1 | /*
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2 | * RFC 1321 compliant MD5 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 MD5 algorithm was designed by Ron Rivest in 1991.
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23 | *
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24 | * http://www.ietf.org/rfc/rfc1321.txt
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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_MD5_C)
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34 |
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35 | #include "mbedtls/md5.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 | #if !defined(MBEDTLS_MD5_ALT)
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50 |
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51 | /*
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52 | * 32-bit integer manipulation macros (little endian)
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53 | */
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54 | #ifndef GET_UINT32_LE
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55 | #define GET_UINT32_LE(n,b,i) \
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56 | { \
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57 | (n) = ( (uint32_t) (b)[(i) ] ) \
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58 | | ( (uint32_t) (b)[(i) + 1] << 8 ) \
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59 | | ( (uint32_t) (b)[(i) + 2] << 16 ) \
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60 | | ( (uint32_t) (b)[(i) + 3] << 24 ); \
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61 | }
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62 | #endif
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63 |
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64 | #ifndef PUT_UINT32_LE
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65 | #define PUT_UINT32_LE(n,b,i) \
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66 | { \
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67 | (b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \
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68 | (b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \
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69 | (b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \
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70 | (b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \
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71 | }
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72 | #endif
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73 |
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74 | void mbedtls_md5_init( mbedtls_md5_context *ctx )
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75 | {
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76 | memset( ctx, 0, sizeof( mbedtls_md5_context ) );
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77 | }
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78 |
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79 | void mbedtls_md5_free( mbedtls_md5_context *ctx )
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80 | {
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81 | if( ctx == NULL )
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82 | return;
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83 |
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84 | mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) );
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85 | }
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86 |
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87 | void mbedtls_md5_clone( mbedtls_md5_context *dst,
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88 | const mbedtls_md5_context *src )
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89 | {
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90 | *dst = *src;
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91 | }
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92 |
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93 | /*
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94 | * MD5 context setup
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95 | */
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96 | int mbedtls_md5_starts_ret( mbedtls_md5_context *ctx )
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97 | {
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98 | ctx->total[0] = 0;
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99 | ctx->total[1] = 0;
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100 |
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101 | ctx->state[0] = 0x67452301;
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102 | ctx->state[1] = 0xEFCDAB89;
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103 | ctx->state[2] = 0x98BADCFE;
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104 | ctx->state[3] = 0x10325476;
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105 |
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106 | return( 0 );
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107 | }
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108 |
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109 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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110 | void mbedtls_md5_starts( mbedtls_md5_context *ctx )
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111 | {
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112 | mbedtls_md5_starts_ret( ctx );
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113 | }
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114 | #endif
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115 |
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116 | #if !defined(MBEDTLS_MD5_PROCESS_ALT)
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117 | int mbedtls_internal_md5_process( mbedtls_md5_context *ctx,
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118 | const unsigned char data[64] )
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119 | {
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120 | uint32_t X[16], A, B, C, D;
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121 |
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122 | GET_UINT32_LE( X[ 0], data, 0 );
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123 | GET_UINT32_LE( X[ 1], data, 4 );
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124 | GET_UINT32_LE( X[ 2], data, 8 );
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125 | GET_UINT32_LE( X[ 3], data, 12 );
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126 | GET_UINT32_LE( X[ 4], data, 16 );
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127 | GET_UINT32_LE( X[ 5], data, 20 );
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128 | GET_UINT32_LE( X[ 6], data, 24 );
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129 | GET_UINT32_LE( X[ 7], data, 28 );
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130 | GET_UINT32_LE( X[ 8], data, 32 );
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131 | GET_UINT32_LE( X[ 9], data, 36 );
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132 | GET_UINT32_LE( X[10], data, 40 );
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133 | GET_UINT32_LE( X[11], data, 44 );
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134 | GET_UINT32_LE( X[12], data, 48 );
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135 | GET_UINT32_LE( X[13], data, 52 );
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136 | GET_UINT32_LE( X[14], data, 56 );
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137 | GET_UINT32_LE( X[15], data, 60 );
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138 |
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139 | #define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
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140 |
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141 | #define P(a,b,c,d,k,s,t) \
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142 | { \
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143 | a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \
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144 | }
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145 |
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146 | A = ctx->state[0];
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147 | B = ctx->state[1];
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148 | C = ctx->state[2];
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149 | D = ctx->state[3];
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150 |
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151 | #define F(x,y,z) (z ^ (x & (y ^ z)))
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152 |
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153 | P( A, B, C, D, 0, 7, 0xD76AA478 );
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154 | P( D, A, B, C, 1, 12, 0xE8C7B756 );
