1 | /**
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2 | * \file poly1305.c
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3 | *
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4 | * \brief Poly1305 authentication algorithm.
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5 | *
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6 | * Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
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7 | * SPDX-License-Identifier: Apache-2.0
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8 | *
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9 | * Licensed under the Apache License, Version 2.0 (the "License"); you may
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10 | * not use this file except in compliance with the License.
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11 | * You may obtain a copy of the License at
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12 | *
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13 | * http://www.apache.org/licenses/LICENSE-2.0
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14 | *
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15 | * Unless required by applicable law or agreed to in writing, software
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16 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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17 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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18 | * See the License for the specific language governing permissions and
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19 | * limitations under the License.
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20 | *
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21 | * This file is part of mbed TLS (https://tls.mbed.org)
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22 | */
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23 | #if !defined(MBEDTLS_CONFIG_FILE)
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24 | #include "mbedtls/config.h"
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25 | #else
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26 | #include MBEDTLS_CONFIG_FILE
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27 | #endif
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28 |
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29 | #if defined(MBEDTLS_POLY1305_C)
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30 |
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31 | #include "mbedtls/poly1305.h"
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32 | #include "mbedtls/platform_util.h"
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33 |
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34 | #include <string.h>
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35 |
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36 | #if defined(MBEDTLS_SELF_TEST)
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37 | #if defined(MBEDTLS_PLATFORM_C)
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38 | #include "mbedtls/platform.h"
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39 | #else
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40 | #include <stdio.h>
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41 | #define mbedtls_printf printf
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42 | #endif /* MBEDTLS_PLATFORM_C */
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43 | #endif /* MBEDTLS_SELF_TEST */
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44 |
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45 | #if !defined(MBEDTLS_POLY1305_ALT)
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46 |
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47 | #if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
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48 | !defined(inline) && !defined(__cplusplus)
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49 | #define inline __inline
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50 | #endif
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51 |
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52 | /* Parameter validation macros */
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53 | #define POLY1305_VALIDATE_RET( cond ) \
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54 | MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA )
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55 | #define POLY1305_VALIDATE( cond ) \
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56 | MBEDTLS_INTERNAL_VALIDATE( cond )
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57 |
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58 | #define POLY1305_BLOCK_SIZE_BYTES ( 16U )
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59 |
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60 | #define BYTES_TO_U32_LE( data, offset ) \
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61 | ( (uint32_t) data[offset] \
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62 | | (uint32_t) ( (uint32_t) data[( offset ) + 1] << 8 ) \
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63 | | (uint32_t) ( (uint32_t) data[( offset ) + 2] << 16 ) \
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64 | | (uint32_t) ( (uint32_t) data[( offset ) + 3] << 24 ) \
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65 | )
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66 |
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67 | /*
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68 | * Our implementation is tuned for 32-bit platforms with a 64-bit multiplier.
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69 | * However we provided an alternative for platforms without such a multiplier.
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70 | */
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71 | #if defined(MBEDTLS_NO_64BIT_MULTIPLICATION)
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72 | static uint64_t mul64( uint32_t a, uint32_t b )
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73 | {
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74 | /* a = al + 2**16 ah, b = bl + 2**16 bh */
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75 | const uint16_t al = (uint16_t) a;
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76 | const uint16_t bl = (uint16_t) b;
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77 | const uint16_t ah = a >> 16;
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78 | const uint16_t bh = b >> 16;
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79 |
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80 | /* ab = al*bl + 2**16 (ah*bl + bl*bh) + 2**32 ah*bh */
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81 | const uint32_t lo = (uint32_t) al * bl;
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82 | const uint64_t me = (uint64_t)( (uint32_t) ah * bl ) + (uint32_t) al * bh;
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83 | const uint32_t hi = (uint32_t) ah * bh;
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84 |
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85 | return( lo + ( me << 16 ) + ( (uint64_t) hi << 32 ) );
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86 | }
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87 | #else
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88 | static inline uint64_t mul64( uint32_t a, uint32_t b )
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89 | {
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90 | return( (uint64_t) a * b );
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91 | }
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92 | #endif
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93 |
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94 |
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95 | /**
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96 | * \brief Process blocks with Poly1305.
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97 | *
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98 | * \param ctx The Poly1305 context.
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99 | * \param nblocks Number of blocks to process. Note that this
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100 | * function only processes full blocks.
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101 | * \param input Buffer containing the input block(s).
