wolf SSL
wolfSSL 3.11.1 for TLS1.3 beta
Diff: wolfcrypt/src/asn.c
- Revision:
- 13:80fb167dafdf
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfcrypt/src/asn.c Tue May 30 06:16:19 2017 +0000
@@ -0,0 +1,10834 @@
+/* asn.c
+ *
+ * Copyright (C) 2006-2016 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.
+*/
+
+#ifndef NO_ASN
+
+#ifdef HAVE_RTP_SYS
+ #include "os.h" /* dc_rtc_api needs */
+ #include "dc_rtc_api.h" /* to get current time */
+#endif
+
+#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/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_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
+
+#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; }
+
+#ifndef NO_ASN_TIME
+#if defined(USER_TIME)
+ /* Use our gmtime and time_t/struct tm types.
+ Only needs seconds since EPOCH using XTIME function.
+ time_t XTIME(time_t * timer) {}
+ */
+ #define WOLFSSL_GMTIME
+ #define USE_WOLF_TM
+ #define USE_WOLF_TIME_T
+
+#elif defined(TIME_OVERRIDES)
+ /* Override XTIME() and XGMTIME() functionality.
+ Requires user to provide these functions:
+ time_t XTIME(time_t * timer) {}
+ struct tm* XGMTIME(const time_t* timer, struct tm* tmp) {}
+ */
+ #ifndef HAVE_TIME_T_TYPE
+ #define USE_WOLF_TIME_T
+ #endif
+ #ifndef HAVE_TM_TYPE
+ #define USE_WOLF_TM
+ #endif
+ #define NEED_TMP_TIME
+
+#elif defined(HAVE_RTP_SYS)
+ /* uses parital <time.h> structures */
+ #define XTIME(tl) (0)
+ #define XGMTIME(c, t) rtpsys_gmtime((c))
+
+#elif defined(MICRIUM)
+ #if (NET_SECURE_MGR_CFG_EN == DEF_ENABLED)
+ #define XVALIDATE_DATE(d, f, t) NetSecure_ValidateDateHandler((d), (f), (t))
+ #else
+ #define XVALIDATE_DATE(d, f, t) (0)
+ #endif
+ #define NO_TIME_H
+ /* since Micrium not defining XTIME or XGMTIME, CERT_GEN not available */
+
+#elif defined(MICROCHIP_TCPIP_V5) || defined(MICROCHIP_TCPIP)
+ #include <time.h>
+ #define XTIME(t1) pic32_time((t1))
+ #define XGMTIME(c, t) gmtime((c))
+
+#elif defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
+ #define XTIME(t1) mqx_time((t1))
+ #define HAVE_GMTIME_R
+
+#elif defined(FREESCALE_KSDK_BM) || defined(FREESCALE_FREE_RTOS) || defined(FREESCALE_KSDK_FREERTOS)
+ #include <time.h>
+ #ifndef XTIME
+ #define XTIME(t1) ksdk_time((t1))
+ #endif
+ #define XGMTIME(c, t) gmtime((c))
+
+#elif defined(WOLFSSL_ATMEL)
+ #define XTIME(t1) atmel_get_curr_time_and_date((t1))
+ #define WOLFSSL_GMTIME
+ #define USE_WOLF_TM
+ #define USE_WOLF_TIME_T
+
+#elif defined(IDIRECT_DEV_TIME)
+ /*Gets the timestamp from cloak software owned by VT iDirect
+ in place of time() from <time.h> */
+ #include <time.h>
+ #define XTIME(t1) idirect_time((t1))
+ #define XGMTIME(c, t) gmtime((c))
+
+#elif defined(_WIN32_WCE)
+ #include <windows.h>
+ #define XTIME(t1) windows_time((t1))
+ #define WOLFSSL_GMTIME
+
+#else
+ /* default */
+ /* uses complete <time.h> facility */
+ #include <time.h>
+#endif
+
+
+/* Map default time functions */
+#if !defined(XTIME) && !defined(TIME_OVERRIDES) && !defined(USER_TIME)
+ #define XTIME(tl) time((tl))
+#endif
+#if !defined(XGMTIME) && !defined(TIME_OVERRIDES)
+ #if defined(WOLFSSL_GMTIME) || !defined(HAVE_GMTIME_R)
+ #define XGMTIME(c, t) gmtime((c))
+ #else
+ #define XGMTIME(c, t) gmtime_r((c), (t))
+ #define NEED_TMP_TIME
+ #endif
+#endif
+#if !defined(XVALIDATE_DATE) && !defined(HAVE_VALIDATE_DATE)
+ #define USE_WOLF_VALIDDATE
+ #define XVALIDATE_DATE(d, f, t) ValidateDate((d), (f), (t))
+#endif
+
+/* wolf struct tm and time_t */
+#if defined(USE_WOLF_TM)
+ struct tm {
+ int tm_sec; /* seconds after the minute [0-60] */
+ int tm_min; /* minutes after the hour [0-59] */
+ int tm_hour; /* hours since midnight [0-23] */
+ int tm_mday; /* day of the month [1-31] */
+ int tm_mon; /* months since January [0-11] */
+ int tm_year; /* years since 1900 */
+ int tm_wday; /* days since Sunday [0-6] */
+ int tm_yday; /* days since January 1 [0-365] */
+ int tm_isdst; /* Daylight Savings Time flag */
+ long tm_gmtoff; /* offset from CUT in seconds */
+ char *tm_zone; /* timezone abbreviation */
+ };
+#endif /* USE_WOLF_TM */
+#if defined(USE_WOLF_TIME_T)
+ typedef long time_t;
+#endif
+
+/* forward declarations */
+#if defined(USER_TIME)
+ struct tm* gmtime(const time_t* timer);
+ extern time_t XTIME(time_t * timer);
+
+ #ifdef STACK_TRAP
+ /* for stack trap tracking, don't call os gmtime on OS X/linux,
+ uses a lot of stack spce */
+ extern time_t time(time_t * timer);
+ #define XTIME(tl) time((tl))
+ #endif /* STACK_TRAP */
+
+#elif defined(TIME_OVERRIDES)
+ extern time_t XTIME(time_t * timer);
+ extern struct tm* XGMTIME(const time_t* timer, struct tm* tmp);
+#elif defined(WOLFSSL_GMTIME)
+ struct tm* gmtime(const time_t* timer);
+#endif
+
+#if defined(FREESCALE_KSDK_BM) || defined(FREESCALE_FREE_RTOS)
+ /* extern time_t ksdk_time(time_t* timer); */
+#endif /* FREESCALE_KSDK_BM || FREESCALE_FREE_RTOS */
+
+
+#if defined(_WIN32_WCE)
+time_t windows_time(time_t* timer)
+{
+ SYSTEMTIME sysTime;
+ FILETIME fTime;
+ ULARGE_INTEGER intTime;
+ time_t localTime;
+
+ if (timer == NULL)
+ timer = &localTime;
+
+ GetSystemTime(&sysTime);
+ SystemTimeToFileTime(&sysTime, &fTime);
+
+ XMEMCPY(&intTime, &fTime, sizeof(FILETIME));
+ /* subtract EPOCH */
+ intTime.QuadPart -= 0x19db1ded53e8000;
+ /* to secs */
+ intTime.QuadPart /= 10000000;
+ *timer = (time_t)intTime.QuadPart;
+
+ return *timer;
+}
+#endif /* _WIN32_WCE */
+
+#if defined(WOLFSSL_GMTIME)
+struct tm* gmtime(const time_t* timer)
+{
+ #define YEAR0 1900
+ #define EPOCH_YEAR 1970
+ #define SECS_DAY (24L * 60L * 60L)
+ #define LEAPYEAR(year) (!((year) % 4) && (((year) % 100) || !((year) %400)))
+ #define YEARSIZE(year) (LEAPYEAR(year) ? 366 : 365)
+
+ static const int _ytab[2][12] =
+ {
+ {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
+ {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
+ };
+
+ static struct tm st_time;
+ struct tm* ret = &st_time;
+ time_t secs = *timer;
+ unsigned long dayclock, dayno;
+ int year = EPOCH_YEAR;
+
+ dayclock = (unsigned long)secs % SECS_DAY;
+ dayno = (unsigned long)secs / SECS_DAY;
+
+ ret->tm_sec = (int) dayclock % 60;
+ ret->tm_min = (int)(dayclock % 3600) / 60;
+ ret->tm_hour = (int) dayclock / 3600;
+ ret->tm_wday = (int) (dayno + 4) % 7; /* day 0 a Thursday */
+
+ while(dayno >= (unsigned long)YEARSIZE(year)) {
+ dayno -= YEARSIZE(year);
+ year++;
+ }
+
+ ret->tm_year = year - YEAR0;
+ ret->tm_yday = (int)dayno;
+ ret->tm_mon = 0;
+
+ while(dayno >= (unsigned long)_ytab[LEAPYEAR(year)][ret->tm_mon]) {
+ dayno -= _ytab[LEAPYEAR(year)][ret->tm_mon];
+ ret->tm_mon++;
+ }
+
+ ret->tm_mday = (int)++dayno;
+ ret->tm_isdst = 0;
+
+ return ret;
+}
+#endif /* WOLFSSL_GMTIME */
+
+
+#if defined(HAVE_RTP_SYS)
+#define YEAR0 1900
+
+struct tm* rtpsys_gmtime(const time_t* timer) /* has a gmtime() but hangs */
+{
+ static struct tm st_time;
+ struct tm* ret = &st_time;
+
+ DC_RTC_CALENDAR cal;
+ dc_rtc_time_get(&cal, TRUE);
+
+ ret->tm_year = cal.year - YEAR0; /* gm starts at 1900 */
+ ret->tm_mon = cal.month - 1; /* gm starts at 0 */
+ ret->tm_mday = cal.day;
+ ret->tm_hour = cal.hour;
+ ret->tm_min = cal.minute;
+ ret->tm_sec = cal.second;
+
+ return ret;
+}
+
+#endif /* HAVE_RTP_SYS */
+
+
+#if defined(MICROCHIP_TCPIP_V5) || defined(MICROCHIP_TCPIP)
+
+/*
+ * time() is just a stub in Microchip libraries. We need our own
+ * implementation. Use SNTP client to get seconds since epoch.
