Ivan Grokhotkov / hmac_md5

A simple CyaSSL-based HMAC-MD5 implementation. Licensed under GPL v2.

Dependents:   RFrec_full RFtrans_full

The output will be base64-encoded, with trailing "==", like this:

j62o/jZsAZD9i9m+32lIuQ==

Example

#include "mbed.h"
#include "hmac_md5.h"

Serial pc(USBTX, USBRX); // tx, rx

void main(void)
{
    
    const char * key = "MySecretKey";
    
    const char * text = "message to be signed";
    
    char output[26];
    
    HMAC_MD5(key, text, output);

    printf("result = %s\n", output);

    while(true){}
}

md5.c@0:83f3dcfa5c8f, 2013-02-06 (annotated)

Committer:
igrokhotkov
Date:
Wed Feb 06 20:35:03 2013 +0000
Revision:
0:83f3dcfa5c8f
initial revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
igrokhotkov 0:83f3dcfa5c8f 1 /* md5.c
igrokhotkov 0:83f3dcfa5c8f 2 *
igrokhotkov 0:83f3dcfa5c8f 3 * Copyright (C) 2006-2012 Sawtooth Consulting Ltd.
igrokhotkov 0:83f3dcfa5c8f 4 *
igrokhotkov 0:83f3dcfa5c8f 5 * This file is part of CyaSSL.
igrokhotkov 0:83f3dcfa5c8f 6 *
igrokhotkov 0:83f3dcfa5c8f 7 * CyaSSL is free software; you can redistribute it and/or modify
igrokhotkov 0:83f3dcfa5c8f 8 * it under the terms of the GNU General Public License as published by
igrokhotkov 0:83f3dcfa5c8f 9 * the Free Software Foundation; either version 2 of the License, or
igrokhotkov 0:83f3dcfa5c8f 10 * (at your option) any later version.
igrokhotkov 0:83f3dcfa5c8f 11 *
igrokhotkov 0:83f3dcfa5c8f 12 * CyaSSL is distributed in the hope that it will be useful,
igrokhotkov 0:83f3dcfa5c8f 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
igrokhotkov 0:83f3dcfa5c8f 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
igrokhotkov 0:83f3dcfa5c8f 15 * GNU General Public License for more details.
igrokhotkov 0:83f3dcfa5c8f 16 *
igrokhotkov 0:83f3dcfa5c8f 17 * You should have received a copy of the GNU General Public License
igrokhotkov 0:83f3dcfa5c8f 18 * along with this program; if not, write to the Free Software
igrokhotkov 0:83f3dcfa5c8f 19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
igrokhotkov 0:83f3dcfa5c8f 20 */
igrokhotkov 0:83f3dcfa5c8f 21
igrokhotkov 0:83f3dcfa5c8f 22
igrokhotkov 0:83f3dcfa5c8f 23 #ifdef HAVE_CONFIG_H
igrokhotkov 0:83f3dcfa5c8f 24 #include <config.h>
igrokhotkov 0:83f3dcfa5c8f 25 #endif
igrokhotkov 0:83f3dcfa5c8f 26
igrokhotkov 0:83f3dcfa5c8f 27 #include "md5.h"
igrokhotkov 0:83f3dcfa5c8f 28
igrokhotkov 0:83f3dcfa5c8f 29 #ifdef NO_INLINE
igrokhotkov 0:83f3dcfa5c8f 30 #include "misc.h"
igrokhotkov 0:83f3dcfa5c8f 31 #else
igrokhotkov 0:83f3dcfa5c8f 32 #include "misc.c"
igrokhotkov 0:83f3dcfa5c8f 33 #endif
igrokhotkov 0:83f3dcfa5c8f 34
igrokhotkov 0:83f3dcfa5c8f 35
