1 | /*
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2 | * FIPS-180-2 compliant SHA-256 implementation
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3 | *
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4 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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5 | * SPDX-License-Identifier: Apache-2.0
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6 | *
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7 | * Licensed under the Apache License, Version 2.0 (the "License"); you may
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8 | * not use this file except in compliance with the License.
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9 | * You may obtain a copy of the License at
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10 | *
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11 | * http://www.apache.org/licenses/LICENSE-2.0
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12 | *
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13 | * Unless required by applicable law or agreed to in writing, software
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14 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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15 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 | * See the License for the specific language governing permissions and
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17 | * limitations under the License.
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18 | *
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19 | * This file is part of mbed TLS (https://tls.mbed.org)
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20 | */
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21 | /*
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22 | * The SHA-256 Secure Hash Standard was published by NIST in 2002.
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23 | *
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24 | * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
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25 | */
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26 |
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27 | #if !defined(MBEDTLS_CONFIG_FILE)
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28 | #include "mbedtls/config.h"
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29 | #else
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30 | #include MBEDTLS_CONFIG_FILE
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31 | #endif
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32 |
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33 | #if defined(MBEDTLS_SHA256_C)
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34 |
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35 | #include "mbedtls/sha256.h"
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36 | #include "mbedtls/platform_util.h"
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37 |
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38 | #include <string.h>
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39 |
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40 | #if defined(MBEDTLS_SELF_TEST)
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41 | #if defined(MBEDTLS_PLATFORM_C)
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42 | #include "mbedtls/platform.h"
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43 | #else
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44 | #include <stdio.h>
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45 | #include <stdlib.h>
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46 | #define mbedtls_printf printf
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47 | #define mbedtls_calloc calloc
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48 | #define mbedtls_free free
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49 | #endif /* MBEDTLS_PLATFORM_C */
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50 | #endif /* MBEDTLS_SELF_TEST */
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51 |
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52 | #define SHA256_VALIDATE_RET(cond) \
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53 | MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA256_BAD_INPUT_DATA )
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54 | #define SHA256_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond )
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55 |
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56 | #if !defined(MBEDTLS_SHA256_ALT)
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57 |
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58 | /*
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59 | * 32-bit integer manipulation macros (big endian)
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60 | */
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61 | #ifndef GET_UINT32_BE
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62 | #define GET_UINT32_BE(n,b,i) \
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63 | do { \
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64 | (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
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65 | | ( (uint32_t) (b)[(i) + 1] << 16 ) \
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66 | | ( (uint32_t) (b)[(i) + 2] << 8 ) \
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67 | | ( (uint32_t) (b)[(i) + 3] ); \
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68 | } while( 0 )
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69 | #endif
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70 |
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71 | #ifndef PUT_UINT32_BE
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72 | #define PUT_UINT32_BE(n,b,i) \
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73 | do { \
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74 | (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
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75 | (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
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76 | (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
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77 | (b)[(i) + 3] = (unsigned char) ( (n) ); \
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78 | } while( 0 )