+ */
+time_t pic32_time(time_t* timer)
+{
+#ifdef MICROCHIP_TCPIP_V5
+ DWORD sec = 0;
+#else
+ uint32_t sec = 0;
+#endif
+ time_t localTime;
+
+ if (timer == NULL)
+ timer = &localTime;
+
+#ifdef MICROCHIP_MPLAB_HARMONY
+ sec = TCPIP_SNTP_UTCSecondsGet();
+#else
+ sec = SNTPGetUTCSeconds();
+#endif
+ *timer = (time_t) sec;
+
+ return *timer;
+}
+
+#endif /* MICROCHIP_TCPIP || MICROCHIP_TCPIP_V5 */
+
+
+#if defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
+
+time_t mqx_time(time_t* timer)
+{
+ time_t localTime;
+ TIME_STRUCT time_s;
+
+ if (timer == NULL)
+ timer = &localTime;
+
+ _time_get(&time_s);
+ *timer = (time_t) time_s.SECONDS;
+
+ return *timer;
+}
+
+#endif /* FREESCALE_MQX || FREESCALE_KSDK_MQX */
+
+
+#if defined(WOLFSSL_TIRTOS)
+
+time_t XTIME(time_t * timer)
+{
+ time_t sec = 0;
+
+ sec = (time_t) Seconds_get();
+
+ if (timer != NULL)
+ *timer = sec;
+
+ return sec;
+}
+
+#endif /* WOLFSSL_TIRTOS */
+
+
+static INLINE word32 btoi(byte b)
+{
+ return (word32)(b - 0x30);
+}
+
+
+/* two byte date/time, add to value */
+static INLINE void GetTime(int* value, const byte* date, int* idx)
+{
+ int i = *idx;
+
+ *value += btoi(date[i++]) * 10;
+ *value += btoi(date[i++]);
+
+ *idx = i;
+}
+
+
+#if defined(MICRIUM)
+
+CPU_INT32S NetSecure_ValidateDateHandler(CPU_INT08U *date, CPU_INT08U format,
+ CPU_INT08U dateType)
+{
+ CPU_BOOLEAN rtn_code;
+ CPU_INT32S i;
+ CPU_INT32S val;
+ CPU_INT16U year;
+ CPU_INT08U month;
+ CPU_INT16U day;
+ CPU_INT08U hour;
+ CPU_INT08U min;
+ CPU_INT08U sec;
+
+ i = 0;
+ year = 0u;
+
+ if (format == ASN_UTC_TIME) {
+ if (btoi(date[0]) >= 5)
+ year = 1900;
+ else
+ year = 2000;
+ }
+ else { /* format == GENERALIZED_TIME */
+ year += btoi(date[i++]) * 1000;
+ year += btoi(date[i++]) * 100;
+ }
+
+ val = year;
+ GetTime(&val, date, &i);
+ year = (CPU_INT16U)val;
+
+ val = 0;
+ GetTime(&val, date, &i);
+ month = (CPU_INT08U)val;
+
+ val = 0;
+ GetTime(&val, date, &i);
+ day = (CPU_INT16U)val;
+
+ val = 0;
+ GetTime(&val, date, &i);
+ hour = (CPU_INT08U)val;
+
+ val = 0;
+ GetTime(&val, date, &i);
+ min = (CPU_INT08U)val;
+
+ val = 0;
+ GetTime(&val, date, &i);
+ sec = (CPU_INT08U)val;
+
+ return NetSecure_ValidateDate(year, month, day, hour, min, sec, dateType);
+}
+
+#endif /* MICRIUM */
+
+
+#if defined(IDIRECT_DEV_TIME)
+
+extern time_t getTimestamp();
+
+time_t idirect_time(time_t * timer)
+{
+ time_t sec = getTimestamp();
+
+ if (timer != NULL)
+ *timer = sec;
+
+ return sec;
+}
+
+#endif /* IDIRECT_DEV_TIME */
+
+#endif /* !NO_ASN_TIME */
+
+
+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;
+ }
+ else if ((input[*inOutIdx] & 0x80) == 0x80)
+ 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(HAVE_ECC) || (!defined(NO_RSA) && (defined(WOLFSSL_CERT_GEN) || (defined(WOLFSSL_KEY_GEN) && !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_KEY_GEN) && !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 && (WOLFSSL_CERT_GEN || (WOLFSSL_KEY_GEN &&
+ !HAVE_USER_RSA))) */
+
+/* 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;
+}
+#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;
+}
+
+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;
+}
+
+#if (!defined(NO_RSA) && (defined(WOLFSSL_CERT_GEN) || \
+ (defined(WOLFSSL_KEY_GEN) && \
+ !defined(HAVE_USER_RSA)))) || \
+ (defined(HAVE_ECC) && (defined(WOLFSSL_CERT_GEN) || \
+ defined(WOLFSSL_KEY_GEN)))
+/* 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;
+}
+
+#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;
+ output[idx++] = (byte)(val >> 8);
+
+ return idx;
+}
+#endif /* WOLFSSL_CERT_EXT */
+#endif /* !NO_RSA && (WOLFSSL_CERT_GEN || (WOLFSSL_KEY_GEN &&
+ !HAVE_USER_RSA)) */
+
+
+
+/* hashType */
+static const byte hashMd2hOid[] = {42, 134, 72, 134, 247, 13, 2, 2};
+static const byte hashMd5hOid[] = {42, 134, 72, 134, 247, 13, 2, 5};
+static const byte hashSha1hOid[] = {43, 14, 3, 2, 26};
+static const byte hashSha224hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 4};
+static const byte hashSha256hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 1};
+static const byte hashSha384hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 2};
+static const byte hashSha512hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 3};
+
+/* sigType */
+#ifndef NO_DSA
+ static const byte sigSha1wDsaOid[] = {42, 134, 72, 206, 56, 4, 3};
+#endif /* NO_DSA */
+#ifndef NO_RSA
+ static const byte sigMd2wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 2};
+ static const byte sigMd5wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 4};
+ static const byte sigSha1wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 5};
+ static const byte sigSha224wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,14};
+ static const byte sigSha256wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,11};
+ static const byte sigSha384wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,12};
+ static const byte sigSha512wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,13};
+#endif /* NO_RSA */
+#ifdef HAVE_ECC
+ static const byte sigSha1wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 1};
+ static const byte sigSha224wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 1};
+ static const byte sigSha256wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 2};
+ static const byte sigSha384wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 3};
+ static const byte sigSha512wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 4};
+#endif /* HAVE_ECC */
+
+/* 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 */
+
+/* curveType */
+#ifdef HAVE_ECC
+ /* See "ecc_sets" table in ecc.c */
+#endif /* HAVE_ECC */
+
+/* blkType */
+static const byte blkAes128CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 2};
+static const byte blkAes192CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 22};
+static const byte blkAes256CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 42};
+static const byte blkDesCbcOid[] = {43, 14, 3, 2, 7};
+static const byte blkDes3CbcOid[] = {42, 134, 72, 134, 247, 13, 3, 7};
+
+/* keyWrapType */
+static const byte wrapAes128Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 5};
+static const byte wrapAes192Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 25};
+static const byte wrapAes256Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 45};
+
+/* cmsKeyAgreeType */
+static const byte dhSinglePass_stdDH_sha1kdf_Oid[] =
+ {43, 129, 5, 16, 134, 72, 63, 0, 2};
+static const byte dhSinglePass_stdDH_sha224kdf_Oid[] = {43, 129, 4, 1, 11, 0};
+static const byte dhSinglePass_stdDH_sha256kdf_Oid[] = {43, 129, 4, 1, 11, 1};
+static const byte dhSinglePass_stdDH_sha384kdf_Oid[] = {43, 129, 4, 1, 11, 2};
+static const byte dhSinglePass_stdDH_sha512kdf_Oid[] = {43, 129, 4, 1, 11, 3};
+
+/* 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};
+static const byte extNameConsOid[] = {85, 29, 30};
+
+/* certAuthInfoType */
+static const byte extAuthInfoOcspOid[] = {43, 6, 1, 5, 5, 7, 48, 1};
+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 extExtKeyUsageOcspSignOid[] = {43, 6, 1, 5, 5, 7, 3, 9};
+
+/* kdfType */
+static const byte pbkdf2Oid[] = {42, 134, 72, 134, 247, 13, 1, 5, 12};
+
+static const byte* OidFromId(word32 id, word32 type, word32* oidSz)
+{
+ const byte* oid = NULL;
+
+ *oidSz = 0;
+
+ switch (type) {
+
+ case oidHashType:
+ switch (id) {
+ case MD2h:
+ oid = hashMd2hOid;
+ *oidSz = sizeof(hashMd2hOid);
+ break;
+ case MD5h:
+ oid = hashMd5hOid;
+ *oidSz = sizeof(hashMd5hOid);
+ break;
+ case SHAh:
+ oid = hashSha1hOid;
+ *oidSz = sizeof(hashSha1hOid);
+ break;
+ case SHA224h:
+ oid = hashSha224hOid;
+ *oidSz = sizeof(hashSha224hOid);
+ break;
+ case SHA256h:
+ oid = hashSha256hOid;
+ *oidSz = sizeof(hashSha256hOid);
+ break;
+ case SHA384h:
+ oid = hashSha384hOid;
+ *oidSz = sizeof(hashSha384hOid);
+ break;
+ case SHA512h:
+ oid = hashSha512hOid;
+ *oidSz = sizeof(hashSha512hOid);
+ break;
+ }
+ break;
+
+ case oidSigType:
+ switch (id) {
+ #ifndef NO_DSA
+ case CTC_SHAwDSA:
+ oid = sigSha1wDsaOid;
+ *oidSz = sizeof(sigSha1wDsaOid);
+ break;
+ #endif /* NO_DSA */
+ #ifndef NO_RSA
+ case CTC_MD2wRSA:
+ oid = sigMd2wRsaOid;
+ *oidSz = sizeof(sigMd2wRsaOid);
+ break;
+ case CTC_MD5wRSA:
+ oid = sigMd5wRsaOid;
+ *oidSz = sizeof(sigMd5wRsaOid);
+ break;
+ case CTC_SHAwRSA:
+ oid = sigSha1wRsaOid;
+ *oidSz = sizeof(sigSha1wRsaOid);
+ break;
+ case CTC_SHA224wRSA:
+ oid = sigSha224wRsaOid;
+ *oidSz = sizeof(sigSha224wRsaOid);
+ break;
+ case CTC_SHA256wRSA:
+ oid = sigSha256wRsaOid;
+ *oidSz = sizeof(sigSha256wRsaOid);
+ break;
+ case CTC_SHA384wRSA:
+ oid = sigSha384wRsaOid;
+ *oidSz = sizeof(sigSha384wRsaOid);
+ break;
+ case CTC_SHA512wRSA:
+ oid = sigSha512wRsaOid;
+ *oidSz = sizeof(sigSha512wRsaOid);
+ break;
+ #endif /* NO_RSA */
+ #ifdef HAVE_ECC
+ case CTC_SHAwECDSA:
+ oid = sigSha1wEcdsaOid;
+ *oidSz = sizeof(sigSha1wEcdsaOid);
+ break;
+ case CTC_SHA224wECDSA:
+ oid = sigSha224wEcdsaOid;
+ *oidSz = sizeof(sigSha224wEcdsaOid);
+ break;
+ case CTC_SHA256wECDSA:
+ oid = sigSha256wEcdsaOid;
+ *oidSz = sizeof(sigSha256wEcdsaOid);
+ break;
+ case CTC_SHA384wECDSA:
+ oid = sigSha384wEcdsaOid;
+ *oidSz = sizeof(sigSha384wEcdsaOid);
+ break;
+ case CTC_SHA512wECDSA:
+ oid = sigSha512wEcdsaOid;
+ *oidSz = sizeof(sigSha512wEcdsaOid);
+ break;
+ #endif /* HAVE_ECC */
+ 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 */
+ 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) {
+ case AES128CBCb:
+ oid = blkAes128CbcOid;
+ *oidSz = sizeof(blkAes128CbcOid);
+ break;
+ case AES192CBCb:
+ oid = blkAes192CbcOid;
+ *oidSz = sizeof(blkAes192CbcOid);
+ break;
+ case AES256CBCb:
+ oid = blkAes256CbcOid;
+ *oidSz = sizeof(blkAes256CbcOid);
+ break;
+ case DESb:
+ oid = blkDesCbcOid;
+ *oidSz = sizeof(blkDesCbcOid);
+ break;
+ case DES3b:
+ oid = blkDes3CbcOid;
+ *oidSz = sizeof(blkDes3CbcOid);
+ break;
+ }
+ 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;
+ case NAME_CONS_OID:
+ oid = extNameConsOid;
+ *oidSz = sizeof(extNameConsOid);
+ break;
+ }
+ break;
+
+ case oidCertAuthInfoType:
+ switch (id) {
+ case AIA_OCSP_OID:
+ oid = extAuthInfoOcspOid;
+ *oidSz = sizeof(extAuthInfoOcspOid);
+ break;