igrokhotkov 0:83f3dcfa5c8f 36 #ifdef STM32F2_CRYPTO
igrokhotkov 0:83f3dcfa5c8f 37 /*
igrokhotkov 0:83f3dcfa5c8f 38 * STM32F2 hardware MD5 support through the STM32F2 standard peripheral
igrokhotkov 0:83f3dcfa5c8f 39 * library. Documentation located in STM32F2xx Standard Peripheral Library
igrokhotkov 0:83f3dcfa5c8f 40 * document (See note in README).
igrokhotkov 0:83f3dcfa5c8f 41 */
igrokhotkov 0:83f3dcfa5c8f 42 #include "stm32f2xx.h"
igrokhotkov 0:83f3dcfa5c8f 43
igrokhotkov 0:83f3dcfa5c8f 44 void InitMd5(Md5* md5)
igrokhotkov 0:83f3dcfa5c8f 45 {
igrokhotkov 0:83f3dcfa5c8f 46 /* STM32F2 struct notes:
igrokhotkov 0:83f3dcfa5c8f 47 * md5->buffer = first 4 bytes used to hold partial block if needed
igrokhotkov 0:83f3dcfa5c8f 48 * md5->buffLen = num bytes currently stored in md5->buffer
igrokhotkov 0:83f3dcfa5c8f 49 * md5->loLen = num bytes that have been written to STM32 FIFO
igrokhotkov 0:83f3dcfa5c8f 50 */
igrokhotkov 0:83f3dcfa5c8f 51 XMEMSET(md5->buffer, 0, MD5_REG_SIZE);
igrokhotkov 0:83f3dcfa5c8f 52 md5->buffLen = 0;
igrokhotkov 0:83f3dcfa5c8f 53 md5->loLen = 0;
igrokhotkov 0:83f3dcfa5c8f 54
igrokhotkov 0:83f3dcfa5c8f 55 /* initialize HASH peripheral */
igrokhotkov 0:83f3dcfa5c8f 56 HASH_DeInit();
igrokhotkov 0:83f3dcfa5c8f 57
igrokhotkov 0:83f3dcfa5c8f 58 /* configure algo used, algo mode, datatype */
igrokhotkov 0:83f3dcfa5c8f 59 HASH->CR &= ~ (HASH_CR_ALGO | HASH_CR_DATATYPE | HASH_CR_MODE);
igrokhotkov 0:83f3dcfa5c8f 60 HASH->CR |= (HASH_AlgoSelection_MD5 | HASH_AlgoMode_HASH
igrokhotkov 0:83f3dcfa5c8f 61 | HASH_DataType_8b);
igrokhotkov 0:83f3dcfa5c8f 62
igrokhotkov 0:83f3dcfa5c8f 63 /* reset HASH processor */
igrokhotkov 0:83f3dcfa5c8f 64 HASH->CR |= HASH_CR_INIT;
igrokhotkov 0:83f3dcfa5c8f 65 }
igrokhotkov 0:83f3dcfa5c8f 66
igrokhotkov 0:83f3dcfa5c8f 67 void Md5Update(Md5* md5, const byte* data, word32 len)
igrokhotkov 0:83f3dcfa5c8f 68 {
igrokhotkov 0:83f3dcfa5c8f 69 word32 i = 0;
igrokhotkov 0:83f3dcfa5c8f 70 word32 fill = 0;
igrokhotkov 0:83f3dcfa5c8f 71 word32 diff = 0;
igrokhotkov 0:83f3dcfa5c8f 72
igrokhotkov 0:83f3dcfa5c8f 73 /* if saved partial block is available */
igrokhotkov 0:83f3dcfa5c8f 74 if (md5->buffLen > 0) {
igrokhotkov 0:83f3dcfa5c8f 75 fill = 4 - md5->buffLen;
igrokhotkov 0:83f3dcfa5c8f 76
igrokhotkov 0:83f3dcfa5c8f 77 /* if enough data to fill, fill and push to FIFO */
igrokhotkov 0:83f3dcfa5c8f 78 if (fill <= len) {
igrokhotkov 0:83f3dcfa5c8f 79 XMEMCPY((byte*)md5->buffer + md5->buffLen, data, fill);
igrokhotkov 0:83f3dcfa5c8f 80 HASH_DataIn(*(uint32_t*)md5->buffer);
igrokhotkov 0:83f3dcfa5c8f 81
igrokhotkov 0:83f3dcfa5c8f 82 data += fill;
