FreeRTOS-Plus/Source/WolfSSL/wolfcrypt/src/md5.c - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 /* md5.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>

 #if !defined(NO_MD5)

 #if defined(WOLFSSL_TI_HASH)
     /* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
 #else

 #ifdef WOLFSSL_PIC32MZ_HASH
 #define wc_InitMd5   wc_InitMd5_sw
 #define wc_Md5Update wc_Md5Update_sw
 #define wc_Md5Final  wc_Md5Final_sw
 #endif

 #include <wolfssl/wolfcrypt/md5.h>
 #include <wolfssl/wolfcrypt/error-crypt.h>

 #ifdef NO_INLINE
     #include <wolfssl/wolfcrypt/misc.h>
 #else
     #include <wolfcrypt/src/misc.c>
 #endif

 #ifdef FREESCALE_MMCAU
     #include "cau_api.h"
     #define XTRANSFORM(S,B)  cau_md5_hash_n((B), 1, (unsigned char*)(S)->digest)
 #else
     #define XTRANSFORM(S,B)  Transform((S))
 #endif


 #ifdef STM32F2_HASH
     /*
      * STM32F2 hardware MD5 support through the STM32F2 standard peripheral
      * library. Documentation located in STM32F2xx Standard Peripheral Library
      * document (See note in README).
      */
     #include "stm32f2xx.h"

     void wc_InitMd5(Md5* md5)
     {
         /* STM32F2 struct notes:
          * md5->buffer  = first 4 bytes used to hold partial block if needed
          * md5->buffLen = num bytes currently stored in md5->buffer
          * md5->loLen   = num bytes that have been written to STM32 FIFO
          */
         XMEMSET(md5->buffer, 0, MD5_REG_SIZE);

         md5->buffLen = 0;
         md5->loLen = 0;

         /* initialize HASH peripheral */
         HASH_DeInit();

         /* configure algo used, algo mode, datatype */
         HASH->CR &= ~ (HASH_CR_ALGO | HASH_CR_DATATYPE | HASH_CR_MODE);
         HASH->CR |= (HASH_AlgoSelection_MD5 | HASH_AlgoMode_HASH
                  | HASH_DataType_8b);

         /* reset HASH processor */
         HASH->CR |= HASH_CR_INIT;
     }

     void wc_Md5Update(Md5* md5, const byte* data, word32 len)
     {
         word32 i = 0;
         word32 fill = 0;
         word32 diff = 0;

         /* if saved partial block is available */
         if (md5->buffLen > 0) {
             fill = 4 - md5->buffLen;

             /* if enough data to fill, fill and push to FIFO */
             if (fill <= len) {
                 XMEMCPY((byte*)md5->buffer + md5->buffLen, data, fill);
                 HASH_DataIn(*(uint32_t*)md5->buffer);

                 data += fill;
                 len -= fill;
                 md5->loLen += 4;
                 md5->buffLen = 0;
             } else {
                 /* append partial to existing stored block */
                 XMEMCPY((byte*)md5->buffer + md5->buffLen, data, len);
                 md5->buffLen += len;
                 return;
             }
         }

         /* write input block in the IN FIFO */
         for (i = 0; i < len; i += 4)
         {
             diff = len - i;
             if (diff < 4) {
                 /* store incomplete last block, not yet in FIFO */
                 XMEMSET(md5->buffer, 0, MD5_REG_SIZE);
                 XMEMCPY((byte*)md5->buffer, data, diff);
                 md5->buffLen = diff;
             } else {
                 HASH_DataIn(*(uint32_t*)data);
                 data+=4;
             }
         }

         /* keep track of total data length thus far */
         md5->loLen += (len - md5->buffLen);
     }

     void wc_Md5Final(Md5* md5, byte* hash)
     {
         __IO uint16_t nbvalidbitsdata = 0;

         /* finish reading any trailing bytes into FIFO */
         if (md5->buffLen > 0) {
             HASH_DataIn(*(uint32_t*)md5->buffer);
             md5->loLen += md5->buffLen;
         }

