
+ DerBuffer* converted = NULL;
+
+ WOLFSSL_ENTER("wc_PemCertToDer");
+
+ if (file == XBADFILE) {
+ ret = BUFFER_E;
+ }
+ else {
+ XFSEEK(file, 0, XSEEK_END);
+ sz = XFTELL(file);
+ XREWIND(file);
+
+ if (sz <= 0) {
+ ret = BUFFER_E;
+ }
+ else if (sz > (long)sizeof(staticBuffer)) {
+ #ifdef WOLFSSL_STATIC_MEMORY
+ WOLFSSL_MSG("File was larger then static buffer");
+ return MEMORY_E;
+ #endif
+ fileBuf = (byte*)XMALLOC(sz, NULL, DYNAMIC_TYPE_FILE);
+ if (fileBuf == NULL)
+ ret = MEMORY_E;
+ else
+ dynamic = 1;
+ }
+
+ if (ret == 0) {
+ if ( (ret = (int)XFREAD(fileBuf, 1, sz, file)) != sz) {
+ ret = BUFFER_E;
+ }
+ #ifdef WOLFSSL_PEM_TO_DER
+ else {
+ ret = PemToDer(fileBuf, sz, CA_TYPE, &converted, 0, NULL,NULL);
+ }
+ #endif
+
+ if (ret == 0) {
+ if (converted->length < (word32)derSz) {
+ XMEMCPY(derBuf, converted->buffer, converted->length);
+ ret = converted->length;
+ }
+ else
+ ret = BUFFER_E;
+ }
+
+ FreeDer(&converted);
+ }
+
+ XFCLOSE(file);
+ if (dynamic)
+ XFREE(fileBuf, NULL, DYNAMIC_TYPE_FILE);
+ }
+
+ return ret;
+}
+#endif /* WOLFSSL_CERT_GEN */
+
+#if defined(WOLFSSL_CERT_EXT) || defined(WOLFSSL_PUB_PEM_TO_DER)
+/* load pem public key from file into der buffer, return der size or error */
+int wc_PemPubKeyToDer(const char* fileName,
+ unsigned char* derBuf, int derSz)
+{
+#ifdef WOLFSSL_SMALL_STACK
+ byte staticBuffer[1]; /* force XMALLOC */
+#else
+ byte staticBuffer[FILE_BUFFER_SIZE];
+#endif
+ byte* fileBuf = staticBuffer;
+ int dynamic = 0;
+ int ret = 0;
+ long sz = 0;
+ XFILE file = XFOPEN(fileName, "rb");
+ DerBuffer* converted = NULL;
+
+ WOLFSSL_ENTER("wc_PemPubKeyToDer");
+
+ if (file == XBADFILE) {
+ ret = BUFFER_E;
+ }
+ else {
+ XFSEEK(file, 0, XSEEK_END);
+ sz = XFTELL(file);
+ XREWIND(file);
+
+ if (sz <= 0) {
+ ret = BUFFER_E;
+ }
+ else if (sz > (long)sizeof(staticBuffer)) {
+ #ifdef WOLFSSL_STATIC_MEMORY
+ WOLFSSL_MSG("File was larger then static buffer");
+ return MEMORY_E;
+ #endif
+ fileBuf = (byte*)XMALLOC(sz, NULL, DYNAMIC_TYPE_FILE);
+ if (fileBuf == NULL)
+ ret = MEMORY_E;
+ else
+ dynamic = 1;
+ }
+ if (ret == 0) {
+ if ( (ret = (int)XFREAD(fileBuf, 1, sz, file)) != sz) {
+ ret = BUFFER_E;
+ }
+ #ifdef WOLFSSL_PEM_TO_DER
+ else {
+ ret = PemToDer(fileBuf, sz, PUBLICKEY_TYPE, &converted,
+ 0, NULL, NULL);
+ }
+ #endif
+
+ if (ret == 0) {
+ if (converted->length < (word32)derSz) {
+ XMEMCPY(derBuf, converted->buffer, converted->length);
+ ret = converted->length;
+ }
+ else
+ ret = BUFFER_E;
+ }
+
+ FreeDer(&converted);
+ }
+
+ XFCLOSE(file);
+ if (dynamic)
+ XFREE(fileBuf, NULL, DYNAMIC_TYPE_FILE);
+ }
+
+ return ret;
+}
+#endif /* WOLFSSL_CERT_EXT || WOLFSSL_PUB_PEM_TO_DER */
+
+#endif /* !NO_FILESYSTEM */
+
+
+#if !defined(NO_RSA) && (defined(WOLFSSL_CERT_GEN) || \
+ ((defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(HAVE_USER_RSA)))
+/* USER RSA ifdef portions used instead of refactor in consideration for
+ possible fips build */
+/* Write a public RSA key to output */
+static int SetRsaPublicKey(byte* output, RsaKey* key,
+ int outLen, int with_header)
+{
+#ifdef WOLFSSL_SMALL_STACK
+ byte* n = NULL;
+ byte* e = NULL;
+#else
+ byte n[MAX_RSA_INT_SZ];
+ byte e[MAX_RSA_E_SZ];
+#endif
+ byte seq[MAX_SEQ_SZ];
+ byte bitString[1 + MAX_LENGTH_SZ + 1];
+ int nSz;
+ int eSz;
+ int seqSz;
+ int bitStringSz;
+ int idx;
+
+ if (output == NULL || key == NULL || outLen < MAX_SEQ_SZ)
+ return BAD_FUNC_ARG;
+
+ /* n */
+#ifdef WOLFSSL_SMALL_STACK
+ n = (byte*)XMALLOC(MAX_RSA_INT_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (n == NULL)
+ return MEMORY_E;
+#endif
+
+#ifdef HAVE_USER_RSA
+ nSz = SetASNIntRSA(key->n, n);
+#else
+ nSz = SetASNIntMP(&key->n, MAX_RSA_INT_SZ, n);
+#endif
+ if (nSz < 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return nSz;
+ }
+
+ /* e */
+#ifdef WOLFSSL_SMALL_STACK
+ e = (byte*)XMALLOC(MAX_RSA_E_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (e == NULL) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return MEMORY_E;
+ }
+#endif
+
+#ifdef HAVE_USER_RSA
+ eSz = SetASNIntRSA(key->e, e);
+#else
+ eSz = SetASNIntMP(&key->e, MAX_RSA_INT_SZ, e);
+#endif
+ if (eSz < 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return eSz;
+ }
+
+ seqSz = SetSequence(nSz + eSz, seq);
+
+ /* check output size */
+ if ( (seqSz + nSz + eSz) > outLen) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BUFFER_E;
+ }
+
+ /* headers */
+ if (with_header) {
+ int algoSz;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* algo = NULL;
+
+ algo = (byte*)XMALLOC(MAX_ALGO_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (algo == NULL) {
+ XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#else
+ byte algo[MAX_ALGO_SZ];
+#endif
+ algoSz = SetAlgoID(RSAk, algo, oidKeyType, 0);
+ bitStringSz = SetBitString(seqSz + nSz + eSz, 0, bitString);
+
+ idx = SetSequence(nSz + eSz + seqSz + bitStringSz + algoSz, output);
+
+ /* check output size */
+ if ( (idx + algoSz + bitStringSz + seqSz + nSz + eSz) > outLen) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(algo, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+
+ return BUFFER_E;
+ }
+
+ /* algo */
+ XMEMCPY(output + idx, algo, algoSz);
+ idx += algoSz;
+ /* bit string */
+ XMEMCPY(output + idx, bitString, bitStringSz);
+ idx += bitStringSz;
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(algo, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ }
+ else
+ idx = 0;
+
+ /* seq */
+ XMEMCPY(output + idx, seq, seqSz);
+ idx += seqSz;
+ /* n */
+ XMEMCPY(output + idx, n, nSz);
+ idx += nSz;
+ /* e */
+ XMEMCPY(output + idx, e, eSz);
+ idx += eSz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(n, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return idx;
+}
+
+int RsaPublicKeyDerSize(RsaKey* key, int with_header)
+{
+ byte* dummy = NULL;
+ byte seq[MAX_SEQ_SZ];
+ byte bitString[1 + MAX_LENGTH_SZ + 1];
+ int nSz;
+ int eSz;
+ int seqSz;
+ int bitStringSz;
+ int idx;
+
+ if (key == NULL)
+ return BAD_FUNC_ARG;
+
+ /* n */
+ dummy = (byte*)XMALLOC(MAX_RSA_INT_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (dummy == NULL)
+ return MEMORY_E;
+
+#ifdef HAVE_USER_RSA
+ nSz = SetASNIntRSA(key->n, dummy);
+#else
+ nSz = SetASNIntMP(&key->n, MAX_RSA_INT_SZ, dummy);
+#endif
+ XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (nSz < 0) {
+ return nSz;
+ }
+
+ /* e */
+ dummy = (byte*)XMALLOC(MAX_RSA_E_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (dummy == NULL) {
+ XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+
+#ifdef HAVE_USER_RSA
+ eSz = SetASNIntRSA(key->e, dummy);
+#else
+ eSz = SetASNIntMP(&key->e, MAX_RSA_INT_SZ, dummy);
+#endif
+ XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (eSz < 0) {
+ return eSz;
+ }
+
+ seqSz = SetSequence(nSz + eSz, seq);
+
+ /* headers */
+ if (with_header) {
+ int algoSz;
+ dummy = (byte*)XMALLOC(MAX_RSA_INT_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (dummy == NULL)
+ return MEMORY_E;
+
+ algoSz = SetAlgoID(RSAk, dummy, oidKeyType, 0);
+ bitStringSz = SetBitString(seqSz + nSz + eSz, 0, bitString);
+
+ idx = SetSequence(nSz + eSz + seqSz + bitStringSz + algoSz, dummy);
+ XFREE(dummy, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+
+ /* algo */
+ idx += algoSz;
+ /* bit string */
+ idx += bitStringSz;
+ }
+ else
+ idx = 0;
+
+ /* seq */
+ idx += seqSz;
+ /* n */
+ idx += nSz;
+ /* e */
+ idx += eSz;
+
+ return idx;
+}
+#endif /* !NO_RSA && (WOLFSSL_CERT_GEN || (WOLFSSL_KEY_GEN &&
+ !HAVE_USER_RSA))) */
+
+
+#if defined(WOLFSSL_KEY_GEN) && !defined(NO_RSA) && !defined(HAVE_USER_RSA)
+
+
+static mp_int* GetRsaInt(RsaKey* key, int idx)
+{
+ if (idx == 0)
+ return &key->n;
+ if (idx == 1)
+ return &key->e;
+ if (idx == 2)
+ return &key->d;
+ if (idx == 3)
+ return &key->p;
+ if (idx == 4)
+ return &key->q;
+ if (idx == 5)
+ return &key->dP;
+ if (idx == 6)
+ return &key->dQ;
+ if (idx == 7)
+ return &key->u;
+
+ return NULL;
+}
+
+
+/* Release Tmp RSA resources */
+static WC_INLINE void FreeTmpRsas(byte** tmps, void* heap)
+{
+ int i;
+
+ (void)heap;
+
+ for (i = 0; i < RSA_INTS; i++)
+ XFREE(tmps[i], heap, DYNAMIC_TYPE_RSA);
+}
+
+
+/* Convert RsaKey key to DER format, write to output (inLen), return bytes
+ written */
+int wc_RsaKeyToDer(RsaKey* key, byte* output, word32 inLen)
+{
+ word32 seqSz, verSz, rawLen, intTotalLen = 0;
+ word32 sizes[RSA_INTS];
+ int i, j, outLen, ret = 0, mpSz;
+
+ byte seq[MAX_SEQ_SZ];
+ byte ver[MAX_VERSION_SZ];
+ byte* tmps[RSA_INTS];
+
+ if (!key || !output)
+ return BAD_FUNC_ARG;
+
+ if (key->type != RSA_PRIVATE)
+ return BAD_FUNC_ARG;
+
+ for (i = 0; i < RSA_INTS; i++)
+ tmps[i] = NULL;
+
+ /* write all big ints from key to DER tmps */
+ for (i = 0; i < RSA_INTS; i++) {
+ mp_int* keyInt = GetRsaInt(key, i);
+
+ rawLen = mp_unsigned_bin_size(keyInt) + 1;
+ tmps[i] = (byte*)XMALLOC(rawLen + MAX_SEQ_SZ, key->heap,
+ DYNAMIC_TYPE_RSA);
+ if (tmps[i] == NULL) {
+ ret = MEMORY_E;
+ break;
+ }
+
+ mpSz = SetASNIntMP(keyInt, MAX_RSA_INT_SZ, tmps[i]);
+ if (mpSz < 0) {
+ ret = mpSz;
+ break;
+ }
+ intTotalLen += (sizes[i] = mpSz);
+ }
+
+ if (ret != 0) {
+ FreeTmpRsas(tmps, key->heap);
+ return ret;
+ }
+
+ /* make headers */
+ verSz = SetMyVersion(0, ver, FALSE);
+ seqSz = SetSequence(verSz + intTotalLen, seq);
+
+ outLen = seqSz + verSz + intTotalLen;
+ if (outLen > (int)inLen) {
+ FreeTmpRsas(tmps, key->heap);
+ return BAD_FUNC_ARG;
+ }
+
+ /* write to output */
+ XMEMCPY(output, seq, seqSz);
+ j = seqSz;
+ XMEMCPY(output + j, ver, verSz);
+ j += verSz;
+
+ for (i = 0; i < RSA_INTS; i++) {
+ XMEMCPY(output + j, tmps[i], sizes[i]);
+ j += sizes[i];
+ }
+ FreeTmpRsas(tmps, key->heap);
+
+ return outLen;
+}
+#endif
+
+#if (defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA)) && !defined(NO_RSA) && !defined(HAVE_USER_RSA)
+/* Convert Rsa Public key to DER format, write to output (inLen), return bytes
+ written */
+int wc_RsaKeyToPublicDer(RsaKey* key, byte* output, word32 inLen)
+{
+ return SetRsaPublicKey(output, key, inLen, 1);
+}
+
+#endif /* WOLFSSL_KEY_GEN && !NO_RSA && !HAVE_USER_RSA */
+
+
+#ifdef WOLFSSL_CERT_GEN
+
+/* Initialize and Set Certificate defaults:
+ version = 3 (0x2)
+ serial = 0
+ sigType = SHA_WITH_RSA
+ issuer = blank
+ daysValid = 500
+ selfSigned = 1 (true) use subject as issuer
+ subject = blank
+*/
+int wc_InitCert(Cert* cert)
+{
+#ifdef WOLFSSL_MULTI_ATTRIB
+ int i = 0;
+#endif
+ if (cert == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ XMEMSET(cert, 0, sizeof(Cert));
+
+ cert->version = 2; /* version 3 is hex 2 */
+#ifndef NO_SHA
+ cert->sigType = CTC_SHAwRSA;
+#elif !defined(NO_SHA256)
+ cert->sigType = CTC_SHA256wRSA;
+#else
+ cert->sigType = 0;
+#endif
+ cert->daysValid = 500;
+ cert->selfSigned = 1;
+ cert->keyType = RSA_KEY;
+
+ cert->issuer.countryEnc = CTC_PRINTABLE;
+ cert->issuer.stateEnc = CTC_UTF8;
+ cert->issuer.localityEnc = CTC_UTF8;
+ cert->issuer.surEnc = CTC_UTF8;
+ cert->issuer.orgEnc = CTC_UTF8;
+ cert->issuer.unitEnc = CTC_UTF8;
+ cert->issuer.commonNameEnc = CTC_UTF8;
+
+ cert->subject.countryEnc = CTC_PRINTABLE;
+ cert->subject.stateEnc = CTC_UTF8;
+ cert->subject.localityEnc = CTC_UTF8;
+ cert->subject.surEnc = CTC_UTF8;
+ cert->subject.orgEnc = CTC_UTF8;
+ cert->subject.unitEnc = CTC_UTF8;
+ cert->subject.commonNameEnc = CTC_UTF8;
+
+#ifdef WOLFSSL_MULTI_ATTRIB
+ for (i = 0; i < CTC_MAX_ATTRIB; i++) {
+ cert->issuer.name[i].type = CTC_UTF8;
+ cert->subject.name[i].type = CTC_UTF8;
+ }
+#endif /* WOLFSSL_MULTI_ATTRIB */
+
+#ifdef WOLFSSL_HEAP_TEST
+ cert->heap = (void*)WOLFSSL_HEAP_TEST;
+#endif
+
+ return 0;
+}
+
+
+/* DER encoded x509 Certificate */
+typedef struct DerCert {
+ byte size[MAX_LENGTH_SZ]; /* length encoded */
+ byte version[MAX_VERSION_SZ]; /* version encoded */
+ byte serial[(int)CTC_SERIAL_SIZE + (int)MAX_LENGTH_SZ]; /* serial number encoded */
+ byte sigAlgo[MAX_ALGO_SZ]; /* signature algo encoded */
+ byte issuer[ASN_NAME_MAX]; /* issuer encoded */
+ byte subject[ASN_NAME_MAX]; /* subject encoded */
+ byte validity[MAX_DATE_SIZE*2 + MAX_SEQ_SZ*2]; /* before and after dates */
+ byte publicKey[MAX_PUBLIC_KEY_SZ]; /* rsa / ntru public key encoded */
+ byte ca[MAX_CA_SZ]; /* basic constraint CA true size */
+ byte extensions[MAX_EXTENSIONS_SZ]; /* all extensions */
+#ifdef WOLFSSL_CERT_EXT
+ byte skid[MAX_KID_SZ]; /* Subject Key Identifier extension */
+ byte akid[MAX_KID_SZ]; /* Authority Key Identifier extension */
+ byte keyUsage[MAX_KEYUSAGE_SZ]; /* Key Usage extension */
+ byte extKeyUsage[MAX_EXTKEYUSAGE_SZ]; /* Extended Key Usage extension */
+ byte certPolicies[MAX_CERTPOL_NB*MAX_CERTPOL_SZ]; /* Certificate Policies */
+#endif
+#ifdef WOLFSSL_CERT_REQ
+ byte attrib[MAX_ATTRIB_SZ]; /* Cert req attributes encoded */
+#endif
+#ifdef WOLFSSL_ALT_NAMES
+ byte altNames[CTC_MAX_ALT_SIZE]; /* Alternative Names encoded */
+#endif
+ int sizeSz; /* encoded size length */
+ int versionSz; /* encoded version length */
+ int serialSz; /* encoded serial length */
+ int sigAlgoSz; /* encoded sig alog length */
+ int issuerSz; /* encoded issuer length */
+ int subjectSz; /* encoded subject length */
+ int validitySz; /* encoded validity length */
+ int publicKeySz; /* encoded public key length */
+ int caSz; /* encoded CA extension length */
+#ifdef WOLFSSL_CERT_EXT
+ int skidSz; /* encoded SKID extension length */
+ int akidSz; /* encoded SKID extension length */
+ int keyUsageSz; /* encoded KeyUsage extension length */
+ int extKeyUsageSz; /* encoded ExtendedKeyUsage extension length */
+ int certPoliciesSz; /* encoded CertPolicies extension length*/
+#endif
+#ifdef WOLFSSL_ALT_NAMES
+ int altNamesSz; /* encoded AltNames extension length */
+#endif
+ int extensionsSz; /* encoded extensions total length */
+ int total; /* total encoded lengths */
+#ifdef WOLFSSL_CERT_REQ
+ int attribSz;
+#endif
+} DerCert;
+
+
+#ifdef WOLFSSL_CERT_REQ
+
+/* Write a set header to output */
+static word32 SetUTF8String(word32 len, byte* output)
+{
+ output[0] = ASN_UTF8STRING;
+ return SetLength(len, output + 1) + 1;
+}
+
+#endif /* WOLFSSL_CERT_REQ */
+
+#endif /*WOLFSSL_CERT_GEN */
+
+#if defined(HAVE_ECC)
+
+/* Write a public ECC key to output */
+static int SetEccPublicKey(byte* output, ecc_key* key, int with_header)
+{
+ byte bitString[1 + MAX_LENGTH_SZ + 1];
+ int algoSz;
+ int curveSz;
+ int bitStringSz;
+ int idx;
+ word32 pubSz = ECC_BUFSIZE;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* algo = NULL;
+ byte* curve = NULL;
+ byte* pub = NULL;
+#else
+ byte algo[MAX_ALGO_SZ];
+ byte curve[MAX_ALGO_SZ];
+ byte pub[ECC_BUFSIZE];
+#endif
+ int ret;
+
+#ifdef WOLFSSL_SMALL_STACK
+ pub = (byte*)XMALLOC(ECC_BUFSIZE, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (pub == NULL)
+ return MEMORY_E;
+#endif
+
+ ret = wc_ecc_export_x963(key, pub, &pubSz);
+ if (ret != 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ret;
+ }
+
+ /* headers */
+ if (with_header) {
+#ifdef WOLFSSL_SMALL_STACK
+ curve = (byte*)XMALLOC(MAX_ALGO_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (curve == NULL) {
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+ curveSz = SetCurve(key, curve);
+ if (curveSz <= 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(curve, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return curveSz;
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ algo = (byte*)XMALLOC(MAX_ALGO_SZ, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (algo == NULL) {
+ XFREE(curve, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+ algoSz = SetAlgoID(ECDSAk, algo, oidKeyType, curveSz);
+
+ bitStringSz = SetBitString(pubSz, 0, bitString);
+
+ idx = SetSequence(pubSz + curveSz + bitStringSz + algoSz, output);
+ /* algo */
+ XMEMCPY(output + idx, algo, algoSz);
+ idx += algoSz;
+ /* curve */
+ XMEMCPY(output + idx, curve, curveSz);
+ idx += curveSz;
+ /* bit string */
+ XMEMCPY(output + idx, bitString, bitStringSz);
+ idx += bitStringSz;
+ }
+ else
+ idx = 0;
+
+ /* pub */
+ XMEMCPY(output + idx, pub, pubSz);
+ idx += pubSz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ if (with_header) {
+ XFREE(algo, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(curve, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ }
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return idx;
+}
+
+
+/* returns the size of buffer used, the public ECC key in DER format is stored
+ in output buffer
+ with_AlgCurve is a flag for when to include a header that has the Algorithm
+ and Curve infromation */
+int wc_EccPublicKeyToDer(ecc_key* key, byte* output, word32 inLen,
+ int with_AlgCurve)
+{
+ word32 infoSz = 0;
+ word32 keySz = 0;
+ int ret;
+
+ if (output == NULL || key == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ if (with_AlgCurve) {
+ /* buffer space for algorithm/curve */
+ infoSz += MAX_SEQ_SZ;
+ infoSz += 2 * MAX_ALGO_SZ;
+
+ /* buffer space for public key sequence */
+ infoSz += MAX_SEQ_SZ;
+ infoSz += TRAILING_ZERO;
+ }
+
