MultiTech / CyaSSL

A library for setting up Secure Socket Layer (SSL) connections and verifying remote hosts using certificates. Contains only the source files for mbed platform implementation of the library.

Dependents:   HTTPClient-SSL HTTPClient-SSL HTTPClient-SSL HTTPClient-SSL

ctaocrypt/src/sha256.c@6:cf58d49e1a86, 2015-03-23 (annotated)

Committer:
Mike Fiore
Date:
Mon Mar 23 16:51:07 2015 -0500
Revision:
6:cf58d49e1a86
Parent:
0:b86d15c6ba29 
fix whitespace in sha512.c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Vanger 0:b86d15c6ba29 1 /* sha256.c
Vanger 0:b86d15c6ba29 2 *
Vanger 0:b86d15c6ba29 3 * Copyright (C) 2006-2014 wolfSSL Inc.
Vanger 0:b86d15c6ba29 4 *
Vanger 0:b86d15c6ba29 5 * This file is part of CyaSSL.
Vanger 0:b86d15c6ba29 6 *
Vanger 0:b86d15c6ba29 7 * CyaSSL is free software; you can redistribute it and/or modify
Vanger 0:b86d15c6ba29 8 * it under the terms of the GNU General Public License as published by
Vanger 0:b86d15c6ba29 9 * the Free Software Foundation; either version 2 of the License, or
Vanger 0:b86d15c6ba29 10 * (at your option) any later version.
Vanger 0:b86d15c6ba29 11 *
Vanger 0:b86d15c6ba29 12 * CyaSSL is distributed in the hope that it will be useful,
Vanger 0:b86d15c6ba29 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Vanger 0:b86d15c6ba29 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Vanger 0:b86d15c6ba29 15 * GNU General Public License for more details.
Vanger 0:b86d15c6ba29 16 *
Vanger 0:b86d15c6ba29 17 * You should have received a copy of the GNU General Public License
Vanger 0:b86d15c6ba29 18 * along with this program; if not, write to the Free Software
Vanger 0:b86d15c6ba29 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
Vanger 0:b86d15c6ba29 20 */
Vanger 0:b86d15c6ba29 21
Vanger 0:b86d15c6ba29 22
Vanger 0:b86d15c6ba29 23 /* code submitted by raphael.huck@efixo.com */
Vanger 0:b86d15c6ba29 24
Vanger 0:b86d15c6ba29 25 #ifdef HAVE_CONFIG_H
Vanger 0:b86d15c6ba29 26 #include <config.h>
Vanger 0:b86d15c6ba29 27 #endif
Vanger 0:b86d15c6ba29 28
Vanger 0:b86d15c6ba29 29 #include <cyassl/ctaocrypt/settings.h>
Vanger 0:b86d15c6ba29 30
Vanger 0:b86d15c6ba29 31 #if !defined(NO_SHA256)
Vanger 0:b86d15c6ba29 32
Vanger 0:b86d15c6ba29 33 #ifdef CYASSL_PIC32MZ_HASH
Vanger 0:b86d15c6ba29 34 #define InitSha256 InitSha256_sw
Vanger 0:b86d15c6ba29 35 #define Sha256Update Sha256Update_sw
Vanger 0:b86d15c6ba29 36 #define Sha256Final Sha256Final_sw
Vanger 0:b86d15c6ba29 37 #endif
Vanger 0:b86d15c6ba29 38
Vanger 0:b86d15c6ba29 39 #ifdef HAVE_FIPS
Vanger 0:b86d15c6ba29 40 /* set NO_WRAPPERS before headers, use direct internal f()s not wrappers */
Vanger 0:b86d15c6ba29 41 #define FIPS_NO_WRAPPERS
Vanger 0:b86d15c6ba29 42 #endif
Vanger 0:b86d15c6ba29 43
