Mark Radbourne / mbedtls

mbed TLS Build

Dependents:   Encrypt_Decrypt1 mbed_blink_tls encrypt encrypt

library/sha256.c@0:cdf462088d13, 2017-01-05 (annotated)

Committer:
markrad
Date:
Thu Jan 05 00:18:44 2017 +0000
Revision:
0:cdf462088d13
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
markrad 0:cdf462088d13 1 /*
markrad 0:cdf462088d13 2 * FIPS-180-2 compliant SHA-256 implementation
markrad 0:cdf462088d13 3 *
markrad 0:cdf462088d13 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
markrad 0:cdf462088d13 5 * SPDX-License-Identifier: Apache-2.0
markrad 0:cdf462088d13 6 *
markrad 0:cdf462088d13 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
markrad 0:cdf462088d13 8 * not use this file except in compliance with the License.
markrad 0:cdf462088d13 9 * You may obtain a copy of the License at
markrad 0:cdf462088d13 10 *
markrad 0:cdf462088d13 11 * http://www.apache.org/licenses/LICENSE-2.0
markrad 0:cdf462088d13 12 *
markrad 0:cdf462088d13 13 * Unless required by applicable law or agreed to in writing, software
markrad 0:cdf462088d13 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
markrad 0:cdf462088d13 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
markrad 0:cdf462088d13 16 * See the License for the specific language governing permissions and
markrad 0:cdf462088d13 17 * limitations under the License.
markrad 0:cdf462088d13 18 *
markrad 0:cdf462088d13 19 * This file is part of mbed TLS (https://tls.mbed.org)
markrad 0:cdf462088d13 20 */
markrad 0:cdf462088d13 21 /*
markrad 0:cdf462088d13 22 * The SHA-256 Secure Hash Standard was published by NIST in 2002.
markrad 0:cdf462088d13 23 *
markrad 0:cdf462088d13 24 * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
markrad 0:cdf462088d13 25 */
markrad 0:cdf462088d13 26
markrad 0:cdf462088d13 27 #if !defined(MBEDTLS_CONFIG_FILE)
markrad 0:cdf462088d13 28 #include "mbedtls/config.h"
markrad 0:cdf462088d13 29 #else
markrad 0:cdf462088d13 30 #include MBEDTLS_CONFIG_FILE
markrad 0:cdf462088d13 31 #endif
markrad 0:cdf462088d13 32
markrad 0:cdf462088d13 33 #if defined(MBEDTLS_SHA256_C)
markrad 0:cdf462088d13 34
markrad 0:cdf462088d13 35 #include "mbedtls/sha256.h"
markrad 0:cdf462088d13 36
markrad 0:cdf462088d13 37 #include <string.h>
markrad 0:cdf462088d13 38
markrad 0:cdf462088d13 39 #if defined(MBEDTLS_SELF_TEST)
markrad 0:cdf462088d13 40 #if defined(MBEDTLS_PLATFORM_C)
markrad 0:cdf462088d13 41 #include "mbedtls/platform.h"
markrad 0:cdf462088d13 42 #else
markrad 0:cdf462088d13 43 #include <stdio.h>
markrad 0:cdf462088d13 44 #include <stdlib.h>
markrad 0:cdf462088d13 45 #define mbedtls_printf printf
markrad 0:cdf462088d13 46 #define mbedtls_calloc calloc
markrad 0:cdf462088d13 47 #define mbedtls_free free
markrad 0:cdf462088d13 48 #endif /* MBEDTLS_PLATFORM_C */
markrad 0:cdf462088d13 49 #endif /* MBEDTLS_SELF_TEST */
markrad 0:cdf462088d13 50
markrad 0:cdf462088d13 51 #if !defined(MBEDTLS_SHA256_ALT)
markrad 0:cdf462088d13 52
markrad 0:cdf462088d13 53 /* Implementation that should never be optimized out by the compiler */