+ if ((ret = wc_ecc_export_x963(key, NULL, &keySz)) != LENGTH_ONLY_E) {
+ WOLFSSL_MSG("Error in getting ECC public key size");
+ return ret;
+ }
+
+ if (inLen < keySz + infoSz) {
+ return BUFFER_E;
+ }
+
+ return SetEccPublicKey(output, key, with_AlgCurve);
+}
+#endif /* HAVE_ECC */
+
+#if defined(HAVE_ED25519) && (defined(WOLFSSL_CERT_GEN) || \
+ defined(WOLFSSL_KEY_GEN))
+
+/* Write a public ECC key to output */
+static int SetEd25519PublicKey(byte* output, ed25519_key* key, int with_header)
+{
+ byte bitString[1 + MAX_LENGTH_SZ + 1];
+ int algoSz;
+ int bitStringSz;
+ int idx;
+ word32 pubSz = ED25519_PUB_KEY_SIZE;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* algo = NULL;
+ byte* pub = NULL;
+#else
+ byte algo[MAX_ALGO_SZ];
+ byte pub[ED25519_PUB_KEY_SIZE];
+#endif
+
+#ifdef WOLFSSL_SMALL_STACK
+ pub = (byte*)XMALLOC(ECC_BUFSIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (pub == NULL)
+ return MEMORY_E;
+#endif
+
+ int ret = wc_ed25519_export_public(key, pub, &pubSz);
+ if (ret != 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ret;
+ }
+
+ /* headers */
+ if (with_header) {
+#ifdef WOLFSSL_SMALL_STACK
+ algo = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (algo == NULL) {
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+ algoSz = SetAlgoID(ED25519k, algo, oidKeyType, 0);
+
+ bitStringSz = SetBitString(pubSz, 0, bitString);
+
+ idx = SetSequence(pubSz + bitStringSz + algoSz, output);
+ /* algo */
+ XMEMCPY(output + idx, algo, algoSz);
+ idx += algoSz;
+ /* bit string */
+ XMEMCPY(output + idx, bitString, bitStringSz);
+ idx += bitStringSz;
+ }
+ else
+ idx = 0;
+
+ /* pub */
+ XMEMCPY(output + idx, pub, pubSz);
+ idx += pubSz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ if (with_header) {
+ XFREE(algo, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ }
+ XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return idx;
+}
+
+int wc_Ed25519PublicKeyToDer(ed25519_key* key, byte* output, word32 inLen,
+ int withAlg)
+{
+ word32 infoSz = 0;
+ word32 keySz = 0;
+ int ret;
+
+ if (output == NULL || key == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ if (withAlg) {
+ /* buffer space for algorithm */
+ infoSz += MAX_SEQ_SZ;
+ infoSz += MAX_ALGO_SZ;
+
+ /* buffer space for public key sequence */
+ infoSz += MAX_SEQ_SZ;
+ infoSz += TRAILING_ZERO;
+ }
+
+ if ((ret = wc_ed25519_export_public(key, output, &keySz)) != BUFFER_E) {
+ WOLFSSL_MSG("Error in getting ECC public key size");
+ return ret;
+ }
+
+ if (inLen < keySz + infoSz) {
+ return BUFFER_E;
+ }
+
+ return SetEd25519PublicKey(output, key, withAlg);
+}
+#endif /* HAVE_ED25519 && (WOLFSSL_CERT_GEN || WOLFSSL_KEY_GEN) */
+
+
+#ifdef WOLFSSL_CERT_GEN
+
+static WC_INLINE byte itob(int number)
+{
+ return (byte)number + 0x30;
+}
+
+
+/* write time to output, format */
+static void SetTime(struct tm* date, byte* output)
+{
+ int i = 0;
+
+ output[i++] = itob((date->tm_year % 10000) / 1000);
+ output[i++] = itob((date->tm_year % 1000) / 100);
+ output[i++] = itob((date->tm_year % 100) / 10);
+ output[i++] = itob( date->tm_year % 10);
+
+ output[i++] = itob(date->tm_mon / 10);
+ output[i++] = itob(date->tm_mon % 10);
+
+ output[i++] = itob(date->tm_mday / 10);
+ output[i++] = itob(date->tm_mday % 10);
+
+ output[i++] = itob(date->tm_hour / 10);
+ output[i++] = itob(date->tm_hour % 10);
+
+ output[i++] = itob(date->tm_min / 10);
+ output[i++] = itob(date->tm_min % 10);
+
+ output[i++] = itob(date->tm_sec / 10);
+ output[i++] = itob(date->tm_sec % 10);
+
+ output[i] = 'Z'; /* Zulu profile */
+}
+
+
+#ifdef WOLFSSL_ALT_NAMES
+
+/* Copy Dates from cert, return bytes written */
+static int CopyValidity(byte* output, Cert* cert)
+{
+ int seqSz;
+
+ WOLFSSL_ENTER("CopyValidity");
+
+ /* headers and output */
+ seqSz = SetSequence(cert->beforeDateSz + cert->afterDateSz, output);
+ XMEMCPY(output + seqSz, cert->beforeDate, cert->beforeDateSz);
+ XMEMCPY(output + seqSz + cert->beforeDateSz, cert->afterDate,
+ cert->afterDateSz);
+ return seqSz + cert->beforeDateSz + cert->afterDateSz;
+}
+
+#endif
+
+
+/* Set Date validity from now until now + daysValid
+ * return size in bytes written to output, 0 on error */
+static int SetValidity(byte* output, int daysValid)
+{
+ byte before[MAX_DATE_SIZE];
+ byte after[MAX_DATE_SIZE];
+
+ int beforeSz;
+ int afterSz;
+ int seqSz;
+
+ time_t now;
+ time_t then;
+ struct tm* tmpTime = NULL;
+ struct tm* expandedTime;
+ struct tm localTime;
+
+#if defined(NEED_TMP_TIME)
+ /* for use with gmtime_r */
+ struct tm tmpTimeStorage;
+ tmpTime = &tmpTimeStorage;
+#else
+ (void)tmpTime;
+#endif
+
+ now = XTIME(0);
+
+ /* before now */
+ before[0] = ASN_GENERALIZED_TIME;
+ beforeSz = SetLength(ASN_GEN_TIME_SZ, before + 1) + 1; /* gen tag */
+
+ /* subtract 1 day of seconds for more compliance */
+ then = now - 86400;
+ expandedTime = XGMTIME(&then, tmpTime);
+ if (expandedTime == NULL) {
+ WOLFSSL_MSG("XGMTIME failed");
+ return 0; /* error */
+ }
+ localTime = *expandedTime;
+
+ /* adjust */
+ localTime.tm_year += 1900;
+ localTime.tm_mon += 1;
+
+ SetTime(&localTime, before + beforeSz);
+ beforeSz += ASN_GEN_TIME_SZ;
+
+ after[0] = ASN_GENERALIZED_TIME;
+ afterSz = SetLength(ASN_GEN_TIME_SZ, after + 1) + 1; /* gen tag */
+
+ /* add daysValid of seconds */
+ then = now + (daysValid * 3600);
+ expandedTime = XGMTIME(&then, tmpTime);
+ if (expandedTime == NULL) {
+ WOLFSSL_MSG("XGMTIME failed");
+ return 0; /* error */
+ }
+ localTime = *expandedTime;
+
+ /* adjust */
+ localTime.tm_year += 1900;
+ localTime.tm_mon += 1;
+
+ SetTime(&localTime, after + afterSz);
+ afterSz += ASN_GEN_TIME_SZ;
+
+ /* headers and output */
+ seqSz = SetSequence(beforeSz + afterSz, output);
+ XMEMCPY(output + seqSz, before, beforeSz);
+ XMEMCPY(output + seqSz + beforeSz, after, afterSz);
+
+ return seqSz + beforeSz + afterSz;
+}
+
+
+/* ASN Encoded Name field */
+typedef struct EncodedName {
+ int nameLen; /* actual string value length */
+ int totalLen; /* total encoded length */
+ int type; /* type of name */
+ int used; /* are we actually using this one */
+ byte encoded[CTC_NAME_SIZE * 2]; /* encoding */
+} EncodedName;
+
+
+/* Get Which Name from index */
+static const char* GetOneName(CertName* name, int idx)
+{
+ switch (idx) {
+ case 0:
+ return name->country;
+
+ case 1:
+ return name->state;
+
+ case 2:
+ return name->locality;
+
+ case 3:
+ return name->sur;
+
+ case 4:
+ return name->org;
+
+ case 5:
+ return name->unit;
+
+ case 6:
+ return name->commonName;
+
+ case 7:
+ return name->email;
+
+ default:
+ return 0;
+ }
+}
+
+
+/* Get Which Name Encoding from index */
+static char GetNameType(CertName* name, int idx)
+{
+ switch (idx) {
+ case 0:
+ return name->countryEnc;
+
+ case 1:
+ return name->stateEnc;
+
+ case 2:
+ return name->localityEnc;
+
+ case 3:
+ return name->surEnc;
+
+ case 4:
+ return name->orgEnc;
+
+ case 5:
+ return name->unitEnc;
+
+ case 6:
+ return name->commonNameEnc;
+
+ default:
+ return 0;
+ }
+}
+
+
+/* Get ASN Name from index */
+static byte GetNameId(int idx)
+{
+ switch (idx) {
+ case 0:
+ return ASN_COUNTRY_NAME;
+
+ case 1:
+ return ASN_STATE_NAME;
+
+ case 2:
+ return ASN_LOCALITY_NAME;
+
+ case 3:
+ return ASN_SUR_NAME;
+
+ case 4:
+ return ASN_ORG_NAME;
+
+ case 5:
+ return ASN_ORGUNIT_NAME;
+
+ case 6:
+ return ASN_COMMON_NAME;
+
+ case 7:
+ return ASN_EMAIL_NAME;
+
+ default:
+ return 0;
+ }
+}
+
+/*
+ Extensions ::= SEQUENCE OF Extension
+
+ Extension ::= SEQUENCE {
+ extnId OBJECT IDENTIFIER,
+ critical BOOLEAN DEFAULT FALSE,
+ extnValue OCTET STRING }
+ */
+
+/* encode all extensions, return total bytes written */
+static int SetExtensions(byte* out, word32 outSz, int *IdxInOut,
+ const byte* ext, int extSz)
+{
+ if (out == NULL || IdxInOut == NULL || ext == NULL)
+ return BAD_FUNC_ARG;
+
+ if (outSz < (word32)(*IdxInOut+extSz))
+ return BUFFER_E;
+
+ XMEMCPY(&out[*IdxInOut], ext, extSz); /* extensions */
+ *IdxInOut += extSz;
+
+ return *IdxInOut;
+}
+
+/* encode extensions header, return total bytes written */
+static int SetExtensionsHeader(byte* out, word32 outSz, int extSz)
+{
+ byte sequence[MAX_SEQ_SZ];
+ byte len[MAX_LENGTH_SZ];
+ int seqSz, lenSz, idx = 0;
+
+ if (out == NULL)
+ return BAD_FUNC_ARG;
+
+ if (outSz < 3)
+ return BUFFER_E;
+
+ seqSz = SetSequence(extSz, sequence);
+
+ /* encode extensions length provided */
+ lenSz = SetLength(extSz+seqSz, len);
+
+ if (outSz < (word32)(lenSz+seqSz+1))
+ return BUFFER_E;
+
+ out[idx++] = ASN_EXTENSIONS; /* extensions id */
+ XMEMCPY(&out[idx], len, lenSz); /* length */
+ idx += lenSz;
+
+ XMEMCPY(&out[idx], sequence, seqSz); /* sequence */
+ idx += seqSz;
+
+ return idx;
+}
+
+
+/* encode CA basic constraint true, return total bytes written */
+static int SetCa(byte* out, word32 outSz)
+{
+ static const byte ca[] = { 0x30, 0x0c, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x04,
+ 0x05, 0x30, 0x03, 0x01, 0x01, 0xff };
+
+ if (out == NULL)
+ return BAD_FUNC_ARG;
+
+ if (outSz < sizeof(ca))
+ return BUFFER_E;
+
+ XMEMCPY(out, ca, sizeof(ca));
+
+ return (int)sizeof(ca);
+}
+
+
+#ifdef WOLFSSL_CERT_EXT
+/* encode OID and associated value, return total bytes written */
+static int SetOidValue(byte* out, word32 outSz, const byte *oid, word32 oidSz,
+ byte *in, word32 inSz)
+{
+ int idx = 0;
+
+ if (out == NULL || oid == NULL || in == NULL)
+ return BAD_FUNC_ARG;
+
+ if (outSz < 3)
+ return BUFFER_E;
+
+ /* sequence, + 1 => byte to put value size */
+ idx = SetSequence(inSz + oidSz + 1, out);
+
+ if ((idx + inSz + oidSz + 1) > outSz)
+ return BUFFER_E;
+
+ XMEMCPY(out+idx, oid, oidSz);
+ idx += oidSz;
+ out[idx++] = (byte)inSz;
+ XMEMCPY(out+idx, in, inSz);
+
+ return (idx+inSz);
+}
+
+/* encode Subject Key Identifier, return total bytes written
+ * RFC5280 : non-critical */
+static int SetSKID(byte* output, word32 outSz, const byte *input, word32 length)
+{
+ byte skid_len[1 + MAX_LENGTH_SZ];
+ byte skid_enc_len[MAX_LENGTH_SZ];
+ int idx = 0, skid_lenSz, skid_enc_lenSz;
+ static const byte skid_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04 };
+
+ if (output == NULL || input == NULL)
+ return BAD_FUNC_ARG;
+
+ /* Octet String header */
+ skid_lenSz = SetOctetString(length, skid_len);
+
+ /* length of encoded value */
+ skid_enc_lenSz = SetLength(length + skid_lenSz, skid_enc_len);
+
+ if (outSz < 3)
+ return BUFFER_E;
+
+ idx = SetSequence(length + sizeof(skid_oid) + skid_lenSz + skid_enc_lenSz,
+ output);
+
+ if ((length + sizeof(skid_oid) + skid_lenSz + skid_enc_lenSz) > outSz)
+ return BUFFER_E;
+
+ /* put oid */
+ XMEMCPY(output+idx, skid_oid, sizeof(skid_oid));
+ idx += sizeof(skid_oid);
+
+ /* put encoded len */
+ XMEMCPY(output+idx, skid_enc_len, skid_enc_lenSz);
+ idx += skid_enc_lenSz;
+
+ /* put octet header */
+ XMEMCPY(output+idx, skid_len, skid_lenSz);
+ idx += skid_lenSz;
+
+ /* put value */
+ XMEMCPY(output+idx, input, length);
+ idx += length;
+
+ return idx;
+}
+
+/* encode Authority Key Identifier, return total bytes written
+ * RFC5280 : non-critical */
+static int SetAKID(byte* output, word32 outSz,
+ byte *input, word32 length, void* heap)
+{
+ byte *enc_val;
+ int ret, enc_valSz;
+ static const byte akid_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04 };
+ static const byte akid_cs[] = { 0x80 };
+
+ if (output == NULL || input == NULL)
+ return BAD_FUNC_ARG;
+
+ enc_valSz = length + 3 + sizeof(akid_cs);
+ enc_val = (byte *)XMALLOC(enc_valSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (enc_val == NULL)
+ return MEMORY_E;
+
+ /* sequence for ContentSpec & value */
+ ret = SetOidValue(enc_val, enc_valSz, akid_cs, sizeof(akid_cs),
+ input, length);
+ if (ret > 0) {
+ enc_valSz = ret;
+
+ ret = SetOidValue(output, outSz, akid_oid, sizeof(akid_oid),
+ enc_val, enc_valSz);
+ }
+
+ XFREE(enc_val, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+}
+
+/* encode Key Usage, return total bytes written
+ * RFC5280 : critical */
+static int SetKeyUsage(byte* output, word32 outSz, word16 input)
+{
+ byte ku[5];
+ int idx;
+ static const byte keyusage_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x0f,
+ 0x01, 0x01, 0xff, 0x04};
+ if (output == NULL)
+ return BAD_FUNC_ARG;
+
+ idx = SetBitString16Bit(input, ku);
+ return SetOidValue(output, outSz, keyusage_oid, sizeof(keyusage_oid),
+ ku, idx);
+}
+
+static int SetOjectIdValue(byte* output, word32 outSz, int* idx,
+ const byte* oid, word32 oidSz)
+{
+ /* verify room */
+ if (*idx + 2 + oidSz >= outSz)
+ return ASN_PARSE_E;
+
+ *idx += SetObjectId(oidSz, &output[*idx]);
+ XMEMCPY(&output[*idx], oid, oidSz);
+ *idx += oidSz;
+
+ return 0;
+}
+
+/* encode Extended Key Usage (RFC 5280 4.2.1.12), return total bytes written */
+static int SetExtKeyUsage(Cert* cert, byte* output, word32 outSz, byte input)
+{
+ int idx = 0, oidListSz = 0, totalSz, ret = 0;
+ static const byte extkeyusage_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x25 };
+
+ if (output == NULL)
+ return BAD_FUNC_ARG;
+
+ /* Skip to OID List */
+ totalSz = 2 + sizeof(extkeyusage_oid) + 4;
+ idx = totalSz;
+
+ /* Build OID List */
+ /* If any set, then just use it */
+ if (input & EXTKEYUSE_ANY) {
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ extExtKeyUsageAnyOid, sizeof(extExtKeyUsageAnyOid));
+ }
+ else {
+ if (input & EXTKEYUSE_SERVER_AUTH)
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ extExtKeyUsageServerAuthOid, sizeof(extExtKeyUsageServerAuthOid));
+ if (input & EXTKEYUSE_CLIENT_AUTH)
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ extExtKeyUsageClientAuthOid, sizeof(extExtKeyUsageClientAuthOid));
+ if (input & EXTKEYUSE_CODESIGN)
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ extExtKeyUsageCodeSigningOid, sizeof(extExtKeyUsageCodeSigningOid));
+ if (input & EXTKEYUSE_EMAILPROT)
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ extExtKeyUsageEmailProtectOid, sizeof(extExtKeyUsageEmailProtectOid));
+ if (input & EXTKEYUSE_TIMESTAMP)
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ extExtKeyUsageTimestampOid, sizeof(extExtKeyUsageTimestampOid));
+ if (input & EXTKEYUSE_OCSP_SIGN)
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ extExtKeyUsageOcspSignOid, sizeof(extExtKeyUsageOcspSignOid));
+ #ifdef WOLFSSL_EKU_OID
+ /* iterate through OID values */
+ if (input & EXTKEYUSE_USER) {
+ int i, sz;
+ for (i = 0; i < CTC_MAX_EKU_NB; i++) {
+ sz = cert->extKeyUsageOIDSz[i];
+ if (sz > 0) {
+ ret |= SetOjectIdValue(output, outSz, &idx,
+ cert->extKeyUsageOID[i], sz);
+ }
+ }
+ }
+ #endif /* WOLFSSL_EKU_OID */
+ }
+ if (ret != 0)
+ return ASN_PARSE_E;
+
+ /* Calculate Sizes */
+ oidListSz = idx - totalSz;
+ totalSz = idx - 2; /* exclude first seq/len (2) */
+
+ /* 1. Seq + Total Len (2) */
+ idx = SetSequence(totalSz, output);
+
+ /* 2. Object ID (2) */
+ XMEMCPY(&output[idx], extkeyusage_oid, sizeof(extkeyusage_oid));
+ idx += sizeof(extkeyusage_oid);
+
+ /* 3. Octect String (2) */
+ idx += SetOctetString(totalSz - idx, &output[idx]);
+
+ /* 4. Seq + OidListLen (2) */
+ idx += SetSequence(oidListSz, &output[idx]);
+
+ /* 5. Oid List (already set in-place above) */
+ idx += oidListSz;
+
+ (void)cert;
+ return idx;
+}
+
+/* Encode OID string representation to ITU-T X.690 format */
+static int EncodePolicyOID(byte *out, word32 *outSz, const char *in, void* heap)
+{
+ word32 val, idx = 0, nb_val;
+ char *token, *str, *ptr;
+ word32 len;
+
+ if (out == NULL || outSz == NULL || *outSz < 2 || in == NULL)
+ return BAD_FUNC_ARG;
+
+ len = (word32)XSTRLEN(in);
+
+ str = (char *)XMALLOC(len+1, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (str == NULL)
+ return MEMORY_E;
+
+ XSTRNCPY(str, in, len);
+ str[len] = '\0';
+
+ nb_val = 0;
+
+ /* parse value, and set corresponding Policy OID value */
+ token = XSTRTOK(str, ".", &ptr);
+ while (token != NULL)
+ {
+ val = (word32)atoi(token);
+
+ if (nb_val == 0) {
+ if (val > 2) {
+ XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ASN_OBJECT_ID_E;
+ }
+
+ out[idx] = (byte)(40 * val);
+ }
+ else if (nb_val == 1) {
+ if (val > 127) {
+ XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ASN_OBJECT_ID_E;
+ }
+
+ if (idx > *outSz) {
+ XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return BUFFER_E;
+ }
+
+ out[idx++] += (byte)val;
+ }
+ else {
+ word32 tb = 0, x;
+ int i = 0;
+ byte oid[MAX_OID_SZ];
+
+ while (val >= 128) {
+ x = val % 128;
+ val /= 128;
+ oid[i++] = (byte) (((tb++) ? 0x80 : 0) | x);
+ }
+
+ if ((idx+(word32)i) > *outSz) {
+ XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return BUFFER_E;
+ }
+
+ oid[i] = (byte) (((tb++) ? 0x80 : 0) | val);
+
+ /* push value in the right order */
+ while (i >= 0)
+ out[idx++] = oid[i--];
+ }
+
+ token = XSTRTOK(NULL, ".", &ptr);
+ nb_val++;
+ }
+
+ *outSz = idx;
+
+ XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return 0;
+}
+
+/* encode Certificate Policies, return total bytes written
+ * each input value must be ITU-T X.690 formatted : a.b.c...