         /* calculate number of valid bits in last word of input data */
         nbvalidbitsdata = 8 * (md5->loLen % MD5_REG_SIZE);

         /* configure number of valid bits in last word of the data */
         HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);

         /* start HASH processor */
         HASH_StartDigest();

         /* wait until Busy flag == RESET */
         while (HASH_GetFlagStatus(HASH_FLAG_BUSY) != RESET) {}

         /* read message digest */
         md5->digest[0] = HASH->HR[0];
         md5->digest[1] = HASH->HR[1];
         md5->digest[2] = HASH->HR[2];
         md5->digest[3] = HASH->HR[3];

         ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);

         XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);

         wc_InitMd5(md5);  /* reset state */
     }

 #else /* CTaoCrypt software implementation */

 #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 */

 void wc_InitMd5(Md5* md5)
 {
     md5->digest[0] = 0x67452301L;
     md5->digest[1] = 0xefcdab89L;
     md5->digest[2] = 0x98badcfeL;
     md5->digest[3] = 0x10325476L;

     md5->buffLen = 0;
     md5->loLen   = 0;
     md5->hiLen   = 0;
 }

 #ifndef FREESCALE_MMCAU

 static void Transform(Md5* md5)
 {
 #define F1(x, y, z) (z ^ (x & (y ^ z)))
 #define F2(x, y, z) F1(z, x, y)
 #define F3(x, y, z) (x ^ y ^ z)
 #define F4(x, y, z) (y ^ (x | ~z))

 #define MD5STEP(f, w, x, y, z, data, s) \
     w = rotlFixed(w + f(x, y, z) + data, s) + x

     /* Copy context->state[] to working vars  */
     word32 a = md5->digest[0];
     word32 b = md5->digest[1];
     word32 c = md5->digest[2];
     word32 d = md5->digest[3];

     MD5STEP(F1, a, b, c, d, md5->buffer[0]  + 0xd76aa478,  7);
     MD5STEP(F1, d, a, b, c, md5->buffer[1]  + 0xe8c7b756, 12);
     MD5STEP(F1, c, d, a, b, md5->buffer[2]  + 0x242070db, 17);
     MD5STEP(F1, b, c, d, a, md5->buffer[3]  + 0xc1bdceee, 22);
     MD5STEP(F1, a, b, c, d, md5->buffer[4]  + 0xf57c0faf,  7);
     MD5STEP(F1, d, a, b, c, md5->buffer[5]  + 0x4787c62a, 12);
     MD5STEP(F1, c, d, a, b, md5->buffer[6]  + 0xa8304613, 17);
     MD5STEP(F1, b, c, d, a, md5->buffer[7]  + 0xfd469501, 22);
     MD5STEP(F1, a, b, c, d, md5->buffer[8]  + 0x698098d8,  7);
     MD5STEP(F1, d, a, b, c, md5->buffer[9]  + 0x8b44f7af, 12);
     MD5STEP(F1, c, d, a, b, md5->buffer[10] + 0xffff5bb1, 17);
     MD5STEP(F1, b, c, d, a, md5->buffer[11] + 0x895cd7be, 22);
     MD5STEP(F1, a, b, c, d, md5->buffer[12] + 0x6b901122,  7);
     MD5STEP(F1, d, a, b, c, md5->buffer[13] + 0xfd987193, 12);
     MD5STEP(F1, c, d, a, b, md5->buffer[14] + 0xa679438e, 17);
     MD5STEP(F1, b, c, d, a, md5->buffer[15] + 0x49b40821, 22);

