wolf SSL / wolfSSL

wolfSSL SSL/TLS library, support up to TLS1.3

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wolfcrypt/src/sha.c@4:1b0d80432c79, 2016-04-28 (annotated)

Committer:
wolfSSL
Date:
Thu Apr 28 00:57:21 2016 +0000
Revision:
4:1b0d80432c79
wolfSSL 3.9.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 4:1b0d80432c79 1 /* sha.c
wolfSSL 4:1b0d80432c79 2 *
wolfSSL 4:1b0d80432c79 3 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 4:1b0d80432c79 4 *
wolfSSL 4:1b0d80432c79 5 * This file is part of wolfSSL.
wolfSSL 4:1b0d80432c79 6 *
wolfSSL 4:1b0d80432c79 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 4:1b0d80432c79 8 * it under the terms of the GNU General Public License as published by
wolfSSL 4:1b0d80432c79 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 4:1b0d80432c79 10 * (at your option) any later version.
wolfSSL 4:1b0d80432c79 11 *
wolfSSL 4:1b0d80432c79 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 4:1b0d80432c79 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 4:1b0d80432c79 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 4:1b0d80432c79 15 * GNU General Public License for more details.
wolfSSL 4:1b0d80432c79 16 *
wolfSSL 4:1b0d80432c79 17 * You should have received a copy of the GNU General Public License
wolfSSL 4:1b0d80432c79 18 * along with this program; if not, write to the Free Software
wolfSSL 4:1b0d80432c79 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 4:1b0d80432c79 20 */
wolfSSL 4:1b0d80432c79 21
wolfSSL 4:1b0d80432c79 22
wolfSSL 4:1b0d80432c79 23
wolfSSL 4:1b0d80432c79 24 #ifdef HAVE_CONFIG_H
wolfSSL 4:1b0d80432c79 25 #include <config.h>
wolfSSL 4:1b0d80432c79 26 #endif
wolfSSL 4:1b0d80432c79 27
wolfSSL 4:1b0d80432c79 28 #include <wolfssl/wolfcrypt/settings.h>
wolfSSL 4:1b0d80432c79 29
wolfSSL 4:1b0d80432c79 30 #if !defined(NO_SHA)
wolfSSL 4:1b0d80432c79 31
wolfSSL 4:1b0d80432c79 32 #include <wolfssl/wolfcrypt/sha.h>
wolfSSL 4:1b0d80432c79 33 #include <wolfssl/wolfcrypt/logging.h>
wolfSSL 4:1b0d80432c79 34 #include <wolfssl/wolfcrypt/error-crypt.h>
wolfSSL 4:1b0d80432c79 35
wolfSSL 4:1b0d80432c79 36 #ifdef NO_INLINE
wolfSSL 4:1b0d80432c79 37 #include <wolfssl/wolfcrypt/misc.h>
wolfSSL 4:1b0d80432c79 38 #else
wolfSSL 4:1b0d80432c79 39 #include <wolfcrypt/src/misc.c>
wolfSSL 4:1b0d80432c79 40 #endif
wolfSSL 4:1b0d80432c79 41
wolfSSL 4:1b0d80432c79 42 /* fips wrapper calls, user can call direct */
wolfSSL 4:1b0d80432c79 43 #ifdef HAVE_FIPS
wolfSSL 4:1b0d80432c79 44 int wc_InitSha(Sha* sha)
wolfSSL 4:1b0d80432c79 45 {
wolfSSL 4:1b0d80432c79 46 return InitSha_fips(sha);
wolfSSL 4:1b0d80432c79 47 }
wolfSSL 4:1b0d80432c79 48
wolfSSL 4:1b0d80432c79 49
wolfSSL 4:1b0d80432c79 50 int wc_ShaUpdate(Sha* sha, const byte* data, word32 len)
wolfSSL 4:1b0d80432c79 51 {
wolfSSL 4:1b0d80432c79 52 return ShaUpdate_fips(sha, data, len);