+ * input must be an array of values with a NULL terminated for the latest
+ * RFC5280 : non-critical */
+static int SetCertificatePolicies(byte *output,
+ word32 outputSz,
+ char input[MAX_CERTPOL_NB][MAX_CERTPOL_SZ],
+ word16 nb_certpol,
+ void* heap)
+{
+ byte oid[MAX_OID_SZ],
+ der_oid[MAX_CERTPOL_NB][MAX_OID_SZ],
+ out[MAX_CERTPOL_SZ];
+ word32 oidSz;
+ word32 outSz, i = 0, der_oidSz[MAX_CERTPOL_NB];
+ int ret;
+
+ static const byte certpol_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x20, 0x04 };
+ static const byte oid_oid[] = { 0x06 };
+
+ if (output == NULL || input == NULL || nb_certpol > MAX_CERTPOL_NB)
+ return BAD_FUNC_ARG;
+
+ for (i = 0; i < nb_certpol; i++) {
+ oidSz = sizeof(oid);
+ XMEMSET(oid, 0, oidSz);
+
+ ret = EncodePolicyOID(oid, &oidSz, input[i], heap);
+ if (ret != 0)
+ return ret;
+
+ /* compute sequence value for the oid */
+ ret = SetOidValue(der_oid[i], MAX_OID_SZ, oid_oid,
+ sizeof(oid_oid), oid, oidSz);
+ if (ret <= 0)
+ return ret;
+ else
+ der_oidSz[i] = (word32)ret;
+ }
+
+ /* concatenate oid, keep two byte for sequence/size of the created value */
+ for (i = 0, outSz = 2; i < nb_certpol; i++) {
+ XMEMCPY(out+outSz, der_oid[i], der_oidSz[i]);
+ outSz += der_oidSz[i];
+ }
+
+ /* add sequence */
+ ret = SetSequence(outSz-2, out);
+ if (ret <= 0)
+ return ret;
+
+ /* add Policy OID to compute final value */
+ return SetOidValue(output, outputSz, certpol_oid, sizeof(certpol_oid),
+ out, outSz);
+}
+#endif /* WOLFSSL_CERT_EXT */
+
+#ifdef WOLFSSL_ALT_NAMES
+/* encode Alternative Names, return total bytes written */
+static int SetAltNames(byte *out, word32 outSz, byte *input, word32 length)
+{
+ if (out == NULL || input == NULL)
+ return BAD_FUNC_ARG;
+
+ if (outSz < length)
+ return BUFFER_E;
+
+ /* Alternative Names come from certificate or computed by
+ * external function, so already encoded. Just copy value */
+ XMEMCPY(out, input, length);
+ return length;
+}
+#endif /* WOLFSL_ALT_NAMES */
+
+/* Encodes one attribute of the name (issuer/subject)
+ *
+ * name structure to hold result of encoding
+ * nameStr value to be encoded
+ * nameType type of encoding i.e CTC_UTF8
+ * type id of attribute i.e ASN_COMMON_NAME
+ *
+ * returns length on success
+ */
+static int wc_EncodeName(EncodedName* name, const char* nameStr, char nameType,
+ byte type)
+{
+ word32 idx = 0;
+
+ if (nameStr) {
+ /* bottom up */
+ byte firstLen[1 + MAX_LENGTH_SZ];
+ byte secondLen[MAX_LENGTH_SZ];
+ byte sequence[MAX_SEQ_SZ];
+ byte set[MAX_SET_SZ];
+
+ int strLen = (int)XSTRLEN(nameStr);
+ int thisLen = strLen;
+ int firstSz, secondSz, seqSz, setSz;
+
+ if (strLen == 0) { /* no user data for this item */
+ name->used = 0;
+ return 0;
+ }
+
+ /* Restrict country code size */
+ if (ASN_COUNTRY_NAME == type && strLen != CTC_COUNTRY_SIZE) {
+ return ASN_COUNTRY_SIZE_E;
+ }
+
+ secondSz = SetLength(strLen, secondLen);
+ thisLen += secondSz;
+ switch (type) {
+ case ASN_EMAIL_NAME: /* email */
+ thisLen += EMAIL_JOINT_LEN;
+ firstSz = EMAIL_JOINT_LEN;
+ break;
+
+ case ASN_DOMAIN_COMPONENT:
+ thisLen += PILOT_JOINT_LEN;
+ firstSz = PILOT_JOINT_LEN;
+ break;
+
+ default:
+ thisLen++; /* str type */
+ thisLen += JOINT_LEN;
+ firstSz = JOINT_LEN + 1;
+ }
+ thisLen++; /* id type */
+ firstSz = SetObjectId(firstSz, firstLen);
+ thisLen += firstSz;
+
+ seqSz = SetSequence(thisLen, sequence);
+ thisLen += seqSz;
+ setSz = SetSet(thisLen, set);
+ thisLen += setSz;
+
+ if (thisLen > (int)sizeof(name->encoded)) {
+ return BUFFER_E;
+ }
+
+ /* store it */
+ idx = 0;
+ /* set */
+ XMEMCPY(name->encoded, set, setSz);
+ idx += setSz;
+ /* seq */
+ XMEMCPY(name->encoded + idx, sequence, seqSz);
+ idx += seqSz;
+ /* asn object id */
+ XMEMCPY(name->encoded + idx, firstLen, firstSz);
+ idx += firstSz;
+ switch (type) {
+ case ASN_EMAIL_NAME:
+ {
+ const byte EMAIL_OID[] = { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+ 0x01, 0x09, 0x01, 0x16 };
+ /* email joint id */
+ XMEMCPY(name->encoded + idx, EMAIL_OID, sizeof(EMAIL_OID));
+ idx += (int)sizeof(EMAIL_OID);
+ }
+ break;
+
+ case ASN_DOMAIN_COMPONENT:
+ {
+ const byte PILOT_OID[] = { 0x09, 0x92, 0x26, 0x89,
+ 0x93, 0xF2, 0x2C, 0x64, 0x01
+ };
+
+ XMEMCPY(name->encoded + idx, PILOT_OID,
+ sizeof(PILOT_OID));
+ idx += (int)sizeof(PILOT_OID);
+ /* id type */
+ name->encoded[idx++] = type;
+ /* str type */
+ name->encoded[idx++] = nameType;
+ }
+ break;
+
+ default:
+ name->encoded[idx++] = 0x55;
+ name->encoded[idx++] = 0x04;
+ /* id type */
+ name->encoded[idx++] = type;
+ /* str type */
+ name->encoded[idx++] = nameType;
+ }
+ /* second length */
+ XMEMCPY(name->encoded + idx, secondLen, secondSz);
+ idx += secondSz;
+ /* str value */
+ XMEMCPY(name->encoded + idx, nameStr, strLen);
+ idx += strLen;
+
+ name->type = type;
+ name->totalLen = idx;
+ name->used = 1;
+ }
+ else
+ name->used = 0;
+
+ return idx;
+}
+
+/* encode CertName into output, return total bytes written */
+int SetName(byte* output, word32 outputSz, CertName* name)
+{
+ int totalBytes = 0, i, idx;
+#ifdef WOLFSSL_SMALL_STACK
+ EncodedName* names = NULL;
+#else
+ EncodedName names[NAME_ENTRIES];
+#endif
+#ifdef WOLFSSL_MULTI_ATTRIB
+ EncodedName addNames[CTC_MAX_ATTRIB];
+ int j, type;
+#endif
+
+ if (output == NULL || name == NULL)
+ return BAD_FUNC_ARG;
+
+ if (outputSz < 3)
+ return BUFFER_E;
+
+#ifdef WOLFSSL_SMALL_STACK
+ names = (EncodedName*)XMALLOC(sizeof(EncodedName) * NAME_ENTRIES, NULL,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (names == NULL)
+ return MEMORY_E;
+#endif
+
+ for (i = 0; i < NAME_ENTRIES; i++) {
+ int ret;
+ const char* nameStr = GetOneName(name, i);
+
+ ret = wc_EncodeName(&names[i], nameStr, GetNameType(name, i),
+ GetNameId(i));
+ if (ret < 0) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return BUFFER_E;
+ }
+ totalBytes += ret;
+ }
+#ifdef WOLFSSL_MULTI_ATTRIB
+ for (i = 0; i < CTC_MAX_ATTRIB; i++) {
+ if (name->name[i].sz > 0) {
+ int ret;
+ ret = wc_EncodeName(&addNames[i], name->name[i].value,
+ name->name[i].type, name->name[i].id);
+ if (ret < 0) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return BUFFER_E;
+ }
+ totalBytes += ret;
+ }
+ else {
+ addNames[i].used = 0;
+ }
+ }
+#endif /* WOLFSSL_MULTI_ATTRIB */
+
+ /* header */
+ idx = SetSequence(totalBytes, output);
+ totalBytes += idx;
+ if (totalBytes > ASN_NAME_MAX) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BUFFER_E;
+ }
+
+ for (i = 0; i < NAME_ENTRIES; i++) {
+ #ifdef WOLFSSL_MULTI_ATTRIB
+ type = GetNameId(i);
+
+ /* list all DC values before OUs */
+ if (type == ASN_ORGUNIT_NAME) {
+ type = ASN_DOMAIN_COMPONENT;
+ for (j = 0; j < CTC_MAX_ATTRIB; j++) {
+ if (name->name[j].sz > 0 && type == name->name[j].id) {
+ if (outputSz < (word32)(idx+addNames[j].totalLen)) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return BUFFER_E;
+ }
+
+ XMEMCPY(output + idx, addNames[j].encoded,
+ addNames[j].totalLen);
+ idx += addNames[j].totalLen;
+ }
+ }
+ type = ASN_ORGUNIT_NAME;
+ }
+
+ /* write all similar types to the buffer */
+ for (j = 0; j < CTC_MAX_ATTRIB; j++) {
+ if (name->name[j].sz > 0 && type == name->name[j].id) {
+ if (outputSz < (word32)(idx+addNames[j].totalLen)) {
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return BUFFER_E;
+ }
+
+ XMEMCPY(output + idx, addNames[j].encoded,
+ addNames[j].totalLen);
+ idx += addNames[j].totalLen;
+ }
+ }
+ #endif /* WOLFSSL_MULTI_ATTRIB */
+
+ if (names[i].used) {
+ if (outputSz < (word32)(idx+names[i].totalLen)) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BUFFER_E;
+ }
+
+ XMEMCPY(output + idx, names[i].encoded, names[i].totalLen);
+ idx += names[i].totalLen;
+ }
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return totalBytes;
+}
+
+/* encode info from cert into DER encoded format */
+static int EncodeCert(Cert* cert, DerCert* der, RsaKey* rsaKey, ecc_key* eccKey,
+ WC_RNG* rng, const byte* ntruKey, word16 ntruSz,
+ ed25519_key* ed25519Key)
+{
+ int ret;
+
+ if (cert == NULL || der == NULL || rng == NULL)
+ return BAD_FUNC_ARG;
+
+ /* make sure at least one key type is provided */
+ if (rsaKey == NULL && eccKey == NULL && ed25519Key == NULL && ntruKey == NULL)
+ return PUBLIC_KEY_E;
+
+ /* init */
+ XMEMSET(der, 0, sizeof(DerCert));
+
+ /* version */
+ der->versionSz = SetMyVersion(cert->version, der->version, TRUE);
+
+ /* serial number (must be positive) */
+ if (cert->serialSz == 0) {
+ /* generate random serial */
+ cert->serialSz = CTC_SERIAL_SIZE;
+ ret = wc_RNG_GenerateBlock(rng, cert->serial, cert->serialSz);
+ if (ret != 0)
+ return ret;
+ }
+ der->serialSz = SetSerialNumber(cert->serial, cert->serialSz, der->serial,
+ CTC_SERIAL_SIZE);
+ if (der->serialSz < 0)
+ return der->serialSz;
+
+ /* signature algo */
+ der->sigAlgoSz = SetAlgoID(cert->sigType, der->sigAlgo, oidSigType, 0);
+ if (der->sigAlgoSz <= 0)
+ return ALGO_ID_E;
+
+ /* public key */
+#ifndef NO_RSA
+ if (cert->keyType == RSA_KEY) {
+ if (rsaKey == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
+ sizeof(der->publicKey), 1);
+ }
+#endif
+
+#ifdef HAVE_ECC
+ if (cert->keyType == ECC_KEY) {
+ if (eccKey == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
+ }
+#endif
+
+#ifdef HAVE_ED25519
+ if (cert->keyType == ED25519_KEY) {
+ if (ed25519Key == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetEd25519PublicKey(der->publicKey, ed25519Key, 1);
+ }
+#endif
+
+#ifdef HAVE_NTRU
+ if (cert->keyType == NTRU_KEY) {
+ word32 rc;
+ word16 encodedSz;
+
+ if (ntruKey == NULL)
+ return PUBLIC_KEY_E;
+
+ rc = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(ntruSz,
+ ntruKey, &encodedSz, NULL);
+ if (rc != NTRU_OK)
+ return PUBLIC_KEY_E;
+ if (encodedSz > MAX_PUBLIC_KEY_SZ)
+ return PUBLIC_KEY_E;
+
+ rc = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(ntruSz,
+ ntruKey, &encodedSz, der->publicKey);
+ if (rc != NTRU_OK)
+ return PUBLIC_KEY_E;
+
+ der->publicKeySz = encodedSz;
+ }
+#else
+ (void)ntruSz;
+#endif /* HAVE_NTRU */
+
+ if (der->publicKeySz <= 0)
+ return PUBLIC_KEY_E;
+
+ der->validitySz = 0;
+#ifdef WOLFSSL_ALT_NAMES
+ /* date validity copy ? */
+ if (cert->beforeDateSz && cert->afterDateSz) {
+ der->validitySz = CopyValidity(der->validity, cert);
+ if (der->validitySz <= 0)
+ return DATE_E;
+ }
+#endif
+
+ /* date validity */
+ if (der->validitySz == 0) {
+ der->validitySz = SetValidity(der->validity, cert->daysValid);
+ if (der->validitySz <= 0)
+ return DATE_E;
+ }
+
+ /* subject name */
+ der->subjectSz = SetName(der->subject, sizeof(der->subject), &cert->subject);
+ if (der->subjectSz <= 0)
+ return SUBJECT_E;
+
+ /* issuer name */
+ der->issuerSz = SetName(der->issuer, sizeof(der->issuer), cert->selfSigned ?
