1 | /*
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2 | * FIPS-180-1 compliant SHA-1 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-1 standard was published by NIST in 1993.
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23 | *
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24 | * http://www.itl.nist.gov/fipspubs/fip180-1.htm
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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_SHA1_C)
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34 |
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35 | #include "mbedtls/sha1.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 | #define mbedtls_printf printf
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46 | #endif /* MBEDTLS_PLATFORM_C */
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47 | #endif /* MBEDTLS_SELF_TEST */
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48 |
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49 | #define SHA1_VALIDATE_RET(cond) \
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50 | MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA1_BAD_INPUT_DATA )
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51 |
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52 | #define SHA1_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond )
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53 |
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54 | #if !defined(MBEDTLS_SHA1_ALT)
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55 |
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56 | /*
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57 | * 32-bit integer manipulation macros (big endian)
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58 | */
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59 | #ifndef GET_UINT32_BE
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60 | #define GET_UINT32_BE(n,b,i) \
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61 | { \
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62 | (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
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63 | | ( (uint32_t) (b)[(i) + 1] << 16 ) \
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64 | | ( (uint32_t) (b)[(i) + 2] << 8 ) \
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65 | | ( (uint32_t) (b)[(i) + 3] ); \
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66 | }
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67 | #endif
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68 |
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69 | #ifndef PUT_UINT32_BE
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70 | #define PUT_UINT32_BE(n,b,i) \
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71 | { \
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72 | (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
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73 | (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
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74 | (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
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75 | (b)[(i) + 3] = (unsigned char) ( (n) ); \
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76 | }
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77 | #endif
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78 |
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79 | void mbedtls_sha1_init( mbedtls_sha1_context *ctx )
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80 | {
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81 | SHA1_VALIDATE( ctx != NULL );
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82 |
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83 | memset( ctx, 0, sizeof( mbedtls_sha1_context ) );
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84 | }
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85 |
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86 | void mbedtls_sha1_free( mbedtls_sha1_context *ctx )
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87 | {
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88 | if( ctx == NULL )
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89 | return;
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90 |
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91 | mbedtls_platform_zeroize( ctx, sizeof( mbedtls_sha1_context ) );
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92 | }
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93 |
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94 | void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
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95 | const mbedtls_sha1_context *src )
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96 | {
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97 | SHA1_VALIDATE( dst != NULL );
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98 | SHA1_VALIDATE( src != NULL );
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99 |
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100 | *dst = *src;
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101 | }
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102 |
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103 | /*
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104 | * SHA-1 context setup
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105 | */
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106 | int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx )
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107 | {
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108 | SHA1_VALIDATE_RET( ctx != NULL );
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109 |
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110 | ctx->total[0] = 0;
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111 | ctx->total[1] = 0;
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112 |
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113 | ctx->state[0] = 0x67452301;
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114 | ctx->state[1] = 0xEFCDAB89;
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115 | ctx->state[2] = 0x98BADCFE;
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116 | ctx->state[3] = 0x10325476;
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117 | ctx->state[4] = 0xC3D2E1F0;
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118 |
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119 | return( 0 );
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120 | }
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121 |
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122 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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123 | void mbedtls_sha1_starts( mbedtls_sha1_context *ctx )
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124 | {
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125 | mbedtls_sha1_starts_ret( ctx );