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102 | * \param needs_padding Set to 0 if the padding bit has already been
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103 | * applied to the input data before calling this
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104 | * function. Otherwise, set this parameter to 1.
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105 | */
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106 | static void poly1305_process( mbedtls_poly1305_context *ctx,
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107 | size_t nblocks,
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108 | const unsigned char *input,
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109 | uint32_t needs_padding )
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110 | {
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111 | uint64_t d0, d1, d2, d3;
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112 | uint32_t acc0, acc1, acc2, acc3, acc4;
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113 | uint32_t r0, r1, r2, r3;
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114 | uint32_t rs1, rs2, rs3;
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115 | size_t offset = 0U;
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116 | size_t i;
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117 |
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118 | r0 = ctx->r[0];
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119 | r1 = ctx->r[1];
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120 | r2 = ctx->r[2];
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121 | r3 = ctx->r[3];
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122 |
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123 | rs1 = r1 + ( r1 >> 2U );
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124 | rs2 = r2 + ( r2 >> 2U );
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125 | rs3 = r3 + ( r3 >> 2U );
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126 |
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127 | acc0 = ctx->acc[0];
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128 | acc1 = ctx->acc[1];
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129 | acc2 = ctx->acc[2];
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130 | acc3 = ctx->acc[3];
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131 | acc4 = ctx->acc[4];
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132 |
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133 | /* Process full blocks */
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134 | for( i = 0U; i < nblocks; i++ )
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135 | {
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136 | /* The input block is treated as a 128-bit little-endian integer */
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137 | d0 = BYTES_TO_U32_LE( input, offset + 0 );
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138 | d1 = BYTES_TO_U32_LE( input, offset + 4 );
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139 | d2 = BYTES_TO_U32_LE( input, offset + 8 );
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140 | d3 = BYTES_TO_U32_LE( input, offset + 12 );
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141 |
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142 | /* Compute: acc += (padded) block as a 130-bit integer */
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143 | d0 += (uint64_t) acc0;
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144 | d1 += (uint64_t) acc1 + ( d0 >> 32U );
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145 | d2 += (uint64_t) acc2 + ( d1 >> 32U );
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146 | d3 += (uint64_t) acc3 + ( d2 >> 32U );
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147 | acc0 = (uint32_t) d0;
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148 | acc1 = (uint32_t) d1;
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149 | acc2 = (uint32_t) d2;
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150 | acc3 = (uint32_t) d3;
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151 | acc4 += (uint32_t) ( d3 >> 32U ) + needs_padding;
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152 |
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153 | /* Compute: acc *= r */
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154 | d0 = mul64( acc0, r0 ) +
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155 | mul64( acc1, rs3 ) +
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156 | mul64( acc2, rs2 ) +
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157 | mul64( acc3, rs1 );
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158 | d1 = mul64( acc0, r1 ) +
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159 | mul64( acc1, r0 ) +
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160 | mul64( acc2, rs3 ) +
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161 | mul64( acc3, rs2 ) +
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162 | mul64( acc4, rs1 );
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163 | d2 = mul64( acc0, r2 ) +
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164 | mul64( acc1, r1 ) +
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165 | mul64( acc2, r0 ) +
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166 | mul64( acc3, rs3 ) +
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167 | mul64( acc4, rs2 );
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168 | d3 = mul64( acc0, r3 ) +
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169 | mul64( acc1, r2 ) +
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170 | mul64( acc2, r1 ) +
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171 | mul64( acc3, r0 ) +
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172 | mul64( acc4, rs3 );
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173 | acc4 *= r0;
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174 |
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175 | /* Compute: acc %= (2^130 - 5) (partial remainder) */
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176 | d1 += ( d0 >> 32 );
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177 | d2 += ( d1 >> 32 );
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178 | d3 += ( d2 >> 32 );
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179 | acc0 = (uint32_t) d0;
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180 | acc1 = (uint32_t) d1;
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181 | acc2 = (uint32_t) d2;
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182 | acc3 = (uint32_t) d3;
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183 | acc4 = (uint32_t) ( d3 >> 32 ) + acc4;
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184 |
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185 | d0 = (uint64_t) acc0 + ( acc4 >> 2 ) + ( acc4 & 0xFFFFFFFCU );
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186 | acc4 &= 3U;
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187 | acc0 = (uint32_t) d0;
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188 | d0 = (uint64_t) acc1 + ( d0 >> 32U );
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189 | acc1 = (uint32_t) d0;
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190 | d0 = (uint64_t) acc2 + ( d0 >> 32U );
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191 | acc2 = (uint32_t) d0;
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192 | d0 = (uint64_t) acc3 + ( d0 >> 32U );
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193 | acc3 = (uint32_t) d0;
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194 | d0 = (uint64_t) acc4 + ( d0 >> 32U );
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195 | acc4 = (uint32_t) d0;
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196 |
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197 | offset += POLY1305_BLOCK_SIZE_BYTES;
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198 | }
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199 |
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200 | ctx->acc[0] = acc0;
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201 | ctx->acc[1] = acc1;
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202 | ctx->acc[2] = acc2;
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203 | ctx->acc[3] = acc3;
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204 | ctx->acc[4] = acc4;
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205 | }
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206 |
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207 | /**
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208 | * \brief Compute the Poly1305 MAC
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209 | *
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210 | * \param ctx The Poly1305 context.