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79 | #endif
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80 |
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81 | void mbedtls_sha256_init( mbedtls_sha256_context *ctx )
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82 | {
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83 | SHA256_VALIDATE( ctx != NULL );
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84 |
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85 | memset( ctx, 0, sizeof( mbedtls_sha256_context ) );
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86 | }
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87 |
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88 | void mbedtls_sha256_free( mbedtls_sha256_context *ctx )
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89 | {
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90 | if( ctx == NULL )
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91 | return;
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92 |
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93 | mbedtls_platform_zeroize( ctx, sizeof( mbedtls_sha256_context ) );
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94 | }
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95 |
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96 | void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
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97 | const mbedtls_sha256_context *src )
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98 | {
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99 | SHA256_VALIDATE( dst != NULL );
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100 | SHA256_VALIDATE( src != NULL );
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101 |
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102 | *dst = *src;
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103 | }
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104 |
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105 | /*
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106 | * SHA-256 context setup
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107 | */
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108 | int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 )
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109 | {
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110 | SHA256_VALIDATE_RET( ctx != NULL );
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111 | SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 );
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112 |
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113 | ctx->total[0] = 0;
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114 | ctx->total[1] = 0;
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115 |
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116 | if( is224 == 0 )
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117 | {
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118 | /* SHA-256 */
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119 | ctx->state[0] = 0x6A09E667;
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120 | ctx->state[1] = 0xBB67AE85;
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121 | ctx->state[2] = 0x3C6EF372;
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122 | ctx->state[3] = 0xA54FF53A;
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123 | ctx->state[4] = 0x510E527F;
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124 | ctx->state[5] = 0x9B05688C;
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125 | ctx->state[6] = 0x1F83D9AB;
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126 | ctx->state[7] = 0x5BE0CD19;
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127 | }
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128 | else
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129 | {
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130 | /* SHA-224 */
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131 | ctx->state[0] = 0xC1059ED8;
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132 | ctx->state[1] = 0x367CD507;
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133 | ctx->state[2] = 0x3070DD17;
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134 | ctx->state[3] = 0xF70E5939;
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135 | ctx->state[4] = 0xFFC00B31;
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136 | ctx->state[5] = 0x68581511;
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137 | ctx->state[6] = 0x64F98FA7;
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138 | ctx->state[7] = 0xBEFA4FA4;
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139 | }
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140 |
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141 | ctx->is224 = is224;
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142 |
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143 | return( 0 );
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144 | }
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145 |
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146 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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147 | void mbedtls_sha256_starts( mbedtls_sha256_context *ctx,
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148 | int is224 )
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149 | {
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150 | mbedtls_sha256_starts_ret( ctx, is224 );
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151 | }
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152 | #endif
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153 |
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154 | #if !defined(MBEDTLS_SHA256_PROCESS_ALT)
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155 | static const uint32_t K[] =
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156 | {
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157 | 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
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158 | 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
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159 | 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
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160 | 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