wolfSSL 4:1b0d80432c79 53 }
wolfSSL 4:1b0d80432c79 54
wolfSSL 4:1b0d80432c79 55
wolfSSL 4:1b0d80432c79 56 int wc_ShaFinal(Sha* sha, byte* out)
wolfSSL 4:1b0d80432c79 57 {
wolfSSL 4:1b0d80432c79 58 return ShaFinal_fips(sha,out);
wolfSSL 4:1b0d80432c79 59 }
wolfSSL 4:1b0d80432c79 60
wolfSSL 4:1b0d80432c79 61 #else /* else build without fips */
wolfSSL 4:1b0d80432c79 62
wolfSSL 4:1b0d80432c79 63 #if defined(WOLFSSL_TI_HASH)
wolfSSL 4:1b0d80432c79 64 /* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
wolfSSL 4:1b0d80432c79 65 #else
wolfSSL 4:1b0d80432c79 66
wolfSSL 4:1b0d80432c79 67 #ifdef WOLFSSL_PIC32MZ_HASH
wolfSSL 4:1b0d80432c79 68 #define wc_InitSha wc_InitSha_sw
wolfSSL 4:1b0d80432c79 69 #define wc_ShaUpdate wc_ShaUpdate_sw
wolfSSL 4:1b0d80432c79 70 #define wc_ShaFinal wc_ShaFinal_sw
wolfSSL 4:1b0d80432c79 71 #endif
wolfSSL 4:1b0d80432c79 72
wolfSSL 4:1b0d80432c79 73
wolfSSL 4:1b0d80432c79 74 #ifdef FREESCALE_MMCAU
wolfSSL 4:1b0d80432c79 75 #include "cau_api.h"
wolfSSL 4:1b0d80432c79 76 #define XTRANSFORM(S,B) Transform((S), (B))
wolfSSL 4:1b0d80432c79 77 #else
wolfSSL 4:1b0d80432c79 78 #define XTRANSFORM(S,B) Transform((S))
wolfSSL 4:1b0d80432c79 79 #endif
wolfSSL 4:1b0d80432c79 80
wolfSSL 4:1b0d80432c79 81 #ifdef STM32F2_HASH
wolfSSL 4:1b0d80432c79 82 /*
wolfSSL 4:1b0d80432c79 83 * STM32F2 hardware SHA1 support through the STM32F2 standard peripheral
wolfSSL 4:1b0d80432c79 84 * library. Documentation located in STM32F2xx Standard Peripheral Library
wolfSSL 4:1b0d80432c79 85 * document (See note in README).
wolfSSL 4:1b0d80432c79 86 */
wolfSSL 4:1b0d80432c79 87 #include "stm32f2xx.h"
wolfSSL 4:1b0d80432c79 88 #include "stm32f2xx_hash.h"
wolfSSL 4:1b0d80432c79 89
wolfSSL 4:1b0d80432c79 90 int wc_InitSha(Sha* sha)
wolfSSL 4:1b0d80432c79 91 {
wolfSSL 4:1b0d80432c79 92 /* STM32F2 struct notes:
wolfSSL 4:1b0d80432c79 93 * sha->buffer = first 4 bytes used to hold partial block if needed
wolfSSL 4:1b0d80432c79 94 * sha->buffLen = num bytes currently stored in sha->buffer
wolfSSL 4:1b0d80432c79 95 * sha->loLen = num bytes that have been written to STM32 FIFO
wolfSSL 4:1b0d80432c79 96 */
wolfSSL 4:1b0d80432c79 97 XMEMSET(sha->buffer, 0, SHA_REG_SIZE);
wolfSSL 4:1b0d80432c79 98 sha->buffLen = 0;
wolfSSL 4:1b0d80432c79 99 sha->loLen = 0;
wolfSSL 4:1b0d80432c79 100
wolfSSL 4:1b0d80432c79 101 /* initialize HASH peripheral */
wolfSSL 4:1b0d80432c79 102 HASH_DeInit();
wolfSSL 4:1b0d80432c79 103
wolfSSL 4:1b0d80432c79 104 /* configure algo used, algo mode, datatype */
wolfSSL 4:1b0d80432c79 105 HASH->CR &= ~ (HASH_CR_ALGO | HASH_CR_DATATYPE | HASH_CR_MODE);
wolfSSL 4:1b0d80432c79 106 HASH->CR |= (HASH_AlgoSelection_SHA1 | HASH_AlgoMode_HASH
wolfSSL 4:1b0d80432c79 107 | HASH_DataType_8b);
wolfSSL 4:1b0d80432c79 108
wolfSSL 4:1b0d80432c79 109 /* reset HASH processor */
wolfSSL 4:1b0d80432c79 110 HASH->CR |= HASH_CR_INIT;