     MD5STEP(F2, a, b, c, d, md5->buffer[1]  + 0xf61e2562,  5);
     MD5STEP(F2, d, a, b, c, md5->buffer[6]  + 0xc040b340,  9);
     MD5STEP(F2, c, d, a, b, md5->buffer[11] + 0x265e5a51, 14);
     MD5STEP(F2, b, c, d, a, md5->buffer[0]  + 0xe9b6c7aa, 20);
     MD5STEP(F2, a, b, c, d, md5->buffer[5]  + 0xd62f105d,  5);
     MD5STEP(F2, d, a, b, c, md5->buffer[10] + 0x02441453,  9);
     MD5STEP(F2, c, d, a, b, md5->buffer[15] + 0xd8a1e681, 14);
     MD5STEP(F2, b, c, d, a, md5->buffer[4]  + 0xe7d3fbc8, 20);
     MD5STEP(F2, a, b, c, d, md5->buffer[9]  + 0x21e1cde6,  5);
     MD5STEP(F2, d, a, b, c, md5->buffer[14] + 0xc33707d6,  9);
     MD5STEP(F2, c, d, a, b, md5->buffer[3]  + 0xf4d50d87, 14);
     MD5STEP(F2, b, c, d, a, md5->buffer[8]  + 0x455a14ed, 20);
     MD5STEP(F2, a, b, c, d, md5->buffer[13] + 0xa9e3e905,  5);
     MD5STEP(F2, d, a, b, c, md5->buffer[2]  + 0xfcefa3f8,  9);
     MD5STEP(F2, c, d, a, b, md5->buffer[7]  + 0x676f02d9, 14);
     MD5STEP(F2, b, c, d, a, md5->buffer[12] + 0x8d2a4c8a, 20);

     MD5STEP(F3, a, b, c, d, md5->buffer[5]  + 0xfffa3942,  4);
     MD5STEP(F3, d, a, b, c, md5->buffer[8]  + 0x8771f681, 11);
     MD5STEP(F3, c, d, a, b, md5->buffer[11] + 0x6d9d6122, 16);
     MD5STEP(F3, b, c, d, a, md5->buffer[14] + 0xfde5380c, 23);
     MD5STEP(F3, a, b, c, d, md5->buffer[1]  + 0xa4beea44,  4);
     MD5STEP(F3, d, a, b, c, md5->buffer[4]  + 0x4bdecfa9, 11);
     MD5STEP(F3, c, d, a, b, md5->buffer[7]  + 0xf6bb4b60, 16);
     MD5STEP(F3, b, c, d, a, md5->buffer[10] + 0xbebfbc70, 23);
     MD5STEP(F3, a, b, c, d, md5->buffer[13] + 0x289b7ec6,  4);
     MD5STEP(F3, d, a, b, c, md5->buffer[0]  + 0xeaa127fa, 11);
     MD5STEP(F3, c, d, a, b, md5->buffer[3]  + 0xd4ef3085, 16);
     MD5STEP(F3, b, c, d, a, md5->buffer[6]  + 0x04881d05, 23);
     MD5STEP(F3, a, b, c, d, md5->buffer[9]  + 0xd9d4d039,  4);
     MD5STEP(F3, d, a, b, c, md5->buffer[12] + 0xe6db99e5, 11);
     MD5STEP(F3, c, d, a, b, md5->buffer[15] + 0x1fa27cf8, 16);
     MD5STEP(F3, b, c, d, a, md5->buffer[2]  + 0xc4ac5665, 23);

     MD5STEP(F4, a, b, c, d, md5->buffer[0]  + 0xf4292244,  6);
     MD5STEP(F4, d, a, b, c, md5->buffer[7]  + 0x432aff97, 10);
     MD5STEP(F4, c, d, a, b, md5->buffer[14] + 0xab9423a7, 15);
     MD5STEP(F4, b, c, d, a, md5->buffer[5]  + 0xfc93a039, 21);
     MD5STEP(F4, a, b, c, d, md5->buffer[12] + 0x655b59c3,  6);
     MD5STEP(F4, d, a, b, c, md5->buffer[3]  + 0x8f0ccc92, 10);
     MD5STEP(F4, c, d, a, b, md5->buffer[10] + 0xffeff47d, 15);
     MD5STEP(F4, b, c, d, a, md5->buffer[1]  + 0x85845dd1, 21);
     MD5STEP(F4, a, b, c, d, md5->buffer[8]  + 0x6fa87e4f,  6);
     MD5STEP(F4, d, a, b, c, md5->buffer[15] + 0xfe2ce6e0, 10);
     MD5STEP(F4, c, d, a, b, md5->buffer[6]  + 0xa3014314, 15);
     MD5STEP(F4, b, c, d, a, md5->buffer[13] + 0x4e0811a1, 21);
     MD5STEP(F4, a, b, c, d, md5->buffer[4]  + 0xf7537e82,  6);
     MD5STEP(F4, d, a, b, c, md5->buffer[11] + 0xbd3af235, 10);
     MD5STEP(F4, c, d, a, b, md5->buffer[2]  + 0x2ad7d2bb, 15);
     MD5STEP(F4, b, c, d, a, md5->buffer[9]  + 0xeb86d391, 21);