+ &cert->subject : &cert->issuer);
+ if (der->issuerSz <= 0)
+ return ISSUER_E;
+
+ /* set the extensions */
+ der->extensionsSz = 0;
+
+ /* CA */
+ if (cert->isCA) {
+ der->caSz = SetCa(der->ca, sizeof(der->ca));
+ if (der->caSz <= 0)
+ return CA_TRUE_E;
+
+ der->extensionsSz += der->caSz;
+ }
+ else
+ der->caSz = 0;
+
+#ifdef WOLFSSL_ALT_NAMES
+ /* Alternative Name */
+ if (cert->altNamesSz) {
+ der->altNamesSz = SetAltNames(der->altNames, sizeof(der->altNames),
+ cert->altNames, cert->altNamesSz);
+ if (der->altNamesSz <= 0)
+ return ALT_NAME_E;
+
+ der->extensionsSz += der->altNamesSz;
+ }
+ else
+ der->altNamesSz = 0;
+#endif
+
+#ifdef WOLFSSL_CERT_EXT
+ /* SKID */
+ if (cert->skidSz) {
+ /* check the provided SKID size */
+ if (cert->skidSz > (int)min(CTC_MAX_SKID_SIZE, sizeof(der->skid)))
+ return SKID_E;
+
+ /* Note: different skid buffers sizes for der (MAX_KID_SZ) and
+ cert (CTC_MAX_SKID_SIZE). */
+ der->skidSz = SetSKID(der->skid, sizeof(der->skid),
+ cert->skid, cert->skidSz);
+ if (der->skidSz <= 0)
+ return SKID_E;
+
+ der->extensionsSz += der->skidSz;
+ }
+ else
+ der->skidSz = 0;
+
+ /* AKID */
+ if (cert->akidSz) {
+ /* check the provided AKID size */
+ if (cert->akidSz > (int)min(CTC_MAX_AKID_SIZE, sizeof(der->akid)))
+ return AKID_E;
+
+ der->akidSz = SetAKID(der->akid, sizeof(der->akid),
+ cert->akid, cert->akidSz, cert->heap);
+ if (der->akidSz <= 0)
+ return AKID_E;
+
+ der->extensionsSz += der->akidSz;
+ }
+ else
+ der->akidSz = 0;
+
+ /* Key Usage */
+ if (cert->keyUsage != 0){
+ der->keyUsageSz = SetKeyUsage(der->keyUsage, sizeof(der->keyUsage),
+ cert->keyUsage);
+ if (der->keyUsageSz <= 0)
+ return KEYUSAGE_E;
+
+ der->extensionsSz += der->keyUsageSz;
+ }
+ else
+ der->keyUsageSz = 0;
+
+ /* Extended Key Usage */
+ if (cert->extKeyUsage != 0){
+ der->extKeyUsageSz = SetExtKeyUsage(cert, der->extKeyUsage,
+ sizeof(der->extKeyUsage), cert->extKeyUsage);
+ if (der->extKeyUsageSz <= 0)
+ return EXTKEYUSAGE_E;
+
+ der->extensionsSz += der->extKeyUsageSz;
+ }
+ else
+ der->extKeyUsageSz = 0;
+
+ /* Certificate Policies */
+ if (cert->certPoliciesNb != 0) {
+ der->certPoliciesSz = SetCertificatePolicies(der->certPolicies,
+ sizeof(der->certPolicies),
+ cert->certPolicies,
+ cert->certPoliciesNb,
+ cert->heap);
+ if (der->certPoliciesSz <= 0)
+ return CERTPOLICIES_E;
+
+ der->extensionsSz += der->certPoliciesSz;
+ }
+ else
+ der->certPoliciesSz = 0;
+#endif /* WOLFSSL_CERT_EXT */
+
+ /* put extensions */
+ if (der->extensionsSz > 0) {
+
+ /* put the start of extensions sequence (ID, Size) */
+ der->extensionsSz = SetExtensionsHeader(der->extensions,
+ sizeof(der->extensions),
+ der->extensionsSz);
+ if (der->extensionsSz <= 0)
+ return EXTENSIONS_E;
+
+ /* put CA */
+ if (der->caSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->ca, der->caSz);
+ if (ret == 0)
+ return EXTENSIONS_E;
+ }
+
+#ifdef WOLFSSL_ALT_NAMES
+ /* put Alternative Names */
+ if (der->altNamesSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->altNames, der->altNamesSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+#endif
+
+#ifdef WOLFSSL_CERT_EXT
+ /* put SKID */
+ if (der->skidSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->skid, der->skidSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+ /* put AKID */
+ if (der->akidSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->akid, der->akidSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+ /* put KeyUsage */
+ if (der->keyUsageSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->keyUsage, der->keyUsageSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+ /* put ExtendedKeyUsage */
+ if (der->extKeyUsageSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->extKeyUsage, der->extKeyUsageSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+ /* put Certificate Policies */
+ if (der->certPoliciesSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->certPolicies, der->certPoliciesSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+#endif /* WOLFSSL_CERT_EXT */
+ }
+
+ der->total = der->versionSz + der->serialSz + der->sigAlgoSz +
+ der->publicKeySz + der->validitySz + der->subjectSz + der->issuerSz +
+ der->extensionsSz;
+
+ return 0;
+}
+
+
+/* write DER encoded cert to buffer, size already checked */
+static int WriteCertBody(DerCert* der, byte* buffer)
+{
+ int idx;
+
+ /* signed part header */
+ idx = SetSequence(der->total, buffer);
+ /* version */
+ XMEMCPY(buffer + idx, der->version, der->versionSz);
+ idx += der->versionSz;
+ /* serial */
+ XMEMCPY(buffer + idx, der->serial, der->serialSz);
+ idx += der->serialSz;
+ /* sig algo */
+ XMEMCPY(buffer + idx, der->sigAlgo, der->sigAlgoSz);
+ idx += der->sigAlgoSz;
+ /* issuer */
+ XMEMCPY(buffer + idx, der->issuer, der->issuerSz);
+ idx += der->issuerSz;
+ /* validity */
+ XMEMCPY(buffer + idx, der->validity, der->validitySz);
+ idx += der->validitySz;
+ /* subject */
+ XMEMCPY(buffer + idx, der->subject, der->subjectSz);
+ idx += der->subjectSz;
+ /* public key */
+ XMEMCPY(buffer + idx, der->publicKey, der->publicKeySz);
+ idx += der->publicKeySz;
+ if (der->extensionsSz) {
+ /* extensions */
+ XMEMCPY(buffer + idx, der->extensions, min(der->extensionsSz,
+ (int)sizeof(der->extensions)));
+ idx += der->extensionsSz;
+ }
+
+ return idx;
+}
+
+
+/* Make RSA signature from buffer (sz), write to sig (sigSz) */
+static int MakeSignature(CertSignCtx* certSignCtx, const byte* buffer, int sz,
+ byte* sig, int sigSz, RsaKey* rsaKey, ecc_key* eccKey,
+ ed25519_key* ed25519Key, WC_RNG* rng, int sigAlgoType, void* heap)
+{
+ int digestSz = 0, typeH = 0, ret = 0;
+
+ (void)digestSz;
+ (void)typeH;
+ (void)buffer;
+ (void)sz;
+ (void)sig;
+ (void)sigSz;
+ (void)rsaKey;
+ (void)eccKey;
+ (void)ed25519Key;
+ (void)rng;
+
+ switch (certSignCtx->state) {
+ case CERTSIGN_STATE_BEGIN:
+ case CERTSIGN_STATE_DIGEST:
+
+ certSignCtx->state = CERTSIGN_STATE_DIGEST;
+ certSignCtx->digest = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (certSignCtx->digest == NULL) {
+ ret = MEMORY_E; goto exit_ms;
+ }
+
+ ret = HashForSignature(buffer, sz, sigAlgoType, certSignCtx->digest,
+ &typeH, &digestSz, 0);
+ /* set next state, since WC_PENDING rentry for these are not "call again" */
+ certSignCtx->state = CERTSIGN_STATE_ENCODE;
+ if (ret != 0) {
+ goto exit_ms;
+ }
+ FALL_THROUGH;
+
+ case CERTSIGN_STATE_ENCODE:
+ #ifndef NO_RSA
+ if (rsaKey) {
+ certSignCtx->encSig = (byte*)XMALLOC(MAX_DER_DIGEST_SZ, heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (certSignCtx->encSig == NULL) {
+ ret = MEMORY_E; goto exit_ms;
+ }
+
+ /* signature */
+ certSignCtx->encSigSz = wc_EncodeSignature(certSignCtx->encSig,
+ certSignCtx->digest, digestSz, typeH);
+ }
+ #endif /* !NO_RSA */
+ FALL_THROUGH;
+
+ case CERTSIGN_STATE_DO:
+ certSignCtx->state = CERTSIGN_STATE_DO;
+ ret = ALGO_ID_E; /* default to error */
+
+ #ifndef NO_RSA
+ if (rsaKey) {
+ /* signature */
+ ret = wc_RsaSSL_Sign(certSignCtx->encSig, certSignCtx->encSigSz,
+ sig, sigSz, rsaKey, rng);
+ }
+ #endif /* !NO_RSA */
+
+ #ifdef HAVE_ECC
+ if (!rsaKey && eccKey) {
+ word32 outSz = sigSz;
+
+ ret = wc_ecc_sign_hash(certSignCtx->digest, digestSz,
+ sig, &outSz, rng, eccKey);
+ if (ret == 0)
+ ret = outSz;
+ }
+ #endif /* HAVE_ECC */
+
+ #ifdef HAVE_ED25519
+ if (!rsaKey && !eccKey && ed25519Key) {
+ word32 outSz = sigSz;
+
+ ret = wc_ed25519_sign_msg(buffer, sz, sig, &outSz, ed25519Key);
+ if (ret == 0)
+ ret = outSz;
+ }
+ #endif /* HAVE_ECC */
+ break;
+ }
+
+exit_ms:
+
+ if (ret == WC_PENDING_E) {
+ return ret;
+ }
+
+#ifndef NO_RSA
+ if (rsaKey) {
+ XFREE(certSignCtx->encSig, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ }
+#endif /* !NO_RSA */
+
+ XFREE(certSignCtx->digest, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ certSignCtx->digest = NULL;
+
+ /* reset state */
+ certSignCtx->state = CERTSIGN_STATE_BEGIN;
+
+ return ret;
+}
+
+
+/* add signature to end of buffer, size of buffer assumed checked, return
+ new length */
+static int AddSignature(byte* buffer, int bodySz, const byte* sig, int sigSz,
+ int sigAlgoType)
+{
+ byte seq[MAX_SEQ_SZ];
+ int idx = bodySz, seqSz;
+
+ /* algo */
+ idx += SetAlgoID(sigAlgoType, buffer + idx, oidSigType, 0);
+ /* bit string */
+ idx += SetBitString(sigSz, 0, buffer + idx);
+ /* signature */
+ XMEMCPY(buffer + idx, sig, sigSz);
+ idx += sigSz;
+
+ /* make room for overall header */
+ seqSz = SetSequence(idx, seq);
+ XMEMMOVE(buffer + seqSz, buffer, idx);
+ XMEMCPY(buffer, seq, seqSz);
+
+ return idx + seqSz;
+}
+
+
+/* Make an x509 Certificate v3 any key type from cert input, write to buffer */
+static int MakeAnyCert(Cert* cert, byte* derBuffer, word32 derSz,
+ RsaKey* rsaKey, ecc_key* eccKey, WC_RNG* rng,
+ const byte* ntruKey, word16 ntruSz,
+ ed25519_key* ed25519Key)
+{
+ int ret;
+#ifdef WOLFSSL_SMALL_STACK
+ DerCert* der;
+#else
+ DerCert der[1];
+#endif
+
+ cert->keyType = eccKey ? ECC_KEY : (rsaKey ? RSA_KEY :
+ (ed25519Key ? ED25519_KEY : NTRU_KEY));
+
+#ifdef WOLFSSL_SMALL_STACK
+ der = (DerCert*)XMALLOC(sizeof(DerCert), cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (der == NULL)
+ return MEMORY_E;
+#endif
+
+ ret = EncodeCert(cert, der, rsaKey, eccKey, rng, ntruKey, ntruSz,
+ ed25519Key);
+ if (ret == 0) {
+ if (der->total + MAX_SEQ_SZ * 2 > (int)derSz)
+ ret = BUFFER_E;
+ else
+ ret = cert->bodySz = WriteCertBody(der, derBuffer);
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(der, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret;
+}
+
+
+/* Make an x509 Certificate v3 RSA or ECC from cert input, write to buffer */
+int wc_MakeCert_ex(Cert* cert, byte* derBuffer, word32 derSz, int keyType,
+ void* key, WC_RNG* rng)
+{
+ RsaKey* rsaKey = NULL;
+ ecc_key* eccKey = NULL;
+ ed25519_key* ed25519Key = NULL;
+
+ if (keyType == RSA_TYPE)
+ rsaKey = (RsaKey*)key;
+ else if (keyType == ECC_TYPE)
+ eccKey = (ecc_key*)key;
+ else if (keyType == ED25519_TYPE)
+ ed25519Key = (ed25519_key*)key;
+
+ return MakeAnyCert(cert, derBuffer, derSz, rsaKey, eccKey, rng, NULL, 0,
+ ed25519Key);
+}
+/* Make an x509 Certificate v3 RSA or ECC from cert input, write to buffer */
+int wc_MakeCert(Cert* cert, byte* derBuffer, word32 derSz, RsaKey* rsaKey,
+ ecc_key* eccKey, WC_RNG* rng)
+{
+ return MakeAnyCert(cert, derBuffer, derSz, rsaKey, eccKey, rng, NULL, 0,
+ NULL);
+}
+
+
+#ifdef HAVE_NTRU
+
+int wc_MakeNtruCert(Cert* cert, byte* derBuffer, word32 derSz,
+ const byte* ntruKey, word16 keySz, WC_RNG* rng)
+{
+ return MakeAnyCert(cert, derBuffer, derSz, NULL, NULL, rng, ntruKey, keySz, NULL);
+}
+
+#endif /* HAVE_NTRU */
+
+
+#ifdef WOLFSSL_CERT_REQ
+
+static int SetReqAttrib(byte* output, char* pw, int extSz)
+{
+ static const byte cpOid[] =
+ { ASN_OBJECT_ID, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
+ 0x09, 0x07 };
+ static const byte erOid[] =
+ { ASN_OBJECT_ID, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
+ 0x09, 0x0e };
+
+ int sz = 0; /* overall size */
+ int cpSz = 0; /* Challenge Password section size */
+ int cpSeqSz = 0;
+ int cpSetSz = 0;
+ int cpStrSz = 0;
+ int pwSz = 0;
+ int erSz = 0; /* Extension Request section size */
+ int erSeqSz = 0;
+ int erSetSz = 0;
+ byte cpSeq[MAX_SEQ_SZ];
+ byte cpSet[MAX_SET_SZ];
+ byte cpStr[MAX_PRSTR_SZ];
+ byte erSeq[MAX_SEQ_SZ];
+ byte erSet[MAX_SET_SZ];
+
+ output[0] = 0xa0;
+ sz++;
+
+ if (pw && pw[0]) {
+ pwSz = (int)XSTRLEN(pw);
+ cpStrSz = SetUTF8String(pwSz, cpStr);
+ cpSetSz = SetSet(cpStrSz + pwSz, cpSet);
+ cpSeqSz = SetSequence(sizeof(cpOid) + cpSetSz + cpStrSz + pwSz, cpSeq);
+ cpSz = cpSeqSz + sizeof(cpOid) + cpSetSz + cpStrSz + pwSz;
+ }
+
+ if (extSz) {
+ erSetSz = SetSet(extSz, erSet);
+ erSeqSz = SetSequence(erSetSz + sizeof(erOid) + extSz, erSeq);
+ erSz = extSz + erSetSz + erSeqSz + sizeof(erOid);
+ }
+
+ /* Put the pieces together. */
+ sz += SetLength(cpSz + erSz, &output[sz]);
+
+ if (cpSz) {
+ XMEMCPY(&output[sz], cpSeq, cpSeqSz);
+ sz += cpSeqSz;
+ XMEMCPY(&output[sz], cpOid, sizeof(cpOid));
+ sz += sizeof(cpOid);
+ XMEMCPY(&output[sz], cpSet, cpSetSz);
+ sz += cpSetSz;
+ XMEMCPY(&output[sz], cpStr, cpStrSz);
+ sz += cpStrSz;
+ XMEMCPY(&output[sz], pw, pwSz);
+ sz += pwSz;
+ }
+
+ if (erSz) {
+ XMEMCPY(&output[sz], erSeq, erSeqSz);
+ sz += erSeqSz;
+ XMEMCPY(&output[sz], erOid, sizeof(erOid));
+ sz += sizeof(erOid);
+ XMEMCPY(&output[sz], erSet, erSetSz);
+ sz += erSetSz;
+ /* The actual extension data will be tacked onto the output later. */
+ }
+
+ return sz;
+}
+
+
+/* encode info from cert into DER encoded format */
+static int EncodeCertReq(Cert* cert, DerCert* der, RsaKey* rsaKey,
+ ecc_key* eccKey, ed25519_key* ed25519Key)
+{
+ (void)eccKey;
+ (void)ed25519Key;
+
+ if (cert == NULL || der == NULL)
+ return BAD_FUNC_ARG;
+
+ if (rsaKey == NULL && eccKey == NULL && ed25519Key == NULL)
+ return PUBLIC_KEY_E;
+
+ /* init */
+ XMEMSET(der, 0, sizeof(DerCert));
+
+ /* version */
+ der->versionSz = SetMyVersion(cert->version, der->version, FALSE);
+
+ /* subject name */
+ der->subjectSz = SetName(der->subject, sizeof(der->subject), &cert->subject);
+ if (der->subjectSz <= 0)
+ return SUBJECT_E;
+
+ /* public key */
+#ifndef NO_RSA
+ if (cert->keyType == RSA_KEY) {
+ if (rsaKey == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
+ sizeof(der->publicKey), 1);
+ }
+#endif
+
+#ifdef HAVE_ECC
+ if (cert->keyType == ECC_KEY) {
+ der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
+ }
+#endif
+
+#ifdef HAVE_ED25519
+ if (cert->keyType == ED25519_KEY) {
+ if (ed25519Key == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetEd25519PublicKey(der->publicKey, ed25519Key, 1);
+ }
+#endif
+
+ if (der->publicKeySz <= 0)
+ return PUBLIC_KEY_E;
+
+ /* set the extensions */
+ der->extensionsSz = 0;
+
+ /* CA */
+ if (cert->isCA) {
+ der->caSz = SetCa(der->ca, sizeof(der->ca));
+ if (der->caSz <= 0)
+ return CA_TRUE_E;
+
+ der->extensionsSz += der->caSz;
+ }
+ else
+ der->caSz = 0;
+
+#ifdef WOLFSSL_CERT_EXT
+ /* SKID */
+ if (cert->skidSz) {
+ /* check the provided SKID size */
+ if (cert->skidSz > (int)min(CTC_MAX_SKID_SIZE, sizeof(der->skid)))
+ return SKID_E;
+
+ der->skidSz = SetSKID(der->skid, sizeof(der->skid),
+ cert->skid, cert->skidSz);
+ if (der->skidSz <= 0)
+ return SKID_E;
+
+ der->extensionsSz += der->skidSz;
+ }
+ else
+ der->skidSz = 0;
+
+ /* Key Usage */
+ if (cert->keyUsage != 0){
+ der->keyUsageSz = SetKeyUsage(der->keyUsage, sizeof(der->keyUsage),
+ cert->keyUsage);
+ if (der->keyUsageSz <= 0)
+ return KEYUSAGE_E;
+
+ der->extensionsSz += der->keyUsageSz;
+ }
+ else
+ der->keyUsageSz = 0;
+
+ /* Extended Key Usage */
+ if (cert->extKeyUsage != 0){
+ der->extKeyUsageSz = SetExtKeyUsage(cert, der->extKeyUsage,
+ sizeof(der->extKeyUsage), cert->extKeyUsage);
+ if (der->extKeyUsageSz <= 0)
+ return EXTKEYUSAGE_E;
+
+ der->extensionsSz += der->extKeyUsageSz;
+ }
+ else
+ der->extKeyUsageSz = 0;
+
+#endif /* WOLFSSL_CERT_EXT */
+
+ /* put extensions */
+ if (der->extensionsSz > 0) {
+ int ret;
+
+ /* put the start of sequence (ID, Size) */
+ der->extensionsSz = SetSequence(der->extensionsSz, der->extensions);
+ if (der->extensionsSz <= 0)
+ return EXTENSIONS_E;
+
+ /* put CA */
+ if (der->caSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->ca, der->caSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+#ifdef WOLFSSL_CERT_EXT
+ /* put SKID */
+ if (der->skidSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->skid, der->skidSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+ /* put AKID */
+ if (der->akidSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->akid, der->akidSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+ /* put KeyUsage */
+ if (der->keyUsageSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->keyUsage, der->keyUsageSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+ /* put ExtendedKeyUsage */
+ if (der->extKeyUsageSz) {
+ ret = SetExtensions(der->extensions, sizeof(der->extensions),
+ &der->extensionsSz,
+ der->extKeyUsage, der->extKeyUsageSz);
+ if (ret <= 0)
+ return EXTENSIONS_E;
+ }
+
+#endif /* WOLFSSL_CERT_EXT */
+ }
+
+ der->attribSz = SetReqAttrib(der->attrib,
+ cert->challengePw, der->extensionsSz);
+ if (der->attribSz <= 0)
+ return REQ_ATTRIBUTE_E;
+
+ der->total = der->versionSz + der->subjectSz + der->publicKeySz +
+ der->extensionsSz + der->attribSz;
+
+ return 0;
+}
+
+
+/* write DER encoded cert req to buffer, size already checked */
+static int WriteCertReqBody(DerCert* der, byte* buffer)
+{
+ int idx;
+
+ /* signed part header */
+ idx = SetSequence(der->total, buffer);
+ /* version */
+ XMEMCPY(buffer + idx, der->version, der->versionSz);
+ idx += der->versionSz;
+ /* subject */
+ XMEMCPY(buffer + idx, der->subject, der->subjectSz);
+ idx += der->subjectSz;
+ /* public key */
+ XMEMCPY(buffer + idx, der->publicKey, der->publicKeySz);
+ idx += der->publicKeySz;
+ /* attributes */
+ XMEMCPY(buffer + idx, der->attrib, der->attribSz);
+ idx += der->attribSz;
+ /* extensions */
+ if (der->extensionsSz) {
+ XMEMCPY(buffer + idx, der->extensions, min(der->extensionsSz,
+ (int)sizeof(der->extensions)));
+ idx += der->extensionsSz;
+ }
+
+ return idx;
+}
+
+
+static int MakeCertReq(Cert* cert, byte* derBuffer, word32 derSz,
+ RsaKey* rsaKey, ecc_key* eccKey, ed25519_key* ed25519Key)
+{
+ int ret;
+#ifdef WOLFSSL_SMALL_STACK
+ DerCert* der;
+#else
+ DerCert der[1];
+#endif
+
+ cert->keyType = eccKey ? ECC_KEY : (ed25519Key ? ED25519_KEY : RSA_KEY);
+
+#ifdef WOLFSSL_SMALL_STACK
+ der = (DerCert*)XMALLOC(sizeof(DerCert), cert->heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (der == NULL)
+ return MEMORY_E;
+#endif
+
+ ret = EncodeCertReq(cert, der, rsaKey, eccKey, ed25519Key);
+
+ if (ret == 0) {
+ if (der->total + MAX_SEQ_SZ * 2 > (int)derSz)
+ ret = BUFFER_E;
+ else
+ ret = cert->bodySz = WriteCertReqBody(der, derBuffer);
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(der, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret;
+}
+
+int wc_MakeCertReq_ex(Cert* cert, byte* derBuffer, word32 derSz, int keyType,
+ void* key)
+{
+ RsaKey* rsaKey = NULL;
+ ecc_key* eccKey = NULL;
+ ed25519_key* ed25519Key = NULL;
+
+ if (keyType == RSA_TYPE)
+ rsaKey = (RsaKey*)key;
+ else if (keyType == ECC_TYPE)
+ eccKey = (ecc_key*)key;
+ else if (keyType == ED25519_TYPE)
