md5.c

00001 /* md5.c
00002  *
00003  * Copyright (C) 2006-2020 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 <wolfssl/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 <wolfssl/wolfcrypt/md5.h >
00038 #include <wolfssl/wolfcrypt/error-crypt.h >
00039 #include <wolfssl/wolfcrypt/logging.h >
00040 #include <wolfssl/wolfcrypt/hash.h >
00041 
00042 #ifdef NO_INLINE
00043 #include <wolfssl/wolfcrypt/misc.h>
00044 #else
00045 #define WOLFSSL_MISC_INCLUDED
00046 #include <wolfcrypt/src/misc.c>
00047 #endif
00048 
00049 
00050 /* Hardware Acceleration */
00051 #if defined(STM32_HASH)
00052 
00053 /* Supports CubeMX HAL or Standard Peripheral Library */
00054 #define HAVE_MD5_CUST_API
00055 
00056 int wc_InitMd5_ex(wc_Md5* md5, void* heap, int devId)
00057 {
00058     if (md5 == NULL) {
00059         return BAD_FUNC_ARG;
00060     }
00061 
00062     (void)devId;
00063     (void)heap;
00064 
00065     wc_Stm32_Hash_Init(&md5->stmCtx);
00066 
00067     return 0;
00068 }
00069 
00070 int wc_Md5Update(wc_Md5* md5, const byte* data, word32 len)
00071 {
00072     int ret;
00073 
00074     if (md5 == NULL || (data == NULL && len > 0)) {
00075         return BAD_FUNC_ARG;
00076     }
00077 
00078     ret = wolfSSL_CryptHwMutexLock();
00079     if (ret == 0) {
00080         ret = wc_Stm32_Hash_Update(&md5->stmCtx, HASH_AlgoSelection_MD5,
00081                                    data, len);
00082         wolfSSL_CryptHwMutexUnLock();
00083     }
00084     return ret;
00085 }
00086 
00087 int wc_Md5Final(wc_Md5* md5, byte* hash)
00088 {
00089     int ret;
00090 
00091     if (md5 == NULL || hash == NULL) {
00092         return BAD_FUNC_ARG;
00093     }
00094 
00095     ret = wolfSSL_CryptHwMutexLock();
00096     if (ret == 0) {
00097         ret = wc_Stm32_Hash_Final(&md5->stmCtx, HASH_AlgoSelection_MD5,
00098                                   hash, WC_MD5_DIGEST_SIZE);
00099         wolfSSL_CryptHwMutexUnLock();
00100     }
00101 
00102     (void)wc_InitMd5(md5);  /* reset state */
00103 
00104     return ret;
00105 }
00106 
00107 #elif defined(FREESCALE_MMCAU_SHA)
00108 
00109 #ifdef FREESCALE_MMCAU_CLASSIC_SHA
00110     #include "cau_api.h"
00111 #else
00112     #include "fsl_mmcau.h"
00113 #endif
00114 
00115 #define XTRANSFORM(S,B)       Transform((S), (B))
00116 #define XTRANSFORM_LEN(S,B,L) Transform_Len((S), (B), (L))
00117 
00118 #ifndef WC_HASH_DATA_ALIGNMENT
00119     /* these hardware API's require 4 byte (word32) alignment */
00120     #define WC_HASH_DATA_ALIGNMENT 4
00121 #endif
00122 
00123 static int Transform(wc_Md5* md5, const byte* data)
00124 {
00125     int ret = wolfSSL_CryptHwMutexLock();
00126     if (ret == 0) {
00127 #ifdef FREESCALE_MMCAU_CLASSIC_SHA
00128         cau_md5_hash_n((byte*)data, 1, (unsigned char*)md5->digest);
00129 #else
00130         MMCAU_MD5_HashN((byte*)data, 1, (uint32_t*)md5->digest);
00131 #endif
00132         wolfSSL_CryptHwMutexUnLock();
00133     }
00134     return ret;
00135 }
00136 
00137 static int Transform_Len(wc_Md5* md5, const byte* data, word32 len)
00138 {
00139     int ret = wolfSSL_CryptHwMutexLock();
00140     if (ret == 0) {