igrokhotkov 0:83f3dcfa5c8f 83 len -= fill;
igrokhotkov 0:83f3dcfa5c8f 84 md5->loLen += 4;
igrokhotkov 0:83f3dcfa5c8f 85 md5->buffLen = 0;
igrokhotkov 0:83f3dcfa5c8f 86 } else {
igrokhotkov 0:83f3dcfa5c8f 87 /* append partial to existing stored block */
igrokhotkov 0:83f3dcfa5c8f 88 XMEMCPY((byte*)md5->buffer + md5->buffLen, data, len);
igrokhotkov 0:83f3dcfa5c8f 89 md5->buffLen += len;
igrokhotkov 0:83f3dcfa5c8f 90 return;
igrokhotkov 0:83f3dcfa5c8f 91 }
igrokhotkov 0:83f3dcfa5c8f 92 }
igrokhotkov 0:83f3dcfa5c8f 93
igrokhotkov 0:83f3dcfa5c8f 94 /* write input block in the IN FIFO */
igrokhotkov 0:83f3dcfa5c8f 95 for (i = 0; i < len; i += 4)
igrokhotkov 0:83f3dcfa5c8f 96 {
igrokhotkov 0:83f3dcfa5c8f 97 diff = len - i;
igrokhotkov 0:83f3dcfa5c8f 98 if (diff < 4) {
igrokhotkov 0:83f3dcfa5c8f 99 /* store incomplete last block, not yet in FIFO */
igrokhotkov 0:83f3dcfa5c8f 100 XMEMSET(md5->buffer, 0, MD5_REG_SIZE);
igrokhotkov 0:83f3dcfa5c8f 101 XMEMCPY((byte*)md5->buffer, data, diff);
igrokhotkov 0:83f3dcfa5c8f 102 md5->buffLen = diff;
igrokhotkov 0:83f3dcfa5c8f 103 } else {
igrokhotkov 0:83f3dcfa5c8f 104 HASH_DataIn(*(uint32_t*)data);
igrokhotkov 0:83f3dcfa5c8f 105 data+=4;
igrokhotkov 0:83f3dcfa5c8f 106 }
igrokhotkov 0:83f3dcfa5c8f 107 }
igrokhotkov 0:83f3dcfa5c8f 108
igrokhotkov 0:83f3dcfa5c8f 109 /* keep track of total data length thus far */
igrokhotkov 0:83f3dcfa5c8f 110 md5->loLen += (len - md5->buffLen);
igrokhotkov 0:83f3dcfa5c8f 111 }
igrokhotkov 0:83f3dcfa5c8f 112
igrokhotkov 0:83f3dcfa5c8f 113 void Md5Final(Md5* md5, byte* hash)
igrokhotkov 0:83f3dcfa5c8f 114 {
igrokhotkov 0:83f3dcfa5c8f 115 __IO uint16_t nbvalidbitsdata = 0;
igrokhotkov 0:83f3dcfa5c8f 116
igrokhotkov 0:83f3dcfa5c8f 117 /* finish reading any trailing bytes into FIFO */
igrokhotkov 0:83f3dcfa5c8f 118 if (md5->buffLen > 0) {
igrokhotkov 0:83f3dcfa5c8f 119 HASH_DataIn(*(uint32_t*)md5->buffer);
igrokhotkov 0:83f3dcfa5c8f 120 md5->loLen += md5->buffLen;
igrokhotkov 0:83f3dcfa5c8f 121 }
igrokhotkov 0:83f3dcfa5c8f 122
igrokhotkov 0:83f3dcfa5c8f 123 /* calculate number of valid bits in last word of input data */
igrokhotkov 0:83f3dcfa5c8f 124 nbvalidbitsdata = 8 * (md5->loLen % MD5_REG_SIZE);
igrokhotkov 0:83f3dcfa5c8f 125
igrokhotkov 0:83f3dcfa5c8f 126 /* configure number of valid bits in last word of the data */
igrokhotkov 0:83f3dcfa5c8f 127 HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);
igrokhotkov 0:83f3dcfa5c8f 128
igrokhotkov 0:83f3dcfa5c8f 129 /* start HASH processor */
igrokhotkov 0:83f3dcfa5c8f 130 HASH_StartDigest();
igrokhotkov 0:83f3dcfa5c8f 131
igrokhotkov 0:83f3dcfa5c8f 132 /* wait until Busy flag == RESET */