markrad 0:cdf462088d13 54 static void mbedtls_zeroize( void *v, size_t n ) {
markrad 0:cdf462088d13 55 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
markrad 0:cdf462088d13 56 }
markrad 0:cdf462088d13 57
markrad 0:cdf462088d13 58 /*
markrad 0:cdf462088d13 59 * 32-bit integer manipulation macros (big endian)
markrad 0:cdf462088d13 60 */
markrad 0:cdf462088d13 61 #ifndef GET_UINT32_BE
markrad 0:cdf462088d13 62 #define GET_UINT32_BE(n,b,i) \
markrad 0:cdf462088d13 63 do { \
markrad 0:cdf462088d13 64 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
markrad 0:cdf462088d13 65 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
markrad 0:cdf462088d13 66 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
markrad 0:cdf462088d13 67 | ( (uint32_t) (b)[(i) + 3] ); \
markrad 0:cdf462088d13 68 } while( 0 )
markrad 0:cdf462088d13 69 #endif
markrad 0:cdf462088d13 70
markrad 0:cdf462088d13 71 #ifndef PUT_UINT32_BE
markrad 0:cdf462088d13 72 #define PUT_UINT32_BE(n,b,i) \
markrad 0:cdf462088d13 73 do { \
markrad 0:cdf462088d13 74 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
markrad 0:cdf462088d13 75 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
markrad 0:cdf462088d13 76 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
markrad 0:cdf462088d13 77 (b)[(i) + 3] = (unsigned char) ( (n) ); \
markrad 0:cdf462088d13 78 } while( 0 )
markrad 0:cdf462088d13 79 #endif
markrad 0:cdf462088d13 80
markrad 0:cdf462088d13 81 void mbedtls_sha256_init( mbedtls_sha256_context *ctx )
markrad 0:cdf462088d13 82 {
markrad 0:cdf462088d13 83 memset( ctx, 0, sizeof( mbedtls_sha256_context ) );
markrad 0:cdf462088d13 84 }
markrad 0:cdf462088d13 85
markrad 0:cdf462088d13 86 void mbedtls_sha256_free( mbedtls_sha256_context *ctx )
markrad 0:cdf462088d13 87 {
markrad 0:cdf462088d13 88 if( ctx == NULL )
markrad 0:cdf462088d13 89 return;
markrad 0:cdf462088d13 90
markrad 0:cdf462088d13 91 mbedtls_zeroize( ctx, sizeof( mbedtls_sha256_context ) );
markrad 0:cdf462088d13 92 }
markrad 0:cdf462088d13 93
markrad 0:cdf462088d13 94 void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
markrad 0:cdf462088d13 95 const mbedtls_sha256_context *src )
markrad 0:cdf462088d13 96 {
markrad 0:cdf462088d13 97 *dst = *src;
markrad 0:cdf462088d13 98 }
markrad 0:cdf462088d13 99
markrad 0:cdf462088d13 100 /*
markrad 0:cdf462088d13 101 * SHA-256 context setup
markrad 0:cdf462088d13 102 */
markrad 0:cdf462088d13 103 void mbedtls_sha256_starts( mbedtls_sha256_context *ctx, int is224 )
markrad 0:cdf462088d13 104 {
markrad 0:cdf462088d13 105 ctx->total[0] = 0;
markrad 0:cdf462088d13 106 ctx->total[1] = 0;
markrad 0:cdf462088d13 107
markrad 0:cdf462088d13 108 if( is224 == 0 )
markrad 0:cdf462088d13 109 {
markrad 0:cdf462088d13 110 /* SHA-256 */
markrad 0:cdf462088d13 111 ctx->state[0] = 0x6A09E667;
markrad 0:cdf462088d13 112 ctx->state[1] = 0xBB67AE85;
markrad 0:cdf462088d13 113 ctx->state[2] = 0x3C6EF372;
markrad 0:cdf462088d13 114 ctx->state[3] = 0xA54FF53A;
