Diff: wolfcrypt/src/pwdbased.c

Revision:

3:6f956bdb3073

Parent:

2:28278596c2a2

Child:

4:1b0d80432c79

--- a/wolfcrypt/src/pwdbased.c	Tue Jul 21 11:37:09 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,563 +0,0 @@
-/* pwdbased.c
- *
- * Copyright (C) 2006-2015 wolfSSL Inc.
- *
- * This file is part of wolfSSL. (formerly known as CyaSSL)
- *
- * 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 02110-1301, USA
- */
-
-#ifdef HAVE_CONFIG_H
-    #include <config.h>
-#endif
-
-#include <wolfssl/wolfcrypt/settings.h>
-
-#ifndef NO_PWDBASED
-
-#ifdef WOLFSSL_PIC32MZ_HASH
-    #ifndef NO_MD5
-        #define wc_InitMd5   wc_InitMd5_sw
-        #define wc_Md5Update wc_Md5Update_sw
-        #define wc_Md5Final  wc_Md5Final_sw
-    #endif /* NO_MD5 */
-
-    #define wc_InitSha   wc_InitSha_sw
-    #define wc_ShaUpdate wc_ShaUpdate_sw
-    #define wc_ShaFinal  wc_ShaFinal_sw
-
-    #define wc_InitSha256   wc_InitSha256_sw
-    #define wc_Sha256Update wc_Sha256Update_sw
-    #define wc_Sha256Final  wc_Sha256Final_sw
-#endif
-
-#include <wolfssl/wolfcrypt/pwdbased.h>
-#include <wolfssl/wolfcrypt/hmac.h>
-#include <wolfssl/wolfcrypt/integer.h>
-#include <wolfssl/wolfcrypt/error-crypt.h>
-#if defined(WOLFSSL_SHA512) || defined(WOLFSSL_SHA384)
-    #include <wolfssl/wolfcrypt/sha512.h>
-#endif
-
-#ifdef NO_INLINE
-    #include <wolfssl/wolfcrypt/misc.h>
-#else
-    #include <wolfcrypt/src/misc.c>
-#endif
-
-#ifndef WOLFSSL_HAVE_MIN
-#define WOLFSSL_HAVE_MIN
-
-    static INLINE word32 min(word32 a, word32 b)
-    {
-        return a > b ? b : a;
-    }
-
-#endif /* WOLFSSL_HAVE_MIN */
-
-
-#ifndef NO_SHA
-/* PBKDF1 needs at least SHA available */
-int wc_PBKDF1(byte* output, const byte* passwd, int pLen, const byte* salt,
-           int sLen, int iterations, int kLen, int hashType)
-{
-    Sha  sha;
-#ifndef NO_MD5
-    Md5  md5;
-#endif
-    int  hLen = (int)SHA_DIGEST_SIZE;
-    int  i, ret = 0;
-    byte buffer[SHA_DIGEST_SIZE];  /* max size */
-
-    if (hashType != MD5 && hashType != SHA)
-        return BAD_FUNC_ARG;
-
-#ifndef NO_MD5
-    if (hashType == MD5)
-        hLen = (int)MD5_DIGEST_SIZE;
-#endif
-
-    if (kLen > hLen)
-        return BAD_FUNC_ARG;
-
-    if (iterations < 1)
-        return BAD_FUNC_ARG;
-
-    switch (hashType) {
-#ifndef NO_MD5
-        case MD5:
-            wc_InitMd5(&md5);
-            wc_Md5Update(&md5, passwd, pLen);
-            wc_Md5Update(&md5, salt,   sLen);
-            wc_Md5Final(&md5,  buffer);
-            break;
-#endif /* NO_MD5 */
-        case SHA:
-        default:
-            ret = wc_InitSha(&sha);
-            if (ret != 0)
-                return ret;
-            wc_ShaUpdate(&sha, passwd, pLen);
-            wc_ShaUpdate(&sha, salt,   sLen);
-            wc_ShaFinal(&sha,  buffer);
-            break;
-    }
-
-    for (i = 1; i < iterations; i++) {
-        if (hashType == SHA) {
-            wc_ShaUpdate(&sha, buffer, hLen);
-            wc_ShaFinal(&sha,  buffer);
-        }
-#ifndef NO_MD5
-        else {
-            wc_Md5Update(&md5, buffer, hLen);
-            wc_Md5Final(&md5,  buffer);
-        }
-#endif
-    }
-    XMEMCPY(output, buffer, kLen);
-
-    return 0;
-}
-#endif /* NO_SHA */
-
-
-int GetDigestSize(int hashType)
-{
-    int hLen;
-
-    switch (hashType) {
-#ifndef NO_MD5
-        case MD5:
-            hLen = MD5_DIGEST_SIZE;
-            break;
-#endif
-#ifndef NO_SHA
-        case SHA:
-            hLen = SHA_DIGEST_SIZE;
-            break;
-#endif
-#ifndef NO_SHA256
-        case SHA256:
-            hLen = SHA256_DIGEST_SIZE;