Vanger 0:b86d15c6ba29 44 #include <cyassl/ctaocrypt/sha256.h>
Vanger 0:b86d15c6ba29 45 #include <cyassl/ctaocrypt/logging.h>
Vanger 0:b86d15c6ba29 46 #include <cyassl/ctaocrypt/error-crypt.h>
Vanger 0:b86d15c6ba29 47
Vanger 0:b86d15c6ba29 48 #ifdef NO_INLINE
Vanger 0:b86d15c6ba29 49 #include <cyassl/ctaocrypt/misc.h>
Vanger 0:b86d15c6ba29 50 #else
Vanger 0:b86d15c6ba29 51 #include <ctaocrypt/src/misc.c>
Vanger 0:b86d15c6ba29 52 #endif
Vanger 0:b86d15c6ba29 53
Vanger 0:b86d15c6ba29 54 #ifdef FREESCALE_MMCAU
Vanger 0:b86d15c6ba29 55 #include "cau_api.h"
Vanger 0:b86d15c6ba29 56 #endif
Vanger 0:b86d15c6ba29 57
Vanger 0:b86d15c6ba29 58 #ifndef min
Vanger 0:b86d15c6ba29 59
Vanger 0:b86d15c6ba29 60 static INLINE word32 min(word32 a, word32 b)
Vanger 0:b86d15c6ba29 61 {
Vanger 0:b86d15c6ba29 62 return a > b ? b : a;
Vanger 0:b86d15c6ba29 63 }
Vanger 0:b86d15c6ba29 64
Vanger 0:b86d15c6ba29 65 #endif /* min */
Vanger 0:b86d15c6ba29 66
Vanger 0:b86d15c6ba29 67
Vanger 0:b86d15c6ba29 68 int InitSha256(Sha256* sha256)
Vanger 0:b86d15c6ba29 69 {
Vanger 0:b86d15c6ba29 70 #ifdef FREESCALE_MMCAU
Vanger 0:b86d15c6ba29 71 cau_sha256_initialize_output(sha256->digest);
Vanger 0:b86d15c6ba29 72 #else
Vanger 0:b86d15c6ba29 73 sha256->digest[0] = 0x6A09E667L;
Vanger 0:b86d15c6ba29 74 sha256->digest[1] = 0xBB67AE85L;
Vanger 0:b86d15c6ba29 75 sha256->digest[2] = 0x3C6EF372L;
Vanger 0:b86d15c6ba29 76 sha256->digest[3] = 0xA54FF53AL;
Vanger 0:b86d15c6ba29 77 sha256->digest[4] = 0x510E527FL;
Vanger 0:b86d15c6ba29 78 sha256->digest[5] = 0x9B05688CL;
Vanger 0:b86d15c6ba29 79 sha256->digest[6] = 0x1F83D9ABL;
Vanger 0:b86d15c6ba29 80 sha256->digest[7] = 0x5BE0CD19L;
Vanger 0:b86d15c6ba29 81 #endif
Vanger 0:b86d15c6ba29 82
Vanger 0:b86d15c6ba29 83 sha256->buffLen = 0;
Vanger 0:b86d15c6ba29 84 sha256->loLen = 0;
Vanger 0:b86d15c6ba29 85 sha256->hiLen = 0;
Vanger 0:b86d15c6ba29 86
Vanger 0:b86d15c6ba29 87 return 0;
Vanger 0:b86d15c6ba29 88 }
Vanger 0:b86d15c6ba29 89
Vanger 0:b86d15c6ba29 90 #ifdef FREESCALE_MMCAU
Vanger 0:b86d15c6ba29 91 #define XTRANSFORM(S,B) Transform((S), (B))
Vanger 0:b86d15c6ba29 92
Vanger 0:b86d15c6ba29 93 static int Transform(Sha256* sha256, byte* buf)
Vanger 0:b86d15c6ba29 94 {
Vanger 0:b86d15c6ba29 95 cau_sha256_hash_n(buf, 1, sha256->digest);
Vanger 0:b86d15c6ba29 96
Vanger 0:b86d15c6ba29 97 return 0;
Vanger 0:b86d15c6ba29 98 }
Vanger 0:b86d15c6ba29 99
Vanger 0:b86d15c6ba29 100 #else
Vanger 0:b86d15c6ba29 101 #define XTRANSFORM(S,B) Transform((S))
Vanger 0:b86d15c6ba29 102
Vanger 0:b86d15c6ba29 103 static const word32 K[64] = {
Vanger 0:b86d15c6ba29 104 0x428A2F98L, 0x71374491L, 0xB5C0FBCFL, 0xE9B5DBA5L, 0x3956C25BL,
Vanger 0:b86d15c6ba29 105 0x59F111F1L, 0x923F82A4L, 0xAB1C5ED5L, 0xD807AA98L, 0x12835B01L,
Vanger 0:b86d15c6ba29 106 0x243185BEL, 0x550C7DC3L, 0x72BE5D74L, 0x80DEB1FEL, 0x9BDC06A7L,
