1 | /**
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2 | * \file chacha20.c
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3 | *
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4 | * \brief ChaCha20 cipher.
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5 | *
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6 | * \author Daniel King <damaki.gh@gmail.com>
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7 | *
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8 | * Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
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9 | * SPDX-License-Identifier: Apache-2.0
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10 | *
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11 | * Licensed under the Apache License, Version 2.0 (the "License"); you may
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12 | * not use this file except in compliance with the License.
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13 | * You may obtain a copy of the License at
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14 | *
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15 | * http://www.apache.org/licenses/LICENSE-2.0
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16 | *
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17 | * Unless required by applicable law or agreed to in writing, software
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18 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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19 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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20 | * See the License for the specific language governing permissions and
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21 | * limitations under the License.
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22 | *
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23 | * This file is part of mbed TLS (https://tls.mbed.org)
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24 | */
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25 |
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26 | #if !defined(MBEDTLS_CONFIG_FILE)
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27 | #include "mbedtls/config.h"
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28 | #else
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29 | #include MBEDTLS_CONFIG_FILE
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30 | #endif
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31 |
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32 | #if defined(MBEDTLS_CHACHA20_C)
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33 |
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34 | #include "mbedtls/chacha20.h"
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35 | #include "mbedtls/platform_util.h"
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36 |
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37 | #include <stddef.h>
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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_CHACHA20_ALT)
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50 |
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51 | #if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
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52 | !defined(inline) && !defined(__cplusplus)
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53 | #define inline __inline
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54 | #endif
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55 |
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56 | /* Parameter validation macros */
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57 | #define CHACHA20_VALIDATE_RET( cond ) \
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58 | MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA )
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59 | #define CHACHA20_VALIDATE( cond ) \
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60 | MBEDTLS_INTERNAL_VALIDATE( cond )
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61 |
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62 | #define BYTES_TO_U32_LE( data, offset ) \
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63 | ( (uint32_t) data[offset] \
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64 | | (uint32_t) ( (uint32_t) data[( offset ) + 1] << 8 ) \
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65 | | (uint32_t) ( (uint32_t) data[( offset ) + 2] << 16 ) \
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66 | | (uint32_t) ( (uint32_t) data[( offset ) + 3] << 24 ) \
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67 | )
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68 |
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69 | #define ROTL32( value, amount ) \
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70 | ( (uint32_t) ( value << amount ) | ( value >> ( 32 - amount ) ) )
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71 |
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72 | #define CHACHA20_CTR_INDEX ( 12U )
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73 |
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74 | #define CHACHA20_BLOCK_SIZE_BYTES ( 4U * 16U )
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75 |
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76 | /**
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77 | * \brief ChaCha20 quarter round operation.
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78 | *
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79 | * The quarter round is defined as follows (from RFC 7539):
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80 | * 1. a += b; d ^= a; d <<<= 16;
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81 | * 2. c += d; b ^= c; b <<<= 12;
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82 | * 3. a += b; d ^= a; d <<<= 8;
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83 | * 4. c += d; b ^= c; b <<<= 7;
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84 | *
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85 | * \param state ChaCha20 state to modify.
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86 | * \param a The index of 'a' in the state.
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87 | * \param b The index of 'b' in the state.
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88 | * \param c The index of 'c' in the state.
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89 | * \param d The index of 'd' in the state.
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90 | */
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91 | static inline void chacha20_quarter_round( uint32_t state[16],
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92 | size_t a,
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93 | size_t b,
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94 | size_t c,
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95 | size_t d )
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96 | {
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97 | /* a += b; d ^= a; d <<<= 16; */
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98 | state[a] += state[b];
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99 | state[d] ^= state[a];
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100 | state[d] = ROTL32( state[d], 16 );
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101 |
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102 | /* c += d; b ^= c; b <<<= 12 */
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103 | state[c] += state[d];
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104 | state[b] ^= state[c];
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105 | state[b] = ROTL32( state[b], 12 );
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106 |
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107 | /* a += b; d ^= a; d <<<= 8; */
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108 | state[a] += state[b];
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109 | state[d] ^= state[a];
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110 | state[d] = ROTL32( state[d], 8 );
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111 |
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112 | /* c += d; b ^= c; b <<<= 7; */
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113 | state[c] += state[d];
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114 | state[b] ^= state[c];
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115 | state[b] = ROTL32( state[b], 7 );
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116 | }
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117 |
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118 | /**
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119 | * \brief Perform the ChaCha20 inner block operation.
