md5.c

00001 /* md5.c
00002  *
00003  * Copyright (C) 2006-2017 wolfSSL Inc.
00004  *
00005  * This file is part of wolfSSL.
00006  *
00007  * wolfSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * wolfSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
00020  */
00021 
00022 
00023 
00024 #ifdef HAVE_CONFIG_H
00025     #include <config.h>
00026 #endif
00027 
00028 #include <wolfcrypt/settings.h>
00029 
00030 #if !defined(NO_MD5)
00031 
00032 #if defined(WOLFSSL_TI_HASH)
00033     /* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
00034 
00035 #else
00036 
00037 #include <wolfcrypt/md5.h>
00038 #include <wolfcrypt/error-crypt.h>
00039 #include <wolfcrypt/logging.h>
00040 
00041 #ifdef NO_INLINE
00042     #include <wolfcrypt/misc.h>
00043 #else
00044     #define WOLFSSL_MISC_INCLUDED
00045     #include <wolfcrypt/src/misc.c>
00046 #endif
00047 
00048 
00049 /* Hardware Acceleration */
00050 #if defined(STM32_HASH)
00051 
00052     /* Supports CubeMX HAL or Standard Peripheral Library */
00053     #define HAVE_MD5_CUST_API
00054 
00055     int wc_InitMd5_ex(wc_Md5* md5, void* heap, int devId)
00056     {
00057         if (md5 == NULL) {
00058             return BAD_FUNC_ARG;
00059         }
00060 
00061         (void)devId;
00062         (void)heap;
00063 
00064         wc_Stm32_Hash_Init(&md5->stmCtx);
00065 
00066         return 0;
00067     }
00068 
00069     int wc_Md5Update(wc_Md5* md5, const byte* data, word32 len)
00070     {
00071         int ret;
00072 
00073         if (md5 == NULL || (data == NULL && len > 0)) {
00074             return BAD_FUNC_ARG;
00075         }
00076 
00077         ret = wolfSSL_CryptHwMutexLock();
00078         if (ret == 0) {
00079             ret = wc_Stm32_Hash_Update(&md5->stmCtx, HASH_AlgoSelection_MD5,
00080                 data, len);
00081             wolfSSL_CryptHwMutexUnLock();
00082         }
00083         return ret;
00084     }
00085 
00086     int wc_Md5Final(wc_Md5* md5, byte* hash)
00087     {
00088         int ret;
00089 
00090         if (md5 == NULL || hash == NULL) {
00091             return BAD_FUNC_ARG;
00092         }
00093 
00094         ret = wolfSSL_CryptHwMutexLock();
00095         if (ret == 0) {
00096             ret = wc_Stm32_Hash_Final(&md5->stmCtx, HASH_AlgoSelection_MD5,
00097                 hash, WC_MD5_DIGEST_SIZE);
00098             wolfSSL_CryptHwMutexUnLock();
00099         }
00100 
00101         (void)wc_InitMd5(md5);  /* reset state */
00102 
00103         return ret;
00104     }
00105 
00106 #elif defined(FREESCALE_MMCAU_SHA)
00107     #include "cau_api.h"
00108     #define XTRANSFORM(S,B)  Transform((S), (B))
00109 
00110     static int Transform(wc_Md5* md5, byte* data)
00111     {
00112         int ret = wolfSSL_CryptHwMutexLock();
00113         if(ret == 0) {
00114         #ifdef FREESCALE_MMCAU_CLASSIC_SHA
00115             cau_md5_hash_n(data, 1, (unsigned char*)md5->digest);
00116         #else
00117             MMCAU_MD5_HashN(data, 1, (uint32_t*)md5->digest);
00118         #endif
00119             wolfSSL_CryptHwMutexUnLock();
00120         }
00121         return ret;
