[164] | 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 */
|
---|
| 383 |
|
---|
| 384 |
|
---|
| 385 | int wc_Md5Hash(const byte* data, word32 len, byte* hash)
|
---|
| 386 | {
|
---|
| 387 | #ifdef WOLFSSL_SMALL_STACK
|
---|
| 388 | Md5* md5;
|
---|
| 389 | #else
|
---|
| 390 | Md5 md5[1];
|
---|
| 391 | #endif
|
---|
| 392 |
|
---|
| 393 | #ifdef WOLFSSL_SMALL_STACK
|
---|
| 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 */
|
---|