1 | /* md5.c
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2 | *
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3 | * Copyright (C) 2006-2015 wolfSSL Inc.
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4 | *
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5 | * This file is part of wolfSSL. (formerly known as CyaSSL)
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6 | *
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7 | * wolfSSL is free software; you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation; either version 2 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * wolfSSL is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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20 | */
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21 |
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22 |
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23 | #ifdef HAVE_CONFIG_H
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24 | #include <config.h>
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25 | #endif
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26 |
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27 | #include <wolfssl/wolfcrypt/settings.h>
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28 |
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29 | #if !defined(NO_MD5)
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30 |
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31 | #if defined(WOLFSSL_TI_HASH)
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32 | /* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
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33 | #else
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34 |
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35 | #ifdef WOLFSSL_PIC32MZ_HASH
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36 | #define wc_InitMd5 wc_InitMd5_sw
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37 | #define wc_Md5Update wc_Md5Update_sw
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38 | #define wc_Md5Final wc_Md5Final_sw
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39 | #endif
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40 |
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41 | #include <wolfssl/wolfcrypt/md5.h>
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42 | #include <wolfssl/wolfcrypt/error-crypt.h>
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43 |
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44 | #ifdef NO_INLINE
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45 | #include <wolfssl/wolfcrypt/misc.h>
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46 | #else
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47 | #include <wolfcrypt/src/misc.c>
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48 | #endif
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49 |
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50 | #ifdef FREESCALE_MMCAU
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51 | #include "cau_api.h"
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52 | #define XTRANSFORM(S,B) Transform((S), (B))
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53 | #else
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54 | #define XTRANSFORM(S,B) Transform((S))
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55 | #endif
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56 |
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57 |
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58 | #ifdef STM32F2_HASH
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59 | /*
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60 | * STM32F2 hardware MD5 support through the STM32F2 standard peripheral
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61 | * library. Documentation located in STM32F2xx Standard Peripheral Library
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62 | * document (See note in README).
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63 | */
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64 | #include "stm32f2xx.h"
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65 |
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66 | void wc_InitMd5(Md5* md5)
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67 | {
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68 | /* STM32F2 struct notes:
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69 | * md5->buffer = first 4 bytes used to hold partial block if needed
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70 | * md5->buffLen = num bytes currently stored in md5->buffer
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71 | * md5->loLen = num bytes that have been written to STM32 FIFO
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72 | */
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73 | XMEMSET(md5->buffer, 0, MD5_REG_SIZE);
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74 |
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75 | md5->buffLen = 0;
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76 | md5->loLen = 0;
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77 |
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78 | /* initialize HASH peripheral */
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79 | HASH_DeInit();
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80 |
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81 | /* configure algo used, algo mode, datatype */
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82 | HASH->CR &= ~ (HASH_CR_ALGO | HASH_CR_DATATYPE | HASH_CR_MODE);
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83 | HASH->CR |= (HASH_AlgoSelection_MD5 | HASH_AlgoMode_HASH
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84 | | HASH_DataType_8b);
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85 |
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86 | /* reset HASH processor */
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87 | HASH->CR |= HASH_CR_INIT;
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88 | }
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89 |
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90 | void wc_Md5Update(Md5* md5, const byte* data, word32 len)
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91 | {
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92 | word32 i = 0;
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93 | word32 fill = 0;
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94 | word32 diff = 0;
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95 |