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161 | 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
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162 | 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
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163 | 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
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164 | 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
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165 | 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
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166 | 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
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167 | 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
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168 | 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
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169 | 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
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170 | 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
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171 | 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
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172 | 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2,
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173 | };
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174 |
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175 | #define SHR(x,n) ((x & 0xFFFFFFFF) >> n)
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176 | #define ROTR(x,n) (SHR(x,n) | (x << (32 - n)))
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177 |
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178 | #define S0(x) (ROTR(x, 7) ^ ROTR(x,18) ^ SHR(x, 3))
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179 | #define S1(x) (ROTR(x,17) ^ ROTR(x,19) ^ SHR(x,10))
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180 |
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181 | #define S2(x) (ROTR(x, 2) ^ ROTR(x,13) ^ ROTR(x,22))
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182 | #define S3(x) (ROTR(x, 6) ^ ROTR(x,11) ^ ROTR(x,25))
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183 |
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184 | #define F0(x,y,z) ((x & y) | (z & (x | y)))
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185 | #define F1(x,y,z) (z ^ (x & (y ^ z)))
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186 |
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187 | #define R(t) \
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188 | ( \
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189 | W[t] = S1(W[t - 2]) + W[t - 7] + \
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190 | S0(W[t - 15]) + W[t - 16] \
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191 | )
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192 |
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193 | #define P(a,b,c,d,e,f,g,h,x,K) \
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194 | { \
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195 | temp1 = h + S3(e) + F1(e,f,g) + K + x; \
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196 | temp2 = S2(a) + F0(a,b,c); \
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197 | d += temp1; h = temp1 + temp2; \
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198 | }
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199 |
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200 | int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx,
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201 | const unsigned char data[64] )
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202 | {
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203 | uint32_t temp1, temp2, W[64];
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204 | uint32_t A[8];
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205 | unsigned int i;
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206 |
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207 | SHA256_VALIDATE_RET( ctx != NULL );
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208 | SHA256_VALIDATE_RET( (const unsigned char *)data != NULL );
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209 |
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210 | for( i = 0; i < 8; i++ )
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211 | A[i] = ctx->state[i];
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212 |
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213 | #if defined(MBEDTLS_SHA256_SMALLER)
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214 | for( i = 0; i < 64; i++ )
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215 | {
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216 | if( i < 16 )
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217 | GET_UINT32_BE( W[i], data, 4 * i );
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218 | else
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219 | R( i );
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220 |
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221 | P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i], K[i] );
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222 |
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223 | temp1 = A[7]; A[7] = A[6]; A[6] = A[5]; A[5] = A[4]; A[4] = A[3];
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224 | A[3] = A[2]; A[2] = A[1]; A[1] = A[0]; A[0] = temp1;
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225 | }
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226 | #else /* MBEDTLS_SHA256_SMALLER */
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227 | for( i = 0; i < 16; i++ )
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228 | GET_UINT32_BE( W[i], data, 4 * i );
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229 |
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230 | for( i = 0; i < 16; i += 8 )
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231 | {
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232 | P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i+0], K[i+0] );
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233 | P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], W[i+1], K[i+1] );