-            break;
-#endif
-#ifdef WOLFSSL_SHA512
-        case SHA512:
-            hLen = SHA512_DIGEST_SIZE;
-            break;
-#endif
-        default:
-            return BAD_FUNC_ARG;
-    }
-
-    return hLen;
-}
-
-
-int wc_PBKDF2(byte* output, const byte* passwd, int pLen, const byte* salt,
-           int sLen, int iterations, int kLen, int hashType)
-{
-    word32 i = 1;
-    int    hLen;
-    int    j, ret;
-    Hmac   hmac;
-#ifdef WOLFSSL_SMALL_STACK
-    byte*  buffer;
-#else
-    byte   buffer[MAX_DIGEST_SIZE];
-#endif
-
-    hLen = GetDigestSize(hashType);
-    if (hLen < 0)
-        return BAD_FUNC_ARG;
-
-#ifdef WOLFSSL_SMALL_STACK
-    buffer = (byte*)XMALLOC(MAX_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-    if (buffer == NULL)
-        return MEMORY_E;
-#endif
-
-    ret = wc_HmacSetKey(&hmac, hashType, passwd, pLen);
-
-    if (ret == 0) {
-        while (kLen) {
-            int currentLen;
-
-            ret = wc_HmacUpdate(&hmac, salt, sLen);
-            if (ret != 0)
-                break;
-
-            /* encode i */
-            for (j = 0; j < 4; j++) {
-                byte b = (byte)(i >> ((3-j) * 8));
-
-                ret = wc_HmacUpdate(&hmac, &b, 1);
-                if (ret != 0)
-                    break;
-            }
-
-            /* check ret from inside for loop */
-            if (ret != 0)
-                break;
-
-            ret = wc_HmacFinal(&hmac, buffer);
-            if (ret != 0)
-                break;
-
-            currentLen = min(kLen, hLen);
-            XMEMCPY(output, buffer, currentLen);
-
-            for (j = 1; j < iterations; j++) {
-                ret = wc_HmacUpdate(&hmac, buffer, hLen);
-                if (ret != 0)
-                    break;
-                ret = wc_HmacFinal(&hmac, buffer);
-                if (ret != 0)
-                    break;
-                xorbuf(output, buffer, currentLen);
-            }
-
-            /* check ret from inside for loop */
-            if (ret != 0)
-                break;
-
-            output += currentLen;
-            kLen   -= currentLen;
-            i++;
-        }
-    }
-
-#ifdef WOLFSSL_SMALL_STACK
-    XFREE(buffer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
-    return ret;
-}
-
-#ifdef WOLFSSL_SHA512
-    #define PBKDF_DIGEST_SIZE SHA512_BLOCK_SIZE
-#elif !defined(NO_SHA256)
-    #define PBKDF_DIGEST_SIZE SHA256_BLOCK_SIZE
-#else
-    #define PBKDF_DIGEST_SIZE SHA_DIGEST_SIZE
-#endif
-
-/* helper for wc_PKCS12_PBKDF(), sets block and digest sizes */
-int GetPKCS12HashSizes(int hashType, word32* v, word32* u)
-{
-    if (!v || !u)
-        return BAD_FUNC_ARG;
-
-    switch (hashType) {
-#ifndef NO_MD5
-        case MD5:
-            *v = MD5_BLOCK_SIZE;
-            *u = MD5_DIGEST_SIZE;
-            break;
-#endif
-#ifndef NO_SHA
-        case SHA:
-            *v = SHA_BLOCK_SIZE;
-            *u = SHA_DIGEST_SIZE;
-            break;
-#endif
-#ifndef NO_SHA256
-        case SHA256:
-            *v = SHA256_BLOCK_SIZE;
-            *u = SHA256_DIGEST_SIZE;
-            break;
-#endif
-#ifdef WOLFSSL_SHA512
-        case SHA512:
-            *v = SHA512_BLOCK_SIZE;
-            *u = SHA512_DIGEST_SIZE;
-            break;
-#endif
-        default:
-            return BAD_FUNC_ARG;
-    }
-
-    return 0;
-}
-
-/* helper for PKCS12_PBKDF(), does hash operation */
-int DoPKCS12Hash(int hashType, byte* buffer, word32 totalLen,
-                 byte* Ai, word32 u, int iterations)
-{
-    int i;
-    int ret = 0;
-