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126 | }
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127 | #endif
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128 |
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129 | #if !defined(MBEDTLS_SHA1_PROCESS_ALT)
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130 | int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx,
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131 | const unsigned char data[64] )
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132 | {
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133 | uint32_t temp, W[16], A, B, C, D, E;
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134 |
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135 | SHA1_VALIDATE_RET( ctx != NULL );
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136 | SHA1_VALIDATE_RET( (const unsigned char *)data != NULL );
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137 |
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138 | GET_UINT32_BE( W[ 0], data, 0 );
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139 | GET_UINT32_BE( W[ 1], data, 4 );
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140 | GET_UINT32_BE( W[ 2], data, 8 );
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141 | GET_UINT32_BE( W[ 3], data, 12 );
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142 | GET_UINT32_BE( W[ 4], data, 16 );
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143 | GET_UINT32_BE( W[ 5], data, 20 );
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144 | GET_UINT32_BE( W[ 6], data, 24 );
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145 | GET_UINT32_BE( W[ 7], data, 28 );
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146 | GET_UINT32_BE( W[ 8], data, 32 );
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147 | GET_UINT32_BE( W[ 9], data, 36 );
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148 | GET_UINT32_BE( W[10], data, 40 );
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149 | GET_UINT32_BE( W[11], data, 44 );
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150 | GET_UINT32_BE( W[12], data, 48 );
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151 | GET_UINT32_BE( W[13], data, 52 );
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152 | GET_UINT32_BE( W[14], data, 56 );
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153 | GET_UINT32_BE( W[15], data, 60 );
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154 |
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155 | #define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
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156 |
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157 | #define R(t) \
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158 | ( \
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159 | temp = W[( t - 3 ) & 0x0F] ^ W[( t - 8 ) & 0x0F] ^ \
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160 | W[( t - 14 ) & 0x0F] ^ W[ t & 0x0F], \
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161 | ( W[t & 0x0F] = S(temp,1) ) \
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162 | )
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163 |
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164 | #define P(a,b,c,d,e,x) \
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165 | { \
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166 | e += S(a,5) + F(b,c,d) + K + x; b = S(b,30); \
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167 | }
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168 |
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169 | A = ctx->state[0];
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170 | B = ctx->state[1];
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171 | C = ctx->state[2];
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172 | D = ctx->state[3];
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173 | E = ctx->state[4];
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174 |
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175 | #define F(x,y,z) (z ^ (x & (y ^ z)))
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176 | #define K 0x5A827999
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177 |
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178 | P( A, B, C, D, E, W[0] );
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179 | P( E, A, B, C, D, W[1] );
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180 | P( D, E, A, B, C, W[2] );
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181 | P( C, D, E, A, B, W[3] );
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182 | P( B, C, D, E, A, W[4] );
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183 | P( A, B, C, D, E, W[5] );
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184 | P( E, A, B, C, D, W[6] );
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185 | P( D, E, A, B, C, W[7] );
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186 | P( C, D, E, A, B, W[8] );
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187 | P( B, C, D, E, A, W[9] );
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188 | P( A, B, C, D, E, W[10] );
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189 | P( E, A, B, C, D, W[11] );
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190 | P( D, E, A, B, C, W[12] );
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191 | P( C, D, E, A, B, W[13] );
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192 | P( B, C, D, E, A, W[14] );
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193 | P( A, B, C, D, E, W[15] );
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194 | P( E, A, B, C, D, R(16) );
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195 | P( D, E, A, B, C, R(17) );
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196 | P( C, D, E, A, B, R(18) );
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197 | P( B, C, D, E, A, R(19) );
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198 |
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199 | #undef K
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200 | #undef F
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201 |
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202 | #define F(x,y,z) (x ^ y ^ z)
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203 | #define K 0x6ED9EBA1
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204 |
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205 | P( A, B, C, D, E, R(20) );
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206 | P( E, A, B, C, D, R(21) );
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207 | P( D, E, A, B, C, R(22) );
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208 | P( C, D, E, A, B, R(23) );
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209 | P( B, C, D, E, A, R(24) );
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210 | P( A, B, C, D, E, R(25) );
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211 | P( E, A, B, C, D, R(26) );