igrokhotkov 0:83f3dcfa5c8f 133 while (HASH_GetFlagStatus(HASH_FLAG_BUSY) != RESET) {}
igrokhotkov 0:83f3dcfa5c8f 134
igrokhotkov 0:83f3dcfa5c8f 135 /* read message digest */
igrokhotkov 0:83f3dcfa5c8f 136 md5->digest[0] = HASH->HR[0];
igrokhotkov 0:83f3dcfa5c8f 137 md5->digest[1] = HASH->HR[1];
igrokhotkov 0:83f3dcfa5c8f 138 md5->digest[2] = HASH->HR[2];
igrokhotkov 0:83f3dcfa5c8f 139 md5->digest[3] = HASH->HR[3];
igrokhotkov 0:83f3dcfa5c8f 140
igrokhotkov 0:83f3dcfa5c8f 141 ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
igrokhotkov 0:83f3dcfa5c8f 142
igrokhotkov 0:83f3dcfa5c8f 143 XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);
igrokhotkov 0:83f3dcfa5c8f 144
igrokhotkov 0:83f3dcfa5c8f 145 InitMd5(md5); /* reset state */
igrokhotkov 0:83f3dcfa5c8f 146 }
igrokhotkov 0:83f3dcfa5c8f 147
igrokhotkov 0:83f3dcfa5c8f 148 #else /* CTaoCrypt software implementation */
igrokhotkov 0:83f3dcfa5c8f 149
igrokhotkov 0:83f3dcfa5c8f 150 #ifndef min
igrokhotkov 0:83f3dcfa5c8f 151
igrokhotkov 0:83f3dcfa5c8f 152 static INLINE word32 min(word32 a, word32 b)
igrokhotkov 0:83f3dcfa5c8f 153 {
igrokhotkov 0:83f3dcfa5c8f 154 return a > b ? b : a;
igrokhotkov 0:83f3dcfa5c8f 155 }
igrokhotkov 0:83f3dcfa5c8f 156
igrokhotkov 0:83f3dcfa5c8f 157 #endif /* min */
igrokhotkov 0:83f3dcfa5c8f 158
igrokhotkov 0:83f3dcfa5c8f 159
igrokhotkov 0:83f3dcfa5c8f 160 void InitMd5(Md5* md5)
igrokhotkov 0:83f3dcfa5c8f 161 {
igrokhotkov 0:83f3dcfa5c8f 162 md5->digest[0] = 0x67452301L;
igrokhotkov 0:83f3dcfa5c8f 163 md5->digest[1] = 0xefcdab89L;
igrokhotkov 0:83f3dcfa5c8f 164 md5->digest[2] = 0x98badcfeL;
igrokhotkov 0:83f3dcfa5c8f 165 md5->digest[3] = 0x10325476L;
igrokhotkov 0:83f3dcfa5c8f 166
igrokhotkov 0:83f3dcfa5c8f 167 md5->buffLen = 0;
igrokhotkov 0:83f3dcfa5c8f 168 md5->loLen = 0;
igrokhotkov 0:83f3dcfa5c8f 169 md5->hiLen = 0;
igrokhotkov 0:83f3dcfa5c8f 170 }
igrokhotkov 0:83f3dcfa5c8f 171
igrokhotkov 0:83f3dcfa5c8f 172
igrokhotkov 0:83f3dcfa5c8f 173 static void Transform(Md5* md5)
igrokhotkov 0:83f3dcfa5c8f 174 {
igrokhotkov 0:83f3dcfa5c8f 175 #define F1(x, y, z) (z ^ (x & (y ^ z)))
igrokhotkov 0:83f3dcfa5c8f 176 #define F2(x, y, z) F1(z, x, y)
igrokhotkov 0:83f3dcfa5c8f 177 #define F3(x, y, z) (x ^ y ^ z)
igrokhotkov 0:83f3dcfa5c8f 178 #define F4(x, y, z) (y ^ (x | ~z))
igrokhotkov 0:83f3dcfa5c8f 179
igrokhotkov 0:83f3dcfa5c8f 180 #define MD5STEP(f, w, x, y, z, data, s) \
igrokhotkov 0:83f3dcfa5c8f 181 w = rotlFixed(w + f(x, y, z) + data, s) + x
igrokhotkov 0:83f3dcfa5c8f 182
igrokhotkov 0:83f3dcfa5c8f 183 /* Copy context->state[] to working vars */
igrokhotkov 0:83f3dcfa5c8f 184 word32 a = md5->digest[0];