     /* Add the working vars back into digest state[]  */
     md5->digest[0] += a;
     md5->digest[1] += b;
     md5->digest[2] += c;
     md5->digest[3] += d;
 }

 #endif /* FREESCALE_MMCAU */


 static INLINE void AddLength(Md5* md5, word32 len)
 {
     word32 tmp = md5->loLen;
     if ( (md5->loLen += len) < tmp)
         md5->hiLen++;                       /* carry low to high */
 }


 void wc_Md5Update(Md5* md5, const byte* data, word32 len)
 {
     /* do block size increments */
     byte* local = (byte*)md5->buffer;

     while (len) {
         word32 add = min(len, MD5_BLOCK_SIZE - md5->buffLen);
         XMEMCPY(&local[md5->buffLen], data, add);

         md5->buffLen += add;
         data         += add;
         len          -= add;

         if (md5->buffLen == MD5_BLOCK_SIZE) {
             #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
                 ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
             #endif
             XTRANSFORM(md5, local);
             AddLength(md5, MD5_BLOCK_SIZE);
             md5->buffLen = 0;
         }
     }
 }


 void wc_Md5Final(Md5* md5, byte* hash)
 {
     byte* local = (byte*)md5->buffer;

     AddLength(md5, md5->buffLen);  /* before adding pads */

     local[md5->buffLen++] = 0x80;  /* add 1 */

     /* pad with zeros */
     if (md5->buffLen > MD5_PAD_SIZE) {
         XMEMSET(&local[md5->buffLen], 0, MD5_BLOCK_SIZE - md5->buffLen);
         md5->buffLen += MD5_BLOCK_SIZE - md5->buffLen;

         #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
             ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
         #endif
         XTRANSFORM(md5, local);
         md5->buffLen = 0;
     }
     XMEMSET(&local[md5->buffLen], 0, MD5_PAD_SIZE - md5->buffLen);

     /* put lengths in bits */
     md5->hiLen = (md5->loLen >> (8*sizeof(md5->loLen) - 3)) +
                  (md5->hiLen << 3);
     md5->loLen = md5->loLen << 3;

     /* store lengths */
     #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
         ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
     #endif
     /* ! length ordering dependent on digest endian type ! */
     XMEMCPY(&local[MD5_PAD_SIZE], &md5->loLen, sizeof(word32));
     XMEMCPY(&local[MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32));

     XTRANSFORM(md5, local);
     #ifdef BIG_ENDIAN_ORDER
         ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
     #endif
     XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);

     wc_InitMd5(md5);  /* reset state */
 }

 #endif /* STM32F2_HASH */


 int wc_Md5Hash(const byte* data, word32 len, byte* hash)
 {
 #ifdef WOLFSSL_SMALL_STACK
     Md5* md5;
 #else
     Md5 md5[1];
 #endif

 #ifdef WOLFSSL_SMALL_STACK
     md5 = (Md5*)XMALLOC(sizeof(Md5), NULL, DYNAMIC_TYPE_TMP_BUFFER);
     if (md5 == NULL)
         return MEMORY_E;
 #endif

     wc_InitMd5(md5);
     wc_Md5Update(md5, data, len);
     wc_Md5Final(md5, hash);