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120 | *
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121 | * This function performs two rounds: the column round and the
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122 | * diagonal round.
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123 | *
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124 | * \param state The ChaCha20 state to update.
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125 | */
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126 | static void chacha20_inner_block( uint32_t state[16] )
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127 | {
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128 | chacha20_quarter_round( state, 0, 4, 8, 12 );
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129 | chacha20_quarter_round( state, 1, 5, 9, 13 );
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130 | chacha20_quarter_round( state, 2, 6, 10, 14 );
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131 | chacha20_quarter_round( state, 3, 7, 11, 15 );
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132 |
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133 | chacha20_quarter_round( state, 0, 5, 10, 15 );
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134 | chacha20_quarter_round( state, 1, 6, 11, 12 );
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135 | chacha20_quarter_round( state, 2, 7, 8, 13 );
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136 | chacha20_quarter_round( state, 3, 4, 9, 14 );
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137 | }
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138 |
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139 | /**
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140 | * \brief Generates a keystream block.
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141 | *
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142 | * \param initial_state The initial ChaCha20 state (key, nonce, counter).
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143 | * \param keystream Generated keystream bytes are written to this buffer.
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144 | */
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145 | static void chacha20_block( const uint32_t initial_state[16],
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146 | unsigned char keystream[64] )
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147 | {
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148 | uint32_t working_state[16];
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149 | size_t i;
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150 |
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151 | memcpy( working_state,
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152 | initial_state,
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153 | CHACHA20_BLOCK_SIZE_BYTES );
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154 |
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155 | for( i = 0U; i < 10U; i++ )
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156 | chacha20_inner_block( working_state );
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157 |
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158 | working_state[ 0] += initial_state[ 0];
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159 | working_state[ 1] += initial_state[ 1];
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160 | working_state[ 2] += initial_state[ 2];
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161 | working_state[ 3] += initial_state[ 3];
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162 | working_state[ 4] += initial_state[ 4];
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163 | working_state[ 5] += initial_state[ 5];
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164 | working_state[ 6] += initial_state[ 6];
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165 | working_state[ 7] += initial_state[ 7];
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166 | working_state[ 8] += initial_state[ 8];
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167 | working_state[ 9] += initial_state[ 9];
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168 | working_state[10] += initial_state[10];
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169 | working_state[11] += initial_state[11];
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170 | working_state[12] += initial_state[12];
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171 | working_state[13] += initial_state[13];