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234 | P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], W[i+2], K[i+2] );
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235 | P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], W[i+3], K[i+3] );
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236 | P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], W[i+4], K[i+4] );
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237 | P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], W[i+5], K[i+5] );
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238 | P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], W[i+6], K[i+6] );
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239 | P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], W[i+7], K[i+7] );
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240 | }
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241 |
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242 | for( i = 16; i < 64; i += 8 )
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243 | {
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244 | P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], R(i+0), K[i+0] );
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245 | P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], R(i+1), K[i+1] );
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246 | P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], R(i+2), K[i+2] );
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247 | P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], R(i+3), K[i+3] );
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248 | P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], R(i+4), K[i+4] );
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249 | P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], R(i+5), K[i+5] );
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250 | P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], R(i+6), K[i+6] );
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251 | P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], R(i+7), K[i+7] );
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252 | }
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253 | #endif /* MBEDTLS_SHA256_SMALLER */
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254 |
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255 | for( i = 0; i < 8; i++ )
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256 | ctx->state[i] += A[i];
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257 |
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258 | return( 0 );
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259 | }
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260 |
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261 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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262 | void mbedtls_sha256_process( mbedtls_sha256_context *ctx,
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263 | const unsigned char data[64] )
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264 | {
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265 | mbedtls_internal_sha256_process( ctx, data );
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266 | }
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267 | #endif
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268 | #endif /* !MBEDTLS_SHA256_PROCESS_ALT */
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269 |
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270 | /*
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271 | * SHA-256 process buffer
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272 | */
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273 | int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx,
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274 | const unsigned char *input,
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275 | size_t ilen )
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276 | {
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277 | int ret;
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278 | size_t fill;
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279 | uint32_t left;
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280 |
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281 | SHA256_VALIDATE_RET( ctx != NULL );
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282 | SHA256_VALIDATE_RET( ilen == 0 || input != NULL );
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283 |
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284 | if( ilen == 0 )
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285 | return( 0 );
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286 |
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287 | left = ctx->total[0] & 0x3F;
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288 | fill = 64 - left;
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289 |
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290 | ctx->total[0] += (uint32_t) ilen;
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291 | ctx->total[0] &= 0xFFFFFFFF;
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292 |
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293 | if( ctx->total[0] < (uint32_t) ilen )
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294 | ctx->total[1]++;
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295 |
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296 | if( left && ilen >= fill )
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297 | {
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298 | memcpy( (void *) (ctx->buffer + left), input, fill );
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299 |
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300 | if( ( ret = mbedtls_internal_sha256_process( ctx, ctx->buffer ) ) != 0 )
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301 | return( ret );
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302 |
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303 | input += fill;
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304 | ilen -= fill;
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305 | left = 0;
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306 | }
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307 |
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308 | while( ilen >= 64 )