Vanger 0:b86d15c6ba29 107 0xC19BF174L, 0xE49B69C1L, 0xEFBE4786L, 0x0FC19DC6L, 0x240CA1CCL,
Vanger 0:b86d15c6ba29 108 0x2DE92C6FL, 0x4A7484AAL, 0x5CB0A9DCL, 0x76F988DAL, 0x983E5152L,
Vanger 0:b86d15c6ba29 109 0xA831C66DL, 0xB00327C8L, 0xBF597FC7L, 0xC6E00BF3L, 0xD5A79147L,
Vanger 0:b86d15c6ba29 110 0x06CA6351L, 0x14292967L, 0x27B70A85L, 0x2E1B2138L, 0x4D2C6DFCL,
Vanger 0:b86d15c6ba29 111 0x53380D13L, 0x650A7354L, 0x766A0ABBL, 0x81C2C92EL, 0x92722C85L,
Vanger 0:b86d15c6ba29 112 0xA2BFE8A1L, 0xA81A664BL, 0xC24B8B70L, 0xC76C51A3L, 0xD192E819L,
Vanger 0:b86d15c6ba29 113 0xD6990624L, 0xF40E3585L, 0x106AA070L, 0x19A4C116L, 0x1E376C08L,
Vanger 0:b86d15c6ba29 114 0x2748774CL, 0x34B0BCB5L, 0x391C0CB3L, 0x4ED8AA4AL, 0x5B9CCA4FL,
Vanger 0:b86d15c6ba29 115 0x682E6FF3L, 0x748F82EEL, 0x78A5636FL, 0x84C87814L, 0x8CC70208L,
Vanger 0:b86d15c6ba29 116 0x90BEFFFAL, 0xA4506CEBL, 0xBEF9A3F7L, 0xC67178F2L
Vanger 0:b86d15c6ba29 117 };
Vanger 0:b86d15c6ba29 118
Vanger 0:b86d15c6ba29 119 #define Ch(x,y,z) (z ^ (x & (y ^ z)))
Vanger 0:b86d15c6ba29 120 #define Maj(x,y,z) (((x | y) & z) | (x & y))
Vanger 0:b86d15c6ba29 121 #define S(x, n) rotrFixed(x, n)
Vanger 0:b86d15c6ba29 122 #define R(x, n) (((x)&0xFFFFFFFFU)>>(n))
Vanger 0:b86d15c6ba29 123 #define Sigma0(x) (S(x, 2) ^ S(x, 13) ^ S(x, 22))
Vanger 0:b86d15c6ba29 124 #define Sigma1(x) (S(x, 6) ^ S(x, 11) ^ S(x, 25))
Vanger 0:b86d15c6ba29 125 #define Gamma0(x) (S(x, 7) ^ S(x, 18) ^ R(x, 3))
Vanger 0:b86d15c6ba29 126 #define Gamma1(x) (S(x, 17) ^ S(x, 19) ^ R(x, 10))
Vanger 0:b86d15c6ba29 127
Vanger 0:b86d15c6ba29 128 #define RND(a,b,c,d,e,f,g,h,i) \
Vanger 0:b86d15c6ba29 129 t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
Vanger 0:b86d15c6ba29 130 t1 = Sigma0(a) + Maj(a, b, c); \
Vanger 0:b86d15c6ba29 131 d += t0; \
Vanger 0:b86d15c6ba29 132 h = t0 + t1;
Vanger 0:b86d15c6ba29 133
Vanger 0:b86d15c6ba29 134
Vanger 0:b86d15c6ba29 135 static int Transform(Sha256* sha256)
Vanger 0:b86d15c6ba29 136 {
Vanger 0:b86d15c6ba29 137 word32 S[8], t0, t1;
Vanger 0:b86d15c6ba29 138 int i;
Vanger 0:b86d15c6ba29 139
Vanger 0:b86d15c6ba29 140 #ifdef CYASSL_SMALL_STACK
Vanger 0:b86d15c6ba29 141 word32* W;
Vanger 0:b86d15c6ba29 142
Vanger 0:b86d15c6ba29 143 W = (word32*) XMALLOC(sizeof(word32) * 64, NULL, DYNAMIC_TYPE_TMP_BUFFER);
Vanger 0:b86d15c6ba29 144 if (W == NULL)
Vanger 0:b86d15c6ba29 145 return MEMORY_E;
Vanger 0:b86d15c6ba29 146 #else
Vanger 0:b86d15c6ba29 147 word32 W[64];
Vanger 0:b86d15c6ba29 148 #endif
Vanger 0:b86d15c6ba29 149
Vanger 0:b86d15c6ba29 150 /* Copy context->state[] to working vars */
Vanger 0:b86d15c6ba29 151 for (i = 0; i < 8; i++)
Vanger 0:b86d15c6ba29 152 S[i] = sha256->digest[i];
Vanger 0:b86d15c6ba29 153
Vanger 0:b86d15c6ba29 154 for (i = 0; i < 16; i++)