00122     }
00123 
00124 #elif defined(WOLFSSL_PIC32MZ_HASH)
00125     #include <wolfssl/wolfcrypt/port/pic32/pic32mz-crypt.h>
00126     #define HAVE_MD5_CUST_API
00127 
00128 #elif defined(WOLFSSL_IMX6_CAAM) && !defined(NO_IMX6_CAAM_HASH)
00129     /* functions implemented in wolfcrypt/src/port/caam/caam_sha.c */
00130     #define HAVE_MD5_CUST_API
00131 #else
00132     #define NEED_SOFT_MD5
00133 
00134 #endif /* End Hardware Acceleration */
00135 
00136 
00137 #ifdef NEED_SOFT_MD5
00138 
00139     #define XTRANSFORM(S,B)  Transform((S))
00140 
00141     #define F1(x, y, z) (z ^ (x & (y ^ z)))
00142     #define F2(x, y, z) F1(z, x, y)
00143     #define F3(x, y, z) (x ^ y ^ z)
00144     #define F4(x, y, z) (y ^ (x | ~z))
00145 
00146     #define MD5STEP(f, w, x, y, z, data, s) \
00147         w = rotlFixed(w + f(x, y, z) + data, s) + x
00148 
00149     static int Transform(wc_Md5* md5)
00150     {
00151         /* Copy context->state[] to working vars  */
00152         word32 a = md5->digest[0];
00153         word32 b = md5->digest[1];
00154         word32 c = md5->digest[2];
00155         word32 d = md5->digest[3];
00156 
00157         MD5STEP(F1, a, b, c, d, md5->buffer[0]  + 0xd76aa478,  7);
00158         MD5STEP(F1, d, a, b, c, md5->buffer[1]  + 0xe8c7b756, 12);
00159         MD5STEP(F1, c, d, a, b, md5->buffer[2]  + 0x242070db, 17);
00160         MD5STEP(F1, b, c, d, a, md5->buffer[3]  + 0xc1bdceee, 22);
00161         MD5STEP(F1, a, b, c, d, md5->buffer[4]  + 0xf57c0faf,  7);
00162         MD5STEP(F1, d, a, b, c, md5->buffer[5]  + 0x4787c62a, 12);
00163         MD5STEP(F1, c, d, a, b, md5->buffer[6]  + 0xa8304613, 17);
00164         MD5STEP(F1, b, c, d, a, md5->buffer[7]  + 0xfd469501, 22);
00165         MD5STEP(F1, a, b, c, d, md5->buffer[8]  + 0x698098d8,  7);
00166         MD5STEP(F1, d, a, b, c, md5->buffer[9]  + 0x8b44f7af, 12);
00167         MD5STEP(F1, c, d, a, b, md5->buffer[10] + 0xffff5bb1, 17);
00168         MD5STEP(F1, b, c, d, a, md5->buffer[11] + 0x895cd7be, 22);
00169         MD5STEP(F1, a, b, c, d, md5->buffer[12] + 0x6b901122,  7);
00170         MD5STEP(F1, d, a, b, c, md5->buffer[13] + 0xfd987193, 12);
00171         MD5STEP(F1, c, d, a, b, md5->buffer[14] + 0xa679438e, 17);
00172         MD5STEP(F1, b, c, d, a, md5->buffer[15] + 0x49b40821, 22);
00173 
00174         MD5STEP(F2, a, b, c, d, md5->buffer[1]  + 0xf61e2562,  5);
00175         MD5STEP(F2, d, a, b, c, md5->buffer[6]  + 0xc040b340,  9);
00176         MD5STEP(F2, c, d, a, b, md5->buffer[11] + 0x265e5a51, 14);
00177         MD5STEP(F2, b, c, d, a, md5->buffer[0]  + 0xe9b6c7aa, 20);
00178         MD5STEP(F2, a, b, c, d, md5->buffer[5]  + 0xd62f105d,  5);
00179         MD5STEP(F2, d, a, b, c, md5->buffer[10] + 0x02441453,  9);
00180         MD5STEP(F2, c, d, a, b, md5->buffer[15] + 0xd8a1e681, 14);
00181         MD5STEP(F2, b, c, d, a, md5->buffer[4]  + 0xe7d3fbc8, 20);
00182         MD5STEP(F2, a, b, c, d, md5->buffer[9]  + 0x21e1cde6,  5);
00183         MD5STEP(F2, d, a, b, c, md5->buffer[14] + 0xc33707d6,  9);
00184         MD5STEP(F2, c, d, a, b, md5->buffer[3]  + 0xf4d50d87, 14);