igrokhotkov 0:83f3dcfa5c8f 185 word32 b = md5->digest[1];
igrokhotkov 0:83f3dcfa5c8f 186 word32 c = md5->digest[2];
igrokhotkov 0:83f3dcfa5c8f 187 word32 d = md5->digest[3];
igrokhotkov 0:83f3dcfa5c8f 188
igrokhotkov 0:83f3dcfa5c8f 189 MD5STEP(F1, a, b, c, d, md5->buffer[0] + 0xd76aa478, 7);
igrokhotkov 0:83f3dcfa5c8f 190 MD5STEP(F1, d, a, b, c, md5->buffer[1] + 0xe8c7b756, 12);
igrokhotkov 0:83f3dcfa5c8f 191 MD5STEP(F1, c, d, a, b, md5->buffer[2] + 0x242070db, 17);
igrokhotkov 0:83f3dcfa5c8f 192 MD5STEP(F1, b, c, d, a, md5->buffer[3] + 0xc1bdceee, 22);
igrokhotkov 0:83f3dcfa5c8f 193 MD5STEP(F1, a, b, c, d, md5->buffer[4] + 0xf57c0faf, 7);
igrokhotkov 0:83f3dcfa5c8f 194 MD5STEP(F1, d, a, b, c, md5->buffer[5] + 0x4787c62a, 12);
igrokhotkov 0:83f3dcfa5c8f 195 MD5STEP(F1, c, d, a, b, md5->buffer[6] + 0xa8304613, 17);
igrokhotkov 0:83f3dcfa5c8f 196 MD5STEP(F1, b, c, d, a, md5->buffer[7] + 0xfd469501, 22);
igrokhotkov 0:83f3dcfa5c8f 197 MD5STEP(F1, a, b, c, d, md5->buffer[8] + 0x698098d8, 7);
igrokhotkov 0:83f3dcfa5c8f 198 MD5STEP(F1, d, a, b, c, md5->buffer[9] + 0x8b44f7af, 12);
igrokhotkov 0:83f3dcfa5c8f 199 MD5STEP(F1, c, d, a, b, md5->buffer[10] + 0xffff5bb1, 17);
igrokhotkov 0:83f3dcfa5c8f 200 MD5STEP(F1, b, c, d, a, md5->buffer[11] + 0x895cd7be, 22);
igrokhotkov 0:83f3dcfa5c8f 201 MD5STEP(F1, a, b, c, d, md5->buffer[12] + 0x6b901122, 7);
igrokhotkov 0:83f3dcfa5c8f 202 MD5STEP(F1, d, a, b, c, md5->buffer[13] + 0xfd987193, 12);
igrokhotkov 0:83f3dcfa5c8f 203 MD5STEP(F1, c, d, a, b, md5->buffer[14] + 0xa679438e, 17);
igrokhotkov 0:83f3dcfa5c8f 204 MD5STEP(F1, b, c, d, a, md5->buffer[15] + 0x49b40821, 22);
igrokhotkov 0:83f3dcfa5c8f 205
igrokhotkov 0:83f3dcfa5c8f 206 MD5STEP(F2, a, b, c, d, md5->buffer[1] + 0xf61e2562, 5);
igrokhotkov 0:83f3dcfa5c8f 207 MD5STEP(F2, d, a, b, c, md5->buffer[6] + 0xc040b340, 9);
igrokhotkov 0:83f3dcfa5c8f 208 MD5STEP(F2, c, d, a, b, md5->buffer[11] + 0x265e5a51, 14);
igrokhotkov 0:83f3dcfa5c8f 209 MD5STEP(F2, b, c, d, a, md5->buffer[0] + 0xe9b6c7aa, 20);
igrokhotkov 0:83f3dcfa5c8f 210 MD5STEP(F2, a, b, c, d, md5->buffer[5] + 0xd62f105d, 5);
igrokhotkov 0:83f3dcfa5c8f 211 MD5STEP(F2, d, a, b, c, md5->buffer[10] + 0x02441453, 9);
igrokhotkov 0:83f3dcfa5c8f 212 MD5STEP(F2, c, d, a, b, md5->buffer[15] + 0xd8a1e681, 14);
igrokhotkov 0:83f3dcfa5c8f 213 MD5STEP(F2, b, c, d, a, md5->buffer[4] + 0xe7d3fbc8, 20);
igrokhotkov 0:83f3dcfa5c8f 214 MD5STEP(F2, a, b, c, d, md5->buffer[9] + 0x21e1cde6, 5);
igrokhotkov 0:83f3dcfa5c8f 215 MD5STEP(F2, d, a, b, c, md5->buffer[14] + 0xc33707d6, 9);
igrokhotkov 0:83f3dcfa5c8f 216 MD5STEP(F2, c, d, a, b, md5->buffer[3] + 0xf4d50d87, 14);