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96 | /* if saved partial block is available */
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97 | if (md5->buffLen > 0) {
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98 | fill = 4 - md5->buffLen;
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99 |
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100 | /* if enough data to fill, fill and push to FIFO */
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101 | if (fill <= len) {
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102 | XMEMCPY((byte*)md5->buffer + md5->buffLen, data, fill);
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103 | HASH_DataIn(*(uint32_t*)md5->buffer);
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104 |
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105 | data += fill;
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106 | len -= fill;
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107 | md5->loLen += 4;
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108 | md5->buffLen = 0;
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109 | } else {
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110 | /* append partial to existing stored block */
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111 | XMEMCPY((byte*)md5->buffer + md5->buffLen, data, len);
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112 | md5->buffLen += len;
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113 | return;
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114 | }
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115 | }
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116 |
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117 | /* write input block in the IN FIFO */
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118 | for (i = 0; i < len; i += 4)
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119 | {
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120 | diff = len - i;
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121 | if (diff < 4) {
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122 | /* store incomplete last block, not yet in FIFO */
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123 | XMEMSET(md5->buffer, 0, MD5_REG_SIZE);
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124 | XMEMCPY((byte*)md5->buffer, data, diff);
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125 | md5->buffLen = diff;
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126 | } else {
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127 | HASH_DataIn(*(uint32_t*)data);
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128 | data+=4;
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129 | }
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130 | }
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131 |
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132 | /* keep track of total data length thus far */
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133 | md5->loLen += (len - md5->buffLen);
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134 | }
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135 |
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136 | void wc_Md5Final(Md5* md5, byte* hash)
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137 | {
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138 | __IO uint16_t nbvalidbitsdata = 0;
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139 |
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140 | /* finish reading any trailing bytes into FIFO */
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141 | if (md5->buffLen > 0) {
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142 | HASH_DataIn(*(uint32_t*)md5->buffer);
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143 | md5->loLen += md5->buffLen;
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144 | }
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145 |
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146 | /* calculate number of valid bits in last word of input data */
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147 | nbvalidbitsdata = 8 * (md5->loLen % MD5_REG_SIZE);
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148 |
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149 | /* configure number of valid bits in last word of the data */
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150 | HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);
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151 |
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152 | /* start HASH processor */
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153 | HASH_StartDigest();
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154 |
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155 | /* wait until Busy flag == RESET */
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156 | while (HASH_GetFlagStatus(HASH_FLAG_BUSY) != RESET) {}
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157 |
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158 | /* read message digest */
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159 | md5->digest[0] = HASH->HR[0];
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160 | md5->digest[1] = HASH->HR[1];
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161 | md5->digest[2] = HASH->HR[2];
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162 | md5->digest[3] = HASH->HR[3];
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163 |
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164 | ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
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165 |
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166 | XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);
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167 |
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168 | wc_InitMd5(md5); /* reset state */
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169 | }
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170 |
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171 | #else /* CTaoCrypt software implementation */
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172 |
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173 | #ifdef min
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174 | #define WOLFSSL_HAVE_MIN
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175 | #endif
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176 | #ifndef WOLFSSL_HAVE_MIN
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177 | #define WOLFSSL_HAVE_MIN