markrad 0:cdf462088d13 115 ctx->state[4] = 0x510E527F;
markrad 0:cdf462088d13 116 ctx->state[5] = 0x9B05688C;
markrad 0:cdf462088d13 117 ctx->state[6] = 0x1F83D9AB;
markrad 0:cdf462088d13 118 ctx->state[7] = 0x5BE0CD19;
markrad 0:cdf462088d13 119 }
markrad 0:cdf462088d13 120 else
markrad 0:cdf462088d13 121 {
markrad 0:cdf462088d13 122 /* SHA-224 */
markrad 0:cdf462088d13 123 ctx->state[0] = 0xC1059ED8;
markrad 0:cdf462088d13 124 ctx->state[1] = 0x367CD507;
markrad 0:cdf462088d13 125 ctx->state[2] = 0x3070DD17;
markrad 0:cdf462088d13 126 ctx->state[3] = 0xF70E5939;
markrad 0:cdf462088d13 127 ctx->state[4] = 0xFFC00B31;
markrad 0:cdf462088d13 128 ctx->state[5] = 0x68581511;
markrad 0:cdf462088d13 129 ctx->state[6] = 0x64F98FA7;
markrad 0:cdf462088d13 130 ctx->state[7] = 0xBEFA4FA4;
markrad 0:cdf462088d13 131 }
markrad 0:cdf462088d13 132
markrad 0:cdf462088d13 133 ctx->is224 = is224;
markrad 0:cdf462088d13 134 }
markrad 0:cdf462088d13 135
markrad 0:cdf462088d13 136 #if !defined(MBEDTLS_SHA256_PROCESS_ALT)
markrad 0:cdf462088d13 137 static const uint32_t K[] =
markrad 0:cdf462088d13 138 {
markrad 0:cdf462088d13 139 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
markrad 0:cdf462088d13 140 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
markrad 0:cdf462088d13 141 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
markrad 0:cdf462088d13 142 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
markrad 0:cdf462088d13 143 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
markrad 0:cdf462088d13 144 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
markrad 0:cdf462088d13 145 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
markrad 0:cdf462088d13 146 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
markrad 0:cdf462088d13 147 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
markrad 0:cdf462088d13 148 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
markrad 0:cdf462088d13 149 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
markrad 0:cdf462088d13 150 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
markrad 0:cdf462088d13 151 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
markrad 0:cdf462088d13 152 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
markrad 0:cdf462088d13 153 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
markrad 0:cdf462088d13 154 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2,
markrad 0:cdf462088d13 155 };
markrad 0:cdf462088d13 156
markrad 0:cdf462088d13 157 #define SHR(x,n) ((x & 0xFFFFFFFF) >> n)
markrad 0:cdf462088d13 158 #define ROTR(x,n) (SHR(x,n) | (x << (32 - n)))
markrad 0:cdf462088d13 159
markrad 0:cdf462088d13 160 #define S0(x) (ROTR(x, 7) ^ ROTR(x,18) ^ SHR(x, 3))
markrad 0:cdf462088d13 161 #define S1(x) (ROTR(x,17) ^ ROTR(x,19) ^ SHR(x,10))
markrad 0:cdf462088d13 162
markrad 0:cdf462088d13 163 #define S2(x) (ROTR(x, 2) ^ ROTR(x,13) ^ ROTR(x,22))
markrad 0:cdf462088d13 164 #define S3(x) (ROTR(x, 6) ^ ROTR(x,11) ^ ROTR(x,25))
markrad 0:cdf462088d13 165