00141     #if defined(WC_HASH_DATA_ALIGNMENT) && WC_HASH_DATA_ALIGNMENT > 0
00142         if ((size_t)data % WC_HASH_DATA_ALIGNMENT) {
00143             /* data pointer is NOT aligned,
00144              * so copy and perform one block at a time */
00145             byte* local = (byte*)md5->buffer;
00146             while (len >= WC_MD5_BLOCK_SIZE) {
00147                 XMEMCPY(local, data, WC_MD5_BLOCK_SIZE);
00148             #ifdef FREESCALE_MMCAU_CLASSIC_SHA
00149                 cau_md5_hash_n(local, 1, (unsigned char*)md5->digest);
00150             #else
00151                 MMCAU_MD5_HashN(local, 1, (uint32_t*)md5->digest);
00152             #endif
00153                 data += WC_MD5_BLOCK_SIZE;
00154                 len  -= WC_MD5_BLOCK_SIZE;
00155             }
00156         }
00157         else
00158     #endif
00159         {
00160 #ifdef FREESCALE_MMCAU_CLASSIC_SHA
00161         cau_md5_hash_n((byte*)data, len / WC_MD5_BLOCK_SIZE,
00162             (unsigned char*)md5->digest);
00163 #else
00164         MMCAU_MD5_HashN((byte*)data, len / WC_MD5_BLOCK_SIZE,
00165             (uint32_t*)md5->digest);
00166 #endif
00167         }
00168         wolfSSL_CryptHwMutexUnLock();
00169     }
00170     return ret;
00171 }
00172 
00173 #elif defined(WOLFSSL_PIC32MZ_HASH)
00174 #include <wolfssl/wolfcrypt/port/pic32/pic32mz-crypt.h>
00175 #define HAVE_MD5_CUST_API
00176 
00177 #elif defined(WOLFSSL_IMX6_CAAM) && !defined(NO_IMX6_CAAM_HASH)
00178 /* functions implemented in wolfcrypt/src/port/caam/caam_sha.c */
00179 #define HAVE_MD5_CUST_API
00180 #else
00181 #define NEED_SOFT_MD5
00182 #endif /* End Hardware Acceleration */
00183 
00184 #ifdef NEED_SOFT_MD5
00185 
00186 #define XTRANSFORM(S,B)  Transform((S),(B))
00187 
00188 #define F1(x, y, z) (z ^ (x & (y ^ z)))
00189 #define F2(x, y, z) F1(z, x, y)
00190 #define F3(x, y, z) (x ^ y ^ z)
00191 #define F4(x, y, z) (y ^ (x | ~z))
00192 
00193 #define MD5STEP(f, w, x, y, z, data, s) \
00194         w = rotlFixed(w + f(x, y, z) + data, s) + x
00195 
00196 static int Transform(wc_Md5* md5, const byte* data)
00197 {
00198     word32* buffer = (word32*)data;
00199     /* Copy context->state[] to working vars  */
00200     word32 a = md5->digest[0];
00201     word32 b = md5->digest[1];
00202     word32 c = md5->digest[2];
00203     word32 d = md5->digest[3];
00204 
00205     MD5STEP(F1, a, b, c, d, buffer[0]  + 0xd76aa478,  7);
00206     MD5STEP(F1, d, a, b, c, buffer[1]  + 0xe8c7b756, 12);
00207     MD5STEP(F1, c, d, a, b, buffer[2]  + 0x242070db, 17);
00208     MD5STEP(F1, b, c, d, a, buffer[3]  + 0xc1bdceee, 22);
00209     MD5STEP(F1, a, b, c, d, buffer[4]  + 0xf57c0faf,  7);
00210     MD5STEP(F1, d, a, b, c, buffer[5]  + 0x4787c62a, 12);
00211     MD5STEP(F1, c, d, a, b, buffer[6]  + 0xa8304613, 17);
00212     MD5STEP(F1, b, c, d, a, buffer[7]  + 0xfd469501, 22);
00213     MD5STEP(F1, a, b, c, d, buffer[8]  + 0x698098d8,  7);
00214     MD5STEP(F1, d, a, b, c, buffer[9]  + 0x8b44f7af, 12);
00215     MD5STEP(F1, c, d, a, b, buffer[10] + 0xffff5bb1, 17);
00216     MD5STEP(F1, b, c, d, a, buffer[11] + 0x895cd7be, 22);