 #ifdef WOLFSSL_SMALL_STACK
     XFREE(md5, NULL, DYNAMIC_TYPE_TMP_BUFFER);
 #endif

     return 0;
 }

 #endif /* WOLFSSL_TI_HASH */

 #endif /* NO_MD5 */
	/* md5.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>

	#if !defined(NO_MD5)

	#if defined(WOLFSSL_TI_HASH)
	/* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
	#else

	#ifdef WOLFSSL_PIC32MZ_HASH
	#define wc_InitMd5 wc_InitMd5_sw
	#define wc_Md5Update wc_Md5Update_sw
	#define wc_Md5Final wc_Md5Final_sw
	#endif

	#include <wolfssl/wolfcrypt/md5.h>
	#include <wolfssl/wolfcrypt/error-crypt.h>

	#ifdef NO_INLINE
	#include <wolfssl/wolfcrypt/misc.h>
	#else
	#include <wolfcrypt/src/misc.c>
	#endif

	#ifdef FREESCALE_MMCAU
	#include "cau_api.h"
	#define XTRANSFORM(S,B) cau_md5_hash_n((B), 1, (unsigned char*)(S)->digest)
	#else
	#define XTRANSFORM(S,B) Transform((S))
	#endif


	#ifdef STM32F2_HASH
	/*
	* STM32F2 hardware MD5 support through the STM32F2 standard peripheral
	* library. Documentation located in STM32F2xx Standard Peripheral Library
	* document (See note in README).
	*/
	#include "stm32f2xx.h"

	void wc_InitMd5(Md5* md5)
	{
	/* STM32F2 struct notes:
	* md5->buffer = first 4 bytes used to hold partial block if needed
	* md5->buffLen = num bytes currently stored in md5->buffer
	* md5->loLen = num bytes that have been written to STM32 FIFO
	*/
	XMEMSET(md5->buffer, 0, MD5_REG_SIZE);

	md5->buffLen = 0;
	md5->loLen = 0;

	/* initialize HASH peripheral */
	HASH_DeInit();

	/* configure algo used, algo mode, datatype */
	HASH->CR &= ~ (HASH_CR_ALGO \| HASH_CR_DATATYPE \| HASH_CR_MODE);
	HASH->CR \|= (HASH_AlgoSelection_MD5 \| HASH_AlgoMode_HASH
	\| HASH_DataType_8b);

	/* reset HASH processor */
	HASH->CR \|= HASH_CR_INIT;
	}

	void wc_Md5Update(Md5* md5, const byte* data, word32 len)
	{
	word32 i = 0;
	word32 fill = 0;
	word32 diff = 0;

	/* if saved partial block is available */
	if (md5->buffLen > 0) {
	fill = 4 - md5->buffLen;

	/* if enough data to fill, fill and push to FIFO */
	if (fill <= len) {
	XMEMCPY((byte*)md5->buffer + md5->buffLen, data, fill);
	HASH_DataIn((uint32_t)md5->buffer);

	data += fill;
	len -= fill;
	md5->loLen += 4;
	md5->buffLen = 0;
	} else {
	/* append partial to existing stored block */
	XMEMCPY((byte*)md5->buffer + md5->buffLen, data, len);
	md5->buffLen += len;
	return;
	}
	}

	/* write input block in the IN FIFO */
	for (i = 0; i < len; i += 4)
	{
	diff = len - i;
	if (diff < 4) {
	/* store incomplete last block, not yet in FIFO */
	XMEMSET(md5->buffer, 0, MD5_REG_SIZE);
	XMEMCPY((byte*)md5->buffer, data, diff);
	md5->buffLen = diff;
	} else {
	HASH_DataIn((uint32_t)data);
	data+=4;
	}
	}

	/* keep track of total data length thus far */
	md5->loLen += (len - md5->buffLen);
	}

	void wc_Md5Final(Md5* md5, byte* hash)
	{
	__IO uint16_t nbvalidbitsdata = 0;

	/* finish reading any trailing bytes into FIFO */
	if (md5->buffLen > 0) {
	HASH_DataIn((uint32_t)md5->buffer);
	md5->loLen += md5->buffLen;
	}