+ 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_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 oidKeyWrapType:
+ switch (id) {
+ case AES128_WRAP:
+ oid = wrapAes128Oid;
+ *oidSz = sizeof(wrapAes128Oid);
+ break;
+ case AES192_WRAP:
+ oid = wrapAes192Oid;
+ *oidSz = sizeof(wrapAes192Oid);
+ break;
+ case AES256_WRAP:
+ oid = wrapAes256Oid;
+ *oidSz = sizeof(wrapAes256Oid);
+ break;
+ }
+ break;
+
+ case oidCmsKeyAgreeType:
+ switch (id) {
+ case dhSinglePass_stdDH_sha1kdf_scheme:
+ oid = dhSinglePass_stdDH_sha1kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha1kdf_Oid);
+ break;
+ case dhSinglePass_stdDH_sha224kdf_scheme:
+ oid = dhSinglePass_stdDH_sha224kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha224kdf_Oid);
+ break;
+ case dhSinglePass_stdDH_sha256kdf_scheme:
+ oid = dhSinglePass_stdDH_sha256kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha256kdf_Oid);
+ break;
+ case dhSinglePass_stdDH_sha384kdf_scheme:
+ oid = dhSinglePass_stdDH_sha384kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha384kdf_Oid);
+ break;
+ case dhSinglePass_stdDH_sha512kdf_scheme:
+ oid = dhSinglePass_stdDH_sha512kdf_Oid;
+ *oidSz = sizeof(dhSinglePass_stdDH_sha512kdf_Oid);
+ break;
+ }
+ break;
+
+ 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
+ int 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;
+}
+
+
+#if defined(HAVE_ECC) || (!defined(NO_RSA) && !defined(HAVE_USER_RSA) && (defined(OPENSSL_EXTRA) || defined(RSA_DECODE_EXTRA)))
+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;
+}
+#endif
+
+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 (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 (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 ||
+ 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;
+
+ 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)
+{
+ if (key == NULL || der == NULL) {
+ return BAD_FUNC_ARG;
+ }
+
+ #if !defined(NO_RSA)
+ {
+ RsaKey a, b;
+ word32 keyIdx = 0;
+ int ret = 0;
+
+ /* test if RSA key */
+ if (der->keyOID == RSAk) {
+ if (wc_InitRsaKey(&a, NULL) == 0 &&
+ wc_RsaPrivateKeyDecode(key, &keyIdx, &a, keySz) == 0) {
+ WOLFSSL_MSG("Checking RSA key pair");
+ keyIdx = 0; /* reset to 0 for parsing public key */
+
+ if (wc_InitRsaKey(&b, NULL) == 0) {
+ 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");
+ wc_FreeRsaKey(&b);
+ wc_FreeRsaKey(&a);
+ return 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 {
+ /* match found, free keys and return success */
+ wc_FreeRsaKey(&b);
+ wc_FreeRsaKey(&a);
+ return 1;
+ }
+ #endif
+ }
+ wc_FreeRsaKey(&b);
+ }
+ }
+ wc_FreeRsaKey(&a);
+ }
+
+ /* if ret is not 0 then there was a failed comparision attempt */
+ if (ret != 0) {
+ return ret;
+ }
+ }
+ #endif /* NO_RSA */
+
+ #ifdef HAVE_ECC
+ {
+ int ret = 0;
+ word32 keyIdx = 0;
+ ecc_key key_pair;
+
+ if (der->keyOID == ECDSAk) {
+ if ((ret = wc_ecc_init(&key_pair)) == 0 &&
+ wc_EccPrivateKeyDecode(key, &keyIdx, &key_pair, keySz) == 0) {
+ WOLFSSL_MSG("Checking ECC key pair");
+ keyIdx = 0;
+ if ((ret = wc_ecc_import_x963(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_ecc_check_key(&key_pair)) == 0) {
+ /* found a match */
+ wc_ecc_free(&key_pair);
+ return 1;
+ }
+
+ }
+ }
+ wc_ecc_free(&key_pair);
+ }
+
+ /* error on attempt to match */
+ if (ret != 0) {
+ return ret;
+ }
+ }
+ #endif /* HAVE_ECC */
+
+ /* no match found */
+ return 0;
+}
+
+#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) {
+ case 1:
+ *id = PBE_SHA1_RC4_128;
+ *version = PKCS12v1;
+ return 0;
+ case 3:
+ *id = PBE_SHA1_DES3;
+ *version = PKCS12v1;
+ return 0;
+ default:
+ return ALGO_ID_E;
+ }
+ }
+
+ if (first != PKCS5)
+ return ASN_INPUT_E; /* VERSION ERROR */
+
+ if (second == PBES2) {
+ *version = PKCS5v2;
+ return 0;
+ }
+
+ switch (second) {
+ case 3: /* see RFC 2898 for ids */
+ *id = PBE_MD5_DES;
+ return 0;
+ case 10:
+ *id = PBE_SHA1_DES;
+ return 0;
+ 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)
+{
+ switch (oid) {
+ case 69:
+ *id = PBE_SHA1_DES;
+ return 0;
+ case 652:
+ *id = PBE_SHA1_DES3;
+ return 0;
+ default:
+ return ALGO_ID_E;
+
+ }
+}
+
+
+/* Decrypt input in place from parameters based on id */
+static int DecryptKey(const char* password, int passwordSz, byte* salt,
+ int saltSz, int iterations, int id, byte* input,
+ int length, int version, byte* cbcIv)
+{
+ int typeH;
+ int derivedLen;
+ int decryptionType;
+ int ret = 0;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* key;
+#else
+ byte key[MAX_KEY_SIZE];
+#endif
+
+ (void)input;
+ (void)length;
+
+ switch (id) {
+ case PBE_MD5_DES:
+ typeH = MD5;
+ derivedLen = 16; /* may need iv for v1.5 */
+ decryptionType = DES_TYPE;
+ break;
+
+ case PBE_SHA1_DES:
+ typeH = SHA;
+ derivedLen = 16; /* may need iv for v1.5 */
+ decryptionType = DES_TYPE;
+ break;
+
+ case PBE_SHA1_DES3:
+ typeH = SHA;
+ derivedLen = 32; /* may need iv for v1.5 */
+ decryptionType = DES3_TYPE;
+ break;
+
+ case PBE_SHA1_RC4_128:
+ typeH = SHA;
+ derivedLen = 16;
+ decryptionType = RC4_TYPE;
+ break;
+
+ default:
+ return ALGO_ID_E;
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ key = (byte*)XMALLOC(MAX_KEY_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (key == NULL)
+ return MEMORY_E;
+#endif
+
+ if (version == PKCS5v2)
+ ret = wc_PBKDF2(key, (byte*)password, passwordSz,
+ salt, saltSz, iterations, derivedLen, typeH);
+#ifndef NO_SHA
+ else if (version == PKCS5)
+ ret = wc_PBKDF1(key, (byte*)password, passwordSz,
+ salt, saltSz, iterations, derivedLen, typeH);
+#endif
+ else if (version == PKCS12v1) {
+ int i, idx = 0;
+ byte unicodePasswd[MAX_UNICODE_SZ];
+
+ if ( (passwordSz * 2 + 2) > (int)sizeof(unicodePasswd)) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return UNICODE_SIZE_E;
+ }
+
+ for (i = 0; i < passwordSz; i++) {
+ unicodePasswd[idx++] = 0x00;
+ unicodePasswd[idx++] = (byte)password[i];
+ }
+ /* add trailing NULL */
+ unicodePasswd[idx++] = 0x00;
+ unicodePasswd[idx++] = 0x00;
+
+ ret = wc_PKCS12_PBKDF(key, unicodePasswd, idx, salt, saltSz,
+ iterations, derivedLen, typeH, 1);
+ if (decryptionType != RC4_TYPE)
+ ret += wc_PKCS12_PBKDF(cbcIv, unicodePasswd, idx, salt, saltSz,
+ iterations, 8, typeH, 2);
+ }
+ else {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ALGO_ID_E;
+ }
+
+ if (ret != 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ret;
+ }
+
+ switch (decryptionType) {
+#ifndef NO_DES3
+ case DES_TYPE:
+ {
+ Des dec;
+ byte* desIv = key + 8;
+
+ if (version == PKCS5v2 || version == PKCS12v1)
+ desIv = cbcIv;
+
+ ret = wc_Des_SetKey(&dec, key, desIv, DES_DECRYPTION);
+ if (ret != 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ret;
+ }
+
+ wc_Des_CbcDecrypt(&dec, input, input, length);
+ break;
+ }
+
+ case DES3_TYPE:
+ {
+ Des3 dec;
+ byte* desIv = key + 24;
+
+ if (version == PKCS5v2 || version == PKCS12v1)
+ desIv = cbcIv;
+ ret = wc_Des3_SetKey(&dec, key, desIv, DES_DECRYPTION);
+ if (ret != 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ret;
+ }
+ ret = wc_Des3_CbcDecrypt(&dec, input, input, length);
+ if (ret != 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ret;
+ }
+ break;
+ }
+#endif
+#ifndef NO_RC4
+ case RC4_TYPE:
+ {
+ Arc4 dec;
+
+ wc_Arc4SetKey(&dec, key, derivedLen);
+ wc_Arc4Process(&dec, input, input, length);
+ break;
+ }
+#endif
+
+ default:
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ALGO_ID_E;
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return 0;
+}
+
+
+int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID, word32* oidSz,
+ int* algoID, void* heap)
+{
+ word32 tmpIdx = 0;
+#ifdef HAVE_ECC
+ ecc_key ecc;
+#endif
+#ifndef NO_RSA
+ RsaKey rsa;
+#endif
+
+ if (algoID == NULL) {
+ return BAD_FUNC_ARG;
+ }
+ *algoID = 0;
+
+#ifndef NO_RSA
+ if (wc_InitRsaKey(&rsa, heap) == 0) {
+ if (wc_RsaPrivateKeyDecode(key, &tmpIdx, &rsa, keySz) == 0) {
+ *algoID = RSAk;
+ }
+ else {
+ WOLFSSL_MSG("Not RSA DER key");
+ }
+ wc_FreeRsaKey(&rsa);
+ }
+ else {
+ WOLFSSL_MSG("GetKeyOID wc_InitRsaKey failed");
+ }
+#endif /* NO_RSA */
+#ifdef HAVE_ECC
+ if (*algoID != RSAk) {
+ tmpIdx = 0;
+ if (wc_ecc_init_ex(&ecc, heap, INVALID_DEVID) == 0) {
+ if (wc_EccPrivateKeyDecode(key, &tmpIdx, &ecc, keySz) == 0) {
+ *algoID = ECDSAk;
+
+ /* sanity check on arguments */
+ if (curveOID == NULL || oidSz == NULL) {
+ WOLFSSL_MSG("Error getting ECC curve OID");
+ wc_ecc_free(&ecc);
+ return BAD_FUNC_ARG;
+ }
+
+ /* 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);
+ }
+ else {
+ WOLFSSL_MSG("GetKeyOID wc_ecc_init_ex failed");
+ }
+ }
+#endif /* HAVE_ECC */
+
+ /* 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;
+}
+
+
+/* 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, oid;
+ int ret = 0, first, second, length = 0, version, saltSz, id;
+ int iterations = 0;
+#ifdef WOLFSSL_SMALL_STACK
+ byte* salt = NULL;
+ byte* cbcIv = NULL;
+#else
+ byte salt[MAX_SALT_SIZE];
+ byte cbcIv[MAX_IV_SIZE];
+#endif
+
+ if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
+ ERROR_OUT(ASN_PARSE_E, exit_tte);
+ }
+
+ if (GetAlgoId(input, &inOutIdx, &oid, oidSigType, 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);
+ }
+
+ 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);
+ }
+
+#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 */
+ /* JOHN: New type. Need a little more research. */
+ 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 = DecryptKey(password, passwordSz, salt, saltSz, iterations, id,
+ input + inOutIdx, length, version, cbcIv);
+
+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;
+}
+
+/* decrypt PKCS */
+int DecryptContent(byte* input, word32 sz,const char* password,int passwordSz)
+{
+ word32 inOutIdx = 0, oid;
+ int ret = 0;
+ int first, second, length = 0, version, saltSz, id;
+ int iterations = 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, oidSigType, 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);
+ }
+
+ 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);
+ }
+
+#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 */
+ /* JOHN: New type. Need a little more research. */
+ 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;
+
+ 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 = DecryptKey(password, passwordSz, salt, saltSz, iterations, id,
+ input + inOutIdx, length, version, cbcIv);
+