00217     MD5STEP(F1, a, b, c, d, buffer[12] + 0x6b901122,  7);
00218     MD5STEP(F1, d, a, b, c, buffer[13] + 0xfd987193, 12);
00219     MD5STEP(F1, c, d, a, b, buffer[14] + 0xa679438e, 17);
00220     MD5STEP(F1, b, c, d, a, buffer[15] + 0x49b40821, 22);
00221 
00222     MD5STEP(F2, a, b, c, d, buffer[1]  + 0xf61e2562,  5);
00223     MD5STEP(F2, d, a, b, c, buffer[6]  + 0xc040b340,  9);
00224     MD5STEP(F2, c, d, a, b, buffer[11] + 0x265e5a51, 14);
00225     MD5STEP(F2, b, c, d, a, buffer[0]  + 0xe9b6c7aa, 20);
00226     MD5STEP(F2, a, b, c, d, buffer[5]  + 0xd62f105d,  5);
00227     MD5STEP(F2, d, a, b, c, buffer[10] + 0x02441453,  9);
00228     MD5STEP(F2, c, d, a, b, buffer[15] + 0xd8a1e681, 14);
00229     MD5STEP(F2, b, c, d, a, buffer[4]  + 0xe7d3fbc8, 20);
00230     MD5STEP(F2, a, b, c, d, buffer[9]  + 0x21e1cde6,  5);
00231     MD5STEP(F2, d, a, b, c, buffer[14] + 0xc33707d6,  9);
00232     MD5STEP(F2, c, d, a, b, buffer[3]  + 0xf4d50d87, 14);
00233     MD5STEP(F2, b, c, d, a, buffer[8]  + 0x455a14ed, 20);
00234     MD5STEP(F2, a, b, c, d, buffer[13] + 0xa9e3e905,  5);
00235     MD5STEP(F2, d, a, b, c, buffer[2]  + 0xfcefa3f8,  9);
00236     MD5STEP(F2, c, d, a, b, buffer[7]  + 0x676f02d9, 14);
00237     MD5STEP(F2, b, c, d, a, buffer[12] + 0x8d2a4c8a, 20);
00238 
00239     MD5STEP(F3, a, b, c, d, buffer[5]  + 0xfffa3942,  4);
00240     MD5STEP(F3, d, a, b, c, buffer[8]  + 0x8771f681, 11);
00241     MD5STEP(F3, c, d, a, b, buffer[11] + 0x6d9d6122, 16);
00242     MD5STEP(F3, b, c, d, a, buffer[14] + 0xfde5380c, 23);
00243     MD5STEP(F3, a, b, c, d, buffer[1]  + 0xa4beea44,  4);
00244     MD5STEP(F3, d, a, b, c, buffer[4]  + 0x4bdecfa9, 11);
00245     MD5STEP(F3, c, d, a, b, buffer[7]  + 0xf6bb4b60, 16);
00246     MD5STEP(F3, b, c, d, a, buffer[10] + 0xbebfbc70, 23);
00247     MD5STEP(F3, a, b, c, d, buffer[13] + 0x289b7ec6,  4);
00248     MD5STEP(F3, d, a, b, c, buffer[0]  + 0xeaa127fa, 11);
00249     MD5STEP(F3, c, d, a, b, buffer[3]  + 0xd4ef3085, 16);
00250     MD5STEP(F3, b, c, d, a, buffer[6]  + 0x04881d05, 23);
00251     MD5STEP(F3, a, b, c, d, buffer[9]  + 0xd9d4d039,  4);
00252     MD5STEP(F3, d, a, b, c, buffer[12] + 0xe6db99e5, 11);
00253     MD5STEP(F3, c, d, a, b, buffer[15] + 0x1fa27cf8, 16);
00254     MD5STEP(F3, b, c, d, a, buffer[2]  + 0xc4ac5665, 23);
00255 
00256     MD5STEP(F4, a, b, c, d, buffer[0]  + 0xf4292244,  6);
00257     MD5STEP(F4, d, a, b, c, buffer[7]  + 0x432aff97, 10);
00258     MD5STEP(F4, c, d, a, b, buffer[14] + 0xab9423a7, 15);
00259     MD5STEP(F4, b, c, d, a, buffer[5]  + 0xfc93a039, 21);
00260     MD5STEP(F4, a, b, c, d, buffer[12] + 0x655b59c3,  6);
00261     MD5STEP(F4, d, a, b, c, buffer[3]  + 0x8f0ccc92, 10);
00262     MD5STEP(F4, c, d, a, b, buffer[10] + 0xffeff47d, 15);
00263     MD5STEP(F4, b, c, d, a, buffer[1]  + 0x85845dd1, 21);
00264     MD5STEP(F4, a, b, c, d, buffer[8]  + 0x6fa87e4f,  6);
00265     MD5STEP(F4, d, a, b, c, buffer[15] + 0xfe2ce6e0, 10);
00266     MD5STEP(F4, c, d, a, b, buffer[6]  + 0xa3014314, 15);
00267     MD5STEP(F4, b, c, d, a, buffer[13] + 0x4e0811a1, 21);
00268     MD5STEP(F4, a, b, c, d, buffer[4]  + 0xf7537e82,  6);