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211 | * \param mac The buffer to where the MAC is written. Must be
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212 | * big enough to contain the 16-byte MAC.
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213 | */
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214 | static void poly1305_compute_mac( const mbedtls_poly1305_context *ctx,
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215 | unsigned char mac[16] )
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216 | {
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217 | uint64_t d;
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218 | uint32_t g0, g1, g2, g3, g4;
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219 | uint32_t acc0, acc1, acc2, acc3, acc4;
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220 | uint32_t mask;
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221 | uint32_t mask_inv;
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222 |
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223 | acc0 = ctx->acc[0];
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224 | acc1 = ctx->acc[1];
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225 | acc2 = ctx->acc[2];
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226 | acc3 = ctx->acc[3];
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227 | acc4 = ctx->acc[4];
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228 |
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229 | /* Before adding 's' we ensure that the accumulator is mod 2^130 - 5.
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230 | * We do this by calculating acc - (2^130 - 5), then checking if
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231 | * the 131st bit is set. If it is, then reduce: acc -= (2^130 - 5)
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232 | */
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233 |
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234 | /* Calculate acc + -(2^130 - 5) */
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235 | d = ( (uint64_t) acc0 + 5U );
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236 | g0 = (uint32_t) d;
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237 | d = ( (uint64_t) acc1 + ( d >> 32 ) );
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238 | g1 = (uint32_t) d;
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239 | d = ( (uint64_t) acc2 + ( d >> 32 ) );
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240 | g2 = (uint32_t) d;
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241 | d = ( (uint64_t) acc3 + ( d >> 32 ) );
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242 | g3 = (uint32_t) d;
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243 | g4 = acc4 + (uint32_t) ( d >> 32U );
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244 |
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245 | /* mask == 0xFFFFFFFF if 131st bit is set, otherwise mask == 0 */
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246 | mask = (uint32_t) 0U - ( g4 >> 2U );
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247 | mask_inv = ~mask;
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248 |
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249 | /* If 131st bit is set then acc=g, otherwise, acc is unmodified */
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250 | acc0 = ( acc0 & mask_inv ) | ( g0 & mask );
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251 | acc1 = ( acc1 & mask_inv ) | ( g1 & mask );
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252 | acc2 = ( acc2 & mask_inv ) | ( g2 & mask );
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253 | acc3 = ( acc3 & mask_inv ) | ( g3 & mask );
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254 |
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255 | /* Add 's' */
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256 | d = (uint64_t) acc0 + ctx->s[0];
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257 | acc0 = (uint32_t) d;
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258 | d = (uint64_t) acc1 + ctx->s[1] + ( d >> 32U );
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259 | acc1 = (uint32_t) d;
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260 | d = (uint64_t) acc2 + ctx->s[2] + ( d >> 32U );
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261 | acc2 = (uint32_t) d;
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262 | acc3 += ctx->s[3] + (uint32_t) ( d >> 32U );
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263 |
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264 | /* Compute MAC (128 least significant bits of the accumulator) */
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265 | mac[ 0] = (unsigned char)( acc0 );
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266 | mac[ 1] = (unsigned char)( acc0 >> 8 );
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267 | mac[ 2] = (unsigned char)( acc0 >> 16 );
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268 | mac[ 3] = (unsigned char)( acc0 >> 24 );
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269 | mac[ 4] = (unsigned char)( acc1 );
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270 | mac[ 5] = (unsigned char)( acc1 >> 8 );
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271 | mac[ 6] = (unsigned char)( acc1 >> 16 );
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272 | mac[ 7] = (unsigned char)( acc1 >> 24 );
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273 | mac[ 8] = (unsigned char)( acc2 );
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274 | mac[ 9] = (unsigned char)( acc2 >> 8 );
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275 | mac[10] = (unsigned char)( acc2 >> 16 );
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276 | mac[11] = (unsigned char)( acc2 >> 24 );
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277 | mac[12] = (unsigned char)( acc3 );
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278 | mac[13] = (unsigned char)( acc3 >> 8 );
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279 | mac[14] = (unsigned char)( acc3 >> 16 );
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280 | mac[15] = (unsigned char)( acc3 >> 24 );
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281 | }
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282 |
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283 | void mbedtls_poly1305_init( mbedtls_poly1305_context *ctx )
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284 | {
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285 | POLY1305_VALIDATE( ctx != NULL );
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286 |
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287 | mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) );