Vanger 0:b86d15c6ba29 155 W[i] = sha256->buffer[i];
Vanger 0:b86d15c6ba29 156
Vanger 0:b86d15c6ba29 157 for (i = 16; i < 64; i++)
Vanger 0:b86d15c6ba29 158 W[i] = Gamma1(W[i-2]) + W[i-7] + Gamma0(W[i-15]) + W[i-16];
Vanger 0:b86d15c6ba29 159
Vanger 0:b86d15c6ba29 160 for (i = 0; i < 64; i += 8) {
Vanger 0:b86d15c6ba29 161 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0);
Vanger 0:b86d15c6ba29 162 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1);
Vanger 0:b86d15c6ba29 163 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2);
Vanger 0:b86d15c6ba29 164 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3);
Vanger 0:b86d15c6ba29 165 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4);
Vanger 0:b86d15c6ba29 166 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5);
Vanger 0:b86d15c6ba29 167 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6);
Vanger 0:b86d15c6ba29 168 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7);
Vanger 0:b86d15c6ba29 169 }
Vanger 0:b86d15c6ba29 170
Vanger 0:b86d15c6ba29 171 /* Add the working vars back into digest state[] */
Vanger 0:b86d15c6ba29 172 for (i = 0; i < 8; i++) {
Vanger 0:b86d15c6ba29 173 sha256->digest[i] += S[i];
Vanger 0:b86d15c6ba29 174 }
Vanger 0:b86d15c6ba29 175
Vanger 0:b86d15c6ba29 176 #ifdef CYASSL_SMALL_STACK
Vanger 0:b86d15c6ba29 177 XFREE(W, NULL, DYNAMIC_TYPE_TMP_BUFFER);
Vanger 0:b86d15c6ba29 178 #endif
Vanger 0:b86d15c6ba29 179
Vanger 0:b86d15c6ba29 180 return 0;
Vanger 0:b86d15c6ba29 181 }
Vanger 0:b86d15c6ba29 182
Vanger 0:b86d15c6ba29 183 #endif /* FREESCALE_MMCAU */
Vanger 0:b86d15c6ba29 184
Vanger 0:b86d15c6ba29 185
Vanger 0:b86d15c6ba29 186 static INLINE void AddLength(Sha256* sha256, word32 len)
Vanger 0:b86d15c6ba29 187 {
Vanger 0:b86d15c6ba29 188 word32 tmp = sha256->loLen;
Vanger 0:b86d15c6ba29 189 if ( (sha256->loLen += len) < tmp)
Vanger 0:b86d15c6ba29 190 sha256->hiLen++; /* carry low to high */
Vanger 0:b86d15c6ba29 191 }
Vanger 0:b86d15c6ba29 192
Vanger 0:b86d15c6ba29 193
Vanger 0:b86d15c6ba29 194 int Sha256Update(Sha256* sha256, const byte* data, word32 len)
Vanger 0:b86d15c6ba29 195 {
Vanger 0:b86d15c6ba29 196 /* do block size increments */
Vanger 0:b86d15c6ba29 197 byte* local = (byte*)sha256->buffer;
Vanger 0:b86d15c6ba29 198
Vanger 0:b86d15c6ba29 199 while (len) {
Vanger 0:b86d15c6ba29 200 word32 add = min(len, SHA256_BLOCK_SIZE - sha256->buffLen);
Vanger 0:b86d15c6ba29 201 XMEMCPY(&local[sha256->buffLen], data, add);
Vanger 0:b86d15c6ba29 202
Vanger 0:b86d15c6ba29 203 sha256->buffLen += add;
Vanger 0:b86d15c6ba29 204 data += add;
Vanger 0:b86d15c6ba29 205 len -= add;
Vanger 0:b86d15c6ba29 206
Vanger 0:b86d15c6ba29 207 if (sha256->buffLen == SHA256_BLOCK_SIZE) {
Vanger 0:b86d15c6ba29 208 int ret;
Vanger 0:b86d15c6ba29 209