00269     MD5STEP(F4, d, a, b, c, buffer[11] + 0xbd3af235, 10);
00270     MD5STEP(F4, c, d, a, b, buffer[2]  + 0x2ad7d2bb, 15);
00271     MD5STEP(F4, b, c, d, a, buffer[9]  + 0xeb86d391, 21);
00272 
00273     /* Add the working vars back into digest state[]  */
00274     md5->digest[0] += a;
00275     md5->digest[1] += b;
00276     md5->digest[2] += c;
00277     md5->digest[3] += d;
00278 
00279     return 0;
00280 }
00281 #endif /* NEED_SOFT_MD5 */
00282 
00283 #ifndef HAVE_MD5_CUST_API
00284 
00285 static WC_INLINE void AddLength(wc_Md5* md5, word32 len)
00286 {
00287     word32 tmp = md5->loLen;
00288     if ((md5->loLen += len) < tmp) {
00289         md5->hiLen++;                       /* carry low to high */
00290     }
00291 }
00292 
00293 static int _InitMd5(wc_Md5* md5)
00294 {
00295     int ret = 0;
00296 
00297     md5->digest[0] = 0x67452301L;
00298     md5->digest[1] = 0xefcdab89L;
00299     md5->digest[2] = 0x98badcfeL;
00300     md5->digest[3] = 0x10325476L;
00301 
00302     md5->buffLen = 0;
00303     md5->loLen   = 0;
00304     md5->hiLen   = 0;
00305 #if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
00306     md5->flags = 0;
00307 #endif
00308 
00309     return ret;
00310 }
00311 
00312 int wc_InitMd5_ex(wc_Md5* md5, void* heap, int devId)
00313 {
00314     int ret = 0;
00315 
00316     if (md5 == NULL)
00317         return BAD_FUNC_ARG;
00318 
00319     md5->heap = heap;
00320 
00321     ret = _InitMd5(md5);
00322     if (ret != 0)
00323         return ret;
00324 
00325 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00326     ret = wolfAsync_DevCtxInit(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5,
00327                                md5->heap, devId);
00328 #else
00329     (void)devId;
00330 #endif
00331     return ret;
00332 }
00333 
00334 /* do block size increments/updates */
00335 int wc_Md5Update(wc_Md5* md5, const byte* data, word32 len)
00336 {
00337     int ret = 0;
00338     word32 blocksLen;
00339     byte* local;
00340 
00341     if (md5 == NULL || (data == NULL && len > 0)) {
00342         return BAD_FUNC_ARG;
00343     }
00344 
00345 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00346     if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
00347 #if defined(HAVE_INTEL_QA)
00348         return IntelQaSymMd5(&md5->asyncDev, NULL, data, len);
00349 #endif
00350     }
00351 #endif /* WOLFSSL_ASYNC_CRYPT */
00352 
00353     /* check that internal buffLen is valid */
00354     if (md5->buffLen >= WC_MD5_BLOCK_SIZE)
00355         return BUFFER_E;
00356 
00357     if (data == NULL && len == 0) {
00358         /* valid, but do nothing */
00359         return 0;
00360     }
00361 
00362     /* add length for final */
00363     AddLength(md5, len);
00364 
00365     local = (byte*)md5->buffer;
00366 
00367     /* process any remainder from previous operation */
00368     if (md5->buffLen > 0) {
00369         blocksLen = min(len, WC_MD5_BLOCK_SIZE - md5->buffLen);
00370         XMEMCPY(&local[md5->buffLen], data, blocksLen);
00371 
00372         md5->buffLen += blocksLen;
00373         data         += blocksLen;