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309 | {
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310 | if( ( ret = mbedtls_internal_sha256_process( ctx, input ) ) != 0 )
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311 | return( ret );
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312 |
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313 | input += 64;
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314 | ilen -= 64;
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315 | }
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316 |
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317 | if( ilen > 0 )
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318 | memcpy( (void *) (ctx->buffer + left), input, ilen );
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319 |
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320 | return( 0 );
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321 | }
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322 |
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323 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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324 | void mbedtls_sha256_update( mbedtls_sha256_context *ctx,
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325 | const unsigned char *input,
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326 | size_t ilen )
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327 | {
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328 | mbedtls_sha256_update_ret( ctx, input, ilen );
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329 | }
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330 | #endif
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331 |
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332 | /*
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333 | * SHA-256 final digest
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334 | */
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335 | int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx,
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336 | unsigned char output[32] )
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337 | {
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338 | int ret;
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339 | uint32_t used;
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340 | uint32_t high, low;
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341 |
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342 | SHA256_VALIDATE_RET( ctx != NULL );
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343 | SHA256_VALIDATE_RET( (unsigned char *)output != NULL );
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344 |
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345 | /*
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346 | * Add padding: 0x80 then 0x00 until 8 bytes remain for the length
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347 | */
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348 | used = ctx->total[0] & 0x3F;
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349 |
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350 | ctx->buffer[used++] = 0x80;
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351 |
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352 | if( used <= 56 )
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353 | {
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354 | /* Enough room for padding + length in current block */
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355 | memset( ctx->buffer + used, 0, 56 - used );
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356 | }
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357 | else
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358 | {
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359 | /* We'll need an extra block */
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360 | memset( ctx->buffer + used, 0, 64 - used );
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361 |
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362 | if( ( ret = mbedtls_internal_sha256_process( ctx, ctx->buffer ) ) != 0 )
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363 | return( ret );
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364 |
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365 | memset( ctx->buffer, 0, 56 );
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366 | }
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367 |
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368 | /*
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369 | * Add message length
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370 | */
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371 | high = ( ctx->total[0] >> 29 )
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372 | | ( ctx->total[1] << 3 );
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373 | low = ( ctx->total[0] << 3 );
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374 |
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375 | PUT_UINT32_BE( high, ctx->buffer, 56 );
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376 | PUT_UINT32_BE( low, ctx->buffer, 60 );
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377 |
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378 | if( ( ret = mbedtls_internal_sha256_process( ctx, ctx->buffer ) ) != 0 )
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379 | return( ret );
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380 |
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381 | /*
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382 | * Output final state
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383 | */
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384 | PUT_UINT32_BE( ctx->state[0], output, 0 );
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385 | PUT_UINT32_BE( ctx->state[1], output, 4 );
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386 | PUT_UINT32_BE( ctx->state[2], output, 8 );
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387 | PUT_UINT32_BE( ctx->state[3], output, 12 );
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388 | PUT_UINT32_BE( ctx->state[4], output, 16 );
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389 | PUT_UINT32_BE( ctx->state[5], output, 20 );
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390 | PUT_UINT32_BE( ctx->state[6], output, 24 );