+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 (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;
+ }
+
+ 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;
+ }
+
+ 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 (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;
+
+ 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 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)
+{
+ cert->publicKey = 0;
+ cert->pubKeySize = 0;
+ cert->pubKeyStored = 0;
+ cert->keyOID = 0;
+ cert->version = 0;
+ cert->signature = 0;
+ cert->subjectCN = 0;
+ cert->subjectCNLen = 0;
+ cert->subjectCNEnc = CTC_UTF8;
+ cert->subjectCNStored = 0;
+ cert->weOwnAltNames = 0;
+ cert->altNames = NULL;
+#ifndef IGNORE_NAME_CONSTRAINTS
+ cert->altEmailNames = NULL;
+ cert->permittedNames = NULL;
+ cert->excludedNames = NULL;
+#endif /* IGNORE_NAME_CONSTRAINTS */
+ cert->issuer[0] = '\0';
+ cert->subject[0] = '\0';
+ cert->source = source; /* don't own */
+ cert->srcIdx = 0;
+ cert->maxIdx = inSz; /* can't go over this index */
+ cert->heap = heap;
+ XMEMSET(cert->serial, 0, EXTERNAL_SERIAL_SIZE);
+ cert->serialSz = 0;
+ cert->extensions = 0;
+ cert->extensionsSz = 0;
+ cert->extensionsIdx = 0;
+ cert->extAuthInfo = NULL;
+ cert->extAuthInfoSz = 0;
+ cert->extCrlInfo = NULL;
+ cert->extCrlInfoSz = 0;
+ XMEMSET(cert->extSubjKeyId, 0, KEYID_SIZE);
+ cert->extSubjKeyIdSet = 0;
+ XMEMSET(cert->extAuthKeyId, 0, KEYID_SIZE);
+ cert->extAuthKeyIdSet = 0;
+ cert->extKeyUsageSet = 0;
+ cert->extKeyUsage = 0;
+ cert->extExtKeyUsageSet = 0;
+ cert->extExtKeyUsage = 0;
+ cert->isCA = 0;
+ cert->pathLengthSet = 0;
+ cert->pathLength = 0;
+#ifdef HAVE_PKCS7
+ cert->issuerRaw = NULL;
+ cert->issuerRawLen = 0;
+#endif
+#ifdef WOLFSSL_CERT_GEN
+ cert->subjectSN = 0;
+ cert->subjectSNLen = 0;
+ cert->subjectSNEnc = CTC_UTF8;
+ cert->subjectC = 0;
+ cert->subjectCLen = 0;
+ cert->subjectCEnc = CTC_PRINTABLE;
+ cert->subjectL = 0;
+ cert->subjectLLen = 0;
+ cert->subjectLEnc = CTC_UTF8;
+ cert->subjectST = 0;
+ cert->subjectSTLen = 0;
+ cert->subjectSTEnc = CTC_UTF8;
+ cert->subjectO = 0;
+ cert->subjectOLen = 0;
+ cert->subjectOEnc = CTC_UTF8;
+ cert->subjectOU = 0;
+ cert->subjectOULen = 0;
+ cert->subjectOUEnc = CTC_UTF8;
+ cert->subjectEmail = 0;
+ cert->subjectEmailLen = 0;
+#endif /* WOLFSSL_CERT_GEN */
+ cert->beforeDate = NULL;
+ cert->beforeDateLen = 0;
+ cert->afterDate = NULL;
+ cert->afterDateLen = 0;
+#ifdef OPENSSL_EXTRA
+ XMEMSET(&cert->issuerName, 0, sizeof(DecodedName));
+ XMEMSET(&cert->subjectName, 0, sizeof(DecodedName));
+ cert->extCRLdistSet = 0;
+ cert->extCRLdistCrit = 0;
+ cert->extAuthInfoSet = 0;
+ cert->extAuthInfoCrit = 0;
+ cert->extBasicConstSet = 0;
+ cert->extBasicConstCrit = 0;
+ cert->extSubjAltNameSet = 0;
+ cert->extSubjAltNameCrit = 0;
+ cert->extAuthKeyIdCrit = 0;
+ cert->extSubjKeyIdCrit = 0;
+ cert->extKeyUsageCrit = 0;
+ cert->extExtKeyUsageCrit = 0;
+ cert->extExtKeyUsageSrc = NULL;
+ cert->extExtKeyUsageSz = 0;
+ cert->extExtKeyUsageCount = 0;
+ cert->extAuthKeyIdSrc = NULL;
+ cert->extAuthKeyIdSz = 0;
+ cert->extSubjKeyIdSrc = NULL;
+ cert->extSubjKeyIdSz = 0;
+#endif /* OPENSSL_EXTRA */
+#if defined(OPENSSL_EXTRA) || !defined(IGNORE_NAME_CONSTRAINTS)
+ cert->extNameConstraintSet = 0;
+#endif /* OPENSSL_EXTRA || !IGNORE_NAME_CONSTRAINTS */
+#ifdef HAVE_ECC
+ cert->pkCurveOID = 0;
+#endif /* HAVE_ECC */
+#ifdef WOLFSSL_SEP
+ cert->deviceTypeSz = 0;
+ cert->deviceType = NULL;
+ cert->hwTypeSz = 0;
+ cert->hwType = NULL;
+ cert->hwSerialNumSz = 0;
+ cert->hwSerialNum = NULL;
+ #ifdef OPENSSL_EXTRA
+ cert->extCertPolicySet = 0;
+ cert->extCertPolicyCrit = 0;
+ #endif /* OPENSSL_EXTRA */
+#endif /* WOLFSSL_SEP */
+#ifdef WOLFSSL_CERT_EXT
+ XMEMSET(cert->extCertPolicies, 0, MAX_CERTPOL_NB*MAX_CERTPOL_SZ);
+ cert->extCertPoliciesNb = 0;
+#endif
+
+ cert->ca = NULL;
+ 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 */
+#ifdef OPENSSL_EXTRA
+ 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;
+#ifdef 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, NULL,
+ 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ASN_NTRU_KEY_E;
+ }
+
+ if ( (next - key) < 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(keyBlob, NULL, 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, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return 0;
+ }
+ #endif /* HAVE_NTRU */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ {
+ int ret;
+
+ 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(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_ECC */
+ 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;
+ #ifdef OPENSSL_EXTRA
+ DecodedName* dName =
+ (nameType == ISSUER) ? &cert->issuerName : &cert->subjectName;
+ #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->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) {
+ byte id;
+ byte copy = FALSE;
+ int strLen;
+
+ 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;
+ }
+
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/CN=", 4);
+ idx += 4;
+ copy = TRUE;
+ }
+ #ifdef OPENSSL_EXTRA
+ dName->cnIdx = cert->srcIdx;
+ dName->cnLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_SUR_NAME) {
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/SN=", 4);
+ idx += 4;
+ copy = TRUE;
+ }
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectSN = (char*)&cert->source[cert->srcIdx];
+ cert->subjectSNLen = strLen;
+ cert->subjectSNEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #ifdef OPENSSL_EXTRA
+ dName->snIdx = cert->srcIdx;
+ dName->snLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_COUNTRY_NAME) {
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/C=", 3);
+ idx += 3;
+ copy = TRUE;
+ }
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectC = (char*)&cert->source[cert->srcIdx];
+ cert->subjectCLen = strLen;
+ cert->subjectCEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #ifdef OPENSSL_EXTRA
+ dName->cIdx = cert->srcIdx;
+ dName->cLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_LOCALITY_NAME) {
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/L=", 3);
+ idx += 3;
+ copy = TRUE;
+ }
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectL = (char*)&cert->source[cert->srcIdx];
+ cert->subjectLLen = strLen;
+ cert->subjectLEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #ifdef OPENSSL_EXTRA
+ dName->lIdx = cert->srcIdx;
+ dName->lLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_STATE_NAME) {
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/ST=", 4);
+ idx += 4;
+ copy = TRUE;
+ }
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectST = (char*)&cert->source[cert->srcIdx];
+ cert->subjectSTLen = strLen;
+ cert->subjectSTEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #ifdef OPENSSL_EXTRA
+ dName->stIdx = cert->srcIdx;
+ dName->stLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_ORG_NAME) {
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/O=", 3);
+ idx += 3;
+ copy = TRUE;
+ }
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectO = (char*)&cert->source[cert->srcIdx];
+ cert->subjectOLen = strLen;
+ cert->subjectOEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #ifdef OPENSSL_EXTRA
+ dName->oIdx = cert->srcIdx;
+ dName->oLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_ORGUNIT_NAME) {
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/OU=", 4);
+ idx += 4;
+ copy = TRUE;
+ }
+ #ifdef WOLFSSL_CERT_GEN
+ if (nameType == SUBJECT) {
+ cert->subjectOU = (char*)&cert->source[cert->srcIdx];
+ cert->subjectOULen = strLen;
+ cert->subjectOUEnc = b;
+ }
+ #endif /* WOLFSSL_CERT_GEN */
+ #ifdef OPENSSL_EXTRA
+ dName->ouIdx = cert->srcIdx;
+ dName->ouLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+ else if (id == ASN_SERIAL_NUMBER) {
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/serialNumber=", 14);
+ idx += 14;
+ copy = TRUE;
+ }
+ #ifdef OPENSSL_EXTRA
+ dName->snIdx = cert->srcIdx;
+ dName->snLen = strLen;
+ #endif /* OPENSSL_EXTRA */
+ }
+
+ if (copy && !tooBig) {
+ XMEMCPY(&full[idx], &cert->source[cert->srcIdx], strLen);
+ idx += strLen;
+ }
+
+ cert->srcIdx += strLen;
+ }
+ else {
+ /* skip */
+ byte email = FALSE;
+ byte uid = FALSE;
+ int adv;
+
+ if (joint[0] == 0x2a && joint[1] == 0x86) /* email id hdr */
+ email = TRUE;
+
+ if (joint[0] == 0x9 && joint[1] == 0x92) /* uid id hdr */
+ uid = 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 */
+ #ifdef OPENSSL_EXTRA
+ 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->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;
+ }
+ 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 (uid) {
+ if ( (5 + adv) > (int)(ASN_NAME_MAX - idx)) {
+ WOLFSSL_MSG("ASN name too big, skipping");
+ tooBig = TRUE;
+ }
+ if (!tooBig) {
+ XMEMCPY(&full[idx], "/UID=", 5);
+ idx += 5;
+
+ XMEMCPY(&full[idx], &cert->source[cert->srcIdx], adv);
+ idx += adv;
+ }
+ #ifdef OPENSSL_EXTRA
+ dName->uidIdx = cert->srcIdx;
+ dName->uidLen = adv;
+ #endif /* OPENSSL_EXTRA */
+ }
+
+ cert->srcIdx += adv;
+ }
+ }
+ full[idx++] = 0;
+
+ #ifdef OPENSSL_EXTRA
+ {
+ int totalLen = 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;
+
+ 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], "/CN=", 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], "/SN=", 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], "/C=", 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], "/L=", 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], "/ST=", 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], "/O=", 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], "/OU=", 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;
+ }
+ 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], "/serialNumber=", 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
+#if !defined(NO_TIME_H) && 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 INLINE int DateLessThan(const struct tm* a, const struct tm* b)
+{
+ return DateGreaterThan(b,a);
+}
+
+
+#if defined(WOLFSSL_MYSQL_COMPATIBLE) || 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, 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 /* WOLFSSL_MYSQL_COMPATIBLE */
+
+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;
+}
+
+