00374         len          -= blocksLen;
00375 
00376         if (md5->buffLen == WC_MD5_BLOCK_SIZE) {
00377         #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
00378             ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
00379         #endif
00380 
00381             ret = XTRANSFORM(md5, (const byte*)local);
00382             if (ret != 0)
00383                 return ret;
00384 
00385             md5->buffLen = 0;
00386         }
00387     }
00388 
00389     /* process blocks */
00390 #ifdef XTRANSFORM_LEN
00391     /* get number of blocks */
00392     /* 64-1 = 0x3F (~ Inverted = 0xFFFFFFC0) */
00393     /* len (masked by 0xFFFFFFC0) returns block aligned length */
00394     blocksLen = len & ~(WC_MD5_BLOCK_SIZE-1);
00395     if (blocksLen > 0) {
00396         /* Byte reversal performed in function if required. */
00397         XTRANSFORM_LEN(md5, data, blocksLen);
00398         data += blocksLen;
00399         len  -= blocksLen;
00400     }
00401 #else
00402     while (len >= WC_MD5_BLOCK_SIZE) {
00403         word32* local32 = md5->buffer;
00404         /* optimization to avoid memcpy if data pointer is properly aligned */
00405         /* Big Endian requires byte swap, so can't use data directly */
00406     #if defined(WC_HASH_DATA_ALIGNMENT) && !defined(BIG_ENDIAN_ORDER)
00407         if (((size_t)data % WC_HASH_DATA_ALIGNMENT) == 0) {
00408             local32 = (word32*)data;
00409         }
00410         else
00411     #endif
00412         {
00413             XMEMCPY(local32, data, WC_MD5_BLOCK_SIZE);
00414         }
00415 
00416         data += WC_MD5_BLOCK_SIZE;
00417         len  -= WC_MD5_BLOCK_SIZE;
00418 
00419     #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
00420         ByteReverseWords(local32, local32, WC_MD5_BLOCK_SIZE);
00421     #endif
00422 
00423         ret = XTRANSFORM(md5, (const byte*)local32);
00424     }
00425 #endif /* XTRANSFORM_LEN */
00426 
00427     /* save remainder */
00428     if (len > 0) {
00429         XMEMCPY(local, data, len);
00430         md5->buffLen = len;
00431     }
00432 
00433     return ret;
00434 }
00435 
00436 int wc_Md5Final(wc_Md5* md5, byte* hash)
00437 {
00438     byte* local;
00439 
00440     if (md5 == NULL || hash == NULL) {
00441         return BAD_FUNC_ARG;
00442     }
00443 
00444 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00445     if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
00446 #if defined(HAVE_INTEL_QA)
00447         return IntelQaSymMd5(&md5->asyncDev, hash, NULL, WC_MD5_DIGEST_SIZE);
00448 #endif
00449     }
00450 #endif /* WOLFSSL_ASYNC_CRYPT */
00451 
00452     local = (byte*)md5->buffer;
00453 
00454     local[md5->buffLen++] = 0x80;  /* add 1 */
00455 
00456     /* pad with zeros */
00457     if (md5->buffLen > WC_MD5_PAD_SIZE) {
00458         XMEMSET(&local[md5->buffLen], 0, WC_MD5_BLOCK_SIZE - md5->buffLen);
00459         md5->buffLen += WC_MD5_BLOCK_SIZE - md5->buffLen;
00460 
00461 #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
00462         ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
00463 #endif
00464         XTRANSFORM(md5, local);