	/* calculate number of valid bits in last word of input data */
	nbvalidbitsdata = 8 * (md5->loLen % MD5_REG_SIZE);

	/* configure number of valid bits in last word of the data */
	HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);

	/* start HASH processor */
	HASH_StartDigest();

	/* wait until Busy flag == RESET */
	while (HASH_GetFlagStatus(HASH_FLAG_BUSY) != RESET) {}

	/* read message digest */
	md5->digest[0] = HASH->HR[0];
	md5->digest[1] = HASH->HR[1];
	md5->digest[2] = HASH->HR[2];
	md5->digest[3] = HASH->HR[3];

	ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);

	XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);

	wc_InitMd5(md5); /* reset state */
	}

	#else /* CTaoCrypt software implementation */

	#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 */

	void wc_InitMd5(Md5* md5)
	{
	md5->digest[0] = 0x67452301L;
	md5->digest[1] = 0xefcdab89L;
	md5->digest[2] = 0x98badcfeL;
	md5->digest[3] = 0x10325476L;

	md5->buffLen = 0;
	md5->loLen = 0;
	md5->hiLen = 0;
	}

	#ifndef FREESCALE_MMCAU

	static void Transform(Md5* md5)
	{
	#define F1(x, y, z) (z ^ (x & (y ^ z)))
	#define F2(x, y, z) F1(z, x, y)
	#define F3(x, y, z) (x ^ y ^ z)
	#define F4(x, y, z) (y ^ (x \| ~z))

	#define MD5STEP(f, w, x, y, z, data, s) \
	w = rotlFixed(w + f(x, y, z) + data, s) + x

	/* Copy context->state[] to working vars */
	word32 a = md5->digest[0];
	word32 b = md5->digest[1];
	word32 c = md5->digest[2];
	word32 d = md5->digest[3];

	MD5STEP(F1, a, b, c, d, md5->buffer[0] + 0xd76aa478, 7);
	MD5STEP(F1, d, a, b, c, md5->buffer[1] + 0xe8c7b756, 12);
	MD5STEP(F1, c, d, a, b, md5->buffer[2] + 0x242070db, 17);
	MD5STEP(F1, b, c, d, a, md5->buffer[3] + 0xc1bdceee, 22);
	MD5STEP(F1, a, b, c, d, md5->buffer[4] + 0xf57c0faf, 7);
	MD5STEP(F1, d, a, b, c, md5->buffer[5] + 0x4787c62a, 12);
	MD5STEP(F1, c, d, a, b, md5->buffer[6] + 0xa8304613, 17);
	MD5STEP(F1, b, c, d, a, md5->buffer[7] + 0xfd469501, 22);
	MD5STEP(F1, a, b, c, d, md5->buffer[8] + 0x698098d8, 7);
	MD5STEP(F1, d, a, b, c, md5->buffer[9] + 0x8b44f7af, 12);
	MD5STEP(F1, c, d, a, b, md5->buffer[10] + 0xffff5bb1, 17);
	MD5STEP(F1, b, c, d, a, md5->buffer[11] + 0x895cd7be, 22);
	MD5STEP(F1, a, b, c, d, md5->buffer[12] + 0x6b901122, 7);
	MD5STEP(F1, d, a, b, c, md5->buffer[13] + 0xfd987193, 12);
	MD5STEP(F1, c, d, a, b, md5->buffer[14] + 0xa679438e, 17);
	MD5STEP(F1, b, c, d, a, md5->buffer[15] + 0x49b40821, 22);