+/* 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 /* !NO_TIME_H && 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 */
+
+static int GetDate(DecodedCert* cert, int dateType)
+{
+ int length;
+ byte date[MAX_DATE_SIZE];
+ byte b;
+ word32 startIdx = 0;
+
+ XMEMSET(date, 0, MAX_DATE_SIZE);
+
+ if (dateType == BEFORE)
+ cert->beforeDate = &cert->source[cert->srcIdx];
+ else
+ cert->afterDate = &cert->source[cert->srcIdx];
+ startIdx = cert->srcIdx;
+
+ b = cert->source[cert->srcIdx++];
+ if (b != ASN_UTC_TIME && b != ASN_GENERALIZED_TIME)
+ return ASN_TIME_E;
+
+ if (GetLength(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ if (length > MAX_DATE_SIZE || length < MIN_DATE_SIZE)
+ return ASN_DATE_SZ_E;
+
+ XMEMCPY(date, &cert->source[cert->srcIdx], length);
+ cert->srcIdx += length;
+
+ if (dateType == BEFORE)
+ cert->beforeDateLen = cert->srcIdx - startIdx;
+ else
+ cert->afterDateLen = cert->srcIdx - startIdx;
+
+#ifndef NO_ASN_TIME
+ if (!XVALIDATE_DATE(date, b, dateType)) {
+ if (dateType == BEFORE)
+ return ASN_BEFORE_DATE_E;
+ else
+ return ASN_AFTER_DATE_E;
+ }
+#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) < 0 && verify)
+ badDate = ASN_BEFORE_DATE_E; /* continue parsing */
+
+ if (GetDate(cert, AFTER) < 0 && verify)
+ return ASN_AFTER_DATE_E;
+
+ if (badDate != 0)
+ return badDate;
+
+ return 0;
+}
+
+
+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) && (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
+
+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 && WOLFSSL_CERT_GEN */
+
+
+static 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;
+}
+
+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 && !IsSigAlgoECDSA(algoOID)) ||
+ (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)
+{
+ switch (type) {
+#ifdef WOLFSSL_MD2
+ case MD2:
+ return MD2h;
+#endif
+#ifndef NO_MD5
+ case MD5:
+ return MD5h;
+#endif
+#ifndef NO_SHA
+ case SHA:
+ return SHAh;
+#endif
+#ifdef WOLFSSL_SHA224
+ case SHA224:
+ return SHA224h;
+#endif
+#ifndef NO_SHA256
+ case SHA256:
+ return SHA256h;
+#endif
+#ifdef WOLFSSL_SHA384
+ case SHA384:
+ return SHA384h;
+#endif
+#ifdef WOLFSSL_SHA512
+ case SHA512:
+ return SHA512h;
+#endif
+ default:
+ return 0;
+ };
+}
+
+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_TMP_BUFFER);
+ sigCtx->digest = NULL;
+ }
+#ifndef NO_RSA
+ if (sigCtx->plain) {
+ XFREE(sigCtx->plain, sigCtx->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ 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 */
+ default:
+ break;
+ } /* switch (keyOID) */
+ sigCtx->key.ptr = NULL;
+ }
+
+ /* reset state, we are done */
+ sigCtx->state = SIG_STATE_BEGIN;
+}
+
+/* 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_TMP_BUFFER);
+ if (sigCtx->digest == NULL) {
+ ERROR_OUT(MEMORY_E, exit_cs);
+ }
+
+ /* fall through */
+ sigCtx->state = SIG_STATE_HASH;
+ } /* SIG_STATE_BEGIN */
+
+ case SIG_STATE_HASH:
+ {
+ switch (sigOID) {
+ #ifndef NO_MD5
+ case CTC_MD5wRSA:
+ if ((ret = wc_Md5Hash(buf, bufSz, sigCtx->digest)) == 0) {
+ sigCtx->typeH = MD5h;
+ sigCtx->digestSz = MD5_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #if defined(WOLFSSL_MD2)
+ case CTC_MD2wRSA:
+ if ((ret = wc_Md2Hash(buf, bufSz, sigCtx->digest)) == 0) {
+ sigCtx->typeH = MD2h;
+ sigCtx->digestSz = MD2_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifndef NO_SHA
+ case CTC_SHAwRSA:
+ case CTC_SHAwDSA:
+ case CTC_SHAwECDSA:
+ if ((ret = wc_ShaHash(buf, bufSz, sigCtx->digest)) == 0) {
+ sigCtx->typeH = SHAh;
+ sigCtx->digestSz = SHA_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case CTC_SHA224wRSA:
+ case CTC_SHA224wECDSA:
+ if ((ret = wc_Sha224Hash(buf, bufSz, sigCtx->digest)) == 0) {
+ sigCtx->typeH = SHA224h;
+ sigCtx->digestSz = SHA224_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case CTC_SHA256wRSA:
+ case CTC_SHA256wECDSA:
+ if ((ret = wc_Sha256Hash(buf, bufSz, sigCtx->digest)) == 0) {
+ sigCtx->typeH = SHA256h;
+ sigCtx->digestSz = SHA256_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case CTC_SHA512wRSA:
+ case CTC_SHA512wECDSA:
+ if ((ret = wc_Sha512Hash(buf, bufSz, sigCtx->digest)) == 0) {
+ sigCtx->typeH = SHA512h;
+ sigCtx->digestSz = SHA512_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case CTC_SHA384wRSA:
+ case CTC_SHA384wECDSA:
+ if ((ret = wc_Sha384Hash(buf, bufSz, sigCtx->digest)) == 0) {
+ sigCtx->typeH = SHA384h;
+ sigCtx->digestSz = SHA384_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ default:
+ ret = HASH_TYPE_E;
+ WOLFSSL_MSG("Verify Signature has unsupported type");
+ }
+
+ if (ret != 0) {
+ goto exit_cs;
+ }
+
+ /* fall through */
+ sigCtx->state = SIG_STATE_KEY;
+ } /* SIG_STATE_HASH */
+
+ 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_TMP_BUFFER);
+ 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;
+ break;
+ }
+ #endif /* !NO_RSA */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ {
+ 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;
+ }
+ if ((ret = wc_ecc_import_x963(key, keySz,
+ sigCtx->key.ecc)) < 0) {
+ WOLFSSL_MSG("ASN Key import error ECC");
+ goto exit_cs;
+ }
+ break;
+ }
+ #endif /* HAVE_ECC */
+ default:
+ WOLFSSL_MSG("Verify Key type unknown");
+ ret = ASN_UNKNOWN_OID_E;
+ break;
+ } /* switch (keyOID) */
+
+ if (ret != 0) {
+ goto exit_cs;
+ }
+
+ /* fall through */
+ sigCtx->state = SIG_STATE_DO;
+ } /* SIG_STATE_KEY */
+
+ case SIG_STATE_DO:
+ {
+ switch (keyOID) {
+ #ifndef NO_RSA
+ case RSAk:
+ {
+ ret = wc_RsaSSL_VerifyInline(sigCtx->plain, sigSz,
+ &sigCtx->out, sigCtx->key.rsa);
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ if (ret == WC_PENDING_E)
+ sigCtx->asyncDev = &sigCtx->key.rsa->asyncDev;
+ #endif
+ break;
+ }
+ #endif /* !NO_RSA */
+ #ifdef HAVE_ECC
+ case ECDSAk:
+ {
+ ret = wc_ecc_verify_hash(sig, sigSz, sigCtx->digest,
+ sigCtx->digestSz, &sigCtx->verify, sigCtx->key.ecc);
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ if (ret == WC_PENDING_E)
+ sigCtx->asyncDev = &sigCtx->key.ecc->asyncDev;
+ #endif
+ break;
+ }
+ #endif /* HAVE_ECC */
+ 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;
+ }
+
+ /* fall through */
+ sigCtx->state = SIG_STATE_CHECK;
+ } /* SIG_STATE_DO */
+
+ 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 &&
+ 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 */
+ 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) {
+ if (base->type == ASN_DNS_TYPE) {
+ DNS_entry* name = cert->altNames;
+ while (name != NULL) {
+ if (MatchBaseName(ASN_DNS_TYPE,
+ name->name, (int)XSTRLEN(name->name),
+ base->name, base->nameSz))
+ return 0;
+ name = name->next;
+ }
+ }
+ else if (base->type == ASN_RFC822_TYPE) {
+ DNS_entry* name = cert->altEmailNames;
+ while (name != NULL) {
+ if (MatchBaseName(ASN_RFC822_TYPE,
+ name->name, (int)XSTRLEN(name->name),
+ base->name, base->nameSz))
+ return 0;
+
+ name = name->next;
+ }
+ }
+ else if (base->type == ASN_DIR_TYPE) {
+ if (cert->subjectRawLen == base->nameSz &&
+ XMEMCMP(cert->subjectRaw, base->name, base->nameSz) == 0) {
+
+ return 0;
+ }
+ }
+ 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) {
+ if (base->type == ASN_DNS_TYPE) {
+ DNS_entry* name = cert->altNames;
+
+ if (name != NULL)
+ needDns = 1;
+
+ while (name != NULL) {
+ matchDns = MatchBaseName(ASN_DNS_TYPE,
+ name->name, (int)XSTRLEN(name->name),
+ base->name, base->nameSz);
+ name = name->next;
+ }
+ }
+ else if (base->type == ASN_RFC822_TYPE) {
+ DNS_entry* name = cert->altEmailNames;
+
+ if (name != NULL)
+ needEmail = 1;
+
+ while (name != NULL) {
+ matchEmail = MatchBaseName(ASN_DNS_TYPE,
+ name->name, (int)XSTRLEN(name->name),
+ base->name, base->nameSz);
+ name = name->next;
+ }
+ }
+ else if (base->type == ASN_DIR_TYPE) {
+ needDir = 1;
+ if (cert->subjectRaw != NULL &&
+ cert->subjectRawLen == base->nameSz &&
+ XMEMCMP(cert->subjectRaw, base->name, base->nameSz) == 0) {
+
+ matchDir = 1;
+ }
+ }
+ 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->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;
+ }
+
+ 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->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;
+ }
+
+ XMEMCPY(emailEntry->name, &input[idx], strLen);
+ emailEntry->name[strLen] = '\0';
+
+ emailEntry->next = cert->altEmailNames;
+ cert->altEmailNames = emailEntry;
+
+ 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;
+ }
+
+#ifdef OPENSSL_EXTRA
+ 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;
+
+ #ifdef OPENSSL_EXTRA
+ 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;
+ }
+
+#ifdef OPENSSL_EXTRA
+ 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_OCSP_SIGN_OID:
+ cert->extExtKeyUsage |= EXTKEYUSE_OCSP_SIGN;
+ break;
+ }
+
+ #ifdef OPENSSL_EXTRA
+ cert->extExtKeyUsageCount++;
+ #endif
+ }
+
+ return 0;
+}
+
+
+#ifndef IGNORE_NAME_CONSTRAINTS
+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;
+
+ 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;
+ }
+
+ if (b == (ASN_CONTEXT_SPECIFIC | ASN_DNS_TYPE) ||
+ b == (ASN_CONTEXT_SPECIFIC | ASN_RFC822_TYPE) ||
+ b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | ASN_DIR_TYPE)) {
+
+ Base_entry* 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 = b & 0x0F;
+
+ 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)
+
+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 */
+static 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 0;
+}
+#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 (2 is the CERT_POLICY_OID+SEQ) */
+ if ((total_length + 2) != sz) {
+ 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 /* !defined(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 */
+
+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;
+ 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:
+ #ifdef OPENSSL_EXTRA
+ cert->extBasicConstSet = 1;
+ cert->extBasicConstCrit = critical;
+ #endif
+ if (DecodeBasicCaConstraint(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case CRL_DIST_OID:
+ #ifdef OPENSSL_EXTRA
+ cert->extCRLdistSet = 1;
+ cert->extCRLdistCrit = critical;
+ #endif
+ if (DecodeCrlDist(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case AUTH_INFO_OID:
+ #ifdef OPENSSL_EXTRA
+ cert->extAuthInfoSet = 1;
+ cert->extAuthInfoCrit = critical;
+ #endif
+ if (DecodeAuthInfo(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case ALT_NAMES_OID:
+ #ifdef OPENSSL_EXTRA
+ cert->extSubjAltNameSet = 1;
+ cert->extSubjAltNameCrit = critical;
+ #endif
+ if (DecodeAltNames(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case AUTH_KEY_OID:
+ cert->extAuthKeyIdSet = 1;
+ #ifdef OPENSSL_EXTRA
+ cert->extAuthKeyIdCrit = critical;
+ #endif
+ if (DecodeAuthKeyId(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case SUBJ_KEY_OID:
+ cert->extSubjKeyIdSet = 1;
+ #ifdef OPENSSL_EXTRA
+ 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
+ #ifdef OPENSSL_EXTRA
+ cert->extCertPolicySet = 1;
+ 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:
+ cert->extKeyUsageSet = 1;
+ #ifdef OPENSSL_EXTRA
+ cert->extKeyUsageCrit = critical;
+ #endif
+ if (DecodeKeyUsage(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ case EXT_KEY_USAGE_OID:
+ cert->extExtKeyUsageSet = 1;
+ #ifdef OPENSSL_EXTRA
+ cert->extExtKeyUsageCrit = critical;
+ #endif
+ if (DecodeExtKeyUsage(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+
+ #ifndef IGNORE_NAME_CONSTRAINTS
+ case NAME_CONS_OID:
+ cert->extNameConstraintSet = 1;
+ #ifdef OPENSSL_EXTRA
+ cert->extNameConstraintCrit = critical;
+ #endif
+ if (DecodeNameConstraints(&input[idx], length, cert) < 0)
+ return ASN_PARSE_E;
+ break;
+ #endif /* IGNORE_NAME_CONSTRAINTS */
+
+ case INHIBIT_ANY_OID:
+ 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 */
+
+int ParseCertRelative(DecodedCert* cert, int type, int verify, void* cm)
+{
+ int ret = 0;
+ int badDate = 0;
+ int criticalExt = 0;
+ word32 confirmOID;
+
+ 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);
+ #else
+ cert->ca = GetCA(cm, cert->issuerHash);
+ #endif /* !NO_SKID */
+
+ WOLFSSL_MSG("About to verify certificate signature");
+ if (cert->ca) {
+ if (cert->isCA) {
+ if (cert->ca->pathLengthSet) {
+ if (cert->ca->pathLength == 0) {
+ WOLFSSL_MSG("CA with path length 0 signing a CA");
+ return ASN_PATHLEN_INV_E;
+ }
+ if (cert->pathLengthSet &&
+ 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) {
+ /* 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 (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;
+ 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
+ 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 result = 0;
+
+ WOLFSSL_ENTER("SetSerialNumber");
+
+ if (sn == NULL || output == NULL)
+ return BAD_FUNC_ARG;
+
+ if (snSz <= EXTERNAL_SERIAL_SIZE) {
+ output[0] = ASN_INTEGER;
+ /* The serial number is always positive. When encoding the
+ * INTEGER, if the MSB is 1, add a padding zero to keep the
+ * number positive. */
+ if (sn[0] & 0x80) {
+ output[1] = (byte)snSz + 1;
+ output[2] = 0;
+ XMEMCPY(&output[3], sn, snSz);
+ result = snSz + 3;
+ }
+ else {
+ output[1] = (byte)snSz;
+ XMEMCPY(&output[2], sn, snSz);
+ result = snSz + 2;
+ }
+ }
+ return result;
+}
+
+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;
+}
+
+
+
+const char* BEGIN_CERT = "-----BEGIN CERTIFICATE-----";
+const char* END_CERT = "-----END CERTIFICATE-----";
+const char* BEGIN_CERT_REQ = "-----BEGIN CERTIFICATE REQUEST-----";
+const char* END_CERT_REQ = "-----END CERTIFICATE REQUEST-----";
+const char* BEGIN_DH_PARAM = "-----BEGIN DH PARAMETERS-----";
+const char* END_DH_PARAM = "-----END DH PARAMETERS-----";
+const char* BEGIN_DSA_PARAM = "-----BEGIN DSA PARAMETERS-----";
+const char* END_DSA_PARAM = "-----END DSA PARAMETERS-----";
+const char* BEGIN_X509_CRL = "-----BEGIN X509 CRL-----";
+const char* END_X509_CRL = "-----END X509 CRL-----";
+const char* BEGIN_RSA_PRIV = "-----BEGIN RSA PRIVATE KEY-----";
+const char* END_RSA_PRIV = "-----END RSA PRIVATE KEY-----";
+const char* BEGIN_PRIV_KEY = "-----BEGIN PRIVATE KEY-----";
+const char* END_PRIV_KEY = "-----END PRIVATE KEY-----";
+const char* BEGIN_ENC_PRIV_KEY = "-----BEGIN ENCRYPTED PRIVATE KEY-----";
+const char* END_ENC_PRIV_KEY = "-----END ENCRYPTED PRIVATE KEY-----";
+const char* BEGIN_EC_PRIV = "-----BEGIN EC PRIVATE KEY-----";
+const char* END_EC_PRIV = "-----END EC PRIVATE KEY-----";
+const char* BEGIN_DSA_PRIV = "-----BEGIN DSA PRIVATE KEY-----";
+const char* END_DSA_PRIV = "-----END DSA PRIVATE KEY-----";
+const char* BEGIN_PUB_KEY = "-----BEGIN PUBLIC KEY-----";
+const char* END_PUB_KEY = "-----END PUBLIC KEY-----";
+
+#if defined(WOLFSSL_KEY_GEN) || defined(WOLFSSL_CERT_GEN) || defined(OPENSSL_EXTRA)
+
+/* 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)
+{
+#ifdef WOLFSSL_SMALL_STACK
+ char* header = NULL;
+ char* footer = NULL;
+#else
+ char header[40 + HEADER_ENCRYPTED_KEY_SIZE];
+ char footer[40];
+#endif
+
+ int headerLen = 40 + HEADER_ENCRYPTED_KEY_SIZE;
+ int footerLen = 40;
+ int i;
+ int err;
+ int outLen; /* return length or error */
+
+ if (der == output) /* no in place conversion */
+ return BAD_FUNC_ARG;
+
+#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
+ if (type == CERT_TYPE) {
+ XSTRNCPY(header, BEGIN_CERT, headerLen);
+ XSTRNCAT(header, "\n", 1);
+
+ XSTRNCPY(footer, END_CERT, footerLen);
+ XSTRNCAT(footer, "\n", 1);
+ }
+ else if (type == PRIVATEKEY_TYPE) {
+ XSTRNCPY(header, BEGIN_RSA_PRIV, headerLen);
+ XSTRNCAT(header, "\n", 1);
+
+ XSTRNCPY(footer, END_RSA_PRIV, footerLen);
+ XSTRNCAT(footer, "\n", 1);
+ }
+#ifndef NO_DSA
+ else if (type == DSA_PRIVATEKEY_TYPE) {
+ XSTRNCPY(header, BEGIN_DSA_PRIV, headerLen);
+ XSTRNCAT(header, "\n", 1);
+
+ XSTRNCPY(footer, END_DSA_PRIV, footerLen);
+ XSTRNCAT(footer, "\n", 1);
+ }
+#endif
+#ifdef HAVE_ECC
+ else if (type == ECC_PRIVATEKEY_TYPE) {
+ XSTRNCPY(header, BEGIN_EC_PRIV, headerLen);
+ XSTRNCAT(header, "\n", 1);
+
+ XSTRNCPY(footer, END_EC_PRIV, footerLen);
+ XSTRNCAT(footer, "\n", 1);
+ }
+#endif
+#ifdef WOLFSSL_CERT_REQ
+ else if (type == CERTREQ_TYPE)
+ {
+ XSTRNCPY(header, BEGIN_CERT_REQ, headerLen);
+ XSTRNCAT(header, "\n", 1);
+
+ XSTRNCPY(footer, END_CERT_REQ, footerLen);
+ XSTRNCAT(footer, "\n", 1);
+ }
+#endif
+#ifdef HAVE_CRL
+ else if (type == CRL_TYPE)
+ {
+ XSTRNCPY(header, BEGIN_X509_CRL, headerLen);
+ XSTRNCAT(header, "\n", 1);
+
+ XSTRNCPY(footer, END_X509_CRL, footerLen);
+ XSTRNCAT(footer, "\n", 1);
+ }
+#endif
+ else {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BAD_FUNC_ARG;
+ }
+
+ /* extra header information for encrypted key */
+ if (cipher_info != NULL) {
+ size_t cipherInfoStrLen = XSTRLEN((char*)cipher_info);
+ if (cipherInfoStrLen > HEADER_ENCRYPTED_KEY_SIZE - (23+10+2))
+ cipherInfoStrLen = HEADER_ENCRYPTED_KEY_SIZE - (23+10+2);
+
+ XSTRNCAT(header, "Proc-Type: 4,ENCRYPTED\n", 23);
+ XSTRNCAT(header, "DEK-Info: ", 10);
+ XSTRNCAT(header, (char*)cipher_info, cipherInfoStrLen);
+ XSTRNCAT(header, "\n\n", 2);
+ }
+
+ 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_KEY_GEN || WOLFSSL_CERT_GEN */
+
+#if !defined(NO_RSA) && (defined(WOLFSSL_CERT_GEN) || (defined(WOLFSSL_KEY_GEN) && !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, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return nSz;
+ }
+
+ /* e */
+#ifdef WOLFSSL_SMALL_STACK
+ e = (byte*)XMALLOC(MAX_RSA_E_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (e == NULL) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(n, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (algo == NULL) {
+ XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(algo, NULL, 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, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(e, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ 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 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)
+ 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;
+}
+
+
+/* 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 */
+
+
+#if defined(WOLFSSL_CERT_GEN) && !defined(NO_RSA)
+
+/* 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
+*/
+void wc_InitCert(Cert* cert)
+{
+ cert->version = 2; /* version 3 is hex 2 */
+ cert->sigType = CTC_SHAwRSA;
+ cert->daysValid = 500;
+ cert->selfSigned = 1;
+ cert->isCA = 0;
+ cert->bodySz = 0;
+#ifdef WOLFSSL_ALT_NAMES
+ cert->altNamesSz = 0;
+ cert->beforeDateSz = 0;
+ cert->afterDateSz = 0;
+#endif
+#ifdef WOLFSSL_CERT_EXT
+ cert->skidSz = 0;
+ cert->akidSz = 0;
+ cert->keyUsage = 0;
+ cert->certPoliciesNb = 0;
+ XMEMSET(cert->akid, 0, CTC_MAX_AKID_SIZE);
+ XMEMSET(cert->skid, 0, CTC_MAX_SKID_SIZE);
+ XMEMSET(cert->certPolicies, 0, CTC_MAX_CERTPOL_NB*CTC_MAX_CERTPOL_SZ);
+#endif
+ cert->keyType = RSA_KEY;
+ XMEMSET(cert->serial, 0, CTC_SERIAL_SIZE);
+
+ cert->issuer.country[0] = '\0';
+ cert->issuer.countryEnc = CTC_PRINTABLE;
+ cert->issuer.state[0] = '\0';
+ cert->issuer.stateEnc = CTC_UTF8;
+ cert->issuer.locality[0] = '\0';
+ cert->issuer.localityEnc = CTC_UTF8;
+ cert->issuer.sur[0] = '\0';
+ cert->issuer.surEnc = CTC_UTF8;
+ cert->issuer.org[0] = '\0';
+ cert->issuer.orgEnc = CTC_UTF8;
+ cert->issuer.unit[0] = '\0';
+ cert->issuer.unitEnc = CTC_UTF8;
+ cert->issuer.commonName[0] = '\0';
+ cert->issuer.commonNameEnc = CTC_UTF8;
+ cert->issuer.email[0] = '\0';
+
+ cert->subject.country[0] = '\0';
+ cert->subject.countryEnc = CTC_PRINTABLE;
+ cert->subject.state[0] = '\0';
+ cert->subject.stateEnc = CTC_UTF8;
+ cert->subject.locality[0] = '\0';
+ cert->subject.localityEnc = CTC_UTF8;
+ cert->subject.sur[0] = '\0';
+ cert->subject.surEnc = CTC_UTF8;
+ cert->subject.org[0] = '\0';
+ cert->subject.orgEnc = CTC_UTF8;
+ cert->subject.unit[0] = '\0';
+ cert->subject.unitEnc = CTC_UTF8;
+ cert->subject.commonName[0] = '\0';
+ cert->subject.commonNameEnc = CTC_UTF8;
+ cert->subject.email[0] = '\0';
+
+#ifdef WOLFSSL_CERT_REQ
+ cert->challengePw[0] ='\0';
+#endif
+#ifdef WOLFSSL_HEAP_TEST
+ cert->heap = (void*)WOLFSSL_HEAP_TEST;
+#else
+ cert->heap = NULL;
+#endif
+}
+
+
+/* DER encoded x509 Certificate */
+typedef struct DerCert {
+ byte size[MAX_LENGTH_SZ]; /* length encoded */
+ byte version[MAX_VERSION_SZ]; /* version encoded */
+ byte serial[CTC_SERIAL_SIZE + 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 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 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 */
+
+
+/* Write a serial number to output */
+static int SetSerial(const byte* serial, byte* output)
+{
+ int length = 0;
+
+ output[length++] = ASN_INTEGER;
+ length += SetLength(CTC_SERIAL_SIZE, &output[length]);