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172 | working_state[14] += initial_state[14];
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173 | working_state[15] += initial_state[15];
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174 |
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175 | for( i = 0U; i < 16; i++ )
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176 | {
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177 | size_t offset = i * 4U;
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178 |
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179 | keystream[offset ] = (unsigned char)( working_state[i] );
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180 | keystream[offset + 1U] = (unsigned char)( working_state[i] >> 8 );
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181 | keystream[offset + 2U] = (unsigned char)( working_state[i] >> 16 );
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182 | keystream[offset + 3U] = (unsigned char)( working_state[i] >> 24 );
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183 | }
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184 |
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185 | mbedtls_platform_zeroize( working_state, sizeof( working_state ) );
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186 | }
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187 |
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188 | void mbedtls_chacha20_init( mbedtls_chacha20_context *ctx )
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189 | {
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190 | CHACHA20_VALIDATE( ctx != NULL );
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191 |
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192 | mbedtls_platform_zeroize( ctx->state, sizeof( ctx->state ) );
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193 | mbedtls_platform_zeroize( ctx->keystream8, sizeof( ctx->keystream8 ) );
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194 |
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195 | /* Initially, there's no keystream bytes available */
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196 | ctx->keystream_bytes_used = CHACHA20_BLOCK_SIZE_BYTES;
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197 | }
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198 |
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199 | void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx )
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200 | {
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201 | if( ctx != NULL )
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202 | {
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203 | mbedtls_platform_zeroize( ctx, sizeof( mbedtls_chacha20_context ) );
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204 | }
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205 | }
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206 |
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207 | int mbedtls_chacha20_setkey( mbedtls_chacha20_context *ctx,
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208 | const unsigned char key[32] )
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209 | {
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210 | CHACHA20_VALIDATE_RET( ctx != NULL );
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211 | CHACHA20_VALIDATE_RET( key != NULL );
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212 |
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213 | /* ChaCha20 constants - the string "expand 32-byte k" */
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214 | ctx->state[0] = 0x61707865;
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215 | ctx->state[1] = 0x3320646e;
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216 | ctx->state[2] = 0x79622d32;
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217 | ctx->state[3] = 0x6b206574;
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218 |
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219 | /* Set key */
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220 | ctx->state[4] = BYTES_TO_U32_LE( key, 0 );
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221 | ctx->state[5] = BYTES_TO_U32_LE( key, 4 );
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222 | ctx->state[6] = BYTES_TO_U32_LE( key, 8 );
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223 | ctx->state[7] = BYTES_TO_U32_LE( key, 12 );
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224 | ctx->state[8] = BYTES_TO_U32_LE( key, 16 );