+ ed25519Key = (ed25519_key*)key;
+
+ return MakeCertReq(cert, derBuffer, derSz, rsaKey, eccKey, ed25519Key);
+}
+
+int wc_MakeCertReq(Cert* cert, byte* derBuffer, word32 derSz,
+ RsaKey* rsaKey, ecc_key* eccKey)
+{
+ return MakeCertReq(cert, derBuffer, derSz, rsaKey, eccKey, NULL);
+}
+#endif /* WOLFSSL_CERT_REQ */
+
+
+static int SignCert(int requestSz, int sType, byte* buffer, word32 buffSz,
+ RsaKey* rsaKey, ecc_key* eccKey, ed25519_key* ed25519Key,
+ WC_RNG* rng)
+{
+ int sigSz = 0;
+ void* heap = NULL;
+ CertSignCtx* certSignCtx = NULL;
+#ifndef WOLFSSL_ASYNC_CRYPT
+ CertSignCtx certSignCtx_lcl;
+ certSignCtx = &certSignCtx_lcl;
+ XMEMSET(certSignCtx, 0, sizeof(CertSignCtx));
+#endif
+
+ if (requestSz < 0)
+ return requestSz;
+
+ /* locate ctx */
+ if (rsaKey) {
+ #ifndef NO_RSA
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ certSignCtx = &rsaKey->certSignCtx;
+ #endif
+ heap = rsaKey->heap;
+ #else
+ return NOT_COMPILED_IN;
+ #endif /* NO_RSA */
+ }
+ else if (eccKey) {
+ #ifdef HAVE_ECC
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ certSignCtx = &eccKey->certSignCtx;
+ #endif
+ heap = eccKey->heap;
+ #else
+ return NOT_COMPILED_IN;
+ #endif /* HAVE_ECC */
+ }
+
+#ifdef WOLFSSL_ASYNC_CRYPT
+ if (certSignCtx == NULL) {
+ return BAD_FUNC_ARG;
+ }
+#endif
+
+ if (certSignCtx->sig == NULL) {
+ certSignCtx->sig = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ, heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (certSignCtx->sig == NULL)
+ return MEMORY_E;
+ }
+
+ sigSz = MakeSignature(certSignCtx, buffer, requestSz, certSignCtx->sig,
+ MAX_ENCODED_SIG_SZ, rsaKey, eccKey, ed25519Key, rng, sType, heap);
+ if (sigSz == WC_PENDING_E) {
+ /* Not free'ing certSignCtx->sig here because it could still be in use
+ * with async operations. */
+ return sigSz;
+ }
+
+ if (sigSz >= 0) {
+ if (requestSz + MAX_SEQ_SZ * 2 + sigSz > (int)buffSz)
+ sigSz = BUFFER_E;
+ else
+ sigSz = AddSignature(buffer, requestSz, certSignCtx->sig, sigSz,
+ sType);
+ }
+
+ XFREE(certSignCtx->sig, heap, DYNAMIC_TYPE_TMP_BUFFER);
+ certSignCtx->sig = NULL;
+
+ return sigSz;
+}
+
+int wc_SignCert_ex(int requestSz, int sType, byte* buffer, word32 buffSz,
+ int keyType, void* key, WC_RNG* rng)
+{
+ RsaKey* rsaKey = NULL;
+ ecc_key* eccKey = NULL;
+ ed25519_key* ed25519Key = NULL;
+
+ if (keyType == RSA_TYPE)
+ rsaKey = (RsaKey*)key;
+ else if (keyType == ECC_TYPE)
+ eccKey = (ecc_key*)key;
+ else if (keyType == ED25519_TYPE)
+ ed25519Key = (ed25519_key*)key;
+
+ return SignCert(requestSz, sType, buffer, buffSz, rsaKey, eccKey,
+ ed25519Key, rng);
+}
+
+int wc_SignCert(int requestSz, int sType, byte* buffer, word32 buffSz,
+ RsaKey* rsaKey, ecc_key* eccKey, WC_RNG* rng)
+{
+ return SignCert(requestSz, sType, buffer, buffSz, rsaKey, eccKey, NULL,
+ rng);
+}
+
+int wc_MakeSelfCert(Cert* cert, byte* buffer, word32 buffSz,
+ RsaKey* key, WC_RNG* rng)
+{
+ int ret;
+
+ ret = wc_MakeCert(cert, buffer, buffSz, key, NULL, rng);
+ if (ret < 0)
+ return ret;
+
+ return wc_SignCert(cert->bodySz, cert->sigType,
+ buffer, buffSz, key, NULL, rng);
+}
+
+
+#ifdef WOLFSSL_CERT_EXT
+
+/* Set KID from public key */
+static int SetKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey,
+ byte *ntruKey, word16 ntruKeySz,
+ ed25519_key* ed25519Key, int kid_type)
+{
+ byte *buffer;
+ int bufferSz, ret;
+
+ if (cert == NULL ||
+ (rsakey == NULL && eckey == NULL && ntruKey == NULL &&
+ ed25519Key == NULL) ||
+ (kid_type != SKID_TYPE && kid_type != AKID_TYPE))
+ return BAD_FUNC_ARG;
+
+ buffer = (byte *)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (buffer == NULL)
+ return MEMORY_E;
+
+ /* Public Key */
+ bufferSz = -1;
+#ifndef NO_RSA
+ /* RSA public key */
+ if (rsakey != NULL)
+ bufferSz = SetRsaPublicKey(buffer, rsakey, MAX_PUBLIC_KEY_SZ, 0);
+#endif
+#ifdef HAVE_ECC
+ /* ECC public key */
+ if (eckey != NULL)
+ bufferSz = SetEccPublicKey(buffer, eckey, 0);
+#endif
+#ifdef HAVE_NTRU
+ /* NTRU public key */
+ if (ntruKey != NULL) {
+ bufferSz = MAX_PUBLIC_KEY_SZ;
+ ret = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(
+ ntruKeySz, ntruKey, (word16 *)(&bufferSz), buffer);
+ if (ret != NTRU_OK)
+ bufferSz = -1;
+ }
+#else
+ (void)ntruKeySz;
+#endif
+#ifdef HAVE_ED25519
+ /* ED25519 public key */
+ if (ed25519Key != NULL)
+ bufferSz = SetEd25519PublicKey(buffer, ed25519Key, 0);
+#endif
+
+ if (bufferSz <= 0) {
+ XFREE(buffer, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return PUBLIC_KEY_E;
+ }
+
+ /* Compute SKID by hashing public key */
+#ifdef NO_SHA
+ if (kid_type == SKID_TYPE) {
+ ret = wc_Sha256Hash(buffer, bufferSz, cert->skid);
+ cert->skidSz = WC_SHA256_DIGEST_SIZE;
+ }
+ else if (kid_type == AKID_TYPE) {
+ ret = wc_Sha256Hash(buffer, bufferSz, cert->akid);
+ cert->akidSz = WC_SHA256_DIGEST_SIZE;
+ }
+ else
+ ret = BAD_FUNC_ARG;
+#else /* NO_SHA */
+ if (kid_type == SKID_TYPE) {
+ ret = wc_ShaHash(buffer, bufferSz, cert->skid);
+ cert->skidSz = WC_SHA_DIGEST_SIZE;
+ }
+ else if (kid_type == AKID_TYPE) {
+ ret = wc_ShaHash(buffer, bufferSz, cert->akid);
+ cert->akidSz = WC_SHA_DIGEST_SIZE;
+ }
+ else
+ ret = BAD_FUNC_ARG;
+#endif /* NO_SHA */
+
+ XFREE(buffer, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+}
+
+int wc_SetSubjectKeyIdFromPublicKey_ex(Cert *cert, int keyType, void* key)
+{
+ RsaKey* rsaKey = NULL;
+ ecc_key* eccKey = NULL;
+ ed25519_key* ed25519Key = NULL;
+
+ if (keyType == RSA_TYPE)
+ rsaKey = (RsaKey*)key;
+ else if (keyType == ECC_TYPE)
+ eccKey = (ecc_key*)key;
+ else if (keyType == ED25519_TYPE)
+ ed25519Key = (ed25519_key*)key;
+
+ return SetKeyIdFromPublicKey(cert, rsaKey, eccKey, NULL, 0, ed25519Key,
+ SKID_TYPE);
+}
+
+/* Set SKID from RSA or ECC public key */
+int wc_SetSubjectKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey)
+{
+ return SetKeyIdFromPublicKey(cert, rsakey, eckey, NULL, 0, NULL, SKID_TYPE);
+}
+
+#ifdef HAVE_NTRU
+/* Set SKID from NTRU public key */
+int wc_SetSubjectKeyIdFromNtruPublicKey(Cert *cert,
+ byte *ntruKey, word16 ntruKeySz)
+{
+ return SetKeyIdFromPublicKey(cert, NULL,NULL,ntruKey, ntruKeySz, NULL,
+ SKID_TYPE);
+}
+#endif
+
+int wc_SetAuthKeyIdFromPublicKey_ex(Cert *cert, int keyType, void* key)
+{
+ RsaKey* rsaKey = NULL;
+ ecc_key* eccKey = NULL;
+ ed25519_key* ed25519Key = NULL;
+
+ if (keyType == RSA_TYPE)
+ rsaKey = (RsaKey*)key;
+ else if (keyType == ECC_TYPE)
+ eccKey = (ecc_key*)key;
+ else if (keyType == ED25519_TYPE)
+ ed25519Key = (ed25519_key*)key;
+
+ return SetKeyIdFromPublicKey(cert, rsaKey, eccKey, NULL, 0, ed25519Key,
+ AKID_TYPE);
+}
+
+/* Set SKID from RSA or ECC public key */
+int wc_SetAuthKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey)
+{
+ return SetKeyIdFromPublicKey(cert, rsakey, eckey, NULL, 0, NULL, AKID_TYPE);
+}
+
+
+#ifndef NO_FILESYSTEM
+
+/* Set SKID from public key file in PEM */
+int wc_SetSubjectKeyId(Cert *cert, const char* file)
+{
+ int ret, derSz;
+ byte* der;
+ word32 idx;
+ RsaKey *rsakey = NULL;
+ ecc_key *eckey = NULL;
+
+ if (cert == NULL || file == NULL)
+ return BAD_FUNC_ARG;
+
+ der = (byte*)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap, DYNAMIC_TYPE_CERT);
+ if (der == NULL) {
+ WOLFSSL_MSG("wc_SetSubjectKeyId memory Problem");
+ return MEMORY_E;
+ }
+
+ derSz = wc_PemPubKeyToDer(file, der, MAX_PUBLIC_KEY_SZ);
+ if (derSz <= 0)
+ {
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return derSz;
+ }
+
+ /* Load PubKey in internal structure */
+#ifndef NO_RSA
+ rsakey = (RsaKey*) XMALLOC(sizeof(RsaKey), cert->heap, DYNAMIC_TYPE_RSA);
+ if (rsakey == NULL) {
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return MEMORY_E;
+ }
+
+ if (wc_InitRsaKey(rsakey, cert->heap) != 0) {
+ WOLFSSL_MSG("wc_InitRsaKey failure");
+ XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return MEMORY_E;
+ }
+
+ idx = 0;
+ ret = wc_RsaPublicKeyDecode(der, &idx, rsakey, derSz);
+ if (ret != 0)
+#endif
+ {
+#ifndef NO_RSA
+ WOLFSSL_MSG("wc_RsaPublicKeyDecode failed");
+ wc_FreeRsaKey(rsakey);
+ XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
+ rsakey = NULL;
+#endif
+#ifdef HAVE_ECC
+ /* Check to load ecc public key */
+ eckey = (ecc_key*) XMALLOC(sizeof(ecc_key), cert->heap,
+ DYNAMIC_TYPE_ECC);
+ if (eckey == NULL) {
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return MEMORY_E;
+ }
+
+ if (wc_ecc_init(eckey) != 0) {
+ WOLFSSL_MSG("wc_ecc_init failure");
+ wc_ecc_free(eckey);
+ XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return MEMORY_E;
+ }
+
+ idx = 0;
+ ret = wc_EccPublicKeyDecode(der, &idx, eckey, derSz);
+ if (ret != 0) {
+ WOLFSSL_MSG("wc_EccPublicKeyDecode failed");
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ wc_ecc_free(eckey);
+ XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
+ return PUBLIC_KEY_E;
+ }
+#else
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return PUBLIC_KEY_E;
+#endif /* HAVE_ECC */
+ }
+
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+
+ ret = wc_SetSubjectKeyIdFromPublicKey(cert, rsakey, eckey);
+
+#ifndef NO_RSA
+ wc_FreeRsaKey(rsakey);
+ XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
+#endif
+#ifdef HAVE_ECC
+ wc_ecc_free(eckey);
+ XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
+#endif
+ return ret;
+}
+
+#endif /* NO_FILESYSTEM */
+
+/* Set AKID from certificate contains in buffer (DER encoded) */
+int wc_SetAuthKeyIdFromCert(Cert *cert, const byte *der, int derSz)
+{
+ int ret;
+
+#ifdef WOLFSSL_SMALL_STACK
+ DecodedCert* decoded;
+#else
+ DecodedCert decoded[1];
+#endif
+
+ if (cert == NULL || der == NULL || derSz <= 0)
+ return BAD_FUNC_ARG;
+
+#ifdef WOLFSSL_SMALL_STACK
+ decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert),
+ cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (decoded == NULL)
+ return MEMORY_E;
+#endif
+
+ /* decode certificate and get SKID that will be AKID of current cert */
+ InitDecodedCert(decoded, (byte*)der, derSz, NULL);
+ ret = ParseCert(decoded, CERT_TYPE, NO_VERIFY, 0);
+ if (ret != 0) {
+ FreeDecodedCert(decoded);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret;
+ }
+
+ /* Subject Key Id not found !! */
+ if (decoded->extSubjKeyIdSet == 0) {
+ FreeDecodedCert(decoded);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ASN_NO_SKID;
+ }
+
+ /* SKID invalid size */
+ if (sizeof(cert->akid) < sizeof(decoded->extSubjKeyId)) {
+ FreeDecodedCert(decoded);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return MEMORY_E;
+ }
+
+ /* Put the SKID of CA to AKID of certificate */
+ XMEMCPY(cert->akid, decoded->extSubjKeyId, KEYID_SIZE);
+ cert->akidSz = KEYID_SIZE;
+
+ FreeDecodedCert(decoded);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+
+ return 0;
+}
+
+
+#ifndef NO_FILESYSTEM
+
+/* Set AKID from certificate file in PEM */
+int wc_SetAuthKeyId(Cert *cert, const char* file)
+{
+ int ret;
+ int derSz;
+ byte* der;
+
+ if (cert == NULL || file == NULL)
+ return BAD_FUNC_ARG;
+
+ der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
+ if (der == NULL) {
+ WOLFSSL_MSG("wc_SetAuthKeyId OOF Problem");
+ return MEMORY_E;
+ }
+
+ derSz = wc_PemCertToDer(file, der, EIGHTK_BUF);
+ if (derSz <= 0)
+ {
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return derSz;
+ }
+
+ ret = wc_SetAuthKeyIdFromCert(cert, der, derSz);
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+
+ return ret;
+}
+
+#endif /* NO_FILESYSTEM */
+
+/* Set KeyUsage from human readable string */
+int wc_SetKeyUsage(Cert *cert, const char *value)
+{
+ int ret = 0;
+ char *token, *str, *ptr;
+ word32 len;
+
+ if (cert == NULL || value == NULL)
+ return BAD_FUNC_ARG;
+
+ cert->keyUsage = 0;
+
+ len = (word32)XSTRLEN(value);
+ str = (char*)XMALLOC(len+1, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (str == NULL)
+ return MEMORY_E;
+
+ XSTRNCPY(str, value, len);
+ str[len] = '\0';
+
+ /* parse value, and set corresponding Key Usage value */
+ if ((token = XSTRTOK(str, ",", &ptr)) == NULL) {
+ XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return KEYUSAGE_E;
+ }
+ while (token != NULL)
+ {
+ len = (word32)XSTRLEN(token);
+
+ if (!XSTRNCASECMP(token, "digitalSignature", len))
+ cert->keyUsage |= KEYUSE_DIGITAL_SIG;
+ else if (!XSTRNCASECMP(token, "nonRepudiation", len) ||
+ !XSTRNCASECMP(token, "contentCommitment", len))
+ cert->keyUsage |= KEYUSE_CONTENT_COMMIT;
+ else if (!XSTRNCASECMP(token, "keyEncipherment", len))
+ cert->keyUsage |= KEYUSE_KEY_ENCIPHER;
+ else if (!XSTRNCASECMP(token, "dataEncipherment", len))
+ cert->keyUsage |= KEYUSE_DATA_ENCIPHER;
+ else if (!XSTRNCASECMP(token, "keyAgreement", len))
+ cert->keyUsage |= KEYUSE_KEY_AGREE;
+ else if (!XSTRNCASECMP(token, "keyCertSign", len))
+ cert->keyUsage |= KEYUSE_KEY_CERT_SIGN;
+ else if (!XSTRNCASECMP(token, "cRLSign", len))
+ cert->keyUsage |= KEYUSE_CRL_SIGN;
+ else if (!XSTRNCASECMP(token, "encipherOnly", len))
+ cert->keyUsage |= KEYUSE_ENCIPHER_ONLY;
+ else if (!XSTRNCASECMP(token, "decipherOnly", len))
+ cert->keyUsage |= KEYUSE_DECIPHER_ONLY;
+ else {
+ ret = KEYUSAGE_E;
+ break;
+ }
+
+ token = XSTRTOK(NULL, ",", &ptr);
+ }
+
+ XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+}
+
+/* Set ExtendedKeyUsage from human readable string */
+int wc_SetExtKeyUsage(Cert *cert, const char *value)
+{
+ int ret = 0;
+ char *token, *str, *ptr;
+ word32 len;
+
+ if (cert == NULL || value == NULL)
+ return BAD_FUNC_ARG;
+
+ cert->extKeyUsage = 0;
+
+ len = (word32)XSTRLEN(value);
+ str = (char*)XMALLOC(len+1, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (str == NULL)
+ return MEMORY_E;
+
+ XSTRNCPY(str, value, len);
+ str[len] = '\0';
+
+ /* parse value, and set corresponding Key Usage value */
+ if ((token = XSTRTOK(str, ",", &ptr)) == NULL) {
+ XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return EXTKEYUSAGE_E;
+ }
+
+ while (token != NULL)
+ {
+ len = (word32)XSTRLEN(token);
+
+ if (!XSTRNCASECMP(token, "any", len))
+ cert->extKeyUsage |= EXTKEYUSE_ANY;
+ else if (!XSTRNCASECMP(token, "serverAuth", len))
+ cert->extKeyUsage |= EXTKEYUSE_SERVER_AUTH;
+ else if (!XSTRNCASECMP(token, "clientAuth", len))
+ cert->extKeyUsage |= EXTKEYUSE_CLIENT_AUTH;
+ else if (!XSTRNCASECMP(token, "codeSigning", len))
+ cert->extKeyUsage |= EXTKEYUSE_CODESIGN;
+ else if (!XSTRNCASECMP(token, "emailProtection", len))
+ cert->extKeyUsage |= EXTKEYUSE_EMAILPROT;
+ else if (!XSTRNCASECMP(token, "timeStamping", len))
+ cert->extKeyUsage |= EXTKEYUSE_TIMESTAMP;
+ else if (!XSTRNCASECMP(token, "OCSPSigning", len))
+ cert->extKeyUsage |= EXTKEYUSE_OCSP_SIGN;
+ else {
+ ret = EXTKEYUSAGE_E;
+ break;
+ }
+
+ token = XSTRTOK(NULL, ",", &ptr);
+ }
+
+ XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+}
+
+#ifdef WOLFSSL_EKU_OID
+/*
+ * cert structure to set EKU oid in
+ * oid the oid in byte representation
+ * sz size of oid buffer
+ * idx index of array to place oid
+ *
+ * returns 0 on success
+ */
+int wc_SetExtKeyUsageOID(Cert *cert, const char *in, word32 sz, byte idx,
+ void* heap)
+{
+ byte oid[MAX_OID_SZ];
+ word32 oidSz = MAX_OID_SZ;
+
+ if (idx >= CTC_MAX_EKU_NB || sz >= CTC_MAX_EKU_OID_SZ) {
+ WOLFSSL_MSG("Either idx or sz was too large");
+ return BAD_FUNC_ARG;
+ }
+
+ if (EncodePolicyOID(oid, &oidSz, in, heap) != 0) {
+ return BUFFER_E;
+ }
+
+ XMEMCPY(cert->extKeyUsageOID[idx], oid, oidSz);
+ cert->extKeyUsageOIDSz[idx] = oidSz;
+ cert->extKeyUsage |= EXTKEYUSE_USER;
+
+ return 0;
+}
+#endif /* WOLFSSL_EKU_OID */
+#endif /* WOLFSSL_CERT_EXT */
+
+
+#ifdef WOLFSSL_ALT_NAMES
+
+/* Set Alt Names from der cert, return 0 on success */
+static int SetAltNamesFromCert(Cert* cert, const byte* der, int derSz)
+{
+ int ret;
+#ifdef WOLFSSL_SMALL_STACK
+ DecodedCert* decoded;
+#else
+ DecodedCert decoded[1];
+#endif
+
+ if (derSz < 0)
+ return derSz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), cert->heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (decoded == NULL)
+ return MEMORY_E;
+#endif
+
+ InitDecodedCert(decoded, (byte*)der, derSz, NULL);
+ ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
+
+ if (ret < 0) {
+ WOLFSSL_MSG("ParseCertRelative error");
+ }
+ else if (decoded->extensions) {
+ byte b;
+ int length;
+ word32 maxExtensionsIdx;
+
+ decoded->srcIdx = decoded->extensionsIdx;
+ b = decoded->source[decoded->srcIdx++];
+
+ if (b != ASN_EXTENSIONS) {
+ ret = ASN_PARSE_E;
+ }
+ else if (GetLength(decoded->source, &decoded->srcIdx, &length,
+ decoded->maxIdx) < 0) {
+ ret = ASN_PARSE_E;
+ }
+ else if (GetSequence(decoded->source, &decoded->srcIdx, &length,
+ decoded->maxIdx) < 0) {
+ ret = ASN_PARSE_E;
+ }
+ else {
+ maxExtensionsIdx = decoded->srcIdx + length;
+
+ while (decoded->srcIdx < maxExtensionsIdx) {
+ word32 oid;
+ word32 startIdx = decoded->srcIdx;
+ word32 tmpIdx;
+
+ if (GetSequence(decoded->source, &decoded->srcIdx, &length,
+ decoded->maxIdx) < 0) {
+ ret = ASN_PARSE_E;
+ break;
+ }
+
+ tmpIdx = decoded->srcIdx;
+ decoded->srcIdx = startIdx;
+
+ if (GetAlgoId(decoded->source, &decoded->srcIdx, &oid,
+ oidCertExtType, decoded->maxIdx) < 0) {
+ ret = ASN_PARSE_E;
+ break;
+ }
+
+ if (oid == ALT_NAMES_OID) {
+ cert->altNamesSz = length + (tmpIdx - startIdx);
+
+ if (cert->altNamesSz < (int)sizeof(cert->altNames))
+ XMEMCPY(cert->altNames, &decoded->source[startIdx],
+ cert->altNamesSz);
+ else {
+ cert->altNamesSz = 0;
+ WOLFSSL_MSG("AltNames extensions too big");
+ ret = ALT_NAME_E;
+ break;
+ }
+ }
+ decoded->srcIdx = tmpIdx + length;
+ }
+ }
+ }
+
+ FreeDecodedCert(decoded);
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret < 0 ? ret : 0;
+}
+
+
+/* Set Dates from der cert, return 0 on success */
+static int SetDatesFromCert(Cert* cert, const byte* der, int derSz)
+{
+ int ret;
+#ifdef WOLFSSL_SMALL_STACK
+ DecodedCert* decoded;
+#else
+ DecodedCert decoded[1];
+#endif
+
+ WOLFSSL_ENTER("SetDatesFromCert");
+ if (derSz < 0)
+ return derSz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), cert->heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (decoded == NULL)
+ return MEMORY_E;
+#endif
+
+ InitDecodedCert(decoded, (byte*)der, derSz, NULL);
+ ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
+
+ if (ret < 0) {
+ WOLFSSL_MSG("ParseCertRelative error");
+ }
+ else if (decoded->beforeDate == NULL || decoded->afterDate == NULL) {
+ WOLFSSL_MSG("Couldn't extract dates");