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212 | P( D, E, A, B, C, R(27) );
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213 | P( C, D, E, A, B, R(28) );
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214 | P( B, C, D, E, A, R(29) );
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215 | P( A, B, C, D, E, R(30) );
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216 | P( E, A, B, C, D, R(31) );
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217 | P( D, E, A, B, C, R(32) );
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218 | P( C, D, E, A, B, R(33) );
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219 | P( B, C, D, E, A, R(34) );
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220 | P( A, B, C, D, E, R(35) );
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221 | P( E, A, B, C, D, R(36) );
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222 | P( D, E, A, B, C, R(37) );
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223 | P( C, D, E, A, B, R(38) );
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224 | P( B, C, D, E, A, R(39) );
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225 |
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226 | #undef K
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227 | #undef F
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228 |
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229 | #define F(x,y,z) ((x & y) | (z & (x | y)))
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230 | #define K 0x8F1BBCDC
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231 |
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232 | P( A, B, C, D, E, R(40) );
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233 | P( E, A, B, C, D, R(41) );
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234 | P( D, E, A, B, C, R(42) );
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235 | P( C, D, E, A, B, R(43) );
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236 | P( B, C, D, E, A, R(44) );
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237 | P( A, B, C, D, E, R(45) );
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238 | P( E, A, B, C, D, R(46) );
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239 | P( D, E, A, B, C, R(47) );
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240 | P( C, D, E, A, B, R(48) );
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241 | P( B, C, D, E, A, R(49) );
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242 | P( A, B, C, D, E, R(50) );
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243 | P( E, A, B, C, D, R(51) );
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244 | P( D, E, A, B, C, R(52) );
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245 | P( C, D, E, A, B, R(53) );
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246 | P( B, C, D, E, A, R(54) );
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247 | P( A, B, C, D, E, R(55) );
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248 | P( E, A, B, C, D, R(56) );
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249 | P( D, E, A, B, C, R(57) );
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250 | P( C, D, E, A, B, R(58) );
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251 | P( B, C, D, E, A, R(59) );
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252 |
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253 | #undef K
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254 | #undef F
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255 |
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256 | #define F(x,y,z) (x ^ y ^ z)
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257 | #define K 0xCA62C1D6
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258 |
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259 | P( A, B, C, D, E, R(60) );
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260 | P( E, A, B, C, D, R(61) );
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261 | P( D, E, A, B, C, R(62) );
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262 | P( C, D, E, A, B, R(63) );
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263 | P( B, C, D, E, A, R(64) );
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264 | P( A, B, C, D, E, R(65) );
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265 | P( E, A, B, C, D, R(66) );
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266 | P( D, E, A, B, C, R(67) );
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267 | P( C, D, E, A, B, R(68) );
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268 | P( B, C, D, E, A, R(69) );
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269 | P( A, B, C, D, E, R(70) );
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270 | P( E, A, B, C, D, R(71) );
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271 | P( D, E, A, B, C, R(72) );
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272 | P( C, D, E, A, B, R(73) );
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273 | P( B, C, D, E, A, R(74) );
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274 | P( A, B, C, D, E, R(75) );
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275 | P( E, A, B, C, D, R(76) );
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276 | P( D, E, A, B, C, R(77) );
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277 | P( C, D, E, A, B, R(78) );
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278 | P( B, C, D, E, A, R(79) );
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279 |
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280 | #undef K
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281 | #undef F
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282 |
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283 | ctx->state[0] += A;
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284 | ctx->state[1] += B;
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285 | ctx->state[2] += C;
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286 | ctx->state[3] += D;
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287 | ctx->state[4] += E;
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288 |
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289 | return( 0 );
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290 | }
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291 |
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292 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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293 | void mbedtls_sha1_process( mbedtls_sha1_context *ctx,
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294 | const unsigned char data[64] )
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295 | {
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296 | mbedtls_internal_sha1_process( ctx, data );
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297 | }
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298 | #endif