|
---|
391 |
|
---|
392 | if( ctx->is224 == 0 )
|
---|
393 | PUT_UINT32_BE( ctx->state[7], output, 28 );
|
---|
394 |
|
---|
395 | return( 0 );
|
---|
396 | }
|
---|
397 |
|
---|
398 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
|
---|
399 | void mbedtls_sha256_finish( mbedtls_sha256_context *ctx,
|
---|
400 | unsigned char output[32] )
|
---|
401 | {
|
---|
402 | mbedtls_sha256_finish_ret( ctx, output );
|
---|
403 | }
|
---|
404 | #endif
|
---|
405 |
|
---|
406 | #endif /* !MBEDTLS_SHA256_ALT */
|
---|
407 |
|
---|
408 | /*
|
---|
409 | * output = SHA-256( input buffer )
|
---|
410 | */
|
---|
411 | int mbedtls_sha256_ret( const unsigned char *input,
|
---|
412 | size_t ilen,
|
---|
413 | unsigned char output[32],
|
---|
414 | int is224 )
|
---|
415 | {
|
---|
416 | int ret;
|
---|
417 | mbedtls_sha256_context ctx;
|
---|
418 |
|
---|
419 | SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 );
|
---|
420 | SHA256_VALIDATE_RET( ilen == 0 || input != NULL );
|
---|
421 | SHA256_VALIDATE_RET( (unsigned char *)output != NULL );
|
---|
422 |
|
---|
423 | mbedtls_sha256_init( &ctx );
|
---|
424 |
|
---|
425 | if( ( ret = mbedtls_sha256_starts_ret( &ctx, is224 ) ) != 0 )
|
---|
426 | goto exit;
|
---|
427 |
|
---|
428 | if( ( ret = mbedtls_sha256_update_ret( &ctx, input, ilen ) ) != 0 )
|
---|
429 | goto exit;
|
---|
430 |
|
---|
431 | if( ( ret = mbedtls_sha256_finish_ret( &ctx, output ) ) != 0 )
|
---|
432 | goto exit;
|
---|
433 |
|
---|
434 | exit:
|
---|
435 | mbedtls_sha256_free( &ctx );
|
---|
436 |
|
---|
437 | return( ret );
|
---|
438 | }
|
---|
439 |
|
---|
440 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
|
---|
441 | void mbedtls_sha256( const unsigned char *input,
|
---|
442 | size_t ilen,
|
---|
443 | unsigned char output[32],
|
---|
444 | int is224 )
|
---|
445 | {
|
---|
446 | mbedtls_sha256_ret( input, ilen, output, is224 );
|
---|
447 | }
|
---|
448 | #endif
|
---|
449 |
|
---|
450 | #if defined(MBEDTLS_SELF_TEST)
|
---|
451 | /*
|
---|
452 | * FIPS-180-2 test vectors
|
---|
453 | */
|
---|
454 | static const unsigned char sha256_test_buf[3][57] =
|
---|
455 | {
|
---|
456 | { "abc" },
|
---|
457 | { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
|
---|
458 | { "" }
|
---|
459 | };
|
---|
460 |
|
---|
461 | static const size_t sha256_test_buflen[3] =
|
---|
462 | {
|
---|
463 | 3, 56, 1000
|
---|
464 | };
|
---|
465 |
|
---|
466 | static const unsigned char sha256_test_sum[6][32] =
|
---|
467 | {
|
---|
468 | /*
|
---|
469 | * SHA-224 test vectors
|
---|
470 | */
|
---|
471 | { 0x23, 0x09, 0x7D, 0x22, 0x34, 0x05, 0xD8, 0x22,
|
---|
472 | 0x86, 0x42, 0xA4, 0x77, 0xBD, 0xA2, 0x55, 0xB3,
|
---|
473 | 0x2A, 0xAD, 0xBC, 0xE4, 0xBD, 0xA0, 0xB3, 0xF7,
|
---|
474 | 0xE3, 0x6C, 0x9D, 0xA7 },
|
---|
475 | { 0x75, 0x38, 0x8B, 0x16, 0x51, 0x27, 0x76, 0xCC,
|
---|
476 | 0x5D, 0xBA, 0x5D, 0xA1, 0xFD, 0x89, 0x01, 0x50,
|
---|
477 | 0xB0, 0xC6, 0x45, 0x5C, 0xB4, 0xF5, 0x8B, 0x19,
|
---|
478 | 0x52, 0x52, 0x25, 0x25 },
|
---|
479 | { 0x20, 0x79, 0x46, 0x55, 0x98, 0x0C, 0x91, 0xD8,
|
---|
480 | 0xBB, 0xB4, 0xC1, 0xEA, 0x97, 0x61, 0x8A, 0x4B,
|
---|
481 | 0xF0, 0x3F, 0x42, 0x58, 0x19, 0x48, 0xB2, 0xEE,
|
---|
482 | 0x4E, 0xE7, 0xAD, 0x67 },
|
---|
483 |
|
---|
484 | /*
|
---|
485 | * SHA-256 test vectors
|
---|
486 | */
|
---|
487 | { 0xBA, 0x78, 0x16, 0xBF, 0x8F, 0x01, 0xCF, 0xEA,
|
---|
488 | 0x41, 0x41, 0x40, 0xDE, 0x5D, 0xAE, 0x22, 0x23,
|
---|
489 | 0xB0, 0x03, 0x61, 0xA3, 0x96, 0x17, 0x7A, 0x9C,
|
---|
490 | 0xB4, 0x10, 0xFF, 0x61, 0xF2, 0x00, 0x15, 0xAD },
|
---|
491 | { 0x24, 0x8D, 0x6A, 0x61, 0xD2, 0x06, 0x38, 0xB8,
|
---|
492 | 0xE5, 0xC0, 0x26, 0x93, 0x0C, 0x3E, 0x60, 0x39,
|
---|
493 | 0xA3, 0x3C, 0xE4, 0x59, 0x64, 0xFF, 0x21, 0x67,
|
---|
494 | 0xF6, 0xEC, 0xED, 0xD4, 0x19, 0xDB, 0x06, 0xC1 },
|
---|
495 | { 0xCD, 0xC7, 0x6E, 0x5C, 0x99, 0x14, 0xFB, 0x92,
|
---|
496 | 0x81, 0xA1, 0xC7, 0xE2, 0x84, 0xD7, 0x3E, 0x67,
|
---|
497 | 0xF1, 0x80, 0x9A, 0x48, 0xA4, 0x97, 0x20, 0x0E,
|
---|
498 | 0x04, 0x6D, 0x39, 0xCC, 0xC7, 0x11, 0x2C, 0xD0 }
|
---|
499 | };
|
---|
500 |
|
---|
501 | /*
|
---|
502 | * Checkup routine
|
---|
503 | */
|
---|
504 | int mbedtls_sha256_self_test( int verbose )
|
---|
505 | {
|
---|
506 | int i, j, k, buflen, ret = 0;
|
---|
507 | unsigned char *buf;
|
---|
508 | unsigned char sha256sum[32];
|
---|
509 | mbedtls_sha256_context ctx;
|
---|
510 |
|
---|
511 | buf = mbedtls_calloc( 1024, sizeof(unsigned char) );
|
---|
512 | if( NULL == buf )
|
---|
513 | {
|
---|
514 | if( verbose != 0 )
|
---|
515 | mbedtls_printf( "Buffer allocation failed\n" );
|
---|
516 |
|
---|
517 | return( 1 );
|
---|
518 | }
|
---|
519 |
|
---|
520 | mbedtls_sha256_init( &ctx );
|
---|
521 |
|
---|
522 | for( i = 0; i < 6; i++ )
|
---|
523 | {
|
---|
524 | j = i % 3;
|
---|
525 | k = i < 3;
|
---|
526 |
|
---|
527 | if( verbose != 0 )
|
---|
528 | mbedtls_printf( " SHA-%d test #%d: ", 256 - k * 32, j + 1 );
|
---|
529 |
|
---|
530 | if( ( ret = mbedtls_sha256_starts_ret( &ctx, k ) ) != 0 )
|
---|
531 | goto fail;
|
---|
532 |
|
---|
533 | if( j == 2 )
|
---|
534 | {
|
---|
535 | memset( buf, 'a', buflen = 1000 );
|
---|
536 |
|
---|
537 | for( j = 0; j < 1000; j++ )
|
---|
538 | {
|
---|
539 | ret = mbedtls_sha256_update_ret( &ctx, buf, buflen );
|
---|
540 | if( ret != 0 )
|
---|
541 | goto fail;
|
---|
542 | }
|
---|
543 |
|
---|
544 | }
|
---|
545 | else
|
---|
546 | {
|
---|
547 | ret = mbedtls_sha256_update_ret( &ctx, sha256_test_buf[j],
|
---|
548 | sha256_test_buflen[j] );
|
---|
549 | if( ret != 0 )
|
---|
550 | goto fail;
|
---|
551 | }
|
---|
552 |
|
---|
553 | if( ( ret = mbedtls_sha256_finish_ret( &ctx, sha256sum ) ) != 0 )
|
---|
554 | goto fail;
|
---|
555 |
|
---|
556 |
|
---|
557 | if( memcmp( sha256sum, sha256_test_sum[i], 32 - k * 4 ) != 0 )
|
---|
558 | {
|
---|
559 | ret = 1;
|
---|
560 | goto fail;
|
---|
561 | }
|
---|
562 |
|
---|
563 | if( verbose != 0 )
|
---|
564 | mbedtls_printf( "passed\n" );
|
---|
565 | }
|
---|
566 |
|
---|
567 | if( verbose != 0 )
|
---|
568 | mbedtls_printf( "\n" );
|
---|
569 |
|
---|
570 | goto exit;
|
---|
571 |
|
---|
572 | fail:
|
---|
573 | if( verbose != 0 )
|
---|
574 | mbedtls_printf( "failed\n" );
|
---|
575 |
|
---|
576 | exit:
|
---|
577 | mbedtls_sha256_free( &ctx );
|
---|
578 | mbedtls_free( buf );
|
---|
579 |
|
---|
580 | return( ret );
|
---|
581 | }
|
---|
582 |
|
---|
583 | #endif /* MBEDTLS_SELF_TEST */
|
---|
584 |
|
---|
585 | #endif /* MBEDTLS_SHA256_C */
|
---|