wolfSSL 4:1b0d80432c79 111
wolfSSL 4:1b0d80432c79 112 return 0;
wolfSSL 4:1b0d80432c79 113 }
wolfSSL 4:1b0d80432c79 114
wolfSSL 4:1b0d80432c79 115 int wc_ShaUpdate(Sha* sha, const byte* data, word32 len)
wolfSSL 4:1b0d80432c79 116 {
wolfSSL 4:1b0d80432c79 117 word32 i = 0;
wolfSSL 4:1b0d80432c79 118 word32 fill = 0;
wolfSSL 4:1b0d80432c79 119 word32 diff = 0;
wolfSSL 4:1b0d80432c79 120
wolfSSL 4:1b0d80432c79 121 /* if saved partial block is available */
wolfSSL 4:1b0d80432c79 122 if (sha->buffLen) {
wolfSSL 4:1b0d80432c79 123 fill = 4 - sha->buffLen;
wolfSSL 4:1b0d80432c79 124
wolfSSL 4:1b0d80432c79 125 /* if enough data to fill, fill and push to FIFO */
wolfSSL 4:1b0d80432c79 126 if (fill <= len) {
wolfSSL 4:1b0d80432c79 127 XMEMCPY((byte*)sha->buffer + sha->buffLen, data, fill);
wolfSSL 4:1b0d80432c79 128 HASH_DataIn(*(uint32_t*)sha->buffer);
wolfSSL 4:1b0d80432c79 129
wolfSSL 4:1b0d80432c79 130 data += fill;
wolfSSL 4:1b0d80432c79 131 len -= fill;
wolfSSL 4:1b0d80432c79 132 sha->loLen += 4;
wolfSSL 4:1b0d80432c79 133 sha->buffLen = 0;
wolfSSL 4:1b0d80432c79 134 } else {
wolfSSL 4:1b0d80432c79 135 /* append partial to existing stored block */
wolfSSL 4:1b0d80432c79 136 XMEMCPY((byte*)sha->buffer + sha->buffLen, data, len);
wolfSSL 4:1b0d80432c79 137 sha->buffLen += len;
wolfSSL 4:1b0d80432c79 138 return;
wolfSSL 4:1b0d80432c79 139 }
wolfSSL 4:1b0d80432c79 140 }
wolfSSL 4:1b0d80432c79 141
wolfSSL 4:1b0d80432c79 142 /* write input block in the IN FIFO */
wolfSSL 4:1b0d80432c79 143 for(i = 0; i < len; i += 4)
wolfSSL 4:1b0d80432c79 144 {
wolfSSL 4:1b0d80432c79 145 diff = len - i;
wolfSSL 4:1b0d80432c79 146 if ( diff < 4) {
wolfSSL 4:1b0d80432c79 147 /* store incomplete last block, not yet in FIFO */
wolfSSL 4:1b0d80432c79 148 XMEMSET(sha->buffer, 0, SHA_REG_SIZE);
wolfSSL 4:1b0d80432c79 149 XMEMCPY((byte*)sha->buffer, data, diff);
wolfSSL 4:1b0d80432c79 150 sha->buffLen = diff;
wolfSSL 4:1b0d80432c79 151 } else {
wolfSSL 4:1b0d80432c79 152 HASH_DataIn(*(uint32_t*)data);
wolfSSL 4:1b0d80432c79 153 data+=4;
wolfSSL 4:1b0d80432c79 154 }
wolfSSL 4:1b0d80432c79 155 }
wolfSSL 4:1b0d80432c79 156
wolfSSL 4:1b0d80432c79 157 /* keep track of total data length thus far */
wolfSSL 4:1b0d80432c79 158 sha->loLen += (len - sha->buffLen);
wolfSSL 4:1b0d80432c79 159
wolfSSL 4:1b0d80432c79 160 return 0;
wolfSSL 4:1b0d80432c79 161 }
wolfSSL 4:1b0d80432c79 162
wolfSSL 4:1b0d80432c79 163 int wc_ShaFinal(Sha* sha, byte* hash)
wolfSSL 4:1b0d80432c79 164 {
wolfSSL 4:1b0d80432c79 165 __IO uint16_t nbvalidbitsdata = 0;
wolfSSL 4:1b0d80432c79 166
wolfSSL 4:1b0d80432c79 167 /* finish reading any trailing bytes into FIFO */
wolfSSL 4:1b0d80432c79 168 if (sha->buffLen) {
wolfSSL 4:1b0d80432c79 169 HASH_DataIn(*(uint32_t*)sha->buffer);
wolfSSL 4:1b0d80432c79 170 sha->loLen += sha->buffLen;