igrokhotkov 0:83f3dcfa5c8f 217 MD5STEP(F2, b, c, d, a, md5->buffer[8] + 0x455a14ed, 20);
igrokhotkov 0:83f3dcfa5c8f 218 MD5STEP(F2, a, b, c, d, md5->buffer[13] + 0xa9e3e905, 5);
igrokhotkov 0:83f3dcfa5c8f 219 MD5STEP(F2, d, a, b, c, md5->buffer[2] + 0xfcefa3f8, 9);
igrokhotkov 0:83f3dcfa5c8f 220 MD5STEP(F2, c, d, a, b, md5->buffer[7] + 0x676f02d9, 14);
igrokhotkov 0:83f3dcfa5c8f 221 MD5STEP(F2, b, c, d, a, md5->buffer[12] + 0x8d2a4c8a, 20);
igrokhotkov 0:83f3dcfa5c8f 222
igrokhotkov 0:83f3dcfa5c8f 223 MD5STEP(F3, a, b, c, d, md5->buffer[5] + 0xfffa3942, 4);
igrokhotkov 0:83f3dcfa5c8f 224 MD5STEP(F3, d, a, b, c, md5->buffer[8] + 0x8771f681, 11);
igrokhotkov 0:83f3dcfa5c8f 225 MD5STEP(F3, c, d, a, b, md5->buffer[11] + 0x6d9d6122, 16);
igrokhotkov 0:83f3dcfa5c8f 226 MD5STEP(F3, b, c, d, a, md5->buffer[14] + 0xfde5380c, 23);
igrokhotkov 0:83f3dcfa5c8f 227 MD5STEP(F3, a, b, c, d, md5->buffer[1] + 0xa4beea44, 4);
igrokhotkov 0:83f3dcfa5c8f 228 MD5STEP(F3, d, a, b, c, md5->buffer[4] + 0x4bdecfa9, 11);
igrokhotkov 0:83f3dcfa5c8f 229 MD5STEP(F3, c, d, a, b, md5->buffer[7] + 0xf6bb4b60, 16);
igrokhotkov 0:83f3dcfa5c8f 230 MD5STEP(F3, b, c, d, a, md5->buffer[10] + 0xbebfbc70, 23);
igrokhotkov 0:83f3dcfa5c8f 231 MD5STEP(F3, a, b, c, d, md5->buffer[13] + 0x289b7ec6, 4);
igrokhotkov 0:83f3dcfa5c8f 232 MD5STEP(F3, d, a, b, c, md5->buffer[0] + 0xeaa127fa, 11);
igrokhotkov 0:83f3dcfa5c8f 233 MD5STEP(F3, c, d, a, b, md5->buffer[3] + 0xd4ef3085, 16);
igrokhotkov 0:83f3dcfa5c8f 234 MD5STEP(F3, b, c, d, a, md5->buffer[6] + 0x04881d05, 23);
igrokhotkov 0:83f3dcfa5c8f 235 MD5STEP(F3, a, b, c, d, md5->buffer[9] + 0xd9d4d039, 4);
igrokhotkov 0:83f3dcfa5c8f 236 MD5STEP(F3, d, a, b, c, md5->buffer[12] + 0xe6db99e5, 11);
igrokhotkov 0:83f3dcfa5c8f 237 MD5STEP(F3, c, d, a, b, md5->buffer[15] + 0x1fa27cf8, 16);
igrokhotkov 0:83f3dcfa5c8f 238 MD5STEP(F3, b, c, d, a, md5->buffer[2] + 0xc4ac5665, 23);
igrokhotkov 0:83f3dcfa5c8f 239
igrokhotkov 0:83f3dcfa5c8f 240 MD5STEP(F4, a, b, c, d, md5->buffer[0] + 0xf4292244, 6);
igrokhotkov 0:83f3dcfa5c8f 241 MD5STEP(F4, d, a, b, c, md5->buffer[7] + 0x432aff97, 10);
igrokhotkov 0:83f3dcfa5c8f 242 MD5STEP(F4, c, d, a, b, md5->buffer[14] + 0xab9423a7, 15);
igrokhotkov 0:83f3dcfa5c8f 243 MD5STEP(F4, b, c, d, a, md5->buffer[5] + 0xfc93a039, 21);
igrokhotkov 0:83f3dcfa5c8f 244 MD5STEP(F4, a, b, c, d, md5->buffer[12] + 0x655b59c3, 6);
igrokhotkov 0:83f3dcfa5c8f 245 MD5STEP(F4, d, a, b, c, md5->buffer[3] + 0x8f0ccc92, 10);
igrokhotkov 0:83f3dcfa5c8f 246 MD5STEP(F4, c, d, a, b, md5->buffer[10] + 0xffeff47d, 15);
igrokhotkov 0:83f3dcfa5c8f 247 MD5STEP(F4, b, c, d, a, md5->buffer[1] + 0x85845dd1, 21);