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155 | P( C, D, A, B, 2, 17, 0x242070DB );
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156 | P( B, C, D, A, 3, 22, 0xC1BDCEEE );
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157 | P( A, B, C, D, 4, 7, 0xF57C0FAF );
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158 | P( D, A, B, C, 5, 12, 0x4787C62A );
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159 | P( C, D, A, B, 6, 17, 0xA8304613 );
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160 | P( B, C, D, A, 7, 22, 0xFD469501 );
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161 | P( A, B, C, D, 8, 7, 0x698098D8 );
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162 | P( D, A, B, C, 9, 12, 0x8B44F7AF );
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163 | P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
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164 | P( B, C, D, A, 11, 22, 0x895CD7BE );
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165 | P( A, B, C, D, 12, 7, 0x6B901122 );
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166 | P( D, A, B, C, 13, 12, 0xFD987193 );
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167 | P( C, D, A, B, 14, 17, 0xA679438E );
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168 | P( B, C, D, A, 15, 22, 0x49B40821 );
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169 |
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170 | #undef F
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171 |
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172 | #define F(x,y,z) (y ^ (z & (x ^ y)))
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173 |
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174 | P( A, B, C, D, 1, 5, 0xF61E2562 );
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175 | P( D, A, B, C, 6, 9, 0xC040B340 );
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176 | P( C, D, A, B, 11, 14, 0x265E5A51 );
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177 | P( B, C, D, A, 0, 20, 0xE9B6C7AA );
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178 | P( A, B, C, D, 5, 5, 0xD62F105D );
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179 | P( D, A, B, C, 10, 9, 0x02441453 );
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180 | P( C, D, A, B, 15, 14, 0xD8A1E681 );
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181 | P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
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182 | P( A, B, C, D, 9, 5, 0x21E1CDE6 );
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183 | P( D, A, B, C, 14, 9, 0xC33707D6 );
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184 | P( C, D, A, B, 3, 14, 0xF4D50D87 );
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185 | P( B, C, D, A, 8, 20, 0x455A14ED );
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186 | P( A, B, C, D, 13, 5, 0xA9E3E905 );
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187 | P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
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188 | P( C, D, A, B, 7, 14, 0x676F02D9 );
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189 | P( B, C, D, A, 12, 20, 0x8D2A4C8A );
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190 |
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191 | #undef F
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192 |
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193 | #define F(x,y,z) (x ^ y ^ z)
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194 |
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195 | P( A, B, C, D, 5, 4, 0xFFFA3942 );
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196 | P( D, A, B, C, 8, 11, 0x8771F681 );
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197 | P( C, D, A, B, 11, 16, 0x6D9D6122 );
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198 | P( B, C, D, A, 14, 23, 0xFDE5380C );
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199 | P( A, B, C, D, 1, 4, 0xA4BEEA44 );
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200 | P( D, A, B, C, 4, 11, 0x4BDECFA9 );
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201 | P( C, D, A, B, 7, 16, 0xF6BB4B60 );
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202 | P( B, C, D, A, 10, 23, 0xBEBFBC70 );
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203 | P( A, B, C, D, 13, 4, 0x289B7EC6 );
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204 | P( D, A, B, C, 0, 11, 0xEAA127FA );
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205 | P( C, D, A, B, 3, 16, 0xD4EF3085 );
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206 | P( B, C, D, A, 6, 23, 0x04881D05 );
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207 | P( A, B, C, D, 9, 4, 0xD9D4D039 );
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208 | P( D, A, B, C, 12, 11, 0xE6DB99E5 );
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209 | P( C, D, A, B, 15, 16, 0x1FA27CF8 );
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210 | P( B, C, D, A, 2, 23, 0xC4AC5665 );
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211 |
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212 | #undef F
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213 |
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214 | #define F(x,y,z) (y ^ (x | ~z))
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215 |
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216 | P( A, B, C, D, 0, 6, 0xF4292244 );
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217 | P( D, A, B, C, 7, 10, 0x432AFF97 );
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218 | P( C, D, A, B, 14, 15, 0xAB9423A7 );
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219 | P( B, C, D, A, 5, 21, 0xFC93A039 );
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220 | P( A, B, C, D, 12, 6, 0x655B59C3 );
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221 | P( D, A, B, C, 3, 10, 0x8F0CCC92 );
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222 | P( C, D, A, B, 10, 15, 0xFFEFF47D );
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223 | P( B, C, D, A, 1, 21, 0x85845DD1 );
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224 | P( A, B, C, D, 8, 6, 0x6FA87E4F );
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225 | P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
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226 | P( C, D, A, B, 6, 15, 0xA3014314 );
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227 | P( B, C, D, A, 13, 21, 0x4E0811A1 );
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228 | P( A, B, C, D, 4, 6, 0xF7537E82 );
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229 | P( D, A, B, C, 11, 10, 0xBD3AF235 );
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230 | P( C, D, A, B, 2, 15, 0x2AD7D2BB );
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231 | P( B, C, D, A, 9, 21, 0xEB86D391 );
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232 |
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233 | #undef F
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234 |
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235 | ctx->state[0] += A;
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236 | ctx->state[1] += B;
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237 | ctx->state[2] += C;
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238 | ctx->state[3] += D;
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239 |
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240 | return( 0 );
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241 | }
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242 |
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243 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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244 | void mbedtls_md5_process( mbedtls_md5_context *ctx,
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245 | const unsigned char data[64] )
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246 | {
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247 | mbedtls_internal_md5_process( ctx, data );
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248 | }
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249 | #endif
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250 | #endif /* !MBEDTLS_MD5_PROCESS_ALT */
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251 |
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252 | /*
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253 | * MD5 process buffer
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254 | */
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255 | int mbedtls_md5_update_ret( mbedtls_md5_context *ctx,
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256 | const unsigned char *input,
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257 | size_t ilen )
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258 | {
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259 | int ret;
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260 | size_t fill;