+ ret = -1;
+ }
+ else if (decoded->beforeDateLen > MAX_DATE_SIZE ||
+ decoded->afterDateLen > MAX_DATE_SIZE) {
+ WOLFSSL_MSG("Bad date size");
+ ret = -1;
+ }
+ else {
+ XMEMCPY(cert->beforeDate, decoded->beforeDate, decoded->beforeDateLen);
+ XMEMCPY(cert->afterDate, decoded->afterDate, decoded->afterDateLen);
+
+ cert->beforeDateSz = decoded->beforeDateLen;
+ cert->afterDateSz = decoded->afterDateLen;
+ }
+
+ FreeDecodedCert(decoded);
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret < 0 ? ret : 0;
+}
+
+#endif /* WOLFSSL_ALT_NAMES */
+
+/* Set cn name from der buffer, return 0 on success */
+static int SetNameFromCert(CertName* cn, const byte* der, int derSz)
+{
+ int ret, sz;
+#ifdef WOLFSSL_SMALL_STACK
+ DecodedCert* decoded;
+#else
+ DecodedCert decoded[1];
+#endif
+
+ if (derSz < 0)
+ return derSz;
+
+#ifdef WOLFSSL_SMALL_STACK
+ decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), NULL,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (decoded == NULL)
+ return MEMORY_E;
+#endif
+
+ InitDecodedCert(decoded, (byte*)der, derSz, NULL);
+ ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
+
+ if (ret < 0) {
+ WOLFSSL_MSG("ParseCertRelative error");
+ }
+ else {
+ if (decoded->subjectCN) {
+ sz = (decoded->subjectCNLen < CTC_NAME_SIZE) ? decoded->subjectCNLen
+ : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->commonName, decoded->subjectCN, CTC_NAME_SIZE);
+ cn->commonName[sz] = '\0';
+ cn->commonNameEnc = decoded->subjectCNEnc;
+ }
+ if (decoded->subjectC) {
+ sz = (decoded->subjectCLen < CTC_NAME_SIZE) ? decoded->subjectCLen
+ : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->country, decoded->subjectC, CTC_NAME_SIZE);
+ cn->country[sz] = '\0';
+ cn->countryEnc = decoded->subjectCEnc;
+ }
+ if (decoded->subjectST) {
+ sz = (decoded->subjectSTLen < CTC_NAME_SIZE) ? decoded->subjectSTLen
+ : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->state, decoded->subjectST, CTC_NAME_SIZE);
+ cn->state[sz] = '\0';
+ cn->stateEnc = decoded->subjectSTEnc;
+ }
+ if (decoded->subjectL) {
+ sz = (decoded->subjectLLen < CTC_NAME_SIZE) ? decoded->subjectLLen
+ : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->locality, decoded->subjectL, CTC_NAME_SIZE);
+ cn->locality[sz] = '\0';
+ cn->localityEnc = decoded->subjectLEnc;
+ }
+ if (decoded->subjectO) {
+ sz = (decoded->subjectOLen < CTC_NAME_SIZE) ? decoded->subjectOLen
+ : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->org, decoded->subjectO, CTC_NAME_SIZE);
+ cn->org[sz] = '\0';
+ cn->orgEnc = decoded->subjectOEnc;
+ }
+ if (decoded->subjectOU) {
+ sz = (decoded->subjectOULen < CTC_NAME_SIZE) ? decoded->subjectOULen
+ : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->unit, decoded->subjectOU, CTC_NAME_SIZE);
+ cn->unit[sz] = '\0';
+ cn->unitEnc = decoded->subjectOUEnc;
+ }
+ if (decoded->subjectSN) {
+ sz = (decoded->subjectSNLen < CTC_NAME_SIZE) ? decoded->subjectSNLen
+ : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->sur, decoded->subjectSN, CTC_NAME_SIZE);
+ cn->sur[sz] = '\0';
+ cn->surEnc = decoded->subjectSNEnc;
+ }
+ if (decoded->subjectEmail) {
+ sz = (decoded->subjectEmailLen < CTC_NAME_SIZE)
+ ? decoded->subjectEmailLen : CTC_NAME_SIZE - 1;
+ XSTRNCPY(cn->email, decoded->subjectEmail, CTC_NAME_SIZE);
+ cn->email[sz] = '\0';
+ }
+ }
+
+ FreeDecodedCert(decoded);
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret < 0 ? ret : 0;
+}
+
+
+#ifndef NO_FILESYSTEM
+
+/* Set cert issuer from issuerFile in PEM */
+int wc_SetIssuer(Cert* cert, const char* issuerFile)
+{
+ int ret;
+ int derSz;
+ byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
+
+ if (der == NULL) {
+ WOLFSSL_MSG("wc_SetIssuer OOF Problem");
+ return MEMORY_E;
+ }
+ derSz = wc_PemCertToDer(issuerFile, der, EIGHTK_BUF);
+ cert->selfSigned = 0;
+ ret = SetNameFromCert(&cert->issuer, der, derSz);
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+
+ return ret;
+}
+
+
+/* Set cert subject from subjectFile in PEM */
+int wc_SetSubject(Cert* cert, const char* subjectFile)
+{
+ int ret;
+ int derSz;
+ byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
+
+ if (der == NULL) {
+ WOLFSSL_MSG("wc_SetSubject OOF Problem");
+ return MEMORY_E;
+ }
+ derSz = wc_PemCertToDer(subjectFile, der, EIGHTK_BUF);
+ ret = SetNameFromCert(&cert->subject, der, derSz);
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+
+ return ret;
+}
+
+
+#ifdef WOLFSSL_ALT_NAMES
+
+/* Set alt names from file in PEM */
+int wc_SetAltNames(Cert* cert, const char* file)
+{
+ int ret;
+ int derSz;
+ byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
+
+ if (der == NULL) {
+ WOLFSSL_MSG("wc_SetAltNames OOF Problem");
+ return MEMORY_E;
+ }
+ derSz = wc_PemCertToDer(file, der, EIGHTK_BUF);
+ ret = SetAltNamesFromCert(cert, der, derSz);
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+
+ return ret;
+}
+
+#endif /* WOLFSSL_ALT_NAMES */
+
+#endif /* NO_FILESYSTEM */
+
+/* Set cert issuer from DER buffer */
+int wc_SetIssuerBuffer(Cert* cert, const byte* der, int derSz)
+{
+ cert->selfSigned = 0;
+ return SetNameFromCert(&cert->issuer, der, derSz);
+}
+
+
+/* Set cert subject from DER buffer */
+int wc_SetSubjectBuffer(Cert* cert, const byte* der, int derSz)
+{
+ return SetNameFromCert(&cert->subject, der, derSz);
+}
+
+
+#ifdef WOLFSSL_ALT_NAMES
+
+/* Set cert alt names from DER buffer */
+int wc_SetAltNamesBuffer(Cert* cert, const byte* der, int derSz)
+{
+ return SetAltNamesFromCert(cert, der, derSz);
+}
+
+/* Set cert dates from DER buffer */
+int wc_SetDatesBuffer(Cert* cert, const byte* der, int derSz)
+{
+ return SetDatesFromCert(cert, der, derSz);
+}
+
+#endif /* WOLFSSL_ALT_NAMES */
+
+#endif /* WOLFSSL_CERT_GEN */
+
+
+#ifdef HAVE_ECC
+
+/* Der Encode r & s ints into out, outLen is (in/out) size */
+int StoreECC_DSA_Sig(byte* out, word32* outLen, mp_int* r, mp_int* s)
+{
+ word32 idx = 0;
+ int rSz; /* encoding size */
+ int sSz;
+ word32 headerSz = 4; /* 2*ASN_TAG + 2*LEN(ENUM) */
+
+ /* If the leading bit on the INTEGER is a 1, add a leading zero */
+ int rLeadingZero = mp_leading_bit(r);
+ int sLeadingZero = mp_leading_bit(s);
+ int rLen = mp_unsigned_bin_size(r); /* big int size */
+ int sLen = mp_unsigned_bin_size(s);
+
+ if (*outLen < (rLen + rLeadingZero + sLen + sLeadingZero +
+ headerSz + 2)) /* SEQ_TAG + LEN(ENUM) */
+ return BUFFER_E;
+
+ idx = SetSequence(rLen + rLeadingZero + sLen+sLeadingZero + headerSz, out);
+
+ /* store r */
+ rSz = SetASNIntMP(r, -1, &out[idx]);
+ if (rSz < 0)
+ return rSz;
+ idx += rSz;
+
+ /* store s */
+ sSz = SetASNIntMP(s, -1, &out[idx]);
+ if (sSz < 0)
+ return sSz;
+ idx += sSz;
+
+ *outLen = idx;
+
+ return 0;
+}
+
+
+/* Der Decode ECC-DSA Signature, r & s stored as big ints */
+int DecodeECC_DSA_Sig(const byte* sig, word32 sigLen, mp_int* r, mp_int* s)
+{
+ word32 idx = 0;
+ int len = 0;
+
+ if (GetSequence(sig, &idx, &len, sigLen) < 0) {
+ return ASN_ECC_KEY_E;
+ }
+
+ if ((word32)len > (sigLen - idx)) {
+ return ASN_ECC_KEY_E;
+ }
+
+ if (GetInt(r, sig, &idx, sigLen) < 0) {
+ return ASN_ECC_KEY_E;
+ }
+
+ if (GetInt(s, sig, &idx, sigLen) < 0) {
+ return ASN_ECC_KEY_E;
+ }
+
+ return 0;
+}
+
+
+int wc_EccPrivateKeyDecode(const byte* input, word32* inOutIdx, ecc_key* key,
+ word32 inSz)
+{
+ word32 oidSum;
+ int version, length;
+ int privSz, pubSz = 0;
+ byte b;
+ int ret = 0;
+ int curve_id = ECC_CURVE_DEF;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* priv;
+ byte* pub;
+#else
+ byte priv[ECC_MAXSIZE+1];
+ byte pub[2*(ECC_MAXSIZE+1)]; /* public key has two parts plus header */
+#endif
+ byte* pubData = NULL;
+
+ if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
+ return BAD_FUNC_ARG;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (*inOutIdx >= inSz)
+ return ASN_PARSE_E;
+
+ b = input[*inOutIdx];
+ *inOutIdx += 1;
+
+ /* priv type */
+ if (b != 4 && b != 6 && b != 7)
+ return ASN_PARSE_E;
+
+ if (GetLength(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (length > ECC_MAXSIZE)
+ return BUFFER_E;
+
+#ifdef WOLFSSL_SMALL_STACK
+ priv = (byte*)XMALLOC(ECC_MAXSIZE+1, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (priv == NULL)
+ return MEMORY_E;
+
+ pub = (byte*)XMALLOC(2*(ECC_MAXSIZE+1), key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (pub == NULL) {
+ XFREE(priv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+
+ /* priv key */
+ privSz = length;
+ XMEMCPY(priv, &input[*inOutIdx], privSz);
+ *inOutIdx += length;
+
+ if (ret == 0 && (*inOutIdx + 1) < inSz) {
+ /* prefix 0, may have */
+ b = input[*inOutIdx];
+ if (b == ECC_PREFIX_0) {
+ *inOutIdx += 1;
+
+ if (GetLength(input, inOutIdx, &length, inSz) <= 0)
+ ret = ASN_PARSE_E;
+ else {
+ ret = GetObjectId(input, inOutIdx, &oidSum, oidIgnoreType,
+ inSz);
+ if (ret == 0) {
+ if ((ret = CheckCurve(oidSum)) < 0)
+ ret = ECC_CURVE_OID_E;
+ else {
+ curve_id = ret;
+ ret = 0;
+ }
+ }
+ }
+ }
+ }
+
+ if (ret == 0 && (*inOutIdx + 1) < inSz) {
+ /* prefix 1 */
+ b = input[*inOutIdx];
+ *inOutIdx += 1;
+
+ if (b != ECC_PREFIX_1) {
+ ret = ASN_ECC_KEY_E;
+ }
+ else if (GetLength(input, inOutIdx, &length, inSz) <= 0) {
+ ret = ASN_PARSE_E;
+ }
+ else {
+ /* key header */
+ ret = CheckBitString(input, inOutIdx, &length, inSz, 0, NULL);
+ if (ret == 0) {
+ /* pub key */
+ pubSz = length;
+ if (pubSz < 2*(ECC_MAXSIZE+1)) {
+ XMEMCPY(pub, &input[*inOutIdx], pubSz);
+ *inOutIdx += length;
+ pubData = pub;
+ }
+ else
+ ret = BUFFER_E;
+ }
+ }
+ }
+
+ if (ret == 0) {
+ ret = wc_ecc_import_private_key_ex(priv, privSz, pubData, pubSz, key,
+ curve_id);
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(priv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret;
+}
+
+
+#ifdef WOLFSSL_CUSTOM_CURVES
+static void ByteToHex(byte n, char* str)
+{
+ static const char hexChar[] = { '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
+
+ str[0] = hexChar[n >> 4];
+ str[1] = hexChar[n & 0xf];
+}
+
+/* returns 0 on success */
+static int ASNToHexString(const byte* input, word32* inOutIdx, char** out,
+ word32 inSz, void* heap, int heapType)
+{
+ int len;
+ int i;
+ char* str;
+
+ if (*inOutIdx >= inSz) {
+ return BUFFER_E;
+ }
+
+ if (input[*inOutIdx] == ASN_INTEGER) {
+ if (GetASNInt(input, inOutIdx, &len, inSz) < 0)
+ return ASN_PARSE_E;
+ }
+ else {
+ if (GetOctetString(input, inOutIdx, &len, inSz) < 0)
+ return ASN_PARSE_E;
+ }
+
+ str = (char*)XMALLOC(len * 2 + 1, heap, heapType);
+ for (i=0; i<len; i++)
+ ByteToHex(input[*inOutIdx + i], str + i*2);
+ str[len*2] = '\0';
+
+ *inOutIdx += len;
+ *out = str;
+
+ return 0;
+}
+#endif
+
+int wc_EccPublicKeyDecode(const byte* input, word32* inOutIdx,
+ ecc_key* key, word32 inSz)
+{
+ int length;
+ int ret;
+ int curve_id = ECC_CURVE_DEF;
+ word32 oidSum;
+
+ if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
+ return BAD_FUNC_ARG;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ ret = SkipObjectId(input, inOutIdx, inSz);
+ if (ret != 0)
+ return ret;
+
+ if (*inOutIdx >= inSz) {
+ return BUFFER_E;
+ }
+
+ if (input[*inOutIdx] == (ASN_SEQUENCE | ASN_CONSTRUCTED)) {
+#ifdef WOLFSSL_CUSTOM_CURVES
+ ecc_set_type* curve;
+ int len;
+ char* point;
+
+ ret = 0;
+
+ curve = (ecc_set_type*)XMALLOC(sizeof(*curve), key->heap,
+ DYNAMIC_TYPE_ECC_BUFFER);
+ if (curve == NULL)
+ ret = MEMORY_E;
+
+ if (ret == 0) {
+ XMEMSET(curve, 0, sizeof(*curve));
+ curve->name = "Custom";
+ curve->id = ECC_CURVE_CUSTOM;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ ret = ASN_PARSE_E;
+ }
+
+ if (ret == 0) {
+ GetInteger7Bit(input, inOutIdx, inSz);
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ ret = ASN_PARSE_E;
+ }
+ if (ret == 0) {
+ SkipObjectId(input, inOutIdx, inSz);
+ ret = ASNToHexString(input, inOutIdx, (char**)&curve->prime, inSz,
+ key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+ }
+ if (ret == 0) {
+ curve->size = (int)XSTRLEN(curve->prime) / 2;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ ret = ASN_PARSE_E;
+ }
+ if (ret == 0) {
+ ret = ASNToHexString(input, inOutIdx, (char**)&curve->Af, inSz,
+ key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+ }
+ if (ret == 0) {
+ ret = ASNToHexString(input, inOutIdx, (char**)&curve->Bf, inSz,
+ key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+ }
+ if (ret == 0) {
+ if (*inOutIdx < inSz && input[*inOutIdx] == ASN_BIT_STRING) {
+ len = 0;
+ ret = GetASNHeader(input, ASN_BIT_STRING, inOutIdx, &len, inSz);
+ *inOutIdx += len;
+ }
+ }
+ if (ret == 0) {
+ ret = ASNToHexString(input, inOutIdx, (char**)&point, inSz,
+ key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+
+ /* sanity check that point buffer is not smaller than the expected
+ * size to hold ( 0 4 || Gx || Gy )
+ * where Gx and Gy are each the size of curve->size * 2 */
+ if (ret == 0 && (int)XSTRLEN(point) < (curve->size * 4) + 2) {
+ XFREE(point, key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+ ret = BUFFER_E;
+ }
+ }
+ if (ret == 0) {
+ curve->Gx = (const char*)XMALLOC(curve->size * 2 + 2, key->heap,
+ DYNAMIC_TYPE_ECC_BUFFER);
+ curve->Gy = (const char*)XMALLOC(curve->size * 2 + 2, key->heap,
+ DYNAMIC_TYPE_ECC_BUFFER);
+ if (curve->Gx == NULL || curve->Gy == NULL) {
+ XFREE(point, key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+ ret = MEMORY_E;
+ }
+ }
+ if (ret == 0) {
+ XMEMCPY((char*)curve->Gx, point + 2, curve->size * 2);
+ XMEMCPY((char*)curve->Gy, point + curve->size * 2 + 2,
+ curve->size * 2);
+ ((char*)curve->Gx)[curve->size * 2] = '\0';
+ ((char*)curve->Gy)[curve->size * 2] = '\0';
+ XFREE(point, key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+ ret = ASNToHexString(input, inOutIdx, (char**)&curve->order, inSz,
+ key->heap, DYNAMIC_TYPE_ECC_BUFFER);
+ }
+ if (ret == 0) {
+ curve->cofactor = GetInteger7Bit(input, inOutIdx, inSz);
+
+ curve->oid = NULL;
+ curve->oidSz = 0;
+ curve->oidSum = 0;
+
+ if (wc_ecc_set_custom_curve(key, curve) < 0) {
+ ret = ASN_PARSE_E;
+ }
+ key->deallocSet = 1;
+ curve = NULL;
+ }
+ if (curve != NULL)
+ wc_ecc_free_curve(curve, key->heap);
+
+ if (ret < 0)
+ return ret;
+#else
+ return ASN_PARSE_E;
+#endif
+ }
+ else {
+ /* ecc params information */
+ ret = GetObjectId(input, inOutIdx, &oidSum, oidIgnoreType, inSz);
+ if (ret != 0)
+ return ret;
+
+ /* get curve id */
+ curve_id = wc_ecc_get_oid(oidSum, NULL, 0);
+ if (curve_id < 0)
+ return ECC_CURVE_OID_E;
+ }
+
+ /* key header */
+ ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
+ if (ret != 0)
+ return ret;
+
+ /* This is the raw point data compressed or uncompressed. */
+ if (wc_ecc_import_x963_ex(input + *inOutIdx, inSz - *inOutIdx, key,
+ curve_id) != 0) {
+ return ASN_ECC_KEY_E;
+ }
+
+ return 0;
+}
+
+
+/* build DER formatted ECC key, include optional public key if requested,
+ * return length on success, negative on error */
+static int wc_BuildEccKeyDer(ecc_key* key, byte* output, word32 inLen,
+ int pubIn)
+{
+ byte curve[MAX_ALGO_SZ+2];
+ byte ver[MAX_VERSION_SZ];
+ byte seq[MAX_SEQ_SZ];
+ byte *prv = NULL, *pub = NULL;
+ int ret, totalSz, curveSz, verSz;
+ int privHdrSz = ASN_ECC_HEADER_SZ;
+ int pubHdrSz = ASN_ECC_CONTEXT_SZ + ASN_ECC_HEADER_SZ;
+
+ word32 idx = 0, prvidx = 0, pubidx = 0, curveidx = 0;
+ word32 seqSz, privSz, pubSz = ECC_BUFSIZE;
+
+ if (key == NULL || output == NULL || inLen == 0)
+ return BAD_FUNC_ARG;
+
+ /* curve */
+ curve[curveidx++] = ECC_PREFIX_0;
+ curveidx++ /* to put the size after computation */;
+ curveSz = SetCurve(key, curve+curveidx);
+ if (curveSz < 0)
+ return curveSz;
+ /* set computed size */
+ curve[1] = (byte)curveSz;
+ curveidx += curveSz;
+
+ /* private */
+ privSz = key->dp->size;
+ prv = (byte*)XMALLOC(privSz + privHdrSz + MAX_SEQ_SZ,
+ key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (prv == NULL) {
+ return MEMORY_E;
+ }
+ prvidx += SetOctetString8Bit(key->dp->size, &prv[prvidx]);
+ ret = wc_ecc_export_private_only(key, prv + prvidx, &privSz);
+ if (ret < 0) {
+ XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+ }
+ prvidx += privSz;
+
+ /* pubIn */
+ if (pubIn) {
+ ret = wc_ecc_export_x963(key, NULL, &pubSz);
+ if (ret != LENGTH_ONLY_E) {
+ XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+ }
+
+ pub = (byte*)XMALLOC(pubSz + pubHdrSz + MAX_SEQ_SZ,
+ key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (pub == NULL) {
+ XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+
+ pub[pubidx++] = ECC_PREFIX_1;
+ if (pubSz > 128) /* leading zero + extra size byte */
+ pubidx += SetLength(pubSz + ASN_ECC_CONTEXT_SZ + 2, pub+pubidx);
+ else /* leading zero */
+ pubidx += SetLength(pubSz + ASN_ECC_CONTEXT_SZ + 1, pub+pubidx);
+
+ /* SetBitString adds leading zero */
+ pubidx += SetBitString(pubSz, 0, pub + pubidx);
+ ret = wc_ecc_export_x963(key, pub + pubidx, &pubSz);
+ if (ret != 0) {
+ XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+ }
+ pubidx += pubSz;
+ }
+
+ /* make headers */
+ verSz = SetMyVersion(1, ver, FALSE);
+ seqSz = SetSequence(verSz + prvidx + pubidx + curveidx, seq);
+
+ totalSz = prvidx + pubidx + curveidx + verSz + seqSz;
+ if (totalSz > (int)inLen) {
+ XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (pubIn) {
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ }
+ return BAD_FUNC_ARG;
+ }
+
+ /* write out */
+ /* seq */
+ XMEMCPY(output + idx, seq, seqSz);
+ idx = seqSz;
+
+ /* ver */
+ XMEMCPY(output + idx, ver, verSz);
+ idx += verSz;
+
+ /* private */
+ XMEMCPY(output + idx, prv, prvidx);
+ idx += prvidx;
+ XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+
+ /* curve */
+ XMEMCPY(output + idx, curve, curveidx);
+ idx += curveidx;
+
+ /* pubIn */
+ if (pubIn) {
+ XMEMCPY(output + idx, pub, pubidx);
+ /* idx += pubidx; not used after write, if more data remove comment */
+ XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ }
+
+ return totalSz;
+}
+
+
+/* Write a Private ecc key, including public to DER format,
+ * length on success else < 0 */
+int wc_EccKeyToDer(ecc_key* key, byte* output, word32 inLen)
+{
+ return wc_BuildEccKeyDer(key, output, inLen, 1);
+}
+
+
+/* Write only private ecc key to DER format,
+ * length on success else < 0 */
+int wc_EccPrivateKeyToDer(ecc_key* key, byte* output, word32 inLen)
+{
+ return wc_BuildEccKeyDer(key, output, inLen, 0);
+}
+
+/* Write only private ecc key to unencrypted PKCS#8 format.