markrad 0:cdf462088d13 166 #define F0(x,y,z) ((x & y) | (z & (x | y)))
markrad 0:cdf462088d13 167 #define F1(x,y,z) (z ^ (x & (y ^ z)))
markrad 0:cdf462088d13 168
markrad 0:cdf462088d13 169 #define R(t) \
markrad 0:cdf462088d13 170 ( \
markrad 0:cdf462088d13 171 W[t] = S1(W[t - 2]) + W[t - 7] + \
markrad 0:cdf462088d13 172 S0(W[t - 15]) + W[t - 16] \
markrad 0:cdf462088d13 173 )
markrad 0:cdf462088d13 174
markrad 0:cdf462088d13 175 #define P(a,b,c,d,e,f,g,h,x,K) \
markrad 0:cdf462088d13 176 { \
markrad 0:cdf462088d13 177 temp1 = h + S3(e) + F1(e,f,g) + K + x; \
markrad 0:cdf462088d13 178 temp2 = S2(a) + F0(a,b,c); \
markrad 0:cdf462088d13 179 d += temp1; h = temp1 + temp2; \
markrad 0:cdf462088d13 180 }
markrad 0:cdf462088d13 181
markrad 0:cdf462088d13 182 void mbedtls_sha256_process( mbedtls_sha256_context *ctx, const unsigned char data[64] )
markrad 0:cdf462088d13 183 {
markrad 0:cdf462088d13 184 uint32_t temp1, temp2, W[64];
markrad 0:cdf462088d13 185 uint32_t A[8];
markrad 0:cdf462088d13 186 unsigned int i;
markrad 0:cdf462088d13 187
markrad 0:cdf462088d13 188 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 189 A[i] = ctx->state[i];
markrad 0:cdf462088d13 190
markrad 0:cdf462088d13 191 #if defined(MBEDTLS_SHA256_SMALLER)
markrad 0:cdf462088d13 192 for( i = 0; i < 64; i++ )
markrad 0:cdf462088d13 193 {
markrad 0:cdf462088d13 194 if( i < 16 )
markrad 0:cdf462088d13 195 GET_UINT32_BE( W[i], data, 4 * i );
markrad 0:cdf462088d13 196 else
markrad 0:cdf462088d13 197 R( i );
markrad 0:cdf462088d13 198
markrad 0:cdf462088d13 199 P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i], K[i] );
markrad 0:cdf462088d13 200
markrad 0:cdf462088d13 201 temp1 = A[7]; A[7] = A[6]; A[6] = A[5]; A[5] = A[4]; A[4] = A[3];
markrad 0:cdf462088d13 202 A[3] = A[2]; A[2] = A[1]; A[1] = A[0]; A[0] = temp1;
markrad 0:cdf462088d13 203 }
markrad 0:cdf462088d13 204 #else /* MBEDTLS_SHA256_SMALLER */
markrad 0:cdf462088d13 205 for( i = 0; i < 16; i++ )
markrad 0:cdf462088d13 206 GET_UINT32_BE( W[i], data, 4 * i );
markrad 0:cdf462088d13 207
markrad 0:cdf462088d13 208 for( i = 0; i < 16; i += 8 )
markrad 0:cdf462088d13 209 {
markrad 0:cdf462088d13 210 P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i+0], K[i+0] );
markrad 0:cdf462088d13 211 P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], W[i+1], K[i+1] );
markrad 0:cdf462088d13 212 P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], W[i+2], K[i+2] );
markrad 0:cdf462088d13 213 P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], W[i+3], K[i+3] );
markrad 0:cdf462088d13 214 P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], W[i+4], K[i+4] );
markrad 0:cdf462088d13 215 P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], W[i+5], K[i+5] );
markrad 0:cdf462088d13 216 P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], W[i+6], K[i+6] );
markrad 0:cdf462088d13 217 P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], W[i+7], K[i+7] );
markrad 0:cdf462088d13 218 }
markrad 0:cdf462088d13 219