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225 | ctx->state[9] = BYTES_TO_U32_LE( key, 20 );
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226 | ctx->state[10] = BYTES_TO_U32_LE( key, 24 );
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227 | ctx->state[11] = BYTES_TO_U32_LE( key, 28 );
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228 |
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229 | return( 0 );
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230 | }
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231 |
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232 | int mbedtls_chacha20_starts( mbedtls_chacha20_context* ctx,
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233 | const unsigned char nonce[12],
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234 | uint32_t counter )
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235 | {
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236 | CHACHA20_VALIDATE_RET( ctx != NULL );
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237 | CHACHA20_VALIDATE_RET( nonce != NULL );
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238 |
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239 | /* Counter */
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240 | ctx->state[12] = counter;
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241 |
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242 | /* Nonce */
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243 | ctx->state[13] = BYTES_TO_U32_LE( nonce, 0 );
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244 | ctx->state[14] = BYTES_TO_U32_LE( nonce, 4 );
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245 | ctx->state[15] = BYTES_TO_U32_LE( nonce, 8 );
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246 |
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247 | mbedtls_platform_zeroize( ctx->keystream8, sizeof( ctx->keystream8 ) );
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248 |
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249 | /* Initially, there's no keystream bytes available */
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250 | ctx->keystream_bytes_used = CHACHA20_BLOCK_SIZE_BYTES;
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251 |
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252 | return( 0 );
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253 | }
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254 |
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255 | int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx,
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256 | size_t size,
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257 | const unsigned char *input,
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258 | unsigned char *output )
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259 | {
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260 | size_t offset = 0U;
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261 | size_t i;
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262 |
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263 | CHACHA20_VALIDATE_RET( ctx != NULL );
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264 | CHACHA20_VALIDATE_RET( size == 0 || input != NULL );
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265 | CHACHA20_VALIDATE_RET( size == 0 || output != NULL );
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266 |
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267 | /* Use leftover keystream bytes, if available */
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268 | while( size > 0U && ctx->keystream_bytes_used < CHACHA20_BLOCK_SIZE_BYTES )
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269 | {
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270 | output[offset] = input[offset]
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271 | ^ ctx->keystream8[ctx->keystream_bytes_used];
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272 |
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273 | ctx->keystream_bytes_used++;
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274 | offset++;
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275 | size--;
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276 | }
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277 |
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278 | /* Process full blocks */
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279 | while( size >= CHACHA20_BLOCK_SIZE_BYTES )
