1 | /*
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2 | * RFC 1186/1320 compliant MD4 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 MD4 algorithm was designed by Ron Rivest in 1990.
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23 | *
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24 | * http://www.ietf.org/rfc/rfc1186.txt
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25 | * http://www.ietf.org/rfc/rfc1320.txt
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26 | */
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27 |
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28 | #if !defined(MBEDTLS_CONFIG_FILE)
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29 | #include "mbedtls/config.h"
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30 | #else
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31 | #include MBEDTLS_CONFIG_FILE
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32 | #endif
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33 |
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34 | #if defined(MBEDTLS_MD4_C)
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35 |
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36 | #include "mbedtls/md4.h"
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37 | #include "mbedtls/platform_util.h"
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38 |
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39 | #include <string.h>
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40 |
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41 | #if defined(MBEDTLS_SELF_TEST)
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42 | #if defined(MBEDTLS_PLATFORM_C)
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43 | #include "mbedtls/platform.h"
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44 | #else
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45 | #include <stdio.h>
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46 | #define mbedtls_printf printf
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47 | #endif /* MBEDTLS_PLATFORM_C */
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48 | #endif /* MBEDTLS_SELF_TEST */
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49 |
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50 | #if !defined(MBEDTLS_MD4_ALT)
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51 |
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52 | /*
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53 | * 32-bit integer manipulation macros (little endian)
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54 | */
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55 | #ifndef GET_UINT32_LE
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56 | #define GET_UINT32_LE(n,b,i) \
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57 | { \
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58 | (n) = ( (uint32_t) (b)[(i) ] ) \
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59 | | ( (uint32_t) (b)[(i) + 1] << 8 ) \
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60 | | ( (uint32_t) (b)[(i) + 2] << 16 ) \
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61 | | ( (uint32_t) (b)[(i) + 3] << 24 ); \
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62 | }
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63 | #endif
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64 |
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65 | #ifndef PUT_UINT32_LE
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66 | #define PUT_UINT32_LE(n,b,i) \
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67 | { \
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68 | (b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \
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69 | (b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \
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70 | (b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \
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71 | (b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \
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72 | }
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73 | #endif
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74 |
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75 | void mbedtls_md4_init( mbedtls_md4_context *ctx )
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76 | {
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77 | memset( ctx, 0, sizeof( mbedtls_md4_context ) );
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78 | }
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79 |
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80 | void mbedtls_md4_free( mbedtls_md4_context *ctx )
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81 | {
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82 | if( ctx == NULL )
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83 | return;
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84 |
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85 | mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md4_context ) );
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86 | }
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87 |
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88 | void mbedtls_md4_clone( mbedtls_md4_context *dst,
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89 | const mbedtls_md4_context *src )
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90 | {
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91 | *dst = *src;
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92 | }
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93 |
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94 | /*
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95 | * MD4 context setup
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96 | */
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97 | int mbedtls_md4_starts_ret( mbedtls_md4_context *ctx )
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98 | {
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99 | ctx->total[0] = 0;
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100 | ctx->total[1] = 0;
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101 |
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102 | ctx->state[0] = 0x67452301;
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103 | ctx->state[1] = 0xEFCDAB89;
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104 | ctx->state[2] = 0x98BADCFE;
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105 | ctx->state[3] = 0x10325476;
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106 |
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107 | return( 0 );
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108 | }
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109 |
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110 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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111 | void mbedtls_md4_starts( mbedtls_md4_context *ctx )
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112 | {
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113 | mbedtls_md4_starts_ret( ctx );
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114 | }
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115 | #endif
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116 |
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117 | #if !defined(MBEDTLS_MD4_PROCESS_ALT)
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118 | int mbedtls_internal_md4_process( mbedtls_md4_context *ctx,
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119 | const unsigned char data[64] )
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120 | {
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121 | uint32_t X[16], A, B, C, D;
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122 |
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123 | GET_UINT32_LE( X[ 0], data, 0 );
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124 | GET_UINT32_LE( X[ 1], data, 4 );
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125 | GET_UINT32_LE( X[ 2], data, 8 );