wolfSSL 4:1b0d80432c79 171 }
wolfSSL 4:1b0d80432c79 172
wolfSSL 4:1b0d80432c79 173 /* calculate number of valid bits in last word of input data */
wolfSSL 4:1b0d80432c79 174 nbvalidbitsdata = 8 * (sha->loLen % SHA_REG_SIZE);
wolfSSL 4:1b0d80432c79 175
wolfSSL 4:1b0d80432c79 176 /* configure number of valid bits in last word of the data */
wolfSSL 4:1b0d80432c79 177 HASH_SetLastWordValidBitsNbr(nbvalidbitsdata);
wolfSSL 4:1b0d80432c79 178
wolfSSL 4:1b0d80432c79 179 /* start HASH processor */
wolfSSL 4:1b0d80432c79 180 HASH_StartDigest();
wolfSSL 4:1b0d80432c79 181
wolfSSL 4:1b0d80432c79 182 /* wait until Busy flag == RESET */
wolfSSL 4:1b0d80432c79 183 while (HASH_GetFlagStatus(HASH_FLAG_BUSY) != RESET) {}
wolfSSL 4:1b0d80432c79 184
wolfSSL 4:1b0d80432c79 185 /* read message digest */
wolfSSL 4:1b0d80432c79 186 sha->digest[0] = HASH->HR[0];
wolfSSL 4:1b0d80432c79 187 sha->digest[1] = HASH->HR[1];
wolfSSL 4:1b0d80432c79 188 sha->digest[2] = HASH->HR[2];
wolfSSL 4:1b0d80432c79 189 sha->digest[3] = HASH->HR[3];
wolfSSL 4:1b0d80432c79 190 sha->digest[4] = HASH->HR[4];
wolfSSL 4:1b0d80432c79 191
wolfSSL 4:1b0d80432c79 192 ByteReverseWords(sha->digest, sha->digest, SHA_DIGEST_SIZE);
wolfSSL 4:1b0d80432c79 193
wolfSSL 4:1b0d80432c79 194 XMEMCPY(hash, sha->digest, SHA_DIGEST_SIZE);
wolfSSL 4:1b0d80432c79 195
wolfSSL 4:1b0d80432c79 196 return wc_InitSha(sha); /* reset state */
wolfSSL 4:1b0d80432c79 197 }
wolfSSL 4:1b0d80432c79 198
wolfSSL 4:1b0d80432c79 199 #else /* wc_ software implementation */
wolfSSL 4:1b0d80432c79 200
wolfSSL 4:1b0d80432c79 201 #ifndef WOLFSSL_HAVE_MIN
wolfSSL 4:1b0d80432c79 202 #define WOLFSSL_HAVE_MIN
wolfSSL 4:1b0d80432c79 203
wolfSSL 4:1b0d80432c79 204 static INLINE word32 min(word32 a, word32 b)
wolfSSL 4:1b0d80432c79 205 {
wolfSSL 4:1b0d80432c79 206 return a > b ? b : a;
wolfSSL 4:1b0d80432c79 207 }
wolfSSL 4:1b0d80432c79 208
wolfSSL 4:1b0d80432c79 209 #endif /* WOLFSSL_HAVE_MIN */
wolfSSL 4:1b0d80432c79 210
wolfSSL 4:1b0d80432c79 211
wolfSSL 4:1b0d80432c79 212 int wc_InitSha(Sha* sha)
wolfSSL 4:1b0d80432c79 213 {
wolfSSL 4:1b0d80432c79 214 int ret = 0;
wolfSSL 4:1b0d80432c79 215 #ifdef FREESCALE_MMCAU
wolfSSL 4:1b0d80432c79 216 ret = wolfSSL_CryptHwMutexLock();
wolfSSL 4:1b0d80432c79 217 if(ret != 0) {
wolfSSL 4:1b0d80432c79 218 return ret;
wolfSSL 4:1b0d80432c79 219 }
wolfSSL 4:1b0d80432c79 220 cau_sha1_initialize_output(sha->digest);
wolfSSL 4:1b0d80432c79 221 wolfSSL_CryptHwMutexUnLock();
wolfSSL 4:1b0d80432c79 222 #else
wolfSSL 4:1b0d80432c79 223 sha->digest[0] = 0x67452301L;
wolfSSL 4:1b0d80432c79 224 sha->digest[1] = 0xEFCDAB89L;
wolfSSL 4:1b0d80432c79 225 sha->digest[2] = 0x98BADCFEL;
wolfSSL 4:1b0d80432c79 226 sha->digest[3] = 0x10325476L;
wolfSSL 4:1b0d80432c79 227 sha->digest[4] = 0xC3D2E1F0L;
wolfSSL 4:1b0d80432c79 228 #endif
wolfSSL 4:1b0d80432c79 229