igrokhotkov 0:83f3dcfa5c8f 248 MD5STEP(F4, a, b, c, d, md5->buffer[8] + 0x6fa87e4f, 6);
igrokhotkov 0:83f3dcfa5c8f 249 MD5STEP(F4, d, a, b, c, md5->buffer[15] + 0xfe2ce6e0, 10);
igrokhotkov 0:83f3dcfa5c8f 250 MD5STEP(F4, c, d, a, b, md5->buffer[6] + 0xa3014314, 15);
igrokhotkov 0:83f3dcfa5c8f 251 MD5STEP(F4, b, c, d, a, md5->buffer[13] + 0x4e0811a1, 21);
igrokhotkov 0:83f3dcfa5c8f 252 MD5STEP(F4, a, b, c, d, md5->buffer[4] + 0xf7537e82, 6);
igrokhotkov 0:83f3dcfa5c8f 253 MD5STEP(F4, d, a, b, c, md5->buffer[11] + 0xbd3af235, 10);
igrokhotkov 0:83f3dcfa5c8f 254 MD5STEP(F4, c, d, a, b, md5->buffer[2] + 0x2ad7d2bb, 15);
igrokhotkov 0:83f3dcfa5c8f 255 MD5STEP(F4, b, c, d, a, md5->buffer[9] + 0xeb86d391, 21);
igrokhotkov 0:83f3dcfa5c8f 256
igrokhotkov 0:83f3dcfa5c8f 257 /* Add the working vars back into digest state[] */
igrokhotkov 0:83f3dcfa5c8f 258 md5->digest[0] += a;
igrokhotkov 0:83f3dcfa5c8f 259 md5->digest[1] += b;
igrokhotkov 0:83f3dcfa5c8f 260 md5->digest[2] += c;
igrokhotkov 0:83f3dcfa5c8f 261 md5->digest[3] += d;
igrokhotkov 0:83f3dcfa5c8f 262 }
igrokhotkov 0:83f3dcfa5c8f 263
igrokhotkov 0:83f3dcfa5c8f 264
igrokhotkov 0:83f3dcfa5c8f 265 static INLINE void AddLength(Md5* md5, word32 len)
igrokhotkov 0:83f3dcfa5c8f 266 {
igrokhotkov 0:83f3dcfa5c8f 267 word32 tmp = md5->loLen;
igrokhotkov 0:83f3dcfa5c8f 268 if ( (md5->loLen += len) < tmp)
igrokhotkov 0:83f3dcfa5c8f 269 md5->hiLen++; /* carry low to high */
igrokhotkov 0:83f3dcfa5c8f 270 }
igrokhotkov 0:83f3dcfa5c8f 271
igrokhotkov 0:83f3dcfa5c8f 272
igrokhotkov 0:83f3dcfa5c8f 273 void Md5Update(Md5* md5, const byte* data, word32 len)
igrokhotkov 0:83f3dcfa5c8f 274 {
igrokhotkov 0:83f3dcfa5c8f 275 /* do block size increments */
igrokhotkov 0:83f3dcfa5c8f 276 byte* local = (byte*)md5->buffer;
igrokhotkov 0:83f3dcfa5c8f 277
igrokhotkov 0:83f3dcfa5c8f 278 while (len) {
igrokhotkov 0:83f3dcfa5c8f 279 word32 add = min(len, MD5_BLOCK_SIZE - md5->buffLen);
igrokhotkov 0:83f3dcfa5c8f 280 XMEMCPY(&local[md5->buffLen], data, add);
igrokhotkov 0:83f3dcfa5c8f 281
igrokhotkov 0:83f3dcfa5c8f 282 md5->buffLen += add;
igrokhotkov 0:83f3dcfa5c8f 283 data += add;
igrokhotkov 0:83f3dcfa5c8f 284 len -= add;
igrokhotkov 0:83f3dcfa5c8f 285
igrokhotkov 0:83f3dcfa5c8f 286 if (md5->buffLen == MD5_BLOCK_SIZE) {
igrokhotkov 0:83f3dcfa5c8f 287 #ifdef BIG_ENDIAN_ORDER
igrokhotkov 0:83f3dcfa5c8f 288 ByteReverseBytes(local, local, MD5_BLOCK_SIZE);
igrokhotkov 0:83f3dcfa5c8f 289 #endif
igrokhotkov 0:83f3dcfa5c8f 290 Transform(md5);
igrokhotkov 0:83f3dcfa5c8f 291 AddLength(md5, MD5_BLOCK_SIZE);
igrokhotkov 0:83f3dcfa5c8f 292 md5->buffLen = 0;
igrokhotkov 0:83f3dcfa5c8f 293 }
igrokhotkov 0:83f3dcfa5c8f 294 }