Vanger 0:b86d15c6ba29 210 #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
Vanger 0:b86d15c6ba29 211 ByteReverseWords(sha256->buffer, sha256->buffer,
Vanger 0:b86d15c6ba29 212 SHA256_BLOCK_SIZE);
Vanger 0:b86d15c6ba29 213 #endif
Vanger 0:b86d15c6ba29 214
Vanger 0:b86d15c6ba29 215 ret = XTRANSFORM(sha256, local);
Vanger 0:b86d15c6ba29 216 if (ret != 0)
Vanger 0:b86d15c6ba29 217 return ret;
Vanger 0:b86d15c6ba29 218
Vanger 0:b86d15c6ba29 219 AddLength(sha256, SHA256_BLOCK_SIZE);
Vanger 0:b86d15c6ba29 220 sha256->buffLen = 0;
Vanger 0:b86d15c6ba29 221 }
Vanger 0:b86d15c6ba29 222 }
Vanger 0:b86d15c6ba29 223
Vanger 0:b86d15c6ba29 224 return 0;
Vanger 0:b86d15c6ba29 225 }
Vanger 0:b86d15c6ba29 226
Vanger 0:b86d15c6ba29 227
Vanger 0:b86d15c6ba29 228 int Sha256Final(Sha256* sha256, byte* hash)
Vanger 0:b86d15c6ba29 229 {
Vanger 0:b86d15c6ba29 230 byte* local = (byte*)sha256->buffer;
Vanger 0:b86d15c6ba29 231 int ret;
Vanger 0:b86d15c6ba29 232
Vanger 0:b86d15c6ba29 233 AddLength(sha256, sha256->buffLen); /* before adding pads */
Vanger 0:b86d15c6ba29 234
Vanger 0:b86d15c6ba29 235 local[sha256->buffLen++] = 0x80; /* add 1 */
Vanger 0:b86d15c6ba29 236
Vanger 0:b86d15c6ba29 237 /* pad with zeros */
Vanger 0:b86d15c6ba29 238 if (sha256->buffLen > SHA256_PAD_SIZE) {
Vanger 0:b86d15c6ba29 239 XMEMSET(&local[sha256->buffLen], 0, SHA256_BLOCK_SIZE - sha256->buffLen);
Vanger 0:b86d15c6ba29 240 sha256->buffLen += SHA256_BLOCK_SIZE - sha256->buffLen;
Vanger 0:b86d15c6ba29 241
Vanger 0:b86d15c6ba29 242 #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
Vanger 0:b86d15c6ba29 243 ByteReverseWords(sha256->buffer, sha256->buffer, SHA256_BLOCK_SIZE);
Vanger 0:b86d15c6ba29 244 #endif
Vanger 0:b86d15c6ba29 245
Vanger 0:b86d15c6ba29 246 ret = XTRANSFORM(sha256, local);
Vanger 0:b86d15c6ba29 247 if (ret != 0)
Vanger 0:b86d15c6ba29 248 return ret;
Vanger 0:b86d15c6ba29 249
Vanger 0:b86d15c6ba29 250 sha256->buffLen = 0;
Vanger 0:b86d15c6ba29 251 }
Vanger 0:b86d15c6ba29 252 XMEMSET(&local[sha256->buffLen], 0, SHA256_PAD_SIZE - sha256->buffLen);
Vanger 0:b86d15c6ba29 253
Vanger 0:b86d15c6ba29 254 /* put lengths in bits */
Vanger 0:b86d15c6ba29 255 sha256->hiLen = (sha256->loLen >> (8*sizeof(sha256->loLen) - 3)) +
Vanger 0:b86d15c6ba29 256 (sha256->hiLen << 3);
Vanger 0:b86d15c6ba29 257 sha256->loLen = sha256->loLen << 3;
Vanger 0:b86d15c6ba29 258
Vanger 0:b86d15c6ba29 259 /* store lengths */
Vanger 0:b86d15c6ba29 260 #if defined(LITTLE_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU)
Vanger 0:b86d15c6ba29 261 ByteReverseWords(sha256->buffer, sha256->buffer, SHA256_BLOCK_SIZE);
Vanger 0:b86d15c6ba29 262 #endif
Vanger 0:b86d15c6ba29 263 /* ! length ordering dependent on digest endian type ! */