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178 |
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179 | static INLINE word32 min(word32 a, word32 b)
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180 | {
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181 | return a > b ? b : a;
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182 | }
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183 |
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184 | #endif /* WOLFSSL_HAVE_MIN */
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185 |
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186 | void wc_InitMd5(Md5* md5)
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187 | {
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188 | md5->digest[0] = 0x67452301L;
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189 | md5->digest[1] = 0xefcdab89L;
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190 | md5->digest[2] = 0x98badcfeL;
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191 | md5->digest[3] = 0x10325476L;
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192 |
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193 | md5->buffLen = 0;
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194 | md5->loLen = 0;
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195 | md5->hiLen = 0;
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196 | }
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197 |
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198 | #ifdef FREESCALE_MMCAU
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199 | static int Transform(Md5* md5, byte* data)
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200 | {
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201 | int ret = wolfSSL_CryptHwMutexLock();
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202 | if(ret == 0) {
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203 | cau_md5_hash_n(data, 1, (unsigned char*)md5->digest);
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204 | wolfSSL_CryptHwMutexUnLock();
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205 | }
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206 | return ret;
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207 | }
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208 | #endif /* FREESCALE_MMCAU */
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209 |
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210 | #ifndef FREESCALE_MMCAU
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211 |
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212 | static void Transform(Md5* md5)
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213 | {
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214 | #define F1(x, y, z) (z ^ (x & (y ^ z)))
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215 | #define F2(x, y, z) F1(z, x, y)
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216 | #define F3(x, y, z) (x ^ y ^ z)
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217 | #define F4(x, y, z) (y ^ (x | ~z))
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218 |
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219 | #define MD5STEP(f, w, x, y, z, data, s) \
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220 | w = rotlFixed(w + f(x, y, z) + data, s) + x
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221 |
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222 | /* Copy context->state[] to working vars */
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223 | word32 a = md5->digest[0];
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224 | word32 b = md5->digest[1];
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225 | word32 c = md5->digest[2];
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226 | word32 d = md5->digest[3];
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227 |
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228 | MD5STEP(F1, a, b, c, d, md5->buffer[0] + 0xd76aa478, 7);
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229 | MD5STEP(F1, d, a, b, c, md5->buffer[1] + 0xe8c7b756, 12);
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230 | MD5STEP(F1, c, d, a, b, md5->buffer[2] + 0x242070db, 17);
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231 | MD5STEP(F1, b, c, d, a, md5->buffer[3] + 0xc1bdceee, 22);
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232 | MD5STEP(F1, a, b, c, d, md5->buffer[4] + 0xf57c0faf, 7);
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233 | MD5STEP(F1, d, a, b, c, md5->buffer[5] + 0x4787c62a, 12);
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234 | MD5STEP(F1, c, d, a, b, md5->buffer[6] + 0xa8304613, 17);
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235 | MD5STEP(F1, b, c, d, a, md5->buffer[7] + 0xfd469501, 22);
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236 | MD5STEP(F1, a, b, c, d, md5->buffer[8] + 0x698098d8, 7);
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237 | MD5STEP(F1, d, a, b, c, md5->buffer[9] + 0x8b44f7af, 12);
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238 | MD5STEP(F1, c, d, a, b, md5->buffer[10] + 0xffff5bb1, 17);
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239 | MD5STEP(F1, b, c, d, a, md5->buffer[11] + 0x895cd7be, 22);
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240 | MD5STEP(F1, a, b, c, d, md5->buffer[12] + 0x6b901122, 7);
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241 | MD5STEP(F1, d, a, b, c, md5->buffer[13] + 0xfd987193, 12);
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242 | MD5STEP(F1, c, d, a, b, md5->buffer[14] + 0xa679438e, 17);
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243 | MD5STEP(F1, b, c, d, a, md5->buffer[15] + 0x49b40821, 22);
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244 |
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245 | MD5STEP(F2, a, b, c, d, md5->buffer[1] + 0xf61e2562, 5);
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246 | MD5STEP(F2, d, a, b, c, md5->buffer[6] + 0xc040b340, 9);
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247 | MD5STEP(F2, c, d, a, b, md5->buffer[11] + 0x265e5a51, 14);
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248 | MD5STEP(F2, b, c, d, a, md5->buffer[0] + 0xe9b6c7aa, 20);
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249 | MD5STEP(F2, a, b, c, d, md5->buffer[5] + 0xd62f105d, 5);
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250 | MD5STEP(F2, d, a, b, c, md5->buffer[10] + 0x02441453, 9);
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251 | MD5STEP(F2, c, d, a, b, md5->buffer[15] + 0xd8a1e681, 14);