markrad 0:cdf462088d13 220 for( i = 16; i < 64; i += 8 )
markrad 0:cdf462088d13 221 {
markrad 0:cdf462088d13 222 P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], R(i+0), K[i+0] );
markrad 0:cdf462088d13 223 P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], R(i+1), K[i+1] );
markrad 0:cdf462088d13 224 P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], R(i+2), K[i+2] );
markrad 0:cdf462088d13 225 P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], R(i+3), K[i+3] );
markrad 0:cdf462088d13 226 P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], R(i+4), K[i+4] );
markrad 0:cdf462088d13 227 P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], R(i+5), K[i+5] );
markrad 0:cdf462088d13 228 P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], R(i+6), K[i+6] );
markrad 0:cdf462088d13 229 P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], R(i+7), K[i+7] );
markrad 0:cdf462088d13 230 }
markrad 0:cdf462088d13 231 #endif /* MBEDTLS_SHA256_SMALLER */
markrad 0:cdf462088d13 232
markrad 0:cdf462088d13 233 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 234 ctx->state[i] += A[i];
markrad 0:cdf462088d13 235 }
markrad 0:cdf462088d13 236 #endif /* !MBEDTLS_SHA256_PROCESS_ALT */
markrad 0:cdf462088d13 237
markrad 0:cdf462088d13 238 /*
markrad 0:cdf462088d13 239 * SHA-256 process buffer
markrad 0:cdf462088d13 240 */
markrad 0:cdf462088d13 241 void mbedtls_sha256_update( mbedtls_sha256_context *ctx, const unsigned char *input,
markrad 0:cdf462088d13 242 size_t ilen )
markrad 0:cdf462088d13 243 {
markrad 0:cdf462088d13 244 size_t fill;
markrad 0:cdf462088d13 245 uint32_t left;
markrad 0:cdf462088d13 246
markrad 0:cdf462088d13 247 if( ilen == 0 )
markrad 0:cdf462088d13 248 return;
markrad 0:cdf462088d13 249
markrad 0:cdf462088d13 250 left = ctx->total[0] & 0x3F;
markrad 0:cdf462088d13 251 fill = 64 - left;
markrad 0:cdf462088d13 252
markrad 0:cdf462088d13 253 ctx->total[0] += (uint32_t) ilen;
markrad 0:cdf462088d13 254 ctx->total[0] &= 0xFFFFFFFF;
markrad 0:cdf462088d13 255
markrad 0:cdf462088d13 256 if( ctx->total[0] < (uint32_t) ilen )
markrad 0:cdf462088d13 257 ctx->total[1]++;
markrad 0:cdf462088d13 258
markrad 0:cdf462088d13 259 if( left && ilen >= fill )
markrad 0:cdf462088d13 260 {
markrad 0:cdf462088d13 261 memcpy( (void *) (ctx->buffer + left), input, fill );
markrad 0:cdf462088d13 262 mbedtls_sha256_process( ctx, ctx->buffer );
markrad 0:cdf462088d13 263 input += fill;
markrad 0:cdf462088d13 264 ilen -= fill;
markrad 0:cdf462088d13 265 left = 0;
markrad 0:cdf462088d13 266 }
markrad 0:cdf462088d13 267
markrad 0:cdf462088d13 268 while( ilen >= 64 )
markrad 0:cdf462088d13 269 {
markrad 0:cdf462088d13 270 mbedtls_sha256_process( ctx, input );
markrad 0:cdf462088d13 271 input += 64;
markrad 0:cdf462088d13 272 ilen -= 64;
markrad 0:cdf462088d13 273 }
markrad 0:cdf462088d13 274
markrad 0:cdf462088d13 275 if( ilen > 0 )
markrad 0:cdf462088d13 276 memcpy( (void *) (ctx->buffer + left), input, ilen );
markrad 0:cdf462088d13 277 }