00185         MD5STEP(F2, b, c, d, a, md5->buffer[8]  + 0x455a14ed, 20);
00186         MD5STEP(F2, a, b, c, d, md5->buffer[13] + 0xa9e3e905,  5);
00187         MD5STEP(F2, d, a, b, c, md5->buffer[2]  + 0xfcefa3f8,  9);
00188         MD5STEP(F2, c, d, a, b, md5->buffer[7]  + 0x676f02d9, 14);
00189         MD5STEP(F2, b, c, d, a, md5->buffer[12] + 0x8d2a4c8a, 20);
00190 
00191         MD5STEP(F3, a, b, c, d, md5->buffer[5]  + 0xfffa3942,  4);
00192         MD5STEP(F3, d, a, b, c, md5->buffer[8]  + 0x8771f681, 11);
00193         MD5STEP(F3, c, d, a, b, md5->buffer[11] + 0x6d9d6122, 16);
00194         MD5STEP(F3, b, c, d, a, md5->buffer[14] + 0xfde5380c, 23);
00195         MD5STEP(F3, a, b, c, d, md5->buffer[1]  + 0xa4beea44,  4);
00196         MD5STEP(F3, d, a, b, c, md5->buffer[4]  + 0x4bdecfa9, 11);
00197         MD5STEP(F3, c, d, a, b, md5->buffer[7]  + 0xf6bb4b60, 16);
00198         MD5STEP(F3, b, c, d, a, md5->buffer[10] + 0xbebfbc70, 23);
00199         MD5STEP(F3, a, b, c, d, md5->buffer[13] + 0x289b7ec6,  4);
00200         MD5STEP(F3, d, a, b, c, md5->buffer[0]  + 0xeaa127fa, 11);
00201         MD5STEP(F3, c, d, a, b, md5->buffer[3]  + 0xd4ef3085, 16);
00202         MD5STEP(F3, b, c, d, a, md5->buffer[6]  + 0x04881d05, 23);
00203         MD5STEP(F3, a, b, c, d, md5->buffer[9]  + 0xd9d4d039,  4);
00204         MD5STEP(F3, d, a, b, c, md5->buffer[12] + 0xe6db99e5, 11);
00205         MD5STEP(F3, c, d, a, b, md5->buffer[15] + 0x1fa27cf8, 16);
00206         MD5STEP(F3, b, c, d, a, md5->buffer[2]  + 0xc4ac5665, 23);
00207 
00208         MD5STEP(F4, a, b, c, d, md5->buffer[0]  + 0xf4292244,  6);
00209         MD5STEP(F4, d, a, b, c, md5->buffer[7]  + 0x432aff97, 10);
00210         MD5STEP(F4, c, d, a, b, md5->buffer[14] + 0xab9423a7, 15);
00211         MD5STEP(F4, b, c, d, a, md5->buffer[5]  + 0xfc93a039, 21);
00212         MD5STEP(F4, a, b, c, d, md5->buffer[12] + 0x655b59c3,  6);
00213         MD5STEP(F4, d, a, b, c, md5->buffer[3]  + 0x8f0ccc92, 10);
00214         MD5STEP(F4, c, d, a, b, md5->buffer[10] + 0xffeff47d, 15);
00215         MD5STEP(F4, b, c, d, a, md5->buffer[1]  + 0x85845dd1, 21);
00216         MD5STEP(F4, a, b, c, d, md5->buffer[8]  + 0x6fa87e4f,  6);
00217         MD5STEP(F4, d, a, b, c, md5->buffer[15] + 0xfe2ce6e0, 10);
00218         MD5STEP(F4, c, d, a, b, md5->buffer[6]  + 0xa3014314, 15);
00219         MD5STEP(F4, b, c, d, a, md5->buffer[13] + 0x4e0811a1, 21);
00220         MD5STEP(F4, a, b, c, d, md5->buffer[4]  + 0xf7537e82,  6);
00221         MD5STEP(F4, d, a, b, c, md5->buffer[11] + 0xbd3af235, 10);
00222         MD5STEP(F4, c, d, a, b, md5->buffer[2]  + 0x2ad7d2bb, 15);
00223         MD5STEP(F4, b, c, d, a, md5->buffer[9]  + 0xeb86d391, 21);
00224 
00225         /* Add the working vars back into digest state[]  */
00226         md5->digest[0] += a;
00227         md5->digest[1] += b;
00228         md5->digest[2] += c;
00229         md5->digest[3] += d;
00230 
00231         return 0;
00232     }
00233 #endif /* NEED_SOFT_MD5 */
00234 
00235 #ifndef HAVE_MD5_CUST_API
00236 
00237 static WC_INLINE void AddLength(wc_Md5* md5, word32 len)