igrokhotkov 0:83f3dcfa5c8f 295 }
igrokhotkov 0:83f3dcfa5c8f 296
igrokhotkov 0:83f3dcfa5c8f 297
igrokhotkov 0:83f3dcfa5c8f 298 void Md5Final(Md5* md5, byte* hash)
igrokhotkov 0:83f3dcfa5c8f 299 {
igrokhotkov 0:83f3dcfa5c8f 300 byte* local = (byte*)md5->buffer;
igrokhotkov 0:83f3dcfa5c8f 301
igrokhotkov 0:83f3dcfa5c8f 302 AddLength(md5, md5->buffLen); /* before adding pads */
igrokhotkov 0:83f3dcfa5c8f 303
igrokhotkov 0:83f3dcfa5c8f 304 local[md5->buffLen++] = 0x80; /* add 1 */
igrokhotkov 0:83f3dcfa5c8f 305
igrokhotkov 0:83f3dcfa5c8f 306 /* pad with zeros */
igrokhotkov 0:83f3dcfa5c8f 307 if (md5->buffLen > MD5_PAD_SIZE) {
igrokhotkov 0:83f3dcfa5c8f 308 XMEMSET(&local[md5->buffLen], 0, MD5_BLOCK_SIZE - md5->buffLen);
igrokhotkov 0:83f3dcfa5c8f 309 md5->buffLen += MD5_BLOCK_SIZE - md5->buffLen;
igrokhotkov 0:83f3dcfa5c8f 310
igrokhotkov 0:83f3dcfa5c8f 311 #ifdef BIG_ENDIAN_ORDER
igrokhotkov 0:83f3dcfa5c8f 312 ByteReverseBytes(local, local, MD5_BLOCK_SIZE);
igrokhotkov 0:83f3dcfa5c8f 313 #endif
igrokhotkov 0:83f3dcfa5c8f 314 Transform(md5);
igrokhotkov 0:83f3dcfa5c8f 315 md5->buffLen = 0;
igrokhotkov 0:83f3dcfa5c8f 316 }
igrokhotkov 0:83f3dcfa5c8f 317 XMEMSET(&local[md5->buffLen], 0, MD5_PAD_SIZE - md5->buffLen);
igrokhotkov 0:83f3dcfa5c8f 318
igrokhotkov 0:83f3dcfa5c8f 319 /* put lengths in bits */
igrokhotkov 0:83f3dcfa5c8f 320 md5->hiLen = (md5->loLen >> (8*sizeof(md5->loLen) - 3)) +
igrokhotkov 0:83f3dcfa5c8f 321 (md5->hiLen << 3);
igrokhotkov 0:83f3dcfa5c8f 322 md5->loLen = md5->loLen << 3;
igrokhotkov 0:83f3dcfa5c8f 323
igrokhotkov 0:83f3dcfa5c8f 324 /* store lengths */
igrokhotkov 0:83f3dcfa5c8f 325 #ifdef BIG_ENDIAN_ORDER
igrokhotkov 0:83f3dcfa5c8f 326 ByteReverseBytes(local, local, MD5_BLOCK_SIZE);
igrokhotkov 0:83f3dcfa5c8f 327 #endif
igrokhotkov 0:83f3dcfa5c8f 328 /* ! length ordering dependent on digest endian type ! */
igrokhotkov 0:83f3dcfa5c8f 329 XMEMCPY(&local[MD5_PAD_SIZE], &md5->loLen, sizeof(word32));
igrokhotkov 0:83f3dcfa5c8f 330 XMEMCPY(&local[MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32));
igrokhotkov 0:83f3dcfa5c8f 331
igrokhotkov 0:83f3dcfa5c8f 332 Transform(md5);
igrokhotkov 0:83f3dcfa5c8f 333 #ifdef BIG_ENDIAN_ORDER
igrokhotkov 0:83f3dcfa5c8f 334 ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
igrokhotkov 0:83f3dcfa5c8f 335 #endif
igrokhotkov 0:83f3dcfa5c8f 336 XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);
igrokhotkov 0:83f3dcfa5c8f 337
igrokhotkov 0:83f3dcfa5c8f 338 InitMd5(md5); /* reset state */
igrokhotkov 0:83f3dcfa5c8f 339 }
igrokhotkov 0:83f3dcfa5c8f 340
igrokhotkov 0:83f3dcfa5c8f 341 #endif /* STM32F2_CRYPTO */
igrokhotkov 0:83f3dcfa5c8f 342