+ *
+ * If output is NULL, places required PKCS#8 buffer size in outLen and
+ * returns LENGTH_ONLY_E.
+ *
+ * return length on success else < 0 */
+int wc_EccPrivateKeyToPKCS8(ecc_key* key, byte* output, word32* outLen)
+{
+ int ret, tmpDerSz;
+ int algoID = 0;
+ word32 oidSz = 0;
+ word32 pkcs8Sz = 0;
+ const byte* curveOID = NULL;
+ byte* tmpDer = NULL;
+
+ if (key == NULL || outLen == NULL)
+ return BAD_FUNC_ARG;
+
+ /* set algoID, get curve OID */
+ algoID = ECDSAk;
+ ret = wc_ecc_get_oid(key->dp->oidSum, &curveOID, &oidSz);
+ if (ret < 0)
+ return ret;
+
+ /* temp buffer for plain DER key */
+ tmpDer = (byte*)XMALLOC(ECC_BUFSIZE, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ if (tmpDer == NULL)
+ return MEMORY_E;
+
+ XMEMSET(tmpDer, 0, ECC_BUFSIZE);
+
+ tmpDerSz = wc_BuildEccKeyDer(key, tmpDer, ECC_BUFSIZE, 0);
+ if (tmpDerSz < 0) {
+ XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return tmpDerSz;
+ }
+
+ /* get pkcs8 expected output size */
+ ret = wc_CreatePKCS8Key(NULL, &pkcs8Sz, tmpDer, tmpDerSz, algoID,
+ curveOID, oidSz);
+ if (ret != LENGTH_ONLY_E) {
+ XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+ }
+
+ if (output == NULL) {
+ XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ *outLen = pkcs8Sz;
+ return LENGTH_ONLY_E;
+
+ } else if (*outLen < pkcs8Sz) {
+ XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ WOLFSSL_MSG("Input buffer too small for ECC PKCS#8 key");
+ return BUFFER_E;
+ }
+
+ ret = wc_CreatePKCS8Key(output, &pkcs8Sz, tmpDer, tmpDerSz,
+ algoID, curveOID, oidSz);
+ if (ret < 0) {
+ XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+ }
+
+ XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
+
+ *outLen = ret;
+ return ret;
+}
+
+#endif /* HAVE_ECC */
+
+
+#ifdef HAVE_ED25519
+
+int wc_Ed25519PrivateKeyDecode(const byte* input, word32* inOutIdx,
+ ed25519_key* key, word32 inSz)
+{
+ word32 oid;
+ int ret, version, length, endKeyIdx, privSz, pubSz;
+ const byte* priv;
+ const byte* pub;
+
+ if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
+ return BAD_FUNC_ARG;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) >= 0) {
+ endKeyIdx = *inOutIdx + length;
+
+ if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
+ return ASN_PARSE_E;
+ if (version != 0) {
+ WOLFSSL_MSG("Unrecognized version of ED25519 private key");
+ return ASN_PARSE_E;
+ }
+
+ if (GetAlgoId(input, inOutIdx, &oid, oidKeyType, inSz) < 0)
+ return ASN_PARSE_E;
+ if (oid != ED25519k)
+ return ASN_PARSE_E;
+
+ if (GetOctetString(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetOctetString(input, inOutIdx, &privSz, inSz) < 0)
+ return ASN_PARSE_E;
+
+ priv = input + *inOutIdx;
+ *inOutIdx += privSz;
+ }
+ else {
+ if (GetOctetString(input, inOutIdx, &privSz, inSz) < 0)
+ return ASN_PARSE_E;
+
+ priv = input + *inOutIdx;
+ *inOutIdx += privSz;
+ endKeyIdx = *inOutIdx;
+ }
+
+ if (endKeyIdx == (int)*inOutIdx) {
+ ret = wc_ed25519_import_private_only(priv, privSz, key);
+ }
+ else {
+ if (GetASNHeader(input, ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1,
+ inOutIdx, &length, inSz) < 0) {
+ return ASN_PARSE_E;
+ }
+ if (GetOctetString(input, inOutIdx, &pubSz, inSz) < 0)
+ return ASN_PARSE_E;
+ pub = input + *inOutIdx;
+ *inOutIdx += pubSz;
+
+ ret = wc_ed25519_import_private_key(priv, privSz, pub, pubSz, key);
+ }
+ if (ret == 0 && endKeyIdx != (int)*inOutIdx)
+ return ASN_PARSE_E;
+
+ return ret;
+}
+
+
+int wc_Ed25519PublicKeyDecode(const byte* input, word32* inOutIdx,
+ ed25519_key* key, word32 inSz)
+{
+ int length;
+ int ret;
+
+ if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
+ return BAD_FUNC_ARG;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetSequence(input, inOutIdx, &length, inSz) < 0)
+ return ASN_PARSE_E;
+
+ ret = SkipObjectId(input, inOutIdx, inSz);
+ if (ret != 0)
+ return ret;
+
+ /* key header */
+ ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
+ if (ret != 0)
+ return ret;
+
+ /* This is the raw point data compressed or uncompressed. */
+ if (wc_ed25519_import_public(input + *inOutIdx, inSz - *inOutIdx, key) != 0)
+ return ASN_ECC_KEY_E;
+
+ return 0;
+}
+
+
+#ifdef WOLFSSL_KEY_GEN
+
+/* build DER formatted ED25519 key,
+ * return length on success, negative on error */
+static int wc_BuildEd25519KeyDer(ed25519_key* key, byte* output, word32 inLen,
+ int pubOut)
+{
+ byte algoArray[MAX_ALGO_SZ];
+ byte ver[MAX_VERSION_SZ];
+ byte seq[MAX_SEQ_SZ];
+ int ret;
+ word32 idx = 0, seqSz, verSz, algoSz, privSz, pubSz = 0;
+
+ if (key == NULL || output == NULL || inLen == 0)
+ return BAD_FUNC_ARG;
+
+ if (pubOut)
+ pubSz = 2 + 2 + ED25519_PUB_KEY_SIZE;
+ privSz = 2 + 2 + ED25519_KEY_SIZE;
+ algoSz = SetAlgoID(ED25519k, algoArray, oidKeyType, 0);
+ verSz = SetMyVersion(0, ver, FALSE);
+ seqSz = SetSequence(verSz + algoSz + privSz + pubSz, seq);
+
+ if (seqSz + verSz + algoSz + privSz + pubSz > inLen)
+ return BAD_FUNC_ARG;
+
+ /* write out */
+ /* seq */
+ XMEMCPY(output + idx, seq, seqSz);
+ idx = seqSz;
+ /* ver */
+ XMEMCPY(output + idx, ver, verSz);
+ idx += verSz;
+ /* algo */
+ XMEMCPY(output + idx, algoArray, algoSz);
+ idx += algoSz;
+ /* privKey */
+ idx += SetOctetString(2 + ED25519_KEY_SIZE, output + idx);
+ idx += SetOctetString(ED25519_KEY_SIZE, output + idx);
+ ret = wc_ed25519_export_private_only(key, output + idx, &privSz);
+ if (ret != 0)
+ return ret;
+ idx += privSz;
+ /* pubKey */
+ if (pubOut) {
+ idx += SetExplicit(1, 2 + ED25519_PUB_KEY_SIZE, output + idx);
+ idx += SetOctetString(ED25519_KEY_SIZE, output + idx);
+ ret = wc_ed25519_export_public(key, output + idx, &pubSz);
+ if (ret != 0)
+ return ret;
+ idx += pubSz;
+ }
+
+ return idx;
+}
+
+/* Write a Private ecc key, including public to DER format,
+ * length on success else < 0 */
+int wc_Ed25519KeyToDer(ed25519_key* key, byte* output, word32 inLen)
+{
+ return wc_BuildEd25519KeyDer(key, output, inLen, 1);
+}
+
+
+
+/* Write only private ecc key to DER format,
+ * length on success else < 0 */
+int wc_Ed25519PrivateKeyToDer(ed25519_key* key, byte* output, word32 inLen)
+{
+ return wc_BuildEd25519KeyDer(key, output, inLen, 0);
+}
+
+#endif /* WOLFSSL_KEY_GEN */
+
+#endif /* HAVE_ED25519 */
+
+
+#if defined(HAVE_OCSP) || defined(HAVE_CRL)
+
+/* Get raw Date only, no processing, 0 on success */
+static int GetBasicDate(const byte* source, word32* idx, byte* date,
+ byte* format, int maxIdx)
+{
+ int ret, length;
+ const byte *datePtr = NULL;
+
+ WOLFSSL_ENTER("GetBasicDate");
+
+ ret = GetDateInfo(source, idx, &datePtr, format, &length, maxIdx);
+ if (ret < 0)
+ return ret;
+
+ XMEMCPY(date, datePtr, length);
+
+ return 0;
+}
+
+#endif
+
+
+#ifdef HAVE_OCSP
+
+static int GetEnumerated(const byte* input, word32* inOutIdx, int *value)
+{
+ word32 idx = *inOutIdx;
+ word32 len;
+
+ WOLFSSL_ENTER("GetEnumerated");
+
+ *value = 0;
+
+ if (input[idx++] != ASN_ENUMERATED)
+ return ASN_PARSE_E;
+
+ len = input[idx++];
+ if (len > 4)
+ return ASN_PARSE_E;
+
+ while (len--) {
+ *value = *value << 8 | input[idx++];
+ }
+
+ *inOutIdx = idx;
+
+ return *value;
+}
+
+
+static int DecodeSingleResponse(byte* source,
+ word32* ioIndex, OcspResponse* resp, word32 size)
+{
+ word32 idx = *ioIndex, prevIndex, oid;
+ int length, wrapperSz;
+ CertStatus* cs = resp->status;
+ int ret;
+
+ WOLFSSL_ENTER("DecodeSingleResponse");
+
+ /* Outer wrapper of the SEQUENCE OF Single Responses. */
+ if (GetSequence(source, &idx, &wrapperSz, size) < 0)
+ return ASN_PARSE_E;
+
+ prevIndex = idx;
+
+ /* When making a request, we only request one status on one certificate
+ * at a time. There should only be one SingleResponse */
+
+ /* Wrapper around the Single Response */
+ if (GetSequence(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+
+ /* Wrapper around the CertID */
+ if (GetSequence(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+ /* Skip the hash algorithm */
+ if (GetAlgoId(source, &idx, &oid, oidIgnoreType, size) < 0)
+ return ASN_PARSE_E;
+ /* Save reference to the hash of CN */
+ ret = GetOctetString(source, &idx, &length, size);
+ if (ret < 0)
+ return ret;
+ resp->issuerHash = source + idx;
+ idx += length;
+ /* Save reference to the hash of the issuer public key */
+ ret = GetOctetString(source, &idx, &length, size);
+ if (ret < 0)
+ return ret;
+ resp->issuerKeyHash = source + idx;
+ idx += length;
+
+ /* Get serial number */
+ if (GetSerialNumber(source, &idx, cs->serial, &cs->serialSz, size) < 0)
+ return ASN_PARSE_E;
+
+ /* CertStatus */
+ switch (source[idx++])
+ {
+ case (ASN_CONTEXT_SPECIFIC | CERT_GOOD):
+ cs->status = CERT_GOOD;
+ idx++;
+ break;
+ case (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | CERT_REVOKED):
+ cs->status = CERT_REVOKED;
+ if (GetLength(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+ idx += length;
+ break;
+ case (ASN_CONTEXT_SPECIFIC | CERT_UNKNOWN):
+ cs->status = CERT_UNKNOWN;
+ idx++;
+ break;
+ default:
+ return ASN_PARSE_E;
+ }
+
+#if defined(OPENSSL_ALL) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
+ cs->thisDateAsn = source + idx;
+#endif
+ if (GetBasicDate(source, &idx, cs->thisDate,
+ &cs->thisDateFormat, size) < 0)
+ return ASN_PARSE_E;
+
+#ifndef NO_ASN_TIME
+ if (!XVALIDATE_DATE(cs->thisDate, cs->thisDateFormat, BEFORE))
+ return ASN_BEFORE_DATE_E;
+#endif
+
+ /* The following items are optional. Only check for them if there is more
+ * unprocessed data in the singleResponse wrapper. */
+
+ if (((int)(idx - prevIndex) < wrapperSz) &&
+ (source[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 0)))
+ {
+ idx++;
+ if (GetLength(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+#if defined(OPENSSL_ALL) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
+ cs->nextDateAsn = source + idx;
+#endif
+ if (GetBasicDate(source, &idx, cs->nextDate,
+ &cs->nextDateFormat, size) < 0)
+ return ASN_PARSE_E;
+
+#ifndef NO_ASN_TIME
+ if (!XVALIDATE_DATE(cs->nextDate, cs->nextDateFormat, AFTER))
+ return ASN_AFTER_DATE_E;
+#endif
+ }
+ if (((int)(idx - prevIndex) < wrapperSz) &&
+ (source[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1)))
+ {
+ idx++;
+ if (GetLength(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+ idx += length;
+ }
+
+ *ioIndex = idx;
+
+ return 0;
+}
+
+static int DecodeOcspRespExtensions(byte* source,
+ word32* ioIndex, OcspResponse* resp, word32 sz)
+{
+ word32 idx = *ioIndex;
+ int length;
+ int ext_bound; /* boundary index for the sequence of extensions */
+ word32 oid;
+ int ret;
+
+ WOLFSSL_ENTER("DecodeOcspRespExtensions");
+
+ if ((idx + 1) > sz)
+ return BUFFER_E;
+
+ if (source[idx++] != (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1))
+ return ASN_PARSE_E;
+
+ if (GetLength(source, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetSequence(source, &idx, &length, sz) < 0)
+ return ASN_PARSE_E;
+
+ ext_bound = idx + length;
+
+ while (idx < (word32)ext_bound) {
+ if (GetSequence(source, &idx, &length, sz) < 0) {
+ WOLFSSL_MSG("\tfail: should be a SEQUENCE");
+ return ASN_PARSE_E;
+ }
+
+ oid = 0;
+ if (GetObjectId(source, &idx, &oid, oidOcspType, sz) < 0) {
+ WOLFSSL_MSG("\tfail: OBJECT ID");
+ return ASN_PARSE_E;
+ }
+
+ /* check for critical flag */
+ if (source[idx] == ASN_BOOLEAN) {
+ WOLFSSL_MSG("\tfound optional critical flag, moving past");
+ ret = GetBoolean(source, &idx, sz);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = GetOctetString(source, &idx, &length, sz);
+ if (ret < 0)
+ return ret;
+
+ if (oid == OCSP_NONCE_OID) {
+ /* get data inside extra OCTET_STRING */
+ ret = GetOctetString(source, &idx, &length, sz);
+ if (ret < 0)
+ return ret;
+
+ resp->nonce = source + idx;
+ resp->nonceSz = length;
+ }
+
+ idx += length;
+ }
+
+ *ioIndex = idx;
+ return 0;
+}
+
+
+static int DecodeResponseData(byte* source,
+ word32* ioIndex, OcspResponse* resp, word32 size)
+{
+ word32 idx = *ioIndex, prev_idx;
+ int length;
+ int version;
+ word32 responderId = 0;
+
+ WOLFSSL_ENTER("DecodeResponseData");
+
+ resp->response = source + idx;
+ prev_idx = idx;
+ if (GetSequence(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+ resp->responseSz = length + idx - prev_idx;
+
+ /* Get version. It is an EXPLICIT[0] DEFAULT(0) value. If this
+ * item isn't an EXPLICIT[0], then set version to zero and move
+ * onto the next item.
+ */
+ if (source[idx] == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED))
+ {
+ idx += 2; /* Eat the value and length */
+ if (GetMyVersion(source, &idx, &version, size) < 0)
+ return ASN_PARSE_E;
+ } else
+ version = 0;
+
+ responderId = source[idx++];
+ if ((responderId == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1)) ||
+ (responderId == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 2)))
+ {
+ if (GetLength(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+ idx += length;
+ }
+ else
+ return ASN_PARSE_E;
+
+ /* save pointer to the producedAt time */
+ if (GetBasicDate(source, &idx, resp->producedDate,
+ &resp->producedDateFormat, size) < 0)
+ return ASN_PARSE_E;
+
+ if (DecodeSingleResponse(source, &idx, resp, size) < 0)
+ return ASN_PARSE_E;
+
+ /*
+ * Check the length of the ResponseData against the current index to
+ * see if there are extensions, they are optional.
+ */
+ if (idx - prev_idx < resp->responseSz)
+ if (DecodeOcspRespExtensions(source, &idx, resp, size) < 0)
+ return ASN_PARSE_E;
+
+ *ioIndex = idx;
+ return 0;
+}
+
+
+#ifndef WOLFSSL_NO_OCSP_OPTIONAL_CERTS
+
+static int DecodeCerts(byte* source,
+ word32* ioIndex, OcspResponse* resp, word32 size)
+{
+ word32 idx = *ioIndex;
+
+ WOLFSSL_ENTER("DecodeCerts");
+
+ if (source[idx++] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC))
+ {
+ int length;
+
+ if (GetLength(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+
+ if (GetSequence(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+
+ resp->cert = source + idx;
+ resp->certSz = length;
+
+ idx += length;
+ }
+ *ioIndex = idx;
+ return 0;
+}
+
+#endif /* WOLFSSL_NO_OCSP_OPTIONAL_CERTS */
+
+
+static int DecodeBasicOcspResponse(byte* source, word32* ioIndex,
+ OcspResponse* resp, word32 size, void* cm, void* heap, int noVerify)
+{
+ int length;
+ word32 idx = *ioIndex;
+ word32 end_index;
+ int ret;
+ int sigLength;
+
+ WOLFSSL_ENTER("DecodeBasicOcspResponse");
+ (void)heap;
+
+ if (GetSequence(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+
+ if (idx + length > size)
+ return ASN_INPUT_E;
+ end_index = idx + length;
+
+ if (DecodeResponseData(source, &idx, resp, size) < 0)
+ return ASN_PARSE_E;
+
+ /* Get the signature algorithm */
+ if (GetAlgoId(source, &idx, &resp->sigOID, oidSigType, size) < 0)
+ return ASN_PARSE_E;
+
+ ret = CheckBitString(source, &idx, &sigLength, size, 1, NULL);
+ if (ret != 0)
+ return ret;
+
+ resp->sigSz = sigLength;
+ resp->sig = source + idx;
+ idx += sigLength;
+
+ /*
+ * Check the length of the BasicOcspResponse against the current index to
+ * see if there are certificates, they are optional.