	MD5STEP(F2, a, b, c, d, md5->buffer[1] + 0xf61e2562, 5);
	MD5STEP(F2, d, a, b, c, md5->buffer[6] + 0xc040b340, 9);
	MD5STEP(F2, c, d, a, b, md5->buffer[11] + 0x265e5a51, 14);
	MD5STEP(F2, b, c, d, a, md5->buffer[0] + 0xe9b6c7aa, 20);
	MD5STEP(F2, a, b, c, d, md5->buffer[5] + 0xd62f105d, 5);
	MD5STEP(F2, d, a, b, c, md5->buffer[10] + 0x02441453, 9);
	MD5STEP(F2, c, d, a, b, md5->buffer[15] + 0xd8a1e681, 14);
	MD5STEP(F2, b, c, d, a, md5->buffer[4] + 0xe7d3fbc8, 20);
	MD5STEP(F2, a, b, c, d, md5->buffer[9] + 0x21e1cde6, 5);
	MD5STEP(F2, d, a, b, c, md5->buffer[14] + 0xc33707d6, 9);
	MD5STEP(F2, c, d, a, b, md5->buffer[3] + 0xf4d50d87, 14);
	MD5STEP(F2, b, c, d, a, md5->buffer[8] + 0x455a14ed, 20);
	MD5STEP(F2, a, b, c, d, md5->buffer[13] + 0xa9e3e905, 5);
	MD5STEP(F2, d, a, b, c, md5->buffer[2] + 0xfcefa3f8, 9);
	MD5STEP(F2, c, d, a, b, md5->buffer[7] + 0x676f02d9, 14);
	MD5STEP(F2, b, c, d, a, md5->buffer[12] + 0x8d2a4c8a, 20);

	MD5STEP(F3, a, b, c, d, md5->buffer[5] + 0xfffa3942, 4);
	MD5STEP(F3, d, a, b, c, md5->buffer[8] + 0x8771f681, 11);
	MD5STEP(F3, c, d, a, b, md5->buffer[11] + 0x6d9d6122, 16);
	MD5STEP(F3, b, c, d, a, md5->buffer[14] + 0xfde5380c, 23);
	MD5STEP(F3, a, b, c, d, md5->buffer[1] + 0xa4beea44, 4);
	MD5STEP(F3, d, a, b, c, md5->buffer[4] + 0x4bdecfa9, 11);
	MD5STEP(F3, c, d, a, b, md5->buffer[7] + 0xf6bb4b60, 16);
	MD5STEP(F3, b, c, d, a, md5->buffer[10] + 0xbebfbc70, 23);
	MD5STEP(F3, a, b, c, d, md5->buffer[13] + 0x289b7ec6, 4);
	MD5STEP(F3, d, a, b, c, md5->buffer[0] + 0xeaa127fa, 11);
	MD5STEP(F3, c, d, a, b, md5->buffer[3] + 0xd4ef3085, 16);
	MD5STEP(F3, b, c, d, a, md5->buffer[6] + 0x04881d05, 23);
	MD5STEP(F3, a, b, c, d, md5->buffer[9] + 0xd9d4d039, 4);
	MD5STEP(F3, d, a, b, c, md5->buffer[12] + 0xe6db99e5, 11);
	MD5STEP(F3, c, d, a, b, md5->buffer[15] + 0x1fa27cf8, 16);
	MD5STEP(F3, b, c, d, a, md5->buffer[2] + 0xc4ac5665, 23);

	MD5STEP(F4, a, b, c, d, md5->buffer[0] + 0xf4292244, 6);
	MD5STEP(F4, d, a, b, c, md5->buffer[7] + 0x432aff97, 10);
	MD5STEP(F4, c, d, a, b, md5->buffer[14] + 0xab9423a7, 15);
	MD5STEP(F4, b, c, d, a, md5->buffer[5] + 0xfc93a039, 21);
	MD5STEP(F4, a, b, c, d, md5->buffer[12] + 0x655b59c3, 6);
	MD5STEP(F4, d, a, b, c, md5->buffer[3] + 0x8f0ccc92, 10);
	MD5STEP(F4, c, d, a, b, md5->buffer[10] + 0xffeff47d, 15);
	MD5STEP(F4, b, c, d, a, md5->buffer[1] + 0x85845dd1, 21);
	MD5STEP(F4, a, b, c, d, md5->buffer[8] + 0x6fa87e4f, 6);
	MD5STEP(F4, d, a, b, c, md5->buffer[15] + 0xfe2ce6e0, 10);
	MD5STEP(F4, c, d, a, b, md5->buffer[6] + 0xa3014314, 15);
	MD5STEP(F4, b, c, d, a, md5->buffer[13] + 0x4e0811a1, 21);
	MD5STEP(F4, a, b, c, d, md5->buffer[4] + 0xf7537e82, 6);
	MD5STEP(F4, d, a, b, c, md5->buffer[11] + 0xbd3af235, 10);
	MD5STEP(F4, c, d, a, b, md5->buffer[2] + 0x2ad7d2bb, 15);
	MD5STEP(F4, b, c, d, a, md5->buffer[9] + 0xeb86d391, 21);