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299 | #endif /* !MBEDTLS_SHA1_PROCESS_ALT */
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300 |
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301 | /*
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302 | * SHA-1 process buffer
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303 | */
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304 | int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx,
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305 | const unsigned char *input,
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306 | size_t ilen )
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307 | {
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308 | int ret;
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309 | size_t fill;
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310 | uint32_t left;
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311 |
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312 | SHA1_VALIDATE_RET( ctx != NULL );
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313 | SHA1_VALIDATE_RET( ilen == 0 || input != NULL );
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314 |
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315 | if( ilen == 0 )
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316 | return( 0 );
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317 |
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318 | left = ctx->total[0] & 0x3F;
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319 | fill = 64 - left;
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320 |
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321 | ctx->total[0] += (uint32_t) ilen;
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322 | ctx->total[0] &= 0xFFFFFFFF;
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323 |
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324 | if( ctx->total[0] < (uint32_t) ilen )
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325 | ctx->total[1]++;
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326 |
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327 | if( left && ilen >= fill )
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328 | {
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329 | memcpy( (void *) (ctx->buffer + left), input, fill );
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330 |
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331 | if( ( ret = mbedtls_internal_sha1_process( ctx, ctx->buffer ) ) != 0 )
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332 | return( ret );
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333 |
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334 | input += fill;
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335 | ilen -= fill;
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336 | left = 0;
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337 | }
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338 |
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339 | while( ilen >= 64 )
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340 | {
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341 | if( ( ret = mbedtls_internal_sha1_process( ctx, input ) ) != 0 )
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342 | return( ret );
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343 |
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344 | input += 64;
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345 | ilen -= 64;
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346 | }
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347 |
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348 | if( ilen > 0 )
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349 | memcpy( (void *) (ctx->buffer + left), input, ilen );
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350 |
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351 | return( 0 );
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352 | }
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353 |
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354 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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355 | void mbedtls_sha1_update( mbedtls_sha1_context *ctx,
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356 | const unsigned char *input,
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357 | size_t ilen )
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358 | {
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359 | mbedtls_sha1_update_ret( ctx, input, ilen );
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360 | }
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361 | #endif
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362 |
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363 | /*
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364 | * SHA-1 final digest
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365 | */
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366 | int mbedtls_sha1_finish_ret( mbedtls_sha1_context *ctx,
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367 | unsigned char output[20] )
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368 | {
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369 | int ret;
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370 | uint32_t used;
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371 | uint32_t high, low;
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372 |
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373 | SHA1_VALIDATE_RET( ctx != NULL );
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374 | SHA1_VALIDATE_RET( (unsigned char *)output != NULL );
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375 |
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376 | /*
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377 | * Add padding: 0x80 then 0x00 until 8 bytes remain for the length
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378 | */
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379 | used = ctx->total[0] & 0x3F;
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380 |
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381 | ctx->buffer[used++] = 0x80;
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382 |
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383 | if( used <= 56 )
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384 | {
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385 | /* Enough room for padding + length in current block */
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386 | memset( ctx->buffer + used, 0, 56 - used );
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387 | }
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388 | else
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389 | {
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390 | /* We'll need an extra block */