wolfSSL 4:1b0d80432c79 230 sha->buffLen = 0;
wolfSSL 4:1b0d80432c79 231 sha->loLen = 0;
wolfSSL 4:1b0d80432c79 232 sha->hiLen = 0;
wolfSSL 4:1b0d80432c79 233
wolfSSL 4:1b0d80432c79 234 return ret;
wolfSSL 4:1b0d80432c79 235 }
wolfSSL 4:1b0d80432c79 236
wolfSSL 4:1b0d80432c79 237 #ifdef FREESCALE_MMCAU
wolfSSL 4:1b0d80432c79 238 static int Transform(Sha* sha, byte* data)
wolfSSL 4:1b0d80432c79 239 {
wolfSSL 4:1b0d80432c79 240 int ret = wolfSSL_CryptHwMutexLock();
wolfSSL 4:1b0d80432c79 241 if(ret == 0) {
wolfSSL 4:1b0d80432c79 242 cau_sha1_hash_n(data, 1, sha->digest);
wolfSSL 4:1b0d80432c79 243 wolfSSL_CryptHwMutexUnLock();
wolfSSL 4:1b0d80432c79 244 }
wolfSSL 4:1b0d80432c79 245 return ret;
wolfSSL 4:1b0d80432c79 246 }
wolfSSL 4:1b0d80432c79 247 #endif /* FREESCALE_MMCAU */
wolfSSL 4:1b0d80432c79 248
wolfSSL 4:1b0d80432c79 249 #ifndef FREESCALE_MMCAU
wolfSSL 4:1b0d80432c79 250
wolfSSL 4:1b0d80432c79 251 #define blk0(i) (W[i] = sha->buffer[i])
wolfSSL 4:1b0d80432c79 252 #define blk1(i) (W[(i)&15] = \
wolfSSL 4:1b0d80432c79 253 rotlFixed(W[((i)+13)&15]^W[((i)+8)&15]^W[((i)+2)&15]^W[(i)&15],1))
wolfSSL 4:1b0d80432c79 254
wolfSSL 4:1b0d80432c79 255 #define f1(x,y,z) ((z)^((x) &((y)^(z))))
wolfSSL 4:1b0d80432c79 256 #define f2(x,y,z) ((x)^(y)^(z))
wolfSSL 4:1b0d80432c79 257 #define f3(x,y,z) (((x)&(y))|((z)&((x)|(y))))
wolfSSL 4:1b0d80432c79 258 #define f4(x,y,z) ((x)^(y)^(z))
wolfSSL 4:1b0d80432c79 259
wolfSSL 4:1b0d80432c79 260 /* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
wolfSSL 4:1b0d80432c79 261 #define R0(v,w,x,y,z,i) (z)+= f1((w),(x),(y)) + blk0((i)) + 0x5A827999+ \
wolfSSL 4:1b0d80432c79 262 rotlFixed((v),5); (w) = rotlFixed((w),30);
wolfSSL 4:1b0d80432c79 263 #define R1(v,w,x,y,z,i) (z)+= f1((w),(x),(y)) + blk1((i)) + 0x5A827999+ \
wolfSSL 4:1b0d80432c79 264 rotlFixed((v),5); (w) = rotlFixed((w),30);
wolfSSL 4:1b0d80432c79 265 #define R2(v,w,x,y,z,i) (z)+= f2((w),(x),(y)) + blk1((i)) + 0x6ED9EBA1+ \
wolfSSL 4:1b0d80432c79 266 rotlFixed((v),5); (w) = rotlFixed((w),30);
wolfSSL 4:1b0d80432c79 267 #define R3(v,w,x,y,z,i) (z)+= f3((w),(x),(y)) + blk1((i)) + 0x8F1BBCDC+ \
wolfSSL 4:1b0d80432c79 268 rotlFixed((v),5); (w) = rotlFixed((w),30);
wolfSSL 4:1b0d80432c79 269 #define R4(v,w,x,y,z,i) (z)+= f4((w),(x),(y)) + blk1((i)) + 0xCA62C1D6+ \
wolfSSL 4:1b0d80432c79 270 rotlFixed((v),5); (w) = rotlFixed((w),30);
wolfSSL 4:1b0d80432c79 271
wolfSSL 4:1b0d80432c79 272 static void Transform(Sha* sha)
wolfSSL 4:1b0d80432c79 273 {
wolfSSL 4:1b0d80432c79 274 word32 W[SHA_BLOCK_SIZE / sizeof(word32)];
wolfSSL 4:1b0d80432c79 275
wolfSSL 4:1b0d80432c79 276 /* Copy context->state[] to working vars */
wolfSSL 4:1b0d80432c79 277 word32 a = sha->digest[0];
wolfSSL 4:1b0d80432c79 278 word32 b = sha->digest[1];
wolfSSL 4:1b0d80432c79 279 word32 c = sha->digest[2];
wolfSSL 4:1b0d80432c79 280 word32 d = sha->digest[3];