	/* Add the working vars back into digest state[] */
	md5->digest[0] += a;
	md5->digest[1] += b;
	md5->digest[2] += c;
	md5->digest[3] += d;
	}

	#endif /* FREESCALE_MMCAU */


	static INLINE void AddLength(Md5* md5, word32 len)
	{
	word32 tmp = md5->loLen;
	if ( (md5->loLen += len) < tmp)
	md5->hiLen++; /* carry low to high */
	}


	void wc_Md5Update(Md5* md5, const byte* data, word32 len)
	{
	/* do block size increments */
	byte* local = (byte*)md5->buffer;

	while (len) {
	word32 add = min(len, MD5_BLOCK_SIZE - md5->buffLen);
	XMEMCPY(&local[md5->buffLen], data, add);

	md5->buffLen += add;
	data += add;
	len -= add;

	if (md5->buffLen == MD5_BLOCK_SIZE) {
	#if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
	ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
	#endif
	XTRANSFORM(md5, local);
	AddLength(md5, MD5_BLOCK_SIZE);
	md5->buffLen = 0;
	}
	}
	}


	void wc_Md5Final(Md5* md5, byte* hash)
	{
	byte* local = (byte*)md5->buffer;

	AddLength(md5, md5->buffLen); /* before adding pads */

	local[md5->buffLen++] = 0x80; /* add 1 */

	/* pad with zeros */
	if (md5->buffLen > MD5_PAD_SIZE) {
	XMEMSET(&local[md5->buffLen], 0, MD5_BLOCK_SIZE - md5->buffLen);
	md5->buffLen += MD5_BLOCK_SIZE - md5->buffLen;

	#if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
	ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
	#endif
	XTRANSFORM(md5, local);
	md5->buffLen = 0;
	}
	XMEMSET(&local[md5->buffLen], 0, MD5_PAD_SIZE - md5->buffLen);

	/* put lengths in bits */
	md5->hiLen = (md5->loLen >> (8*sizeof(md5->loLen) - 3)) +
	(md5->hiLen << 3);
	md5->loLen = md5->loLen << 3;

	/* store lengths */
	#if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
	ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
	#endif
	/* ! length ordering dependent on digest endian type ! */
	XMEMCPY(&local[MD5_PAD_SIZE], &md5->loLen, sizeof(word32));
	XMEMCPY(&local[MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32));

	XTRANSFORM(md5, local);
	#ifdef BIG_ENDIAN_ORDER
	ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
	#endif
	XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);

	wc_InitMd5(md5); /* reset state */
	}

	#endif /* STM32F2_HASH */


	int wc_Md5Hash(const byte* data, word32 len, byte* hash)
	{
	#ifdef WOLFSSL_SMALL_STACK
	Md5* md5;
	#else
	Md5 md5[1];
	#endif

	#ifdef WOLFSSL_SMALL_STACK
	md5 = (Md5*)XMALLOC(sizeof(Md5), NULL, DYNAMIC_TYPE_TMP_BUFFER);
	if (md5 == NULL)
	return MEMORY_E;
	#endif

	wc_InitMd5(md5);
	wc_Md5Update(md5, data, len);
	wc_Md5Final(md5, hash);

	#ifdef WOLFSSL_SMALL_STACK
	XFREE(md5, NULL, DYNAMIC_TYPE_TMP_BUFFER);
	#endif

	return 0;
	}

	#endif /* WOLFSSL_TI_HASH */

	#endif /* NO_MD5 */