markrad 0:cdf462088d13 278
markrad 0:cdf462088d13 279 static const unsigned char sha256_padding[64] =
markrad 0:cdf462088d13 280 {
markrad 0:cdf462088d13 281 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
markrad 0:cdf462088d13 282 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
markrad 0:cdf462088d13 283 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
markrad 0:cdf462088d13 284 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
markrad 0:cdf462088d13 285 };
markrad 0:cdf462088d13 286
markrad 0:cdf462088d13 287 /*
markrad 0:cdf462088d13 288 * SHA-256 final digest
markrad 0:cdf462088d13 289 */
markrad 0:cdf462088d13 290 void mbedtls_sha256_finish( mbedtls_sha256_context *ctx, unsigned char output[32] )
markrad 0:cdf462088d13 291 {
markrad 0:cdf462088d13 292 uint32_t last, padn;
markrad 0:cdf462088d13 293 uint32_t high, low;
markrad 0:cdf462088d13 294 unsigned char msglen[8];
markrad 0:cdf462088d13 295
markrad 0:cdf462088d13 296 high = ( ctx->total[0] >> 29 )
markrad 0:cdf462088d13 297 | ( ctx->total[1] << 3 );
markrad 0:cdf462088d13 298 low = ( ctx->total[0] << 3 );
markrad 0:cdf462088d13 299
markrad 0:cdf462088d13 300 PUT_UINT32_BE( high, msglen, 0 );
markrad 0:cdf462088d13 301 PUT_UINT32_BE( low, msglen, 4 );
markrad 0:cdf462088d13 302
markrad 0:cdf462088d13 303 last = ctx->total[0] & 0x3F;
markrad 0:cdf462088d13 304 padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
markrad 0:cdf462088d13 305
markrad 0:cdf462088d13 306 mbedtls_sha256_update( ctx, sha256_padding, padn );
markrad 0:cdf462088d13 307 mbedtls_sha256_update( ctx, msglen, 8 );
markrad 0:cdf462088d13 308
markrad 0:cdf462088d13 309 PUT_UINT32_BE( ctx->state[0], output, 0 );
markrad 0:cdf462088d13 310 PUT_UINT32_BE( ctx->state[1], output, 4 );
markrad 0:cdf462088d13 311 PUT_UINT32_BE( ctx->state[2], output, 8 );
markrad 0:cdf462088d13 312 PUT_UINT32_BE( ctx->state[3], output, 12 );
markrad 0:cdf462088d13 313 PUT_UINT32_BE( ctx->state[4], output, 16 );
markrad 0:cdf462088d13 314 PUT_UINT32_BE( ctx->state[5], output, 20 );
markrad 0:cdf462088d13 315 PUT_UINT32_BE( ctx->state[6], output, 24 );
markrad 0:cdf462088d13 316
markrad 0:cdf462088d13 317 if( ctx->is224 == 0 )
markrad 0:cdf462088d13 318 PUT_UINT32_BE( ctx->state[7], output, 28 );
markrad 0:cdf462088d13 319 }
markrad 0:cdf462088d13 320
markrad 0:cdf462088d13 321 #endif /* !MBEDTLS_SHA256_ALT */
markrad 0:cdf462088d13 322
markrad 0:cdf462088d13 323 /*
markrad 0:cdf462088d13 324 * output = SHA-256( input buffer )
markrad 0:cdf462088d13 325 */
markrad 0:cdf462088d13 326 void mbedtls_sha256( const unsigned char *input, size_t ilen,
markrad 0:cdf462088d13 327 unsigned char output[32], int is224 )
markrad 0:cdf462088d13 328 {
markrad 0:cdf462088d13 329 mbedtls_sha256_context ctx;
markrad 0:cdf462088d13 330
markrad 0:cdf462088d13 331 mbedtls_sha256_init( &ctx );
markrad 0:cdf462088d13 332 mbedtls_sha256_starts( &ctx, is224 );
markrad 0:cdf462088d13 333 mbedtls_sha256_update( &ctx, input, ilen );