00238 {
00239     word32 tmp = md5->loLen;
00240     if ((md5->loLen += len) < tmp) {
00241         md5->hiLen++;                       /* carry low to high */
00242     }
00243 }
00244 
00245 static int _InitMd5(wc_Md5* md5)
00246 {
00247     int ret = 0;
00248 
00249     md5->digest[0] = 0x67452301L;
00250     md5->digest[1] = 0xefcdab89L;
00251     md5->digest[2] = 0x98badcfeL;
00252     md5->digest[3] = 0x10325476L;
00253 
00254     md5->buffLen = 0;
00255     md5->loLen   = 0;
00256     md5->hiLen   = 0;
00257 
00258     return ret;
00259 }
00260 
00261 int wc_InitMd5_ex(wc_Md5* md5, void* heap, int devId)
00262 {
00263     int ret = 0;
00264 
00265     if (md5 == NULL)
00266         return BAD_FUNC_ARG;
00267 
00268     md5->heap = heap;
00269 
00270     ret = _InitMd5(md5);
00271     if (ret != 0)
00272         return ret;
00273 
00274 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00275     ret = wolfAsync_DevCtxInit(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5,
00276                                                             md5->heap, devId);
00277 #else
00278     (void)devId;
00279 #endif
00280     return ret;
00281 }
00282 
00283 int wc_Md5Update(wc_Md5* md5, const byte* data, word32 len)
00284 {
00285     int ret = 0;
00286     byte* local;
00287 
00288     if (md5 == NULL || (data == NULL && len > 0)) {
00289         return BAD_FUNC_ARG;
00290     }
00291 
00292 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00293     if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
00294     #if defined(HAVE_INTEL_QA)
00295         return IntelQaSymMd5(&md5->asyncDev, NULL, data, len);
00296     #endif
00297     }
00298 #endif /* WOLFSSL_ASYNC_CRYPT */
00299 
00300     /* do block size increments */
00301     local = (byte*)md5->buffer;
00302 
00303     /* check that internal buffLen is valid */
00304     if (md5->buffLen >= WC_MD5_BLOCK_SIZE)
00305         return BUFFER_E;
00306 
00307     while (len) {
00308         word32 add = min(len, WC_MD5_BLOCK_SIZE - md5->buffLen);
00309         XMEMCPY(&local[md5->buffLen], data, add);
00310 
00311         md5->buffLen += add;
00312         data         += add;
00313         len          -= add;
00314 
00315         if (md5->buffLen == WC_MD5_BLOCK_SIZE) {
00316         #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
00317             ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
00318         #endif
00319             XTRANSFORM(md5, local);
00320             AddLength(md5, WC_MD5_BLOCK_SIZE);
00321             md5->buffLen = 0;
00322         }
00323     }
00324     return ret;
00325 }
00326 
00327 int wc_Md5Final(wc_Md5* md5, byte* hash)
00328 {
00329     byte* local;
00330 
00331     if (md5 == NULL || hash == NULL) {
00332         return BAD_FUNC_ARG;
00333     }
00334 
00335 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00336     if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
00337     #if defined(HAVE_INTEL_QA)
00338         return IntelQaSymMd5(&md5->asyncDev, hash, NULL, WC_MD5_DIGEST_SIZE);
00339     #endif
00340     }
00341 #endif /* WOLFSSL_ASYNC_CRYPT */