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391 | memset( ctx->buffer + used, 0, 64 - used );
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392 |
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393 | if( ( ret = mbedtls_internal_sha1_process( ctx, ctx->buffer ) ) != 0 )
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394 | return( ret );
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395 |
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396 | memset( ctx->buffer, 0, 56 );
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397 | }
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398 |
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399 | /*
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400 | * Add message length
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401 | */
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402 | high = ( ctx->total[0] >> 29 )
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403 | | ( ctx->total[1] << 3 );
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404 | low = ( ctx->total[0] << 3 );
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405 |
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406 | PUT_UINT32_BE( high, ctx->buffer, 56 );
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407 | PUT_UINT32_BE( low, ctx->buffer, 60 );
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408 |
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409 | if( ( ret = mbedtls_internal_sha1_process( ctx, ctx->buffer ) ) != 0 )
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410 | return( ret );
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411 |
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412 | /*
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413 | * Output final state
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414 | */
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415 | PUT_UINT32_BE( ctx->state[0], output, 0 );
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416 | PUT_UINT32_BE( ctx->state[1], output, 4 );
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417 | PUT_UINT32_BE( ctx->state[2], output, 8 );
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418 | PUT_UINT32_BE( ctx->state[3], output, 12 );
|
---|
419 | PUT_UINT32_BE( ctx->state[4], output, 16 );
|
---|
420 |
|
---|
421 | return( 0 );
|
---|
422 | }
|
---|
423 |
|
---|
424 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
|
---|
425 | void mbedtls_sha1_finish( mbedtls_sha1_context *ctx,
|
---|
426 | unsigned char output[20] )
|
---|
427 | {
|
---|
428 | mbedtls_sha1_finish_ret( ctx, output );
|
---|
429 | }
|
---|
430 | #endif
|
---|
431 |
|
---|
432 | #endif /* !MBEDTLS_SHA1_ALT */
|
---|
433 |
|
---|
434 | /*
|
---|
435 | * output = SHA-1( input buffer )
|
---|
436 | */
|
---|
437 | int mbedtls_sha1_ret( const unsigned char *input,
|
---|
438 | size_t ilen,
|
---|
439 | unsigned char output[20] )
|
---|
440 | {
|
---|
441 | int ret;
|
---|
442 | mbedtls_sha1_context ctx;
|
---|
443 |
|
---|
444 | SHA1_VALIDATE_RET( ilen == 0 || input != NULL );
|
---|
445 | SHA1_VALIDATE_RET( (unsigned char *)output != NULL );
|
---|
446 |
|
---|
447 | mbedtls_sha1_init( &ctx );
|
---|
448 |
|
---|
449 | if( ( ret = mbedtls_sha1_starts_ret( &ctx ) ) != 0 )
|
---|
450 | goto exit;
|
---|
451 |
|
---|
452 | if( ( ret = mbedtls_sha1_update_ret( &ctx, input, ilen ) ) != 0 )
|
---|
453 | goto exit;
|
---|
454 |
|
---|
455 | if( ( ret = mbedtls_sha1_finish_ret( &ctx, output ) ) != 0 )
|
---|
456 | goto exit;
|
---|
457 |
|
---|
458 | exit:
|
---|
459 | mbedtls_sha1_free( &ctx );
|
---|
460 |
|
---|
461 | return( ret );
|
---|
462 | }
|
---|
463 |
|
---|
464 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
|
---|
465 | void mbedtls_sha1( const unsigned char *input,
|
---|
466 | size_t ilen,
|
---|
467 | unsigned char output[20] )
|
---|
468 | {
|
---|
469 | mbedtls_sha1_ret( input, ilen, output );
|
---|
470 | }
|
---|
471 | #endif
|
---|
472 |
|
---|
473 | #if defined(MBEDTLS_SELF_TEST)
|
---|
474 | /*
|
---|
475 | * FIPS-180-1 test vectors
|
---|
476 | */
|
---|
477 | static const unsigned char sha1_test_buf[3][57] =
|
---|
478 | {
|
---|
479 | { "abc" },
|
---|
480 | { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
|
---|
481 | { "" }
|
---|
482 | };
|
---|
483 |
|
---|
484 | static const size_t sha1_test_buflen[3] =
|
---|
485 | {
|
---|
486 | 3, 56, 1000
|
---|
487 | };
|
---|
488 |
|
---|
489 | static const unsigned char sha1_test_sum[3][20] =
|
---|
490 | {
|
---|
491 | { 0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A, 0xBA, 0x3E,
|
---|
492 | 0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C, 0x9C, 0xD0, 0xD8, 0x9D },
|
---|
493 | { 0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, 0xBA, 0xAE,
|
---|
494 | 0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, 0xE5, 0x46, 0x70, 0xF1 },
|
---|
495 | { 0x34, 0xAA, 0x97, 0x3C, 0xD4, 0xC4, 0xDA, 0xA4, 0xF6, 0x1E,
|
---|
496 | 0xEB, 0x2B, 0xDB, 0xAD, 0x27, 0x31, 0x65, 0x34, 0x01, 0x6F }
|
---|
497 | };
|
---|
498 |
|
---|
499 | /*
|
---|
500 | * Checkup routine
|
---|
501 | */
|
---|
502 | int mbedtls_sha1_self_test( int verbose )
|
---|
503 | {
|
---|
504 | int i, j, buflen, ret = 0;
|
---|
505 | unsigned char buf[1024];
|
---|
506 | unsigned char sha1sum[20];
|
---|
507 | mbedtls_sha1_context ctx;
|
---|
508 |
|
---|
509 | mbedtls_sha1_init( &ctx );
|
---|
510 |
|
---|
511 | /*
|
---|
512 | * SHA-1
|
---|
513 | */
|
---|
514 | for( i = 0; i < 3; i++ )
|
---|
515 | {
|
---|
516 | if( verbose != 0 )
|
---|
517 | mbedtls_printf( " SHA-1 test #%d: ", i + 1 );
|
---|
518 |
|
---|
519 | if( ( ret = mbedtls_sha1_starts_ret( &ctx ) ) != 0 )
|
---|
520 | goto fail;
|
---|
521 |
|
---|
522 | if( i == 2 )
|
---|
523 | {
|
---|
524 | memset( buf, 'a', buflen = 1000 );
|
---|
525 |
|
---|
526 | for( j = 0; j < 1000; j++ )
|
---|
527 | {
|
---|
528 | ret = mbedtls_sha1_update_ret( &ctx, buf, buflen );
|
---|
529 | if( ret != 0 )
|
---|
530 | goto fail;
|
---|
531 | }
|
---|
532 | }
|
---|
533 | else
|
---|
534 | {
|
---|
535 | ret = mbedtls_sha1_update_ret( &ctx, sha1_test_buf[i],
|
---|
536 | sha1_test_buflen[i] );
|
---|
537 | if( ret != 0 )
|
---|
538 | goto fail;
|
---|
539 | }
|
---|
540 |
|
---|
541 | if( ( ret = mbedtls_sha1_finish_ret( &ctx, sha1sum ) ) != 0 )
|
---|
542 | goto fail;
|
---|
543 |
|
---|
544 | if( memcmp( sha1sum, sha1_test_sum[i], 20 ) != 0 )
|
---|
545 | {
|
---|
546 | ret = 1;
|
---|
547 | goto fail;
|
---|
548 | }
|
---|
549 |
|
---|
550 | if( verbose != 0 )
|
---|
551 | mbedtls_printf( "passed\n" );
|
---|
552 | }
|
---|
553 |
|
---|
554 | if( verbose != 0 )
|
---|
555 | mbedtls_printf( "\n" );
|
---|
556 |
|
---|
557 | goto exit;
|
---|
558 |
|
---|
559 | fail:
|
---|
560 | if( verbose != 0 )
|
---|
561 | mbedtls_printf( "failed\n" );
|
---|
562 |
|
---|
563 | exit:
|
---|
564 | mbedtls_sha1_free( &ctx );
|
---|
565 |
|
---|
566 | return( ret );
|
---|
567 | }
|
---|
568 |
|
---|
569 | #endif /* MBEDTLS_SELF_TEST */
|
---|
570 |
|
---|
571 | #endif /* MBEDTLS_SHA1_C */
|
---|