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280 | {
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281 | /* Generate new keystream block and increment counter */
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282 | chacha20_block( ctx->state, ctx->keystream8 );
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283 | ctx->state[CHACHA20_CTR_INDEX]++;
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284 |
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285 | for( i = 0U; i < 64U; i += 8U )
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286 | {
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287 | output[offset + i ] = input[offset + i ] ^ ctx->keystream8[i ];
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288 | output[offset + i+1] = input[offset + i+1] ^ ctx->keystream8[i+1];
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289 | output[offset + i+2] = input[offset + i+2] ^ ctx->keystream8[i+2];
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290 | output[offset + i+3] = input[offset + i+3] ^ ctx->keystream8[i+3];
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291 | output[offset + i+4] = input[offset + i+4] ^ ctx->keystream8[i+4];
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292 | output[offset + i+5] = input[offset + i+5] ^ ctx->keystream8[i+5];
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293 | output[offset + i+6] = input[offset + i+6] ^ ctx->keystream8[i+6];
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294 | output[offset + i+7] = input[offset + i+7] ^ ctx->keystream8[i+7];
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295 | }
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296 |
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297 | offset += CHACHA20_BLOCK_SIZE_BYTES;
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298 | size -= CHACHA20_BLOCK_SIZE_BYTES;
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299 | }
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300 |
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301 | /* Last (partial) block */
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302 | if( size > 0U )
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303 | {
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304 | /* Generate new keystream block and increment counter */
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305 | chacha20_block( ctx->state, ctx->keystream8 );
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306 | ctx->state[CHACHA20_CTR_INDEX]++;
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307 |
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308 | for( i = 0U; i < size; i++)
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309 | {
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310 | output[offset + i] = input[offset + i] ^ ctx->keystream8[i];
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311 | }
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312 |
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313 | ctx->keystream_bytes_used = size;
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314 |
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315 | }
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316 |
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317 | return( 0 );
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318 | }
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319 |
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320 | int mbedtls_chacha20_crypt( const unsigned char key[32],
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321 | const unsigned char nonce[12],
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322 | uint32_t counter,
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323 | size_t data_len,
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324 | const unsigned char* input,
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325 | unsigned char* output )
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326 | {
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327 | mbedtls_chacha20_context ctx;
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328 | int ret;
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329 |
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330 | CHACHA20_VALIDATE_RET( key != NULL );
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331 | CHACHA20_VALIDATE_RET( nonce != NULL );
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332 | CHACHA20_VALIDATE_RET( data_len == 0 || input != NULL );