markrad 0:cdf462088d13 334 mbedtls_sha256_finish( &ctx, output );
markrad 0:cdf462088d13 335 mbedtls_sha256_free( &ctx );
markrad 0:cdf462088d13 336 }
markrad 0:cdf462088d13 337
markrad 0:cdf462088d13 338 #if defined(MBEDTLS_SELF_TEST)
markrad 0:cdf462088d13 339 /*
markrad 0:cdf462088d13 340 * FIPS-180-2 test vectors
markrad 0:cdf462088d13 341 */
markrad 0:cdf462088d13 342 static const unsigned char sha256_test_buf[3][57] =
markrad 0:cdf462088d13 343 {
markrad 0:cdf462088d13 344 { "abc" },
markrad 0:cdf462088d13 345 { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
markrad 0:cdf462088d13 346 { "" }
markrad 0:cdf462088d13 347 };
markrad 0:cdf462088d13 348
markrad 0:cdf462088d13 349 static const int sha256_test_buflen[3] =
markrad 0:cdf462088d13 350 {
markrad 0:cdf462088d13 351 3, 56, 1000
markrad 0:cdf462088d13 352 };
markrad 0:cdf462088d13 353
markrad 0:cdf462088d13 354 static const unsigned char sha256_test_sum[6][32] =
markrad 0:cdf462088d13 355 {
markrad 0:cdf462088d13 356 /*
markrad 0:cdf462088d13 357 * SHA-224 test vectors
markrad 0:cdf462088d13 358 */
markrad 0:cdf462088d13 359 { 0x23, 0x09, 0x7D, 0x22, 0x34, 0x05, 0xD8, 0x22,
markrad 0:cdf462088d13 360 0x86, 0x42, 0xA4, 0x77, 0xBD, 0xA2, 0x55, 0xB3,
markrad 0:cdf462088d13 361 0x2A, 0xAD, 0xBC, 0xE4, 0xBD, 0xA0, 0xB3, 0xF7,
markrad 0:cdf462088d13 362 0xE3, 0x6C, 0x9D, 0xA7 },
markrad 0:cdf462088d13 363 { 0x75, 0x38, 0x8B, 0x16, 0x51, 0x27, 0x76, 0xCC,
markrad 0:cdf462088d13 364 0x5D, 0xBA, 0x5D, 0xA1, 0xFD, 0x89, 0x01, 0x50,
markrad 0:cdf462088d13 365 0xB0, 0xC6, 0x45, 0x5C, 0xB4, 0xF5, 0x8B, 0x19,
markrad 0:cdf462088d13 366 0x52, 0x52, 0x25, 0x25 },
markrad 0:cdf462088d13 367 { 0x20, 0x79, 0x46, 0x55, 0x98, 0x0C, 0x91, 0xD8,
markrad 0:cdf462088d13 368 0xBB, 0xB4, 0xC1, 0xEA, 0x97, 0x61, 0x8A, 0x4B,
markrad 0:cdf462088d13 369 0xF0, 0x3F, 0x42, 0x58, 0x19, 0x48, 0xB2, 0xEE,
markrad 0:cdf462088d13 370 0x4E, 0xE7, 0xAD, 0x67 },
markrad 0:cdf462088d13 371
markrad 0:cdf462088d13 372 /*
markrad 0:cdf462088d13 373 * SHA-256 test vectors
markrad 0:cdf462088d13 374 */
markrad 0:cdf462088d13 375 { 0xBA, 0x78, 0x16, 0xBF, 0x8F, 0x01, 0xCF, 0xEA,
markrad 0:cdf462088d13 376 0x41, 0x41, 0x40, 0xDE, 0x5D, 0xAE, 0x22, 0x23,
markrad 0:cdf462088d13 377 0xB0, 0x03, 0x61, 0xA3, 0x96, 0x17, 0x7A, 0x9C,
markrad 0:cdf462088d13 378 0xB4, 0x10, 0xFF, 0x61, 0xF2, 0x00, 0x15, 0xAD },
markrad 0:cdf462088d13 379 { 0x24, 0x8D, 0x6A, 0x61, 0xD2, 0x06, 0x38, 0xB8,
markrad 0:cdf462088d13 380 0xE5, 0xC0, 0x26, 0x93, 0x0C, 0x3E, 0x60, 0x39,
markrad 0:cdf462088d13 381 0xA3, 0x3C, 0xE4, 0x59, 0x64, 0xFF, 0x21, 0x67,
markrad 0:cdf462088d13 382 0xF6, 0xEC, 0xED, 0xD4, 0x19, 0xDB, 0x06, 0xC1 },
markrad 0:cdf462088d13 383 { 0xCD, 0xC7, 0x6E, 0x5C, 0x99, 0x14, 0xFB, 0x92,
markrad 0:cdf462088d13 384 0x81, 0xA1, 0xC7, 0xE2, 0x84, 0xD7, 0x3E, 0x67,
markrad 0:cdf462088d13 385 0xF1, 0x80, 0x9A, 0x48, 0xA4, 0x97, 0x20, 0x0E,
markrad 0:cdf462088d13 386 0x04, 0x6D, 0x39, 0xCC, 0xC7, 0x11, 0x2C, 0xD0 }
markrad 0:cdf462088d13 387 };
markrad 0:cdf462088d13 388