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126 | GET_UINT32_LE( X[ 3], data, 12 );
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127 | GET_UINT32_LE( X[ 4], data, 16 );
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128 | GET_UINT32_LE( X[ 5], data, 20 );
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129 | GET_UINT32_LE( X[ 6], data, 24 );
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130 | GET_UINT32_LE( X[ 7], data, 28 );
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131 | GET_UINT32_LE( X[ 8], data, 32 );
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132 | GET_UINT32_LE( X[ 9], data, 36 );
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133 | GET_UINT32_LE( X[10], data, 40 );
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134 | GET_UINT32_LE( X[11], data, 44 );
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135 | GET_UINT32_LE( X[12], data, 48 );
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136 | GET_UINT32_LE( X[13], data, 52 );
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137 | GET_UINT32_LE( X[14], data, 56 );
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138 | GET_UINT32_LE( X[15], data, 60 );
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139 |
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140 | #define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
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141 |
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142 | A = ctx->state[0];
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143 | B = ctx->state[1];
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144 | C = ctx->state[2];
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145 | D = ctx->state[3];
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146 |
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147 | #define F(x, y, z) ((x & y) | ((~x) & z))
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148 | #define P(a,b,c,d,x,s) { a += F(b,c,d) + x; a = S(a,s); }
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149 |
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150 | P( A, B, C, D, X[ 0], 3 );
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151 | P( D, A, B, C, X[ 1], 7 );
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152 | P( C, D, A, B, X[ 2], 11 );
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153 | P( B, C, D, A, X[ 3], 19 );
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154 | P( A, B, C, D, X[ 4], 3 );
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155 | P( D, A, B, C, X[ 5], 7 );
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156 | P( C, D, A, B, X[ 6], 11 );
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157 | P( B, C, D, A, X[ 7], 19 );
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158 | P( A, B, C, D, X[ 8], 3 );
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159 | P( D, A, B, C, X[ 9], 7 );
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160 | P( C, D, A, B, X[10], 11 );
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161 | P( B, C, D, A, X[11], 19 );
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162 | P( A, B, C, D, X[12], 3 );
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163 | P( D, A, B, C, X[13], 7 );
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164 | P( C, D, A, B, X[14], 11 );
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165 | P( B, C, D, A, X[15], 19 );
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166 |
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167 | #undef P
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168 | #undef F
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169 |
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170 | #define F(x,y,z) ((x & y) | (x & z) | (y & z))
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171 | #define P(a,b,c,d,x,s) { a += F(b,c,d) + x + 0x5A827999; a = S(a,s); }
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172 |
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173 | P( A, B, C, D, X[ 0], 3 );
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174 | P( D, A, B, C, X[ 4], 5 );
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175 | P( C, D, A, B, X[ 8], 9 );
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176 | P( B, C, D, A, X[12], 13 );
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177 | P( A, B, C, D, X[ 1], 3 );
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178 | P( D, A, B, C, X[ 5], 5 );
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179 | P( C, D, A, B, X[ 9], 9 );
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180 | P( B, C, D, A, X[13], 13 );
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181 | P( A, B, C, D, X[ 2], 3 );
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182 | P( D, A, B, C, X[ 6], 5 );
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183 | P( C, D, A, B, X[10], 9 );
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184 | P( B, C, D, A, X[14], 13 );
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185 | P( A, B, C, D, X[ 3], 3 );
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186 | P( D, A, B, C, X[ 7], 5 );
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187 | P( C, D, A, B, X[11], 9 );
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188 | P( B, C, D, A, X[15], 13 );
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189 |
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190 | #undef P
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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 | #define P(a,b,c,d,x,s) { a += F(b,c,d) + x + 0x6ED9EBA1; a = S(a,s); }
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195 |
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196 | P( A, B, C, D, X[ 0], 3 );
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197 | P( D, A, B, C, X[ 8], 9 );
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198 | P( C, D, A, B, X[ 4], 11 );
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199 | P( B, C, D, A, X[12], 15 );
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200 | P( A, B, C, D, X[ 2], 3 );
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201 | P( D, A, B, C, X[10], 9 );
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202 | P( C, D, A, B, X[ 6], 11 );
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203 | P( B, C, D, A, X[14], 15 );
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204 | P( A, B, C, D, X[ 1], 3 );
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205 | P( D, A, B, C, X[ 9], 9 );
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206 | P( C, D, A, B, X[ 5], 11 );
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207 | P( B, C, D, A, X[13], 15 );
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208 | P( A, B, C, D, X[ 3], 3 );
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209 | P( D, A, B, C, X[11], 9 );
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210 | P( C, D, A, B, X[ 7], 11 );
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211 | P( B, C, D, A, X[15], 15 );
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212 |
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213 | #undef F
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214 | #undef P
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215 |
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216 | ctx->state[0] += A;
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217 | ctx->state[1] += B;
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218 | ctx->state[2] += C;
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219 | ctx->state[3] += D;
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220 |
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221 | return( 0 );
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222 | }
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223 |
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224 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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225 | void mbedtls_md4_process( mbedtls_md4_context *ctx,
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226 | const unsigned char data[64] )
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227 | {