+ */
+#ifndef WOLFSSL_NO_OCSP_OPTIONAL_CERTS
+ if (idx < end_index)
+ {
+ DecodedCert cert;
+
+ if (DecodeCerts(source, &idx, resp, size) < 0)
+ return ASN_PARSE_E;
+
+ InitDecodedCert(&cert, resp->cert, resp->certSz, heap);
+
+ /* Don't verify if we don't have access to Cert Manager. */
+ ret = ParseCertRelative(&cert, CERT_TYPE,
+ noVerify ? NO_VERIFY : VERIFY_OCSP, cm);
+ if (ret < 0) {
+ WOLFSSL_MSG("\tOCSP Responder certificate parsing failed");
+ FreeDecodedCert(&cert);
+ return ret;
+ }
+
+#ifndef WOLFSSL_NO_OCSP_ISSUER_CHECK
+ if ((cert.extExtKeyUsage & EXTKEYUSE_OCSP_SIGN) == 0) {
+ if (XMEMCMP(cert.subjectHash,
+ resp->issuerHash, KEYID_SIZE) == 0) {
+ WOLFSSL_MSG("\tOCSP Response signed by issuer");
+ }
+ else {
+ WOLFSSL_MSG("\tOCSP Responder key usage check failed");
+ #ifdef OPENSSL_EXTRA
+ resp->verifyError = OCSP_BAD_ISSUER;
+ #else
+ FreeDecodedCert(&cert);
+ return BAD_OCSP_RESPONDER;
+ #endif
+ }
+ }
+#endif
+
+ /* ConfirmSignature is blocking here */
+ ret = ConfirmSignature(&cert.sigCtx,
+ resp->response, resp->responseSz,
+ cert.publicKey, cert.pubKeySize, cert.keyOID,
+ resp->sig, resp->sigSz, resp->sigOID);
+ FreeDecodedCert(&cert);
+
+ if (ret != 0) {
+ WOLFSSL_MSG("\tOCSP Confirm signature failed");
+ return ASN_OCSP_CONFIRM_E;
+ }
+ }
+ else
+#endif /* WOLFSSL_NO_OCSP_OPTIONAL_CERTS */
+ {
+ Signer* ca = NULL;
+ int sigValid = -1;
+
+ #ifndef NO_SKID
+ ca = GetCA(cm, resp->issuerKeyHash);
+ #else
+ ca = GetCA(cm, resp->issuerHash);
+ #endif
+
+ if (ca) {
+ SignatureCtx sigCtx;
+ InitSignatureCtx(&sigCtx, heap, INVALID_DEVID);
+
+ /* ConfirmSignature is blocking here */
+ sigValid = ConfirmSignature(&sigCtx, resp->response,
+ resp->responseSz, ca->publicKey, ca->pubKeySize, ca->keyOID,
+ resp->sig, resp->sigSz, resp->sigOID);
+ }
+ if (ca == NULL || sigValid != 0) {
+ WOLFSSL_MSG("\tOCSP Confirm signature failed");
+ return ASN_OCSP_CONFIRM_E;
+ }
+
+ (void)noVerify;
+ }
+
+ *ioIndex = idx;
+ return 0;
+}
+
+
+void InitOcspResponse(OcspResponse* resp, CertStatus* status,
+ byte* source, word32 inSz)
+{
+ WOLFSSL_ENTER("InitOcspResponse");
+
+ XMEMSET(status, 0, sizeof(CertStatus));
+ XMEMSET(resp, 0, sizeof(OcspResponse));
+
+ resp->responseStatus = -1;
+ resp->status = status;
+ resp->source = source;
+ resp->maxIdx = inSz;
+}
+
+
+int OcspResponseDecode(OcspResponse* resp, void* cm, void* heap, int noVerify)
+{
+ int ret;
+ int length = 0;
+ word32 idx = 0;
+ byte* source = resp->source;
+ word32 size = resp->maxIdx;
+ word32 oid;
+
+ WOLFSSL_ENTER("OcspResponseDecode");
+
+ /* peel the outer SEQUENCE wrapper */
+ if (GetSequence(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+
+ /* First get the responseStatus, an ENUMERATED */
+ if (GetEnumerated(source, &idx, &resp->responseStatus) < 0)
+ return ASN_PARSE_E;
+
+ if (resp->responseStatus != OCSP_SUCCESSFUL)
+ return 0;
+
+ /* Next is an EXPLICIT record called ResponseBytes, OPTIONAL */
+ if (idx >= size)
+ return ASN_INPUT_E;
+ if (source[idx++] != (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC))
+ return ASN_PARSE_E;
+ if (GetLength(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+
+ /* Get the responseBytes SEQUENCE */
+ if (GetSequence(source, &idx, &length, size) < 0)
+ return ASN_PARSE_E;
+
+ /* Check ObjectID for the resposeBytes */
+ if (GetObjectId(source, &idx, &oid, oidOcspType, size) < 0)
+ return ASN_PARSE_E;
+ if (oid != OCSP_BASIC_OID)
+ return ASN_PARSE_E;
+ ret = GetOctetString(source, &idx, &length, size);
+ if (ret < 0)
+ return ret;
+
+ ret = DecodeBasicOcspResponse(source, &idx, resp, size, cm, heap, noVerify);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+
+word32 EncodeOcspRequestExtensions(OcspRequest* req, byte* output, word32 size)
+{
+ static const byte NonceObjId[] = { 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07,
+ 0x30, 0x01, 0x02 };
+ byte seqArray[5][MAX_SEQ_SZ];
+ word32 seqSz[5], totalSz = (word32)sizeof(NonceObjId);
+
+ WOLFSSL_ENTER("SetOcspReqExtensions");
+
+ if (!req || !output || !req->nonceSz)
+ return 0;
+
+ totalSz += req->nonceSz;
+ totalSz += seqSz[0] = SetOctetString(req->nonceSz, seqArray[0]);
+ totalSz += seqSz[1] = SetOctetString(req->nonceSz + seqSz[0], seqArray[1]);
+ totalSz += seqSz[2] = SetObjectId(sizeof(NonceObjId), seqArray[2]);
+ totalSz += seqSz[3] = SetSequence(totalSz, seqArray[3]);
+ totalSz += seqSz[4] = SetSequence(totalSz, seqArray[4]);
+
+ if (totalSz > size)
+ return 0;
+
+ totalSz = 0;
+
+ XMEMCPY(output + totalSz, seqArray[4], seqSz[4]);
+ totalSz += seqSz[4];
+
+ XMEMCPY(output + totalSz, seqArray[3], seqSz[3]);
+ totalSz += seqSz[3];
+
+ XMEMCPY(output + totalSz, seqArray[2], seqSz[2]);
+ totalSz += seqSz[2];
+
+ XMEMCPY(output + totalSz, NonceObjId, sizeof(NonceObjId));
+ totalSz += (word32)sizeof(NonceObjId);
+
+ XMEMCPY(output + totalSz, seqArray[1], seqSz[1]);
+ totalSz += seqSz[1];
+
+ XMEMCPY(output + totalSz, seqArray[0], seqSz[0]);
+ totalSz += seqSz[0];
+
+ XMEMCPY(output + totalSz, req->nonce, req->nonceSz);
+ totalSz += req->nonceSz;
+
+ return totalSz;
+}
+
+
+int EncodeOcspRequest(OcspRequest* req, byte* output, word32 size)
+{
+ byte seqArray[5][MAX_SEQ_SZ];
+ /* The ASN.1 of the OCSP Request is an onion of sequences */
+ byte algoArray[MAX_ALGO_SZ];
+ byte issuerArray[MAX_ENCODED_DIG_SZ];
+ byte issuerKeyArray[MAX_ENCODED_DIG_SZ];
+ byte snArray[MAX_SN_SZ];
+ byte extArray[MAX_OCSP_EXT_SZ];
+ word32 seqSz[5], algoSz, issuerSz, issuerKeySz, extSz, totalSz;
+ int i, snSz;
+
+ WOLFSSL_ENTER("EncodeOcspRequest");
+
+#ifdef NO_SHA
+ algoSz = SetAlgoID(SHA256h, algoArray, oidHashType, 0);
+#else
+ algoSz = SetAlgoID(SHAh, algoArray, oidHashType, 0);
+#endif
+
+ issuerSz = SetDigest(req->issuerHash, KEYID_SIZE, issuerArray);
+ issuerKeySz = SetDigest(req->issuerKeyHash, KEYID_SIZE, issuerKeyArray);
+ snSz = SetSerialNumber(req->serial, req->serialSz, snArray, MAX_SN_SZ);
+ extSz = 0;
+
+ if (snSz < 0)
+ return snSz;
+
+ if (req->nonceSz) {
+ /* TLS Extensions use this function too - put extensions after
+ * ASN.1: Context Specific [2].
+ */
+ extSz = EncodeOcspRequestExtensions(req, extArray + 2,
+ OCSP_NONCE_EXT_SZ);
+ extSz += SetExplicit(2, extSz, extArray);
+ }
+
+ totalSz = algoSz + issuerSz + issuerKeySz + snSz;
+ for (i = 4; i >= 0; i--) {
+ seqSz[i] = SetSequence(totalSz, seqArray[i]);
+ totalSz += seqSz[i];
+ if (i == 2) totalSz += extSz;
+ }
+
+ if (output == NULL)
+ return totalSz;
+ if (totalSz > size)
+ return BUFFER_E;
+
+ totalSz = 0;
+ for (i = 0; i < 5; i++) {
+ XMEMCPY(output + totalSz, seqArray[i], seqSz[i]);
+ totalSz += seqSz[i];
+ }
+
+ XMEMCPY(output + totalSz, algoArray, algoSz);
+ totalSz += algoSz;
+
+ XMEMCPY(output + totalSz, issuerArray, issuerSz);
+ totalSz += issuerSz;
+
+ XMEMCPY(output + totalSz, issuerKeyArray, issuerKeySz);
+ totalSz += issuerKeySz;
+
+ XMEMCPY(output + totalSz, snArray, snSz);
+ totalSz += snSz;
+
+ if (extSz != 0) {
+ XMEMCPY(output + totalSz, extArray, extSz);
+ totalSz += extSz;
+ }
+
+ return totalSz;
+}
+
+
+int InitOcspRequest(OcspRequest* req, DecodedCert* cert, byte useNonce,
+ void* heap)
+{
+ int ret;
+
+ WOLFSSL_ENTER("InitOcspRequest");
+
+ if (req == NULL)
+ return BAD_FUNC_ARG;
+
+ ForceZero(req, sizeof(OcspRequest));
+ req->heap = heap;
+
+ if (cert) {
+ XMEMCPY(req->issuerHash, cert->issuerHash, KEYID_SIZE);
+ XMEMCPY(req->issuerKeyHash, cert->issuerKeyHash, KEYID_SIZE);
+
+ req->serial = (byte*)XMALLOC(cert->serialSz, req->heap,
+ DYNAMIC_TYPE_OCSP_REQUEST);
+ if (req->serial == NULL)
+ return MEMORY_E;
+
+ XMEMCPY(req->serial, cert->serial, cert->serialSz);
+ req->serialSz = cert->serialSz;
+
+ if (cert->extAuthInfoSz != 0 && cert->extAuthInfo != NULL) {
+ req->url = (byte*)XMALLOC(cert->extAuthInfoSz, req->heap,
+ DYNAMIC_TYPE_OCSP_REQUEST);
+ if (req->url == NULL) {
+ XFREE(req->serial, req->heap, DYNAMIC_TYPE_OCSP);
+ return MEMORY_E;
+ }
+
+ XMEMCPY(req->url, cert->extAuthInfo, cert->extAuthInfoSz);
+ req->urlSz = cert->extAuthInfoSz;
+ }
+ }
+
+ if (useNonce) {
+ WC_RNG rng;
+
+ #ifndef HAVE_FIPS
+ ret = wc_InitRng_ex(&rng, req->heap, INVALID_DEVID);
+ #else
+ ret = wc_InitRng(&rng);
+ #endif
+ if (ret != 0) {
+ WOLFSSL_MSG("\tCannot initialize RNG. Skipping the OSCP Nonce.");
+ } else {
+ if (wc_RNG_GenerateBlock(&rng, req->nonce, MAX_OCSP_NONCE_SZ) != 0)
+ WOLFSSL_MSG("\tCannot run RNG. Skipping the OSCP Nonce.");
+ else
+ req->nonceSz = MAX_OCSP_NONCE_SZ;
+
+ wc_FreeRng(&rng);
+ }
+ }
+
+ return 0;
+}
+
+void FreeOcspRequest(OcspRequest* req)
+{
+ WOLFSSL_ENTER("FreeOcspRequest");
+
+ if (req) {
+ if (req->serial)
+ XFREE(req->serial, req->heap, DYNAMIC_TYPE_OCSP_REQUEST);
+
+ if (req->url)
+ XFREE(req->url, req->heap, DYNAMIC_TYPE_OCSP_REQUEST);
+ }
+}
+
+
+int CompareOcspReqResp(OcspRequest* req, OcspResponse* resp)
+{
+ int cmp;
+
+ WOLFSSL_ENTER("CompareOcspReqResp");
+
+ if (req == NULL)
+ {
+ WOLFSSL_MSG("\tReq missing");
+ return -1;
+ }
+
+ if (resp == NULL)
+ {
+ WOLFSSL_MSG("\tResp missing");
+ return 1;
+ }
+
+ /* Nonces are not critical. The responder may not necessarily add
+ * the nonce to the response. */
+ if (resp->nonceSz != 0) {
+ cmp = req->nonceSz - resp->nonceSz;
+ if (cmp != 0)
+ {
+ WOLFSSL_MSG("\tnonceSz mismatch");
+ return cmp;
+ }
+
+ cmp = XMEMCMP(req->nonce, resp->nonce, req->nonceSz);
+ if (cmp != 0)
+ {
+ WOLFSSL_MSG("\tnonce mismatch");
+ return cmp;
+ }
+ }
+
+ cmp = XMEMCMP(req->issuerHash, resp->issuerHash, KEYID_SIZE);
+ if (cmp != 0)
+ {
+ WOLFSSL_MSG("\tissuerHash mismatch");
+ return cmp;
+ }
+
+ cmp = XMEMCMP(req->issuerKeyHash, resp->issuerKeyHash, KEYID_SIZE);
+ if (cmp != 0)
+ {
+ WOLFSSL_MSG("\tissuerKeyHash mismatch");
+ return cmp;
+ }
+
+ cmp = req->serialSz - resp->status->serialSz;
+ if (cmp != 0)
+ {
+ WOLFSSL_MSG("\tserialSz mismatch");
+ return cmp;
+ }
+
+ cmp = XMEMCMP(req->serial, resp->status->serial, req->serialSz);
+ if (cmp != 0)
+ {
+ WOLFSSL_MSG("\tserial mismatch");
+ return cmp;
+ }
+
+ return 0;
+}
+
+#endif
+
+
+/* store WC_SHA hash of NAME */
+WOLFSSL_LOCAL int GetNameHash(const byte* source, word32* idx, byte* hash,
+ int maxIdx)
+{
+ int length; /* length of all distinguished names */
+ int ret;
+ word32 dummy;
+
+ WOLFSSL_ENTER("GetNameHash");
+
+ if (source[*idx] == ASN_OBJECT_ID) {
+ WOLFSSL_MSG("Trying optional prefix...");
+
+ if (GetLength(source, idx, &length, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ *idx += length;
+ WOLFSSL_MSG("Got optional prefix");
+ }
+
+ /* For OCSP, RFC2560 section 4.1.1 states the issuer hash should be
+ * calculated over the entire DER encoding of the Name field, including
+ * the tag and length. */
+ dummy = *idx;
+ if (GetSequence(source, idx, &length, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+#ifdef NO_SHA
+ ret = wc_Sha256Hash(source + dummy, length + *idx - dummy, hash);
+#else
+ ret = wc_ShaHash(source + dummy, length + *idx - dummy, hash);
+#endif
+
+ *idx += length;
+
+ return ret;
+}
+
+
+#ifdef HAVE_CRL
+
+/* initialize decoded CRL */
+void InitDecodedCRL(DecodedCRL* dcrl, void* heap)
+{
+ WOLFSSL_MSG("InitDecodedCRL");
+
+ dcrl->certBegin = 0;
+ dcrl->sigIndex = 0;
+ dcrl->sigLength = 0;
+ dcrl->signatureOID = 0;
+ dcrl->certs = NULL;
+ dcrl->totalCerts = 0;
+ dcrl->heap = heap;
+ #ifdef WOLFSSL_HEAP_TEST
+ dcrl->heap = (void*)WOLFSSL_HEAP_TEST;
+ #endif
+}
+
+
+/* free decoded CRL resources */
+void FreeDecodedCRL(DecodedCRL* dcrl)
+{
+ RevokedCert* tmp = dcrl->certs;
+
+ WOLFSSL_MSG("FreeDecodedCRL");
+
+ while(tmp) {
+ RevokedCert* next = tmp->next;
+ XFREE(tmp, dcrl->heap, DYNAMIC_TYPE_REVOKED);
+ tmp = next;
+ }
+}
+
+
+/* Get Revoked Cert list, 0 on success */
+static int GetRevoked(const byte* buff, word32* idx, DecodedCRL* dcrl,
+ int maxIdx)
+{
+ int ret, len;
+ word32 end;
+ byte b;
+ RevokedCert* rc;
+
+ WOLFSSL_ENTER("GetRevoked");
+
+ if (GetSequence(buff, idx, &len, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ end = *idx + len;
+
+ rc = (RevokedCert*)XMALLOC(sizeof(RevokedCert), dcrl->heap,
+ DYNAMIC_TYPE_REVOKED);
+ if (rc == NULL) {
+ WOLFSSL_MSG("Alloc Revoked Cert failed");
+ return MEMORY_E;
+ }
+
+ if (GetSerialNumber(buff, idx, rc->serialNumber, &rc->serialSz,
+ maxIdx) < 0) {
+ XFREE(rc, dcrl->heap, DYNAMIC_TYPE_REVOKED);
+ return ASN_PARSE_E;
+ }
+
+ /* add to list */
+ rc->next = dcrl->certs;
+ dcrl->certs = rc;
+ dcrl->totalCerts++;
+
+ /* get date */
+ ret = GetDateInfo(buff, idx, NULL, &b, NULL, maxIdx);
+ if (ret < 0) {
+ WOLFSSL_MSG("Expecting Date");
+ return ret;
+ }
+
+ if (*idx != end) /* skip extensions */
+ *idx = end;
+
+ return 0;
+}
+
+
+/* Get CRL Signature, 0 on success */
+static int GetCRL_Signature(const byte* source, word32* idx, DecodedCRL* dcrl,
+ int maxIdx)
+{
+ int length;
+ int ret;
+
+ WOLFSSL_ENTER("GetCRL_Signature");
+
+ ret = CheckBitString(source, idx, &length, maxIdx, 1, NULL);
+ if (ret != 0)
+ return ret;
+ dcrl->sigLength = length;
+
+ dcrl->signature = (byte*)&source[*idx];
+ *idx += dcrl->sigLength;
+
+ return 0;
+}
+
+int VerifyCRL_Signature(SignatureCtx* sigCtx, const byte* toBeSigned,
+ word32 tbsSz, const byte* signature, word32 sigSz,
+ word32 signatureOID, Signer *ca, void* heap)
+{
+ /* try to confirm/verify signature */
+#ifndef IGNORE_KEY_EXTENSIONS
+ if ((ca->keyUsage & KEYUSE_CRL_SIGN) == 0) {
+ WOLFSSL_MSG("CA cannot sign CRLs");
+ return ASN_CRL_NO_SIGNER_E;
+ }
+#endif /* IGNORE_KEY_EXTENSIONS */
+
+ InitSignatureCtx(sigCtx, heap, INVALID_DEVID);
+ if (ConfirmSignature(sigCtx, toBeSigned, tbsSz, ca->publicKey,
+ ca->pubKeySize, ca->keyOID, signature, sigSz,
+ signatureOID) != 0) {
+ WOLFSSL_MSG("CRL Confirm signature failed");
+ return ASN_CRL_CONFIRM_E;
+ }
+
+ return 0;
+}
+
+/* prase crl buffer into decoded state, 0 on success */
+int ParseCRL(DecodedCRL* dcrl, const byte* buff, word32 sz, void* cm)
+{
+ int version, len, doNextDate = 1;
+ word32 oid, idx = 0, dateIdx;
+ Signer* ca = NULL;
+ SignatureCtx sigCtx;
+
+ WOLFSSL_MSG("ParseCRL");
+
+ /* raw crl hash */
+ /* hash here if needed for optimized comparisons
+ * wc_Sha sha;
+ * wc_InitSha(&sha);
+ * wc_ShaUpdate(&sha, buff, sz);
+ * wc_ShaFinal(&sha, dcrl->crlHash); */
+
+ if (GetSequence(buff, &idx, &len, sz) < 0)
+ return ASN_PARSE_E;
+
+ dcrl->certBegin = idx;
+
+ if (GetSequence(buff, &idx, &len, sz) < 0)
+ return ASN_PARSE_E;
+ dcrl->sigIndex = len + idx;
+
+ /* may have version */
+ if (buff[idx] == ASN_INTEGER) {
+ if (GetMyVersion(buff, &idx, &version, sz) < 0)
+ return ASN_PARSE_E;
+ }
+
+ if (GetAlgoId(buff, &idx, &oid, oidIgnoreType, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetNameHash(buff, &idx, dcrl->issuerHash, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetBasicDate(buff, &idx, dcrl->lastDate, &dcrl->lastDateFormat, sz) < 0)
+ return ASN_PARSE_E;
+
+ dateIdx = idx;
+
+ if (GetBasicDate(buff, &idx, dcrl->nextDate, &dcrl->nextDateFormat, sz) < 0)
+ {
+#ifndef WOLFSSL_NO_CRL_NEXT_DATE
+ (void)dateIdx;
+ return ASN_PARSE_E;
+#else
+ dcrl->nextDateFormat = ASN_OTHER_TYPE; /* skip flag */
+ doNextDate = 0;
+ idx = dateIdx;
+#endif
+ }
+
+ if (doNextDate) {
+#ifndef NO_ASN_TIME
+ if (!XVALIDATE_DATE(dcrl->nextDate, dcrl->nextDateFormat, AFTER)) {
+ WOLFSSL_MSG("CRL after date is no longer valid");
+ return ASN_AFTER_DATE_E;
+ }
+#endif
+ }
+
+ if (idx != dcrl->sigIndex && buff[idx] != CRL_EXTENSIONS) {
+ if (GetSequence(buff, &idx, &len, sz) < 0)
+ return ASN_PARSE_E;
+
+ len += idx;
+
+ while (idx < (word32)len) {
+ if (GetRevoked(buff, &idx, dcrl, sz) < 0)
+ return ASN_PARSE_E;
+ }
+ }
+
+ if (idx != dcrl->sigIndex)
+ idx = dcrl->sigIndex; /* skip extensions */
+
+ if (GetAlgoId(buff, &idx, &dcrl->signatureOID, oidSigType, sz) < 0)
+ return ASN_PARSE_E;
+
+ if (GetCRL_Signature(buff, &idx, dcrl, sz) < 0)
+ return ASN_PARSE_E;
+
+ /* openssl doesn't add skid by default for CRLs cause firefox chokes
+ we're not assuming it's available yet */
+#if !defined(NO_SKID) && defined(CRL_SKID_READY)
+ if (dcrl->extAuthKeyIdSet)
+ ca = GetCA(cm, dcrl->extAuthKeyId);
+ if (ca == NULL)
+ ca = GetCAByName(cm, dcrl->issuerHash);
+#else
+ ca = GetCA(cm, dcrl->issuerHash);
+#endif /* !NO_SKID && CRL_SKID_READY */
+ WOLFSSL_MSG("About to verify CRL signature");
+
+ if (ca == NULL) {
+ WOLFSSL_MSG("Did NOT find CRL issuer CA");
+ return ASN_CRL_NO_SIGNER_E;
+ }
+
+ WOLFSSL_MSG("Found CRL issuer CA");
+ return VerifyCRL_Signature(&sigCtx, buff + dcrl->certBegin,
+ dcrl->sigIndex - dcrl->certBegin, dcrl->signature, dcrl->sigLength,
+ dcrl->signatureOID, ca, dcrl->heap);
+}
+
+#endif /* HAVE_CRL */
+
+#undef ERROR_OUT
+
+#endif /* !NO_ASN */
+
+#ifdef WOLFSSL_SEP
+
+
+#endif /* WOLFSSL_SEP */
+