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261 | uint32_t left;
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262 |
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263 | if( ilen == 0 )
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264 | return( 0 );
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265 |
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266 | left = ctx->total[0] & 0x3F;
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267 | fill = 64 - left;
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268 |
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269 | ctx->total[0] += (uint32_t) ilen;
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270 | ctx->total[0] &= 0xFFFFFFFF;
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271 |
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272 | if( ctx->total[0] < (uint32_t) ilen )
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273 | ctx->total[1]++;
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274 |
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275 | if( left && ilen >= fill )
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276 | {
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277 | memcpy( (void *) (ctx->buffer + left), input, fill );
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278 | if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
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279 | return( ret );
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280 |
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281 | input += fill;
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282 | ilen -= fill;
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283 | left = 0;
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284 | }
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285 |
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286 | while( ilen >= 64 )
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287 | {
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288 | if( ( ret = mbedtls_internal_md5_process( ctx, input ) ) != 0 )
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289 | return( ret );
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290 |
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291 | input += 64;
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292 | ilen -= 64;
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293 | }
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294 |
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295 | if( ilen > 0 )
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296 | {
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297 | memcpy( (void *) (ctx->buffer + left), input, ilen );
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298 | }
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299 |
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300 | return( 0 );
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301 | }
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302 |
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303 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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304 | void mbedtls_md5_update( mbedtls_md5_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 | mbedtls_md5_update_ret( ctx, input, ilen );
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309 | }
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310 | #endif
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311 |
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312 | /*
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313 | * MD5 final digest
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314 | */
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315 | int mbedtls_md5_finish_ret( mbedtls_md5_context *ctx,
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316 | unsigned char output[16] )
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317 | {
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318 | int ret;
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319 | uint32_t used;
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320 | uint32_t high, low;
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321 |
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322 | /*
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323 | * Add padding: 0x80 then 0x00 until 8 bytes remain for the length
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324 | */
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325 | used = ctx->total[0] & 0x3F;
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326 |
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327 | ctx->buffer[used++] = 0x80;
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328 |
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329 | if( used <= 56 )
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330 | {
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331 | /* Enough room for padding + length in current block */
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332 | memset( ctx->buffer + used, 0, 56 - used );
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333 | }
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334 | else
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335 | {
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336 | /* We'll need an extra block */
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337 | memset( ctx->buffer + used, 0, 64 - used );
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338 |
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339 | if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
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340 | return( ret );
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341 |
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342 | memset( ctx->buffer, 0, 56 );
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343 | }
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344 |
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345 | /*
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346 | * Add message length
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347 | */
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348 | high = ( ctx->total[0] >> 29 )
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349 | | ( ctx->total[1] << 3 );
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350 | low = ( ctx->total[0] << 3 );
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351 |
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352 | PUT_UINT32_LE( low, ctx->buffer, 56 );
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353 | PUT_UINT32_LE( high, ctx->buffer, 60 );
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354 |
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355 | if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 )
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356 | return( ret );
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357 |
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358 | /*
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359 | * Output final state
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360 | */
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361 | PUT_UINT32_LE( ctx->state[0], output, 0 );
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362 | PUT_UINT32_LE( ctx->state[1], output, 4 );
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363 | PUT_UINT32_LE( ctx->state[2], output, 8 );
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364 | PUT_UINT32_LE( ctx->state[3], output, 12 );
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365 |
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366 | return( 0 );
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367 | }
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368 |
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369 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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370 | void mbedtls_md5_finish( mbedtls_md5_context *ctx,
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371 | unsigned char output[16] )
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372 | {
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373 | mbedtls_md5_finish_ret( ctx, output );
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374 | }
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375 | #endif
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376 |
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377 | #endif /* !MBEDTLS_MD5_ALT */
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378 |
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379 | /*
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380 | * output = MD5( input buffer )
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381 | */
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382 | int mbedtls_md5_ret( const unsigned char *input,