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228 | mbedtls_internal_md4_process( ctx, data );
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229 | }
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230 | #endif
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231 | #endif /* !MBEDTLS_MD4_PROCESS_ALT */
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232 |
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233 | /*
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234 | * MD4 process buffer
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235 | */
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236 | int mbedtls_md4_update_ret( mbedtls_md4_context *ctx,
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237 | const unsigned char *input,
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238 | size_t ilen )
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239 | {
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240 | int ret;
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241 | size_t fill;
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242 | uint32_t left;
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243 |
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244 | if( ilen == 0 )
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245 | return( 0 );
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246 |
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247 | left = ctx->total[0] & 0x3F;
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248 | fill = 64 - left;
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249 |
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250 | ctx->total[0] += (uint32_t) ilen;
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251 | ctx->total[0] &= 0xFFFFFFFF;
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252 |
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253 | if( ctx->total[0] < (uint32_t) ilen )
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254 | ctx->total[1]++;
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255 |
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256 | if( left && ilen >= fill )
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257 | {
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258 | memcpy( (void *) (ctx->buffer + left),
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259 | (void *) input, fill );
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260 |
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261 | if( ( ret = mbedtls_internal_md4_process( ctx, ctx->buffer ) ) != 0 )
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262 | return( ret );
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263 |
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264 | input += fill;
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265 | ilen -= fill;
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266 | left = 0;
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267 | }
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268 |
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269 | while( ilen >= 64 )
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270 | {
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271 | if( ( ret = mbedtls_internal_md4_process( ctx, input ) ) != 0 )
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272 | return( ret );
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273 |
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274 | input += 64;
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275 | ilen -= 64;
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276 | }
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277 |
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278 | if( ilen > 0 )
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279 | {
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280 | memcpy( (void *) (ctx->buffer + left),
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281 | (void *) input, ilen );
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282 | }
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283 |
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284 | return( 0 );
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285 | }
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286 |
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287 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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288 | void mbedtls_md4_update( mbedtls_md4_context *ctx,
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289 | const unsigned char *input,
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290 | size_t ilen )
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291 | {
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292 | mbedtls_md4_update_ret( ctx, input, ilen );
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293 | }
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294 | #endif
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295 |
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296 | static const unsigned char md4_padding[64] =
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297 | {
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298 | 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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299 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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300 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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301 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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302 | };
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303 |
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304 | /*
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305 | * MD4 final digest
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306 | */
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307 | int mbedtls_md4_finish_ret( mbedtls_md4_context *ctx,
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308 | unsigned char output[16] )
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309 | {
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310 | int ret;
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311 | uint32_t last, padn;
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312 | uint32_t high, low;
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313 | unsigned char msglen[8];
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314 |
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315 | high = ( ctx->total[0] >> 29 )
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316 | | ( ctx->total[1] << 3 );
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317 | low = ( ctx->total[0] << 3 );
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318 |
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319 | PUT_UINT32_LE( low, msglen, 0 );
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320 | PUT_UINT32_LE( high, msglen, 4 );
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321 |
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322 | last = ctx->total[0] & 0x3F;
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323 | padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
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324 |
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325 | ret = mbedtls_md4_update_ret( ctx, (unsigned char *)md4_padding, padn );
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326 | if( ret != 0 )
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327 | return( ret );
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328 |
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329 | if( ( ret = mbedtls_md4_update_ret( ctx, msglen, 8 ) ) != 0 )
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330 | return( ret );
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331 |
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332 |
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333 | PUT_UINT32_LE( ctx->state[0], output, 0 );
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334 | PUT_UINT32_LE( ctx->state[1], output, 4 );