markrad 0:cdf462088d13 389 /*
markrad 0:cdf462088d13 390 * Checkup routine
markrad 0:cdf462088d13 391 */
markrad 0:cdf462088d13 392 int mbedtls_sha256_self_test( int verbose )
markrad 0:cdf462088d13 393 {
markrad 0:cdf462088d13 394 int i, j, k, buflen, ret = 0;
markrad 0:cdf462088d13 395 unsigned char *buf;
markrad 0:cdf462088d13 396 unsigned char sha256sum[32];
markrad 0:cdf462088d13 397 mbedtls_sha256_context ctx;
markrad 0:cdf462088d13 398
markrad 0:cdf462088d13 399 buf = mbedtls_calloc( 1024, sizeof(unsigned char) );
markrad 0:cdf462088d13 400 if( NULL == buf )
markrad 0:cdf462088d13 401 {
markrad 0:cdf462088d13 402 if( verbose != 0 )
markrad 0:cdf462088d13 403 mbedtls_printf( "Buffer allocation failed\n" );
markrad 0:cdf462088d13 404
markrad 0:cdf462088d13 405 return( 1 );
markrad 0:cdf462088d13 406 }
markrad 0:cdf462088d13 407
markrad 0:cdf462088d13 408 mbedtls_sha256_init( &ctx );
markrad 0:cdf462088d13 409
markrad 0:cdf462088d13 410 for( i = 0; i < 6; i++ )
markrad 0:cdf462088d13 411 {
markrad 0:cdf462088d13 412 j = i % 3;
markrad 0:cdf462088d13 413 k = i < 3;
markrad 0:cdf462088d13 414
markrad 0:cdf462088d13 415 if( verbose != 0 )
markrad 0:cdf462088d13 416 mbedtls_printf( " SHA-%d test #%d: ", 256 - k * 32, j + 1 );
markrad 0:cdf462088d13 417
markrad 0:cdf462088d13 418 mbedtls_sha256_starts( &ctx, k );
markrad 0:cdf462088d13 419
markrad 0:cdf462088d13 420 if( j == 2 )
markrad 0:cdf462088d13 421 {
markrad 0:cdf462088d13 422 memset( buf, 'a', buflen = 1000 );
markrad 0:cdf462088d13 423
markrad 0:cdf462088d13 424 for( j = 0; j < 1000; j++ )
markrad 0:cdf462088d13 425 mbedtls_sha256_update( &ctx, buf, buflen );
markrad 0:cdf462088d13 426 }
markrad 0:cdf462088d13 427 else
markrad 0:cdf462088d13 428 mbedtls_sha256_update( &ctx, sha256_test_buf[j],
markrad 0:cdf462088d13 429 sha256_test_buflen[j] );
markrad 0:cdf462088d13 430
markrad 0:cdf462088d13 431 mbedtls_sha256_finish( &ctx, sha256sum );
markrad 0:cdf462088d13 432
markrad 0:cdf462088d13 433 if( memcmp( sha256sum, sha256_test_sum[i], 32 - k * 4 ) != 0 )
markrad 0:cdf462088d13 434 {
markrad 0:cdf462088d13 435 if( verbose != 0 )
markrad 0:cdf462088d13 436 mbedtls_printf( "failed\n" );
markrad 0:cdf462088d13 437
markrad 0:cdf462088d13 438 ret = 1;
markrad 0:cdf462088d13 439 goto exit;
markrad 0:cdf462088d13 440 }
markrad 0:cdf462088d13 441
markrad 0:cdf462088d13 442 if( verbose != 0 )
markrad 0:cdf462088d13 443 mbedtls_printf( "passed\n" );
markrad 0:cdf462088d13 444 }
markrad 0:cdf462088d13 445
markrad 0:cdf462088d13 446 if( verbose != 0 )
markrad 0:cdf462088d13 447 mbedtls_printf( "\n" );
markrad 0:cdf462088d13 448
markrad 0:cdf462088d13 449 exit:
markrad 0:cdf462088d13 450 mbedtls_sha256_free( &ctx );
markrad 0:cdf462088d13 451 mbedtls_free( buf );
markrad 0:cdf462088d13 452
markrad 0:cdf462088d13 453 return( ret );
markrad 0:cdf462088d13 454 }
markrad 0:cdf462088d13 455
markrad 0:cdf462088d13 456 #endif /* MBEDTLS_SELF_TEST */
markrad 0:cdf462088d13 457
markrad 0:cdf462088d13 458 #endif /* MBEDTLS_SHA256_C */