wolfSSL 4:1b0d80432c79 281 word32 e = sha->digest[4];
wolfSSL 4:1b0d80432c79 282
wolfSSL 4:1b0d80432c79 283 #ifdef USE_SLOW_SHA
wolfSSL 4:1b0d80432c79 284 word32 t, i;
wolfSSL 4:1b0d80432c79 285
wolfSSL 4:1b0d80432c79 286 for (i = 0; i < 16; i++) {
wolfSSL 4:1b0d80432c79 287 R0(a, b, c, d, e, i);
wolfSSL 4:1b0d80432c79 288 t = e; e = d; d = c; c = b; b = a; a = t;
wolfSSL 4:1b0d80432c79 289 }
wolfSSL 4:1b0d80432c79 290
wolfSSL 4:1b0d80432c79 291 for (; i < 20; i++) {
wolfSSL 4:1b0d80432c79 292 R1(a, b, c, d, e, i);
wolfSSL 4:1b0d80432c79 293 t = e; e = d; d = c; c = b; b = a; a = t;
wolfSSL 4:1b0d80432c79 294 }
wolfSSL 4:1b0d80432c79 295
wolfSSL 4:1b0d80432c79 296 for (; i < 40; i++) {
wolfSSL 4:1b0d80432c79 297 R2(a, b, c, d, e, i);
wolfSSL 4:1b0d80432c79 298 t = e; e = d; d = c; c = b; b = a; a = t;
wolfSSL 4:1b0d80432c79 299 }
wolfSSL 4:1b0d80432c79 300
wolfSSL 4:1b0d80432c79 301 for (; i < 60; i++) {
wolfSSL 4:1b0d80432c79 302 R3(a, b, c, d, e, i);
wolfSSL 4:1b0d80432c79 303 t = e; e = d; d = c; c = b; b = a; a = t;
wolfSSL 4:1b0d80432c79 304 }
wolfSSL 4:1b0d80432c79 305
wolfSSL 4:1b0d80432c79 306 for (; i < 80; i++) {
wolfSSL 4:1b0d80432c79 307 R4(a, b, c, d, e, i);
wolfSSL 4:1b0d80432c79 308 t = e; e = d; d = c; c = b; b = a; a = t;
wolfSSL 4:1b0d80432c79 309 }
wolfSSL 4:1b0d80432c79 310 #else
wolfSSL 4:1b0d80432c79 311 /* nearly 1 K bigger in code size but 25% faster */
wolfSSL 4:1b0d80432c79 312 /* 4 rounds of 20 operations each. Loop unrolled. */
wolfSSL 4:1b0d80432c79 313 R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
wolfSSL 4:1b0d80432c79 314 R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
wolfSSL 4:1b0d80432c79 315 R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
wolfSSL 4:1b0d80432c79 316 R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
wolfSSL 4:1b0d80432c79 317
wolfSSL 4:1b0d80432c79 318 R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
wolfSSL 4:1b0d80432c79 319
wolfSSL 4:1b0d80432c79 320 R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
wolfSSL 4:1b0d80432c79 321 R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
wolfSSL 4:1b0d80432c79 322 R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
wolfSSL 4:1b0d80432c79 323 R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
wolfSSL 4:1b0d80432c79 324 R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
wolfSSL 4:1b0d80432c79 325
wolfSSL 4:1b0d80432c79 326 R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
wolfSSL 4:1b0d80432c79 327 R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
wolfSSL 4:1b0d80432c79 328 R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
wolfSSL 4:1b0d80432c79 329 R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
wolfSSL 4:1b0d80432c79 330 R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
wolfSSL 4:1b0d80432c79 331