Vanger 0:b86d15c6ba29 264 XMEMCPY(&local[SHA256_PAD_SIZE], &sha256->hiLen, sizeof(word32));
Vanger 0:b86d15c6ba29 265 XMEMCPY(&local[SHA256_PAD_SIZE + sizeof(word32)], &sha256->loLen,
Vanger 0:b86d15c6ba29 266 sizeof(word32));
Vanger 0:b86d15c6ba29 267
Vanger 0:b86d15c6ba29 268 #ifdef FREESCALE_MMCAU
Vanger 0:b86d15c6ba29 269 /* Kinetis requires only these bytes reversed */
Vanger 0:b86d15c6ba29 270 ByteReverseWords(&sha256->buffer[SHA256_PAD_SIZE/sizeof(word32)],
Vanger 0:b86d15c6ba29 271 &sha256->buffer[SHA256_PAD_SIZE/sizeof(word32)],
Vanger 0:b86d15c6ba29 272 2 * sizeof(word32));
Vanger 0:b86d15c6ba29 273 #endif
Vanger 0:b86d15c6ba29 274
Vanger 0:b86d15c6ba29 275 ret = XTRANSFORM(sha256, local);
Vanger 0:b86d15c6ba29 276 if (ret != 0)
Vanger 0:b86d15c6ba29 277 return ret;
Vanger 0:b86d15c6ba29 278
Vanger 0:b86d15c6ba29 279 #ifdef LITTLE_ENDIAN_ORDER
Vanger 0:b86d15c6ba29 280 ByteReverseWords(sha256->digest, sha256->digest, SHA256_DIGEST_SIZE);
Vanger 0:b86d15c6ba29 281 #endif
Vanger 0:b86d15c6ba29 282 XMEMCPY(hash, sha256->digest, SHA256_DIGEST_SIZE);
Vanger 0:b86d15c6ba29 283
Vanger 0:b86d15c6ba29 284 return InitSha256(sha256); /* reset state */
Vanger 0:b86d15c6ba29 285 }
Vanger 0:b86d15c6ba29 286
Vanger 0:b86d15c6ba29 287
Vanger 0:b86d15c6ba29 288 int Sha256Hash(const byte* data, word32 len, byte* hash)
Vanger 0:b86d15c6ba29 289 {
Vanger 0:b86d15c6ba29 290 int ret = 0;
Vanger 0:b86d15c6ba29 291 #ifdef CYASSL_SMALL_STACK
Vanger 0:b86d15c6ba29 292 Sha256* sha256;
Vanger 0:b86d15c6ba29 293 #else
Vanger 0:b86d15c6ba29 294 Sha256 sha256[1];
Vanger 0:b86d15c6ba29 295 #endif
Vanger 0:b86d15c6ba29 296
Vanger 0:b86d15c6ba29 297 #ifdef CYASSL_SMALL_STACK
Vanger 0:b86d15c6ba29 298 sha256 = (Sha256*)XMALLOC(sizeof(Sha256), NULL, DYNAMIC_TYPE_TMP_BUFFER);
Vanger 0:b86d15c6ba29 299 if (sha256 == NULL)
Vanger 0:b86d15c6ba29 300 return MEMORY_E;
Vanger 0:b86d15c6ba29 301 #endif
Vanger 0:b86d15c6ba29 302
Vanger 0:b86d15c6ba29 303 if ((ret = InitSha256(sha256)) != 0) {
Vanger 0:b86d15c6ba29 304 CYASSL_MSG("InitSha256 failed");
Vanger 0:b86d15c6ba29 305 }
Vanger 0:b86d15c6ba29 306 else if ((ret = Sha256Update(sha256, data, len)) != 0) {
Vanger 0:b86d15c6ba29 307 CYASSL_MSG("Sha256Update failed");
Vanger 0:b86d15c6ba29 308 }
Vanger 0:b86d15c6ba29 309 else if ((ret = Sha256Final(sha256, hash)) != 0) {
Vanger 0:b86d15c6ba29 310 CYASSL_MSG("Sha256Final failed");
Vanger 0:b86d15c6ba29 311 }
Vanger 0:b86d15c6ba29 312
Vanger 0:b86d15c6ba29 313 #ifdef CYASSL_SMALL_STACK
Vanger 0:b86d15c6ba29 314 XFREE(sha256, NULL, DYNAMIC_TYPE_TMP_BUFFER);
Vanger 0:b86d15c6ba29 315 #endif
Vanger 0:b86d15c6ba29 316
Vanger 0:b86d15c6ba29 317 return ret;
Vanger 0:b86d15c6ba29 318 }
Vanger 0:b86d15c6ba29 319
Vanger 0:b86d15c6ba29 320
Vanger 0:b86d15c6ba29 321 #endif /* NO_SHA256 */
Vanger 0:b86d15c6ba29 322