00342 
00343     local = (byte*)md5->buffer;
00344 
00345     AddLength(md5, md5->buffLen);  /* before adding pads */
00346     local[md5->buffLen++] = 0x80;  /* add 1 */
00347 
00348     /* pad with zeros */
00349     if (md5->buffLen > WC_MD5_PAD_SIZE) {
00350         XMEMSET(&local[md5->buffLen], 0, WC_MD5_BLOCK_SIZE - md5->buffLen);
00351         md5->buffLen += WC_MD5_BLOCK_SIZE - md5->buffLen;
00352 
00353     #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
00354         ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
00355     #endif
00356         XTRANSFORM(md5, local);
00357         md5->buffLen = 0;
00358     }
00359     XMEMSET(&local[md5->buffLen], 0, WC_MD5_PAD_SIZE - md5->buffLen);
00360 
00361 #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
00362     ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
00363 #endif
00364 
00365     /* put lengths in bits */
00366     md5->hiLen = (md5->loLen >> (8*sizeof(md5->loLen) - 3)) +
00367                  (md5->hiLen << 3);
00368     md5->loLen = md5->loLen << 3;
00369 
00370     /* store lengths */
00371     /* ! length ordering dependent on digest endian type ! */
00372     XMEMCPY(&local[WC_MD5_PAD_SIZE], &md5->loLen, sizeof(word32));
00373     XMEMCPY(&local[WC_MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32));
00374 
00375     /* final transform and result to hash */
00376     XTRANSFORM(md5, local);
00377 #ifdef BIG_ENDIAN_ORDER
00378     ByteReverseWords(md5->digest, md5->digest, WC_MD5_DIGEST_SIZE);
00379 #endif
00380     XMEMCPY(hash, md5->digest, WC_MD5_DIGEST_SIZE);
00381 
00382     return _InitMd5(md5); /* reset state */
00383 }
00384 #endif /* !HAVE_MD5_CUST_API */
00385 
00386 
00387 int wc_InitMd5(wc_Md5* md5)
00388 {
00389     if (md5 == NULL) {
00390         return BAD_FUNC_ARG;
00391     }
00392     return wc_InitMd5_ex(md5, NULL, INVALID_DEVID);
00393 }
00394 
00395 void wc_Md5Free(wc_Md5* md5)
00396 {
00397     if (md5 == NULL)
00398         return;
00399 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00400     wolfAsync_DevCtxFree(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5);
00401 #endif /* WOLFSSL_ASYNC_CRYPT */
00402 }
00403 
00404 int wc_Md5GetHash(wc_Md5* md5, byte* hash)
00405 {
00406     int ret;
00407     wc_Md5 tmpMd5;
00408 
00409     if (md5 == NULL || hash == NULL)
00410         return BAD_FUNC_ARG;
00411 
00412     ret = wc_Md5Copy(md5, &tmpMd5);
00413     if (ret == 0) {
00414         ret = wc_Md5Final(&tmpMd5, hash);
00415     }
00416 
00417     return ret;
00418 }
00419 
00420 int wc_Md5Copy(wc_Md5* src, wc_Md5* dst)
00421 {
00422     int ret = 0;
00423 
00424     if (src == NULL || dst == NULL)
00425         return BAD_FUNC_ARG;
00426 
00427     XMEMCPY(dst, src, sizeof(wc_Md5));
00428 
00429 #ifdef WOLFSSL_ASYNC_CRYPT
00430     ret = wolfAsync_DevCopy(&src->asyncDev, &dst->asyncDev);
00431 #endif
00432 #ifdef WOLFSSL_PIC32MZ_HASH
00433     ret = wc_Pic32HashCopy(&src->cache, &dst->cache);
00434 #endif
00435 
00436     return ret;
00437 }
00438 
00439 #endif /* WOLFSSL_TI_HASH */
00440 #endif /* NO_MD5 */
00441