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252 | MD5STEP(F2, b, c, d, a, md5->buffer[4] + 0xe7d3fbc8, 20);
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253 | MD5STEP(F2, a, b, c, d, md5->buffer[9] + 0x21e1cde6, 5);
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254 | MD5STEP(F2, d, a, b, c, md5->buffer[14] + 0xc33707d6, 9);
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255 | MD5STEP(F2, c, d, a, b, md5->buffer[3] + 0xf4d50d87, 14);
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256 | MD5STEP(F2, b, c, d, a, md5->buffer[8] + 0x455a14ed, 20);
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257 | MD5STEP(F2, a, b, c, d, md5->buffer[13] + 0xa9e3e905, 5);
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258 | MD5STEP(F2, d, a, b, c, md5->buffer[2] + 0xfcefa3f8, 9);
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259 | MD5STEP(F2, c, d, a, b, md5->buffer[7] + 0x676f02d9, 14);
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260 | MD5STEP(F2, b, c, d, a, md5->buffer[12] + 0x8d2a4c8a, 20);
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261 |
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262 | MD5STEP(F3, a, b, c, d, md5->buffer[5] + 0xfffa3942, 4);
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263 | MD5STEP(F3, d, a, b, c, md5->buffer[8] + 0x8771f681, 11);
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264 | MD5STEP(F3, c, d, a, b, md5->buffer[11] + 0x6d9d6122, 16);
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265 | MD5STEP(F3, b, c, d, a, md5->buffer[14] + 0xfde5380c, 23);
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266 | MD5STEP(F3, a, b, c, d, md5->buffer[1] + 0xa4beea44, 4);
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267 | MD5STEP(F3, d, a, b, c, md5->buffer[4] + 0x4bdecfa9, 11);
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268 | MD5STEP(F3, c, d, a, b, md5->buffer[7] + 0xf6bb4b60, 16);
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269 | MD5STEP(F3, b, c, d, a, md5->buffer[10] + 0xbebfbc70, 23);
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270 | MD5STEP(F3, a, b, c, d, md5->buffer[13] + 0x289b7ec6, 4);
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271 | MD5STEP(F3, d, a, b, c, md5->buffer[0] + 0xeaa127fa, 11);
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272 | MD5STEP(F3, c, d, a, b, md5->buffer[3] + 0xd4ef3085, 16);
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273 | MD5STEP(F3, b, c, d, a, md5->buffer[6] + 0x04881d05, 23);
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274 | MD5STEP(F3, a, b, c, d, md5->buffer[9] + 0xd9d4d039, 4);
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275 | MD5STEP(F3, d, a, b, c, md5->buffer[12] + 0xe6db99e5, 11);
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276 | MD5STEP(F3, c, d, a, b, md5->buffer[15] + 0x1fa27cf8, 16);
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277 | MD5STEP(F3, b, c, d, a, md5->buffer[2] + 0xc4ac5665, 23);
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278 |
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279 | MD5STEP(F4, a, b, c, d, md5->buffer[0] + 0xf4292244, 6);
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280 | MD5STEP(F4, d, a, b, c, md5->buffer[7] + 0x432aff97, 10);
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281 | MD5STEP(F4, c, d, a, b, md5->buffer[14] + 0xab9423a7, 15);
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282 | MD5STEP(F4, b, c, d, a, md5->buffer[5] + 0xfc93a039, 21);
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283 | MD5STEP(F4, a, b, c, d, md5->buffer[12] + 0x655b59c3, 6);
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284 | MD5STEP(F4, d, a, b, c, md5->buffer[3] + 0x8f0ccc92, 10);
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285 | MD5STEP(F4, c, d, a, b, md5->buffer[10] + 0xffeff47d, 15);
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286 | MD5STEP(F4, b, c, d, a, md5->buffer[1] + 0x85845dd1, 21);
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287 | MD5STEP(F4, a, b, c, d, md5->buffer[8] + 0x6fa87e4f, 6);
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288 | MD5STEP(F4, d, a, b, c, md5->buffer[15] + 0xfe2ce6e0, 10);
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289 | MD5STEP(F4, c, d, a, b, md5->buffer[6] + 0xa3014314, 15);
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290 | MD5STEP(F4, b, c, d, a, md5->buffer[13] + 0x4e0811a1, 21);
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291 | MD5STEP(F4, a, b, c, d, md5->buffer[4] + 0xf7537e82, 6);
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292 | MD5STEP(F4, d, a, b, c, md5->buffer[11] + 0xbd3af235, 10);
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293 | MD5STEP(F4, c, d, a, b, md5->buffer[2] + 0x2ad7d2bb, 15);
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294 | MD5STEP(F4, b, c, d, a, md5->buffer[9] + 0xeb86d391, 21);
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295 |
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296 | /* Add the working vars back into digest state[] */
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297 | md5->digest[0] += a;
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298 | md5->digest[1] += b;
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299 | md5->digest[2] += c;
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300 | md5->digest[3] += d;
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301 | }
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302 |
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303 | #endif /* FREESCALE_MMCAU */
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304 |
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305 |
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306 | static INLINE void AddLength(Md5* md5, word32 len)
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307 | {
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308 | word32 tmp = md5->loLen;
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309 | if ( (md5->loLen += len) < tmp)
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310 | md5->hiLen++; /* carry low to high */
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311 | }
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312 |
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313 |
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314 | void wc_Md5Update(Md5* md5, const byte* data, word32 len)
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315 | {
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316 | /* do block size increments */
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317 | byte* local = (byte*)md5->buffer;