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335 | PUT_UINT32_LE( ctx->state[2], output, 8 );
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336 | PUT_UINT32_LE( ctx->state[3], output, 12 );
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337 |
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338 | return( 0 );
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339 | }
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340 |
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341 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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342 | void mbedtls_md4_finish( mbedtls_md4_context *ctx,
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343 | unsigned char output[16] )
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344 | {
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345 | mbedtls_md4_finish_ret( ctx, output );
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346 | }
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347 | #endif
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348 |
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349 | #endif /* !MBEDTLS_MD4_ALT */
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350 |
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351 | /*
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352 | * output = MD4( input buffer )
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353 | */
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354 | int mbedtls_md4_ret( const unsigned char *input,
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355 | size_t ilen,
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356 | unsigned char output[16] )
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357 | {
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358 | int ret;
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359 | mbedtls_md4_context ctx;
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360 |
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361 | mbedtls_md4_init( &ctx );
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362 |
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363 | if( ( ret = mbedtls_md4_starts_ret( &ctx ) ) != 0 )
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364 | goto exit;
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365 |
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366 | if( ( ret = mbedtls_md4_update_ret( &ctx, input, ilen ) ) != 0 )
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367 | goto exit;
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368 |
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369 | if( ( ret = mbedtls_md4_finish_ret( &ctx, output ) ) != 0 )
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370 | goto exit;
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371 |
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372 | exit:
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373 | mbedtls_md4_free( &ctx );
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374 |
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375 | return( ret );
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376 | }
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377 |
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378 | #if !defined(MBEDTLS_DEPRECATED_REMOVED)
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379 | void mbedtls_md4( const unsigned char *input,
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380 | size_t ilen,
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381 | unsigned char output[16] )
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382 | {
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383 | mbedtls_md4_ret( input, ilen, output );
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384 | }
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385 | #endif
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386 |
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387 | #if defined(MBEDTLS_SELF_TEST)
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388 |
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389 | /*
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390 | * RFC 1320 test vectors
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391 | */
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392 | static const unsigned char md4_test_str[7][81] =
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393 | {
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394 | { "" },
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395 | { "a" },
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396 | { "abc" },
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397 | { "message digest" },
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398 | { "abcdefghijklmnopqrstuvwxyz" },
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399 | { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
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400 | { "12345678901234567890123456789012345678901234567890123456789012"
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401 | "345678901234567890" }
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402 | };
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403 |
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404 | static const size_t md4_test_strlen[7] =
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405 | {
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406 | 0, 1, 3, 14, 26, 62, 80
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407 | };
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408 |
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409 | static const unsigned char md4_test_sum[7][16] =
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410 | {
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411 | { 0x31, 0xD6, 0xCF, 0xE0, 0xD1, 0x6A, 0xE9, 0x31,
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412 | 0xB7, 0x3C, 0x59, 0xD7, 0xE0, 0xC0, 0x89, 0xC0 },
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413 | { 0xBD, 0xE5, 0x2C, 0xB3, 0x1D, 0xE3, 0x3E, 0x46,
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414 | 0x24, 0x5E, 0x05, 0xFB, 0xDB, 0xD6, 0xFB, 0x24 },
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415 | { 0xA4, 0x48, 0x01, 0x7A, 0xAF, 0x21, 0xD8, 0x52,
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416 | 0x5F, 0xC1, 0x0A, 0xE8, 0x7A, 0xA6, 0x72, 0x9D },
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417 | { 0xD9, 0x13, 0x0A, 0x81, 0x64, 0x54, 0x9F, 0xE8,
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418 | 0x18, 0x87, 0x48, 0x06, 0xE1, 0xC7, 0x01, 0x4B },
|
---|
419 | { 0xD7, 0x9E, 0x1C, 0x30, 0x8A, 0xA5, 0xBB, 0xCD,
|
---|
420 | 0xEE, 0xA8, 0xED, 0x63, 0xDF, 0x41, 0x2D, 0xA9 },
|
---|
421 | { 0x04, 0x3F, 0x85, 0x82, 0xF2, 0x41, 0xDB, 0x35,
|
---|
422 | 0x1C, 0xE6, 0x27, 0xE1, 0x53, 0xE7, 0xF0, 0xE4 },
|
---|
423 | { 0xE3, 0x3B, 0x4D, 0xDC, 0x9C, 0x38, 0xF2, 0x19,
|
---|
424 | 0x9C, 0x3E, 0x7B, 0x16, 0x4F, 0xCC, 0x05, 0x36 }
|
---|
425 | };
|
---|
426 |
|
---|
427 | /*
|
---|
428 | * Checkup routine
|
---|
429 | */
|
---|
430 | int mbedtls_md4_self_test( int verbose )
|
---|
431 | {
|
---|
432 | int i, ret = 0;
|
---|
433 | unsigned char md4sum[16];
|
---|
434 |
|
---|
435 | for( i = 0; i < 7; i++ )
|
---|
436 | {
|
---|
437 | if( verbose != 0 )
|
---|
438 | mbedtls_printf( " MD4 test #%d: ", i + 1 );
|
---|
439 |
|
---|
440 | ret = mbedtls_md4_ret( md4_test_str[i], md4_test_strlen[i], md4sum );
|
---|
441 | if( ret != 0 )
|
---|
442 | goto fail;
|
---|
443 |
|
---|
444 | if( memcmp( md4sum, md4_test_sum[i], 16 ) != 0 )
|
---|
445 | {
|
---|
446 | ret = 1;
|
---|
447 | goto fail;
|
---|
448 | }
|
---|
449 |
|
---|
450 | if( verbose != 0 )
|
---|
451 | mbedtls_printf( "passed\n" );
|
---|
452 | }
|
---|
453 |
|
---|
454 | if( verbose != 0 )
|
---|
455 | mbedtls_printf( "\n" );
|
---|
456 |
|
---|
457 | return( 0 );
|
---|
458 |
|
---|
459 | fail:
|
---|
460 | if( verbose != 0 )
|
---|
461 | mbedtls_printf( "failed\n" );
|
---|
462 |
|
---|
463 | return( ret );
|
---|
464 | }
|
---|
465 |
|
---|
466 | #endif /* MBEDTLS_SELF_TEST */
|
---|
467 |
|
---|
468 | #endif /* MBEDTLS_MD4_C */
|
---|