wolfSSL 4:1b0d80432c79 332 R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
wolfSSL 4:1b0d80432c79 333 R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
wolfSSL 4:1b0d80432c79 334 R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
wolfSSL 4:1b0d80432c79 335 R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
wolfSSL 4:1b0d80432c79 336 R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
wolfSSL 4:1b0d80432c79 337 #endif
wolfSSL 4:1b0d80432c79 338
wolfSSL 4:1b0d80432c79 339 /* Add the working vars back into digest state[] */
wolfSSL 4:1b0d80432c79 340 sha->digest[0] += a;
wolfSSL 4:1b0d80432c79 341 sha->digest[1] += b;
wolfSSL 4:1b0d80432c79 342 sha->digest[2] += c;
wolfSSL 4:1b0d80432c79 343 sha->digest[3] += d;
wolfSSL 4:1b0d80432c79 344 sha->digest[4] += e;
wolfSSL 4:1b0d80432c79 345 }
wolfSSL 4:1b0d80432c79 346
wolfSSL 4:1b0d80432c79 347 #endif /* FREESCALE_MMCAU */
wolfSSL 4:1b0d80432c79 348
wolfSSL 4:1b0d80432c79 349
wolfSSL 4:1b0d80432c79 350 static INLINE void AddLength(Sha* sha, word32 len)
wolfSSL 4:1b0d80432c79 351 {
wolfSSL 4:1b0d80432c79 352 word32 tmp = sha->loLen;
wolfSSL 4:1b0d80432c79 353 if ( (sha->loLen += len) < tmp)
wolfSSL 4:1b0d80432c79 354 sha->hiLen++; /* carry low to high */
wolfSSL 4:1b0d80432c79 355 }
wolfSSL 4:1b0d80432c79 356
wolfSSL 4:1b0d80432c79 357
wolfSSL 4:1b0d80432c79 358 int wc_ShaUpdate(Sha* sha, const byte* data, word32 len)
wolfSSL 4:1b0d80432c79 359 {
wolfSSL 4:1b0d80432c79 360 /* do block size increments */
wolfSSL 4:1b0d80432c79 361 byte* local = (byte*)sha->buffer;
wolfSSL 4:1b0d80432c79 362
wolfSSL 4:1b0d80432c79 363 while (len) {
wolfSSL 4:1b0d80432c79 364 word32 add = min(len, SHA_BLOCK_SIZE - sha->buffLen);
wolfSSL 4:1b0d80432c79 365 XMEMCPY(&local[sha->buffLen], data, add);
wolfSSL 4:1b0d80432c79 366
wolfSSL 4:1b0d80432c79 367 sha->buffLen += add;
wolfSSL 4:1b0d80432c79 368 data += add;
wolfSSL 4:1b0d80432c79 369 len -= add;
wolfSSL 4:1b0d80432c79 370
wolfSSL 4:1b0d80432c79 371 if (sha->buffLen == SHA_BLOCK_SIZE) {
wolfSSL 4:1b0d80432c79 372 #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
wolfSSL 4:1b0d80432c79 373 ByteReverseWords(sha->buffer, sha->buffer, SHA_BLOCK_SIZE);
wolfSSL 4:1b0d80432c79 374 #endif
wolfSSL 4:1b0d80432c79 375 XTRANSFORM(sha, local);
wolfSSL 4:1b0d80432c79 376 AddLength(sha, SHA_BLOCK_SIZE);
wolfSSL 4:1b0d80432c79 377 sha->buffLen = 0;
wolfSSL 4:1b0d80432c79 378 }
wolfSSL 4:1b0d80432c79 379 }
wolfSSL 4:1b0d80432c79 380
wolfSSL 4:1b0d80432c79 381 return 0;
wolfSSL 4:1b0d80432c79 382 }
wolfSSL 4:1b0d80432c79 383
wolfSSL 4:1b0d80432c79 384
wolfSSL 4:1b0d80432c79 385 int wc_ShaFinal(Sha* sha, byte* hash)
wolfSSL 4:1b0d80432c79 386 {
wolfSSL 4:1b0d80432c79 387 byte* local = (byte*)sha->buffer;
wolfSSL 4:1b0d80432c79 388
wolfSSL 4:1b0d80432c79 389 AddLength(sha, sha->buffLen); /* before adding pads */
wolfSSL 4:1b0d80432c79 390