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318 |
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319 | while (len) {
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320 | word32 add = min(len, MD5_BLOCK_SIZE - md5->buffLen);
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321 | XMEMCPY(&local[md5->buffLen], data, add);
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322 |
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323 | md5->buffLen += add;
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324 | data += add;
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325 | len -= add;
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326 |
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327 | if (md5->buffLen == MD5_BLOCK_SIZE) {
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328 | #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
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329 | ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
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330 | #endif
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331 | XTRANSFORM(md5, local);
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332 | AddLength(md5, MD5_BLOCK_SIZE);
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333 | md5->buffLen = 0;
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334 | }
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335 | }
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336 | }
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337 |
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338 |
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339 | void wc_Md5Final(Md5* md5, byte* hash)
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340 | {
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341 | byte* local = (byte*)md5->buffer;
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342 |
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343 | AddLength(md5, md5->buffLen); /* before adding pads */
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344 |
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345 | local[md5->buffLen++] = 0x80; /* add 1 */
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346 |
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347 | /* pad with zeros */
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348 | if (md5->buffLen > MD5_PAD_SIZE) {
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349 | XMEMSET(&local[md5->buffLen], 0, MD5_BLOCK_SIZE - md5->buffLen);
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350 | md5->buffLen += MD5_BLOCK_SIZE - md5->buffLen;
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351 |
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352 | #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
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353 | ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
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354 | #endif
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355 | XTRANSFORM(md5, local);
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356 | md5->buffLen = 0;
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357 | }
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358 | XMEMSET(&local[md5->buffLen], 0, MD5_PAD_SIZE - md5->buffLen);
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359 |
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360 | /* put lengths in bits */
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361 | md5->hiLen = (md5->loLen >> (8*sizeof(md5->loLen) - 3)) +
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362 | (md5->hiLen << 3);
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363 | md5->loLen = md5->loLen << 3;
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364 |
|
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365 | /* store lengths */
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366 | #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
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367 | ByteReverseWords(md5->buffer, md5->buffer, MD5_BLOCK_SIZE);
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368 | #endif
|
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369 | /* ! length ordering dependent on digest endian type ! */
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370 | XMEMCPY(&local[MD5_PAD_SIZE], &md5->loLen, sizeof(word32));
|
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371 | XMEMCPY(&local[MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32));
|
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372 |
|
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373 | XTRANSFORM(md5, local);
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374 | #ifdef BIG_ENDIAN_ORDER
|
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375 | ByteReverseWords(md5->digest, md5->digest, MD5_DIGEST_SIZE);
|
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376 | #endif
|
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377 | XMEMCPY(hash, md5->digest, MD5_DIGEST_SIZE);
|
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378 |
|
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379 | wc_InitMd5(md5); /* reset state */
|
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380 | }
|
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381 |
|
---|
382 | #endif /* STM32F2_HASH */
|
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383 |
|
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384 |
|
---|
385 | int wc_Md5Hash(const byte* data, word32 len, byte* hash)
|
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386 | {
|
---|
387 | #ifdef WOLFSSL_SMALL_STACK
|
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388 | Md5* md5;
|
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389 | #else
|
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390 | Md5 md5[1];
|
---|
391 | #endif
|
---|
392 |
|
---|
393 | #ifdef WOLFSSL_SMALL_STACK
|
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394 | md5 = (Md5*)XMALLOC(sizeof(Md5), NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
395 | if (md5 == NULL)
|
---|
396 | return MEMORY_E;
|
---|
397 | #endif
|
---|
398 |
|
---|
399 | wc_InitMd5(md5);
|
---|
400 | wc_Md5Update(md5, data, len);
|
---|
401 | wc_Md5Final(md5, hash);
|
---|
402 |
|
---|
403 | #ifdef WOLFSSL_SMALL_STACK
|
---|
404 | XFREE(md5, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
405 | #endif
|
---|
406 |
|
---|
407 | return 0;
|
---|
408 | }
|
---|
409 |
|
---|
410 | #endif /* WOLFSSL_TI_HASH */
|
---|
411 |
|
---|
412 | #endif /* NO_MD5 */
|
---|