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383 | size_t ilen,
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384 | unsigned char output[16] )
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385 | {
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386 | int ret;
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387 | mbedtls_md5_context ctx;
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388 |
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389 | mbedtls_md5_init( &ctx );
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390 |
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391 | if( ( ret = mbedtls_md5_starts_ret( &ctx ) ) != 0 )
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392 | goto exit;
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393 |
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394 | if( ( ret = mbedtls_md5_update_ret( &ctx, input, ilen ) ) != 0 )
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395 | goto exit;
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396 |
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397 | if( ( ret = mbedtls_md5_finish_ret( &ctx, output ) ) != 0 )
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398 | goto exit;
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399 |
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400 | exit:
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401 | mbedtls_md5_free( &ctx );
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402 |
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403 | return( ret );
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404 | }
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405 |
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406 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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407 | void mbedtls_md5( const unsigned char *input,
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408 | size_t ilen,
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409 | unsigned char output[16] )
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410 | {
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411 | mbedtls_md5_ret( input, ilen, output );
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412 | }
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413 | #endif
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414 |
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415 | #if defined(MBEDTLS_SELF_TEST)
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416 | /*
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417 | * RFC 1321 test vectors
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418 | */
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419 | static const unsigned char md5_test_buf[7][81] =
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420 | {
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421 | { "" },
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422 | { "a" },
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423 | { "abc" },
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424 | { "message digest" },
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425 | { "abcdefghijklmnopqrstuvwxyz" },
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426 | { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
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427 | { "12345678901234567890123456789012345678901234567890123456789012"
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428 | "345678901234567890" }
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429 | };
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430 |
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431 | static const size_t md5_test_buflen[7] =
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432 | {
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433 | 0, 1, 3, 14, 26, 62, 80
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434 | };
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435 |
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436 | static const unsigned char md5_test_sum[7][16] =
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437 | {
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438 | { 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
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439 | 0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
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440 | { 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
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441 | 0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
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442 | { 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
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443 | 0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
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444 | { 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
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445 | 0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
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446 | { 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
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447 | 0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
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448 | { 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
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449 | 0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
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450 | { 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
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451 | 0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
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452 | };
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453 |
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454 | /*
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455 | * Checkup routine
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456 | */
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457 | int mbedtls_md5_self_test( int verbose )
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458 | {
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459 | int i, ret = 0;
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460 | unsigned char md5sum[16];
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461 |
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462 | for( i = 0; i < 7; i++ )
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463 | {
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464 | if( verbose != 0 )
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465 | mbedtls_printf( " MD5 test #%d: ", i + 1 );
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466 |
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467 | ret = mbedtls_md5_ret( md5_test_buf[i], md5_test_buflen[i], md5sum );
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468 | if( ret != 0 )
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469 | goto fail;
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470 |
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471 | if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 )
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472 | {
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473 | ret = 1;
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474 | goto fail;
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475 | }
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476 |
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477 | if( verbose != 0 )
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478 | mbedtls_printf( "passed\n" );
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479 | }
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480 |
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481 | if( verbose != 0 )
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482 | mbedtls_printf( "\n" );
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483 |
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484 | return( 0 );
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485 |
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486 | fail:
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487 | if( verbose != 0 )
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488 | mbedtls_printf( "failed\n" );
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489 |
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490 | return( ret );
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491 | }
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492 |
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493 | #endif /* MBEDTLS_SELF_TEST */
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494 |
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495 | #endif /* MBEDTLS_MD5_C */
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