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333 | CHACHA20_VALIDATE_RET( data_len == 0 || output != NULL );
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334 |
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335 | mbedtls_chacha20_init( &ctx );
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336 |
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337 | ret = mbedtls_chacha20_setkey( &ctx, key );
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338 | if( ret != 0 )
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339 | goto cleanup;
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340 |
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341 | ret = mbedtls_chacha20_starts( &ctx, nonce, counter );
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342 | if( ret != 0 )
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343 | goto cleanup;
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344 |
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345 | ret = mbedtls_chacha20_update( &ctx, data_len, input, output );
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346 |
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347 | cleanup:
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348 | mbedtls_chacha20_free( &ctx );
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349 | return( ret );
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350 | }
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351 |
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352 | #endif /* !MBEDTLS_CHACHA20_ALT */
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353 |
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354 | #if defined(MBEDTLS_SELF_TEST)
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355 |
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356 | static const unsigned char test_keys[2][32] =
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357 | {
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358 | {
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359 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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360 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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361 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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362 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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363 | },
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364 | {
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365 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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366 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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367 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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368 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01
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369 | }
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370 | };
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371 |
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372 | static const unsigned char test_nonces[2][12] =
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373 | {
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374 | {
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375 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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376 | 0x00, 0x00, 0x00, 0x00
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377 | },
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378 | {
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379 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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380 | 0x00, 0x00, 0x00, 0x02
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381 | }
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382 | };
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383 |
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384 | static const uint32_t test_counters[2] =
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385 | {
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386 | 0U,
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387 | 1U
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388 | };
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389 |
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390 | static const unsigned char test_input[2][375] =
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391 | {