+ XMEMCPY(&output[length], serial, CTC_SERIAL_SIZE);
+
+ return length + CTC_SERIAL_SIZE;
+}
+
+#endif /* defined(WOLFSSL_CERT_GEN) && !defined(NO_RSA) */
+#if defined(HAVE_ECC) && (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))
+
+/* 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
+
+#ifdef WOLFSSL_SMALL_STACK
+ pub = (byte*)XMALLOC(ECC_BUFSIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (pub == NULL)
+ return MEMORY_E;
+#endif
+
+ int ret = wc_ecc_export_x963(key, pub, &pubSz);
+ if (ret != 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ret;
+ }
+
+ /* headers */
+ if (with_header) {
+#ifdef WOLFSSL_SMALL_STACK
+ curve = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (curve == NULL) {
+ XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+ curveSz = SetCurve(key, curve);
+ if (curveSz <= 0) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(curve, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return curveSz;
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ algo = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (algo == NULL) {
+ XFREE(curve, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(pub, NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(curve, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ }
+ XFREE(pub, NULL, 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 && (WOLFSSL_CERT_GEN || WOLFSSL_KEY_GEN) */
+#if defined(WOLFSSL_CERT_GEN) && !defined(NO_RSA)
+
+static 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
+
+
+/* for systems where mktime() doesn't normalize fully */
+static void RebuildTime(time_t* in, struct tm* out)
+{
+ #if defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
+ out = localtime_r(in, out);
+ #else
+ (void)in;
+ (void)out;
+ #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 ticks;
+ time_t normalTime;
+ struct tm* now;
+ struct tm* tmpTime = NULL;
+ struct tm local;
+
+#if defined(NEED_TMP_TIME)
+ /* for use with gmtime_r */
+ struct tm tmpTimeStorage;
+ tmpTime = &tmpTimeStorage;
+#else
+ (void)tmpTime;
+#endif
+
+ ticks = XTIME(0);
+ now = XGMTIME(&ticks, tmpTime);
+
+ if (now == NULL) {
+ WOLFSSL_MSG("XGMTIME failed");
+ return 0; /* error */
+ }
+
+ /* before now */
+ local = *now;
+ before[0] = ASN_GENERALIZED_TIME;
+ beforeSz = SetLength(ASN_GEN_TIME_SZ, before + 1) + 1; /* gen tag */
+
+ /* subtract 1 day for more compliance */
+ local.tm_mday -= 1;
+ normalTime = mktime(&local);
+ RebuildTime(&normalTime, &local);
+
+ /* adjust */
+ local.tm_year += 1900;
+ local.tm_mon += 1;
+
+ SetTime(&local, before + beforeSz);
+ beforeSz += ASN_GEN_TIME_SZ;
+
+ /* after now + daysValid */
+ local = *now;
+ after[0] = ASN_GENERALIZED_TIME;
+ afterSz = SetLength(ASN_GEN_TIME_SZ, after + 1) + 1; /* gen tag */
+
+ /* add daysValid */
+ local.tm_mday += daysValid;
+ normalTime = mktime(&local);
+ RebuildTime(&normalTime, &local);
+
+ /* adjust */
+ local.tm_year += 1900;
+ local.tm_mon += 1;
+
+ SetTime(&local, 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:
+ /* email uses different id type */
+ return 0;
+
+ 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);
+}
+
+/* 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] = 0x00;
+
+ 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 */
+
+
+/* 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
+
+ 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++) {
+ const char* nameStr = GetOneName(name, i);
+ 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 email = i == (NAME_ENTRIES - 1) ? 1 : 0;
+ int strLen = (int)XSTRLEN(nameStr);
+ int thisLen = strLen;
+ int firstSz, secondSz, seqSz, setSz;
+
+ if (strLen == 0) { /* no user data for this item */
+ names[i].used = 0;
+ continue;
+ }
+
+ /* Restrict country code size */
+ if (i == 0 && strLen != CTC_COUNTRY_SIZE) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return ASN_COUNTRY_SIZE_E;
+ }
+
+ secondSz = SetLength(strLen, secondLen);
+ thisLen += secondSz;
+ if (email) {
+ thisLen += EMAIL_JOINT_LEN;
+ thisLen ++; /* id type */
+ firstSz = SetObjectId(EMAIL_JOINT_LEN, firstLen);
+ }
+ else {
+ thisLen++; /* str type */
+ thisLen++; /* id type */
+ thisLen += JOINT_LEN;
+ firstSz = SetObjectId(JOINT_LEN + 1, firstLen);
+ }
+ thisLen += firstSz;
+
+ seqSz = SetSequence(thisLen, sequence);
+ thisLen += seqSz;
+ setSz = SetSet(thisLen, set);
+ thisLen += setSz;
+
+ if (thisLen > (int)sizeof(names[i].encoded)) {
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+ return BUFFER_E;
+ }
+
+ /* store it */
+ idx = 0;
+ /* set */
+ XMEMCPY(names[i].encoded, set, setSz);
+ idx += setSz;
+ /* seq */
+ XMEMCPY(names[i].encoded + idx, sequence, seqSz);
+ idx += seqSz;
+ /* asn object id */
+ XMEMCPY(names[i].encoded + idx, firstLen, firstSz);
+ idx += firstSz;
+ if (email) {
+ const byte EMAIL_OID[] = { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+ 0x01, 0x09, 0x01, 0x16 };
+ /* email joint id */
+ XMEMCPY(names[i].encoded + idx, EMAIL_OID, sizeof(EMAIL_OID));
+ idx += (int)sizeof(EMAIL_OID);
+ }
+ else {
+ /* joint id */
+ byte bType = GetNameId(i);
+ names[i].encoded[idx++] = 0x55;
+ names[i].encoded[idx++] = 0x04;
+ /* id type */
+ names[i].encoded[idx++] = bType;
+ /* str type */
+ names[i].encoded[idx++] = GetNameType(name, i);
+ }
+ /* second length */
+ XMEMCPY(names[i].encoded + idx, secondLen, secondSz);
+ idx += secondSz;
+ /* str value */
+ XMEMCPY(names[i].encoded + idx, nameStr, strLen);
+ idx += strLen;
+
+ totalBytes += idx;
+ names[i].totalLen = idx;
+ names[i].used = 1;
+ }
+ else
+ names[i].used = 0;
+ }
+
+ /* 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++) {
+ 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)
+{
+ int ret;
+
+ (void)eccKey;
+ (void)ntruKey;
+ (void)ntruSz;
+
+ if (cert == NULL || der == NULL || rng == NULL)
+ return BAD_FUNC_ARG;
+
+ /* init */
+ XMEMSET(der, 0, sizeof(DerCert));
+
+ /* version */
+ der->versionSz = SetMyVersion(cert->version, der->version, TRUE);
+
+ /* serial number */
+ ret = wc_RNG_GenerateBlock(rng, cert->serial, CTC_SERIAL_SIZE);
+ if (ret != 0)
+ return ret;
+
+ cert->serial[0] = 0x01; /* ensure positive */
+ der->serialSz = SetSerial(cert->serial, der->serial);
+
+ /* signature algo */
+ der->sigAlgoSz = SetAlgoID(cert->sigType, der->sigAlgo, oidSigType, 0);
+ if (der->sigAlgoSz <= 0)
+ return ALGO_ID_E;
+
+ /* public key */
+ if (cert->keyType == RSA_KEY) {
+ if (rsaKey == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
+ sizeof(der->publicKey), 1);
+ if (der->publicKeySz <= 0)
+ return PUBLIC_KEY_E;
+ }
+
+#ifdef HAVE_ECC
+ if (cert->keyType == ECC_KEY) {
+ if (eccKey == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
+ if (der->publicKeySz <= 0)
+ return PUBLIC_KEY_E;
+ }
+#endif /* HAVE_ECC */
+
+#ifdef HAVE_NTRU
+ if (cert->keyType == NTRU_KEY) {
+ word32 rc;
+ word16 encodedSz;
+
+ 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;
+ }
+#endif /* HAVE_NTRU */
+
+ 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)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)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;
+
+ /* 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 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, 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)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;
+ }
+
+ switch (sigAlgoType) {
+ #ifndef NO_MD5
+ case CTC_MD5wRSA:
+ if ((ret = wc_Md5Hash(buffer, sz, certSignCtx->digest)) == 0) {
+ typeH = MD5h;
+ digestSz = MD5_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifndef NO_SHA
+ case CTC_SHAwRSA:
+ case CTC_SHAwECDSA:
+ if ((ret = wc_ShaHash(buffer, sz, certSignCtx->digest)) == 0) {
+ typeH = SHAh;
+ digestSz = SHA_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA224
+ case CTC_SHA224wRSA:
+ case CTC_SHA224wECDSA:
+ if ((ret = wc_Sha224Hash(buffer, sz, certSignCtx->digest)) == 0) {
+ typeH = SHA224h;
+ digestSz = SHA224_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifndef NO_SHA256
+ case CTC_SHA256wRSA:
+ case CTC_SHA256wECDSA:
+ if ((ret = wc_Sha256Hash(buffer, sz, certSignCtx->digest)) == 0) {
+ typeH = SHA256h;
+ digestSz = SHA256_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA384
+ case CTC_SHA384wRSA:
+ case CTC_SHA384wECDSA:
+ if ((ret = wc_Sha384Hash(buffer, sz, certSignCtx->digest)) == 0) {
+ typeH = SHA384h;
+ digestSz = SHA384_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ #ifdef WOLFSSL_SHA512
+ case CTC_SHA512wRSA:
+ case CTC_SHA512wECDSA:
+ if ((ret = wc_Sha512Hash(buffer, sz, certSignCtx->digest)) == 0) {
+ typeH = SHA512h;
+ digestSz = SHA512_DIGEST_SIZE;
+ }
+ break;
+ #endif
+ default:
+ WOLFSSL_MSG("MakeSignautre called with unsupported type");
+ ret = ALGO_ID_E;
+ }
+
+ /* 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 */
+ 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)
+{
+ int ret;
+#ifdef WOLFSSL_SMALL_STACK
+ DerCert* der;
+#else
+ DerCert der[1];
+#endif
+
+ cert->keyType = eccKey ? ECC_KEY : (rsaKey ? RSA_KEY : NTRU_KEY);
+
+#ifdef WOLFSSL_SMALL_STACK
+ der = (DerCert*)XMALLOC(sizeof(DerCert), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (der == NULL)
+ return MEMORY_E;
+#endif
+
+ ret = EncodeCert(cert, der, rsaKey, eccKey, rng, ntruKey, ntruSz);
+ 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret;
+}
+
+
+/* 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);
+}
+
+
+#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);
+}
+
+#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)
+{
+ (void)eccKey;
+
+ if (cert == NULL || der == NULL)
+ return BAD_FUNC_ARG;
+
+ /* 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 */
+ if (cert->keyType == RSA_KEY) {
+ if (rsaKey == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
+ sizeof(der->publicKey), 1);
+ if (der->publicKeySz <= 0)
+ return PUBLIC_KEY_E;
+ }
+
+#ifdef HAVE_ECC
+ if (cert->keyType == ECC_KEY) {
+ if (eccKey == NULL)
+ return PUBLIC_KEY_E;
+ der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
+ if (der->publicKeySz <= 0)
+ return PUBLIC_KEY_E;
+ }
+#endif /* HAVE_ECC */
+
+ /* 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)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;
+#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;
+ }
+