wolfSSL 4:1b0d80432c79 391 local[sha->buffLen++] = 0x80; /* add 1 */
wolfSSL 4:1b0d80432c79 392
wolfSSL 4:1b0d80432c79 393 /* pad with zeros */
wolfSSL 4:1b0d80432c79 394 if (sha->buffLen > SHA_PAD_SIZE) {
wolfSSL 4:1b0d80432c79 395 XMEMSET(&local[sha->buffLen], 0, SHA_BLOCK_SIZE - sha->buffLen);
wolfSSL 4:1b0d80432c79 396 sha->buffLen += SHA_BLOCK_SIZE - sha->buffLen;
wolfSSL 4:1b0d80432c79 397
wolfSSL 4:1b0d80432c79 398 #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
wolfSSL 4:1b0d80432c79 399 ByteReverseWords(sha->buffer, sha->buffer, SHA_BLOCK_SIZE);
wolfSSL 4:1b0d80432c79 400 #endif
wolfSSL 4:1b0d80432c79 401 XTRANSFORM(sha, local);
wolfSSL 4:1b0d80432c79 402 sha->buffLen = 0;
wolfSSL 4:1b0d80432c79 403 }
wolfSSL 4:1b0d80432c79 404 XMEMSET(&local[sha->buffLen], 0, SHA_PAD_SIZE - sha->buffLen);
wolfSSL 4:1b0d80432c79 405
wolfSSL 4:1b0d80432c79 406 /* put lengths in bits */
wolfSSL 4:1b0d80432c79 407 sha->hiLen = (sha->loLen >> (8*sizeof(sha->loLen) - 3)) +
wolfSSL 4:1b0d80432c79 408 (sha->hiLen << 3);
wolfSSL 4:1b0d80432c79 409 sha->loLen = sha->loLen << 3;
wolfSSL 4:1b0d80432c79 410
wolfSSL 4:1b0d80432c79 411 /* store lengths */
wolfSSL 4:1b0d80432c79 412 #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
wolfSSL 4:1b0d80432c79 413 ByteReverseWords(sha->buffer, sha->buffer, SHA_BLOCK_SIZE);
wolfSSL 4:1b0d80432c79 414 #endif
wolfSSL 4:1b0d80432c79 415 /* ! length ordering dependent on digest endian type ! */
wolfSSL 4:1b0d80432c79 416 XMEMCPY(&local[SHA_PAD_SIZE], &sha->hiLen, sizeof(word32));
wolfSSL 4:1b0d80432c79 417 XMEMCPY(&local[SHA_PAD_SIZE + sizeof(word32)], &sha->loLen, sizeof(word32));
wolfSSL 4:1b0d80432c79 418
wolfSSL 4:1b0d80432c79 419 #ifdef FREESCALE_MMCAU
wolfSSL 4:1b0d80432c79 420 /* Kinetis requires only these bytes reversed */
wolfSSL 4:1b0d80432c79 421 ByteReverseWords(&sha->buffer[SHA_PAD_SIZE/sizeof(word32)],
wolfSSL 4:1b0d80432c79 422 &sha->buffer[SHA_PAD_SIZE/sizeof(word32)],
wolfSSL 4:1b0d80432c79 423 2 * sizeof(word32));
wolfSSL 4:1b0d80432c79 424 #endif
wolfSSL 4:1b0d80432c79 425
wolfSSL 4:1b0d80432c79 426 XTRANSFORM(sha, local);
wolfSSL 4:1b0d80432c79 427 #ifdef LITTLE_ENDIAN_ORDER
wolfSSL 4:1b0d80432c79 428 ByteReverseWords(sha->digest, sha->digest, SHA_DIGEST_SIZE);
wolfSSL 4:1b0d80432c79 429 #endif
wolfSSL 4:1b0d80432c79 430 XMEMCPY(hash, sha->digest, SHA_DIGEST_SIZE);
wolfSSL 4:1b0d80432c79 431
wolfSSL 4:1b0d80432c79 432 return wc_InitSha(sha); /* reset state */
wolfSSL 4:1b0d80432c79 433 }
wolfSSL 4:1b0d80432c79 434
wolfSSL 4:1b0d80432c79 435 #endif /* STM32F2_HASH */
wolfSSL 4:1b0d80432c79 436
wolfSSL 4:1b0d80432c79 437
wolfSSL 4:1b0d80432c79 438
wolfSSL 4:1b0d80432c79 439 #endif /* HAVE_FIPS */
wolfSSL 4:1b0d80432c79 440 #endif /* WOLFSSL_TI_HASH */
wolfSSL 4:1b0d80432c79 441 #endif /* NO_SHA */
wolfSSL 4:1b0d80432c79 442
wolfSSL 4:1b0d80432c79 443