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392 | {
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393 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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394 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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395 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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396 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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397 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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398 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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399 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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400 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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401 | },
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402 | {
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403 | 0x41, 0x6e, 0x79, 0x20, 0x73, 0x75, 0x62, 0x6d,
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404 | 0x69, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x20, 0x74,
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---|
405 | 0x6f, 0x20, 0x74, 0x68, 0x65, 0x20, 0x49, 0x45,
|
---|
406 | 0x54, 0x46, 0x20, 0x69, 0x6e, 0x74, 0x65, 0x6e,
|
---|
407 | 0x64, 0x65, 0x64, 0x20, 0x62, 0x79, 0x20, 0x74,
|
---|
408 | 0x68, 0x65, 0x20, 0x43, 0x6f, 0x6e, 0x74, 0x72,
|
---|
409 | 0x69, 0x62, 0x75, 0x74, 0x6f, 0x72, 0x20, 0x66,
|
---|
410 | 0x6f, 0x72, 0x20, 0x70, 0x75, 0x62, 0x6c, 0x69,
|
---|
411 | 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61,
|
---|
412 | 0x73, 0x20, 0x61, 0x6c, 0x6c, 0x20, 0x6f, 0x72,
|
---|
413 | 0x20, 0x70, 0x61, 0x72, 0x74, 0x20, 0x6f, 0x66,
|
---|
414 | 0x20, 0x61, 0x6e, 0x20, 0x49, 0x45, 0x54, 0x46,
|
---|
415 | 0x20, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65,
|
---|
416 | 0x74, 0x2d, 0x44, 0x72, 0x61, 0x66, 0x74, 0x20,
|
---|
417 | 0x6f, 0x72, 0x20, 0x52, 0x46, 0x43, 0x20, 0x61,
|
---|
418 | 0x6e, 0x64, 0x20, 0x61, 0x6e, 0x79, 0x20, 0x73,
|
---|
419 | 0x74, 0x61, 0x74, 0x65, 0x6d, 0x65, 0x6e, 0x74,
|
---|
420 | 0x20, 0x6d, 0x61, 0x64, 0x65, 0x20, 0x77, 0x69,
|
---|
421 | 0x74, 0x68, 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65,
|
---|
422 | 0x20, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74,
|
---|
423 | 0x20, 0x6f, 0x66, 0x20, 0x61, 0x6e, 0x20, 0x49,
|
---|
424 | 0x45, 0x54, 0x46, 0x20, 0x61, 0x63, 0x74, 0x69,
|
---|
425 | 0x76, 0x69, 0x74, 0x79, 0x20, 0x69, 0x73, 0x20,
|
---|
426 | 0x63, 0x6f, 0x6e, 0x73, 0x69, 0x64, 0x65, 0x72,
|
---|
427 | 0x65, 0x64, 0x20, 0x61, 0x6e, 0x20, 0x22, 0x49,
|
---|
428 | 0x45, 0x54, 0x46, 0x20, 0x43, 0x6f, 0x6e, 0x74,
|
---|
429 | 0x72, 0x69, 0x62, 0x75, 0x74, 0x69, 0x6f, 0x6e,
|
---|
430 | 0x22, 0x2e, 0x20, 0x53, 0x75, 0x63, 0x68, 0x20,
|
---|
431 | 0x73, 0x74, 0x61, 0x74, 0x65, 0x6d, 0x65, 0x6e,
|
---|
432 | 0x74, 0x73, 0x20, 0x69, 0x6e, 0x63, 0x6c, 0x75,
|
---|
433 | 0x64, 0x65, 0x20, 0x6f, 0x72, 0x61, 0x6c, 0x20,
|
---|
434 | 0x73, 0x74, 0x61, 0x74, 0x65, 0x6d, 0x65, 0x6e,
|
---|
435 | 0x74, 0x73, 0x20, 0x69, 0x6e, 0x20, 0x49, 0x45,
|
---|
436 | 0x54, 0x46, 0x20, 0x73, 0x65, 0x73, 0x73, 0x69,
|
---|
437 | 0x6f, 0x6e, 0x73, 0x2c, 0x20, 0x61, 0x73, 0x20,
|
---|
438 | 0x77, 0x65, 0x6c, 0x6c, 0x20, 0x61, 0x73, 0x20,
|
---|
439 | 0x77, 0x72, 0x69, 0x74, 0x74, 0x65, 0x6e, 0x20,
|
---|
440 | 0x61, 0x6e, 0x64, 0x20, 0x65, 0x6c, 0x65, 0x63,
|
---|
441 | 0x74, 0x72, 0x6f, 0x6e, 0x69, 0x63, 0x20, 0x63,
|
---|
442 | 0x6f, 0x6d, 0x6d, 0x75, 0x6e, 0x69, 0x63, 0x61,
|
---|
443 | 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x20, 0x6d, 0x61,
|
---|
444 | 0x64, 0x65, 0x20, 0x61, 0x74, 0x20, 0x61, 0x6e,
|
---|
445 | 0x79, 0x20, 0x74, 0x69, 0x6d, 0x65, 0x20, 0x6f,
|
---|
446 | 0x72, 0x20, 0x70, 0x6c, 0x61, 0x63, 0x65, 0x2c,
|
---|
447 | 0x20, 0x77, 0x68, 0x69, 0x63, 0x68, 0x20, 0x61,
|
---|
448 | 0x72, 0x65, 0x20, 0x61, 0x64, 0x64, 0x72, 0x65,
|
---|
449 | 0x73, 0x73, 0x65, 0x64, 0x20, 0x74, 0x6f
|
---|
450 | }
|
---|
451 | };
|
---|
452 |
|
---|
453 | static const unsigned char test_output[2][375] =
|
---|
454 | {
|
---|
455 | {
|
---|
456 | 0x76, 0xb8, 0xe0, 0xad, 0xa0, 0xf1, 0x3d, 0x90,
|
---|
457 | 0x40, 0x5d, 0x6a, 0xe5, 0x53, 0x86, 0xbd, 0x28,
|
---|
458 | 0xbd, 0xd2, 0x19, 0xb8, 0xa0, 0x8d, 0xed, 0x1a,
|
---|
459 | 0xa8, 0x36, 0xef, 0xcc, 0x8b, 0x77, 0x0d, 0xc7,
|
---|
460 | 0xda, 0x41, 0x59, 0x7c, 0x51, 0x57, 0x48, 0x8d,
|
---|