+#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;
+}
+
+
+int wc_MakeCertReq(Cert* cert, byte* derBuffer, word32 derSz,
+ RsaKey* rsaKey, ecc_key* eccKey)
+{
+ int ret;
+#ifdef WOLFSSL_SMALL_STACK
+ DerCert* der;
+#else
+ DerCert der[1];
+#endif
+
+ cert->keyType = eccKey ? ECC_KEY : RSA_KEY;
+
+#ifdef WOLFSSL_SMALL_STACK
+ der = (DerCert*)XMALLOC(sizeof(DerCert), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (der == NULL)
+ return MEMORY_E;
+#endif
+
+ ret = EncodeCertReq(cert, der, rsaKey, eccKey);
+
+ 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret;
+}
+
+#endif /* WOLFSSL_CERT_REQ */
+
+
+int wc_SignCert(int requestSz, int sType, byte* buffer, word32 buffSz,
+ RsaKey* rsaKey, ecc_key* eccKey, 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) {
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ certSignCtx = &rsaKey->certSignCtx;
+ #endif
+ heap = rsaKey->heap;
+ }
+ else if (eccKey) {
+ #ifdef WOLFSSL_ASYNC_CRYPT
+ certSignCtx = &eccKey->certSignCtx;
+ #endif
+ heap = eccKey->heap;
+ }
+
+#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, rng, sType, heap);
+ if (sigSz == WC_PENDING_E)
+ 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_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 RSA or ECC public key */
+static int SetKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey,
+ byte *ntruKey, word16 ntruKeySz, int kid_type)
+{
+ byte *buffer;
+ int bufferSz, ret;
+
+#ifndef HAVE_NTRU
+ (void)ntruKeySz;
+#endif
+
+ if (cert == NULL || (rsakey == NULL && eckey == NULL && ntruKey == NULL) ||
+ (rsakey != NULL && eckey != NULL) ||
+ (rsakey != NULL && ntruKey != NULL) ||
+ (ntruKey != NULL && eckey != 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;
+
+ /* RSA public key */
+ if (rsakey != NULL)
+ bufferSz = SetRsaPublicKey(buffer, rsakey, MAX_PUBLIC_KEY_SZ, 0);
+#ifdef HAVE_ECC
+ /* ECC public key */
+ else if (eckey != NULL)
+ bufferSz = SetEccPublicKey(buffer, eckey, 0);
+#endif /* HAVE_ECC */
+#ifdef HAVE_NTRU
+ /* NTRU public key */
+ else 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;
+ }
+#endif
+ else
+ bufferSz = -1;
+
+ 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 = SHA256_DIGEST_SIZE;
+ }
+ else if (kid_type == AKID_TYPE) {
+ ret = wc_Sha256Hash(buffer, bufferSz, cert->akid);
+ cert->akidSz = 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 = SHA_DIGEST_SIZE;
+ }
+ else if (kid_type == AKID_TYPE) {
+ ret = wc_ShaHash(buffer, bufferSz, cert->akid);
+ cert->akidSz = SHA_DIGEST_SIZE;
+ }
+ else
+ ret = BAD_FUNC_ARG;
+#endif /* NO_SHA */
+
+ XFREE(buffer, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
+ return ret;
+}
+
+/* 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, 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, SKID_TYPE);
+}
+#endif
+
+/* 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, 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 = wolfSSL_PemPubKeyToDer(file, der, MAX_PUBLIC_KEY_SZ);
+ if (derSz <= 0)
+ {
+ XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
+ return derSz;
+ }
+
+ /* Load PubKey in internal structure */
+ 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) {
+ WOLFSSL_MSG("wc_RsaPublicKeyDecode failed");
+ wc_FreeRsaKey(rsakey);
+ XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
+ rsakey = NULL;
+#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);
+ 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);
+
+ wc_FreeRsaKey(rsakey);
+ XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
+#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),
+ NULL, 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ #endif
+ return ret;
+ }
+
+ /* Subject Key Id not found !! */
+ if (decoded->extSubjKeyIdSet == 0) {
+ FreeDecodedCert(decoded);
+ #ifdef WOLFSSL_SMALL_STACK
+ XFREE(decoded, NULL, 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, NULL, 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, NULL, 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 = wolfSSL_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;
+
+ str = (char *)XMALLOC(XSTRLEN(value)+1, cert->heap,
+ DYNAMIC_TYPE_TMP_BUFFER);
+ if (str == NULL)
+ return MEMORY_E;
+
+ XMEMSET(str, 0, XSTRLEN(value)+1);
+ XSTRNCPY(str, value, XSTRLEN(value));
+
+ /* parse value, and set corresponding Key Usage value */
+ token = XSTRTOK(str, ",", &ptr);
+ 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;
+}
+#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), 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->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, NULL, 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), 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->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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret < 0 ? ret : 0;
+}
+
+
+#endif /* WOLFSSL_ALT_NAMES && !NO_RSA */
+
+
+/* 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;
+ strncpy(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;
+ strncpy(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;
+ strncpy(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;
+ strncpy(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;
+ strncpy(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;
+ strncpy(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;
+ strncpy(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;
+ strncpy(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 = wolfSSL_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 = wolfSSL_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 atl 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 = wolfSSL_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;
+ 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
+
+ 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;
+
+ 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, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (priv == NULL)
+ return MEMORY_E;
+
+ pub = (byte*)XMALLOC(2*(ECC_MAXSIZE+1), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ if (pub == NULL) {
+ XFREE(priv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ return MEMORY_E;
+ }
+#endif
+
+ /* priv key */
+ privSz = length;
+ XMEMCPY(priv, &input[*inOutIdx], privSz);
+ *inOutIdx += length;
+
+ if ((*inOutIdx + 1) > inSz)
+ return BUFFER_E;
+
+ /* 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) {
+ /* 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;
+ ret = wc_ecc_import_private_key_ex(priv, privSz, pub,
+ pubSz, key, curve_id);
+ }
+ else
+ ret = BUFFER_E;
+ }
+ }
+ }
+
+#ifdef WOLFSSL_SMALL_STACK
+ XFREE(priv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+ XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+ return ret;
+}
+
+
+int wc_EccPublicKeyDecode(const byte* input, word32* inOutIdx,
+ ecc_key* key, word32 inSz)
+{
+ int length;
+ int ret;
+#ifdef ECC_CHECK_PUBLIC_KEY_OID
+ word32 oidSum;
+#endif
+
+ 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;
+
+ /* ecc params information */
+#ifdef ECC_CHECK_PUBLIC_KEY_OID
+ ret = GetObjectId(input, inOutIdx, &oidSum, oidIgnoreType, inSz);
+ if (ret != 0)
+ return ret;
+ if (CheckCurve(oidSum) < 0)
+ return ECC_CURVE_OID_E;
+#else
+ ret = SkipObjectId(input, inOutIdx, inSz);
+ if (ret != 0)
+ return ret;
+#endif
+
+ /* 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(input + *inOutIdx, inSz - *inOutIdx, key) != 0)
+ return ASN_ECC_KEY_E;
+
+ return 0;
+}
+
+
+#ifdef WOLFSSL_KEY_GEN
+
+/* 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);
+}
+
+#endif /* WOLFSSL_KEY_GEN */
+
+#endif /* HAVE_ECC */
+
+
+#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 length;
+
+ WOLFSSL_ENTER("GetBasicDate");
+
+ *format = source[*idx];
+ *idx += 1;
+ if (*format != ASN_UTC_TIME && *format != ASN_GENERALIZED_TIME)
+ return ASN_TIME_E;
+
+ 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;
+
+ XMEMCPY(date, &source[*idx], length);
+ *idx += 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(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(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,
+ cm);
+ if (ret < 0) {
+ WOLFSSL_MSG("\tOCSP Responder certificate parsing failed");
+ FreeDecodedCert(&cert);
+ return ret;
+ }
+
+ /* 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;
+ }
+ }
+
+ *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, snSz, extSz, totalSz;
+ int i;
+
+ 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);
+ extSz = 0;
+
+ 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 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 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_CRL);
+ 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_CRL);
+ return ASN_PARSE_E;
+ }
+
+ /* add to list */
+ rc->next = dcrl->certs;
+ dcrl->certs = rc;
+ dcrl->totalCerts++;
+
+
+ /* get date */
+ b = buff[*idx];
+ *idx += 1;
+
+ if (b != ASN_UTC_TIME && b != ASN_GENERALIZED_TIME) {
+ WOLFSSL_MSG("Expecting Date");
+ return ASN_PARSE_E;
+ }
+
+ if (GetLength(buff, idx, &len, maxIdx) < 0)
+ return ASN_PARSE_E;
+
+ /* skip for now */
+ *idx += len;
+
+ 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;
+}
+
+
+/* prase crl buffer into decoded state, 0 on success */
+int ParseCRL(DecodedCRL* dcrl, const byte* buff, word32 sz, void* cm)
+{
+ int ret = 0, version, len, doNextDate = 1;
+ word32 oid, idx = 0, dateIdx;
+ Signer* ca = NULL;
+
+ WOLFSSL_MSG("ParseCRL");
+
+ /* raw crl hash */
+ /* hash here if needed for optimized comparisons
+ * 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) {
+ SignatureCtx sigCtx;
+
+ WOLFSSL_MSG("Found CRL issuer CA");
+ /* 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, dcrl->heap, INVALID_DEVID);
+ if (ConfirmSignature(&sigCtx, buff + dcrl->certBegin,
+ dcrl->sigIndex - dcrl->certBegin,
+ ca->publicKey, ca->pubKeySize, ca->keyOID,
+ dcrl->signature, dcrl->sigLength, dcrl->signatureOID) != 0) {
+ WOLFSSL_MSG("CRL Confirm signature failed");
+ return ASN_CRL_CONFIRM_E;
+ }
+ }
+ else {
+ WOLFSSL_MSG("Did NOT find CRL issuer CA");
+ return ASN_CRL_NO_SIGNER_E;
+ }
+
+ return ret;
+}
+
+#endif /* HAVE_CRL */
+
+#undef ERROR_OUT
+
+#endif /* !NO_ASN */
+
+#ifdef WOLFSSL_SEP
+
+
+#endif /* WOLFSSL_SEP */
+