-    if (buffer == NULL || Ai == NULL)
-        return BAD_FUNC_ARG;
-
-    switch (hashType) {
-#ifndef NO_MD5
-        case MD5:
-            {
-                Md5 md5;
-                wc_InitMd5(&md5);
-                wc_Md5Update(&md5, buffer, totalLen);
-                wc_Md5Final(&md5, Ai);
-
-                for (i = 1; i < iterations; i++) {
-                    wc_Md5Update(&md5, Ai, u);
-                    wc_Md5Final(&md5, Ai);
-                }
-            }
-            break;
-#endif /* NO_MD5 */
-#ifndef NO_SHA
-        case SHA:
-            {
-                Sha sha;
-                ret = wc_InitSha(&sha);
-                if (ret != 0)
-                    break;
-                wc_ShaUpdate(&sha, buffer, totalLen);
-                wc_ShaFinal(&sha, Ai);
-
-                for (i = 1; i < iterations; i++) {
-                    wc_ShaUpdate(&sha, Ai, u);
-                    wc_ShaFinal(&sha, Ai);
-                }
-            }
-            break;
-#endif /* NO_SHA */
-#ifndef NO_SHA256
-        case SHA256:
-            {
-                Sha256 sha256;
-                ret = wc_InitSha256(&sha256);
-                if (ret != 0)
-                    break;
-
-                ret = wc_Sha256Update(&sha256, buffer, totalLen);
-                if (ret != 0)
-                    break;
-
-                ret = wc_Sha256Final(&sha256, Ai);
-                if (ret != 0)
-                    break;
-
-                for (i = 1; i < iterations; i++) {
-                    ret = wc_Sha256Update(&sha256, Ai, u);
-                    if (ret != 0)
-                        break;
-
-                    ret = wc_Sha256Final(&sha256, Ai);
-                    if (ret != 0)
-                        break;
-                }
-            }
-            break;
-#endif /* NO_SHA256 */
-#ifdef WOLFSSL_SHA512
-        case SHA512:
-            {
-                Sha512 sha512;
-                ret = wc_InitSha512(&sha512);
-                if (ret != 0)
-                    break;
-
-                ret = wc_Sha512Update(&sha512, buffer, totalLen);
-                if (ret != 0)
-                    break;
-
-                ret = wc_Sha512Final(&sha512, Ai);
-                if (ret != 0)
-                    break;
-
-                for (i = 1; i < iterations; i++) {
-                    ret = wc_Sha512Update(&sha512, Ai, u);
-                    if (ret != 0)
-                        break;
-
-                    ret = wc_Sha512Final(&sha512, Ai);
-                    if (ret != 0)
-                        break;
-                }
-            }
-            break;
-#endif /* WOLFSSL_SHA512 */
-
-        default:
-            ret = BAD_FUNC_ARG;
-            break;
-    }
-
-    return ret;
-}
-
-int wc_PKCS12_PBKDF(byte* output, const byte* passwd, int passLen,const byte* salt,
-                 int saltLen, int iterations, int kLen, int hashType, int id)
-{
-    /* all in bytes instead of bits */
-    word32 u, v, dLen, pLen, iLen, sLen, totalLen;
-    int    dynamic = 0;
-    int    ret = 0;
-    int    i;
-    byte   *D, *S, *P, *I;
-#ifdef WOLFSSL_SMALL_STACK
-    byte   staticBuffer[1]; /* force dynamic usage */
-#else
-    byte   staticBuffer[1024];
-#endif
-    byte*  buffer = staticBuffer;
-
-#ifdef WOLFSSL_SMALL_STACK
-    byte*  Ai;
-    byte*  B;
-#else
-    byte   Ai[PBKDF_DIGEST_SIZE];
-    byte   B[PBKDF_DIGEST_SIZE];
-#endif
-
-    if (!iterations)
-        iterations = 1;
-
-    ret = GetPKCS12HashSizes(hashType, &v, &u);
-    if (ret < 0)
-        return BAD_FUNC_ARG;
-