00465         md5->buffLen = 0;
00466     }
00467     XMEMSET(&local[md5->buffLen], 0, WC_MD5_PAD_SIZE - md5->buffLen);
00468 
00469 #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
00470     ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
00471 #endif
00472 
00473     /* put lengths in bits */
00474     md5->hiLen = (md5->loLen >> (8 * sizeof(md5->loLen) - 3)) +
00475                  (md5->hiLen << 3);
00476     md5->loLen = md5->loLen << 3;
00477 
00478     /* store lengths */
00479     /* ! length ordering dependent on digest endian type ! */
00480     XMEMCPY(&local[WC_MD5_PAD_SIZE], &md5->loLen, sizeof(word32));
00481     XMEMCPY(&local[WC_MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32));
00482 
00483     /* final transform and result to hash */
00484     XTRANSFORM(md5, local);
00485 #ifdef BIG_ENDIAN_ORDER
00486     ByteReverseWords(md5->digest, md5->digest, WC_MD5_DIGEST_SIZE);
00487 #endif
00488     XMEMCPY(hash, md5->digest, WC_MD5_DIGEST_SIZE);
00489 
00490     return _InitMd5(md5); /* reset state */
00491 }
00492 #endif /* !HAVE_MD5_CUST_API */
00493 
00494 
00495 int wc_InitMd5(wc_Md5* md5)
00496 {
00497     if (md5 == NULL) {
00498         return BAD_FUNC_ARG;
00499     }
00500     return wc_InitMd5_ex(md5, NULL, INVALID_DEVID);
00501 }
00502 
00503 void wc_Md5Free(wc_Md5* md5)
00504 {
00505     if (md5 == NULL)
00506         return;
00507 #if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
00508     wolfAsync_DevCtxFree(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5);
00509 #endif /* WOLFSSL_ASYNC_CRYPT */
00510 
00511 #ifdef WOLFSSL_PIC32MZ_HASH
00512     wc_Md5Pic32Free(md5);
00513 #endif
00514 }
00515 
00516 int wc_Md5GetHash(wc_Md5* md5, byte* hash)
00517 {
00518     int ret;
00519     wc_Md5 tmpMd5;
00520 
00521     if (md5 == NULL || hash == NULL)
00522         return BAD_FUNC_ARG;
00523 
00524     ret = wc_Md5Copy(md5, &tmpMd5);
00525     if (ret == 0) {
00526         ret = wc_Md5Final(&tmpMd5, hash);
00527     }
00528 
00529     return ret;
00530 }
00531 
00532 int wc_Md5Copy(wc_Md5* src, wc_Md5* dst)
00533 {
00534     int ret = 0;
00535 
00536     if (src == NULL || dst == NULL)
00537         return BAD_FUNC_ARG;
00538 
00539     XMEMCPY(dst, src, sizeof(wc_Md5));
00540 
00541 #ifdef WOLFSSL_ASYNC_CRYPT
00542     ret = wolfAsync_DevCopy(&src->asyncDev, &dst->asyncDev);
00543 #endif
00544 #ifdef WOLFSSL_PIC32MZ_HASH
00545     ret = wc_Pic32HashCopy(&src->cache, &dst->cache);
00546 #endif
00547 #if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
00548     dst->flags |= WC_HASH_FLAG_ISCOPY;
00549 #endif
00550 
00551     return ret;
00552 }
00553 
00554 #if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
00555 int wc_Md5SetFlags(wc_Md5* md5, word32 flags)
00556 {
00557     if (md5) {
00558         md5->flags = flags;
00559     }
00560     return 0;
00561 }
00562 int wc_Md5GetFlags(wc_Md5* md5, word32* flags)
00563 {
00564     if (md5 && flags) {
00565         *flags = md5->flags;
00566     }
00567     return 0;
00568 }
00569 #endif
00570 
00571 #endif /* WOLFSSL_TI_HASH */
00572 #endif /* NO_MD5 */
00573