461 | 0x77, 0x24, 0xe0, 0x3f, 0xb8, 0xd8, 0x4a, 0x37,
|
---|
462 | 0x6a, 0x43, 0xb8, 0xf4, 0x15, 0x18, 0xa1, 0x1c,
|
---|
463 | 0xc3, 0x87, 0xb6, 0x69, 0xb2, 0xee, 0x65, 0x86
|
---|
464 | },
|
---|
465 | {
|
---|
466 | 0xa3, 0xfb, 0xf0, 0x7d, 0xf3, 0xfa, 0x2f, 0xde,
|
---|
467 | 0x4f, 0x37, 0x6c, 0xa2, 0x3e, 0x82, 0x73, 0x70,
|
---|
468 | 0x41, 0x60, 0x5d, 0x9f, 0x4f, 0x4f, 0x57, 0xbd,
|
---|
469 | 0x8c, 0xff, 0x2c, 0x1d, 0x4b, 0x79, 0x55, 0xec,
|
---|
470 | 0x2a, 0x97, 0x94, 0x8b, 0xd3, 0x72, 0x29, 0x15,
|
---|
471 | 0xc8, 0xf3, 0xd3, 0x37, 0xf7, 0xd3, 0x70, 0x05,
|
---|
472 | 0x0e, 0x9e, 0x96, 0xd6, 0x47, 0xb7, 0xc3, 0x9f,
|
---|
473 | 0x56, 0xe0, 0x31, 0xca, 0x5e, 0xb6, 0x25, 0x0d,
|
---|
474 | 0x40, 0x42, 0xe0, 0x27, 0x85, 0xec, 0xec, 0xfa,
|
---|
475 | 0x4b, 0x4b, 0xb5, 0xe8, 0xea, 0xd0, 0x44, 0x0e,
|
---|
476 | 0x20, 0xb6, 0xe8, 0xdb, 0x09, 0xd8, 0x81, 0xa7,
|
---|
477 | 0xc6, 0x13, 0x2f, 0x42, 0x0e, 0x52, 0x79, 0x50,
|
---|
478 | 0x42, 0xbd, 0xfa, 0x77, 0x73, 0xd8, 0xa9, 0x05,
|
---|
479 | 0x14, 0x47, 0xb3, 0x29, 0x1c, 0xe1, 0x41, 0x1c,
|
---|
480 | 0x68, 0x04, 0x65, 0x55, 0x2a, 0xa6, 0xc4, 0x05,
|
---|
481 | 0xb7, 0x76, 0x4d, 0x5e, 0x87, 0xbe, 0xa8, 0x5a,
|
---|
482 | 0xd0, 0x0f, 0x84, 0x49, 0xed, 0x8f, 0x72, 0xd0,
|
---|
483 | 0xd6, 0x62, 0xab, 0x05, 0x26, 0x91, 0xca, 0x66,
|
---|
484 | 0x42, 0x4b, 0xc8, 0x6d, 0x2d, 0xf8, 0x0e, 0xa4,
|
---|
485 | 0x1f, 0x43, 0xab, 0xf9, 0x37, 0xd3, 0x25, 0x9d,
|
---|
486 | 0xc4, 0xb2, 0xd0, 0xdf, 0xb4, 0x8a, 0x6c, 0x91,
|
---|
487 | 0x39, 0xdd, 0xd7, 0xf7, 0x69, 0x66, 0xe9, 0x28,
|
---|
488 | 0xe6, 0x35, 0x55, 0x3b, 0xa7, 0x6c, 0x5c, 0x87,
|
---|
489 | 0x9d, 0x7b, 0x35, 0xd4, 0x9e, 0xb2, 0xe6, 0x2b,
|
---|
490 | 0x08, 0x71, 0xcd, 0xac, 0x63, 0x89, 0x39, 0xe2,
|
---|
491 | 0x5e, 0x8a, 0x1e, 0x0e, 0xf9, 0xd5, 0x28, 0x0f,
|
---|
492 | 0xa8, 0xca, 0x32, 0x8b, 0x35, 0x1c, 0x3c, 0x76,
|
---|
493 | 0x59, 0x89, 0xcb, 0xcf, 0x3d, 0xaa, 0x8b, 0x6c,
|
---|
494 | 0xcc, 0x3a, 0xaf, 0x9f, 0x39, 0x79, 0xc9, 0x2b,
|
---|
495 | 0x37, 0x20, 0xfc, 0x88, 0xdc, 0x95, 0xed, 0x84,
|
---|
496 | 0xa1, 0xbe, 0x05, 0x9c, 0x64, 0x99, 0xb9, 0xfd,
|
---|
497 | 0xa2, 0x36, 0xe7, 0xe8, 0x18, 0xb0, 0x4b, 0x0b,
|
---|
498 | 0xc3, 0x9c, 0x1e, 0x87, 0x6b, 0x19, 0x3b, 0xfe,
|
---|
499 | 0x55, 0x69, 0x75, 0x3f, 0x88, 0x12, 0x8c, 0xc0,
|
---|
500 | 0x8a, 0xaa, 0x9b, 0x63, 0xd1, 0xa1, 0x6f, 0x80,
|
---|
501 | 0xef, 0x25, 0x54, 0xd7, 0x18, 0x9c, 0x41, 0x1f,
|
---|
502 | 0x58, 0x69, 0xca, 0x52, 0xc5, 0xb8, 0x3f, 0xa3,
|
---|
503 | 0x6f, 0xf2, 0x16, 0xb9, 0xc1, 0xd3, 0x00, 0x62,
|
---|
504 | 0xbe, 0xbc, 0xfd, 0x2d, 0xc5, 0xbc, 0xe0, 0x91,
|
---|
505 | 0x19, 0x34, 0xfd, 0xa7, 0x9a, 0x86, 0xf6, 0xe6,
|
---|
506 | 0x98, 0xce, 0xd7, 0x59, 0xc3, 0xff, 0x9b, 0x64,
|
---|
507 | 0x77, 0x33, 0x8f, 0x3d, 0xa4, 0xf9, 0xcd, 0x85,
|
---|
508 | 0x14, 0xea, 0x99, 0x82, 0xcc, 0xaf, 0xb3, 0x41,
|
---|
509 | 0xb2, 0x38, 0x4d, 0xd9, 0x02, 0xf3, 0xd1, 0xab,
|
---|
510 | 0x7a, 0xc6, 0x1d, 0xd2, 0x9c, 0x6f, 0x21, 0xba,
|
---|
511 | 0x5b, 0x86, 0x2f, 0x37, 0x30, 0xe3, 0x7c, 0xfd,
|
---|
512 | 0xc4, 0xfd, 0x80, 0x6c, 0x22, 0xf2, 0x21
|
---|
513 | }
|
---|
514 | };
|
---|
515 |
|
---|
516 | static const size_t test_lengths[2] =
|
---|
517 | {
|
---|
518 | 64U,
|
---|
519 | 375U
|
---|
520 | };
|
---|
521 |
|
---|
522 | #define ASSERT( cond, args ) \
|
---|
523 | do \
|
---|
524 | { \
|
---|
525 | if( ! ( cond ) ) \
|
---|
526 | { \
|
---|
527 | if( verbose != 0 ) \
|
---|
528 | mbedtls_printf args; \
|
---|
529 | \
|
---|
530 | return( -1 ); \
|
---|
531 | } \
|
---|
532 | } \
|
---|
533 | while( 0 )
|
---|
534 |
|
---|
535 | int mbedtls_chacha20_self_test( int verbose )
|
---|
536 | {
|
---|
537 | unsigned char output[381];
|
---|
538 | unsigned i;
|
---|
539 | int ret;
|
---|
540 |
|
---|
541 | for( i = 0U; i < 2U; i++ )
|
---|
542 | {
|
---|
543 | if( verbose != 0 )
|
---|
544 | mbedtls_printf( " ChaCha20 test %u ", i );
|
---|
545 |
|
---|
546 | ret = mbedtls_chacha20_crypt( test_keys[i],
|
---|
547 | test_nonces[i],
|
---|
548 | test_counters[i],
|
---|
549 | test_lengths[i],
|
---|
550 | test_input[i],
|
---|
551 | output );
|
---|
552 |
|
---|
553 | ASSERT( 0 == ret, ( "error code: %i\n", ret ) );
|
---|
554 |
|
---|
555 | ASSERT( 0 == memcmp( output, test_output[i], test_lengths[i] ),
|
---|
556 | ( "failed (output)\n" ) );
|
---|
557 |
|
---|
558 | if( verbose != 0 )
|
---|
559 | mbedtls_printf( "passed\n" );
|
---|
560 | }
|
---|
561 |
|
---|
562 | if( verbose != 0 )
|
---|
563 | mbedtls_printf( "\n" );
|
---|
564 |
|
---|
565 | return( 0 );
|
---|
566 | }
|
---|
567 |
|
---|
568 | #endif /* MBEDTLS_SELF_TEST */
|
---|
569 |
|
---|
570 | #endif /* !MBEDTLS_CHACHA20_C */
|
---|