-#ifdef WOLFSSL_SMALL_STACK
-    Ai = (byte*)XMALLOC(PBKDF_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-    if (Ai == NULL)
-        return MEMORY_E;
-
-    B = (byte*)XMALLOC(PBKDF_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-    if (B == NULL) {
-        XFREE(Ai, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-        return MEMORY_E;
-    }
-#endif
-
-    XMEMSET(Ai, 0, PBKDF_DIGEST_SIZE);
-    XMEMSET(B,  0, PBKDF_DIGEST_SIZE);
-
-    dLen = v;
-    sLen =  v * ((saltLen + v - 1) / v);
-    if (passLen)
-        pLen = v * ((passLen + v - 1) / v);
-    else
-        pLen = 0;
-    iLen = sLen + pLen;
-
-    totalLen = dLen + sLen + pLen;
-
-    if (totalLen > sizeof(staticBuffer)) {
-        buffer = (byte*)XMALLOC(totalLen, 0, DYNAMIC_TYPE_KEY);
-        if (buffer == NULL) {
-#ifdef WOLFSSL_SMALL_STACK
-            XFREE(Ai, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-            XFREE(B,  NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-            return MEMORY_E;
-        }
-        dynamic = 1;
-    }
-
-    D = buffer;
-    S = D + dLen;
-    P = S + sLen;
-    I = S;
-
-    XMEMSET(D, id, dLen);
-
-    for (i = 0; i < (int)sLen; i++)
-        S[i] = salt[i % saltLen];
-    for (i = 0; i < (int)pLen; i++)
-        P[i] = passwd[i % passLen];
-
-    while (kLen > 0) {
-        word32 currentLen;
-        mp_int B1;
-
-        ret = DoPKCS12Hash(hashType, buffer, totalLen, Ai, u, iterations);
-        if (ret < 0)
-            break;
-
-        for (i = 0; i < (int)v; i++)
-            B[i] = Ai[i % u];
-
-        if (mp_init(&B1) != MP_OKAY)
-            ret = MP_INIT_E;
-        else if (mp_read_unsigned_bin(&B1, B, v) != MP_OKAY)
-            ret = MP_READ_E;
-        else if (mp_add_d(&B1, (mp_digit)1, &B1) != MP_OKAY)
-            ret = MP_ADD_E;
-
-        if (ret != 0) {
-            mp_clear(&B1);
-            break;
-        }
-
-        for (i = 0; i < (int)iLen; i += v) {
-            int    outSz;
-            mp_int i1;
-            mp_int res;
-
-            if (mp_init_multi(&i1, &res, NULL, NULL, NULL, NULL) != MP_OKAY) {
-                ret = MP_INIT_E;
-                break;
-            }
-            if (mp_read_unsigned_bin(&i1, I + i, v) != MP_OKAY)
-                ret = MP_READ_E;
-            else if (mp_add(&i1, &B1, &res) != MP_OKAY)
-                ret = MP_ADD_E;
-            else if ( (outSz = mp_unsigned_bin_size(&res)) < 0)
-                ret = MP_TO_E;
-            else {
-                if (outSz > (int)v) {
-                    /* take off MSB */
-                    byte  tmp[129];
-                    ret = mp_to_unsigned_bin(&res, tmp);
-                    XMEMCPY(I + i, tmp + 1, v);
-                }
-                else if (outSz < (int)v) {
-                    XMEMSET(I + i, 0, v - outSz);
-                    ret = mp_to_unsigned_bin(&res, I + i + v - outSz);
-                }
-                else
-                    ret = mp_to_unsigned_bin(&res, I + i);
-            }
-
-            mp_clear(&i1);
-            mp_clear(&res);
-            if (ret < 0) break;
-        }
-
-        currentLen = min(kLen, (int)u);
-        XMEMCPY(output, Ai, currentLen);
-        output += currentLen;
-        kLen   -= currentLen;
-        mp_clear(&B1);
-    }
-
-    if (dynamic) XFREE(buffer, 0, DYNAMIC_TYPE_KEY);
-
-#ifdef WOLFSSL_SMALL_STACK
-    XFREE(Ai, NULL, DYNAMIC_TYPE_TMP_BUFFER);
-    XFREE(B,  NULL, DYNAMIC_TYPE_TMP_BUFFER);
-#endif
-
-    return ret;
-}
-
-#undef PBKDF_DIGEST_SIZE
-
-#endif /* NO_PWDBASED */
-
-