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288 | }
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289 |
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290 | void mbedtls_poly1305_free( mbedtls_poly1305_context *ctx )
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291 | {
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292 | if( ctx == NULL )
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293 | return;
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294 |
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295 | mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) );
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296 | }
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297 |
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298 | int mbedtls_poly1305_starts( mbedtls_poly1305_context *ctx,
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299 | const unsigned char key[32] )
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300 | {
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301 | POLY1305_VALIDATE_RET( ctx != NULL );
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302 | POLY1305_VALIDATE_RET( key != NULL );
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303 |
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304 | /* r &= 0x0ffffffc0ffffffc0ffffffc0fffffff */
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305 | ctx->r[0] = BYTES_TO_U32_LE( key, 0 ) & 0x0FFFFFFFU;
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306 | ctx->r[1] = BYTES_TO_U32_LE( key, 4 ) & 0x0FFFFFFCU;
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307 | ctx->r[2] = BYTES_TO_U32_LE( key, 8 ) & 0x0FFFFFFCU;
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308 | ctx->r[3] = BYTES_TO_U32_LE( key, 12 ) & 0x0FFFFFFCU;
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309 |
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310 | ctx->s[0] = BYTES_TO_U32_LE( key, 16 );
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311 | ctx->s[1] = BYTES_TO_U32_LE( key, 20 );
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312 | ctx->s[2] = BYTES_TO_U32_LE( key, 24 );
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313 | ctx->s[3] = BYTES_TO_U32_LE( key, 28 );
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314 |
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315 | /* Initial accumulator state */
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316 | ctx->acc[0] = 0U;
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317 | ctx->acc[1] = 0U;
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318 | ctx->acc[2] = 0U;
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319 | ctx->acc[3] = 0U;
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320 | ctx->acc[4] = 0U;
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321 |
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322 | /* Queue initially empty */
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323 | mbedtls_platform_zeroize( ctx->queue, sizeof( ctx->queue ) );
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324 | ctx->queue_len = 0U;
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325 |
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326 | return( 0 );
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327 | }
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328 |
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329 | int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx,
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330 | const unsigned char *input,
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331 | size_t ilen )
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332 | {
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333 | size_t offset = 0U;
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334 | size_t remaining = ilen;
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335 | size_t queue_free_len;
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336 | size_t nblocks;
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337 | POLY1305_VALIDATE_RET( ctx != NULL );
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338 | POLY1305_VALIDATE_RET( ilen == 0 || input != NULL );
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339 |
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340 | if( ( remaining > 0U ) && ( ctx->queue_len > 0U ) )
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341 | {
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342 | queue_free_len = ( POLY1305_BLOCK_SIZE_BYTES - ctx->queue_len );
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343 |
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344 | if( ilen < queue_free_len )
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345 | {
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346 | /* Not enough data to complete the block.
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347 | * Store this data with the other leftovers.
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348 | */
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349 | memcpy( &ctx->queue[ctx->queue_len],
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350 | input,
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351 | ilen );
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352 |
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353 | ctx->queue_len += ilen;
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354 |
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355 | remaining = 0U;
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356 | }
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357 | else
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358 | {
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359 | /* Enough data to produce a complete block */
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360 | memcpy( &ctx->queue[ctx->queue_len],
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361 | input,
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362 | queue_free_len );
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363 |
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364 | ctx->queue_len = 0U;
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365 |
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366 | poly1305_process( ctx, 1U, ctx->queue, 1U ); /* add padding bit */
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367 |
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368 | offset += queue_free_len;
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369 | remaining -= queue_free_len;
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370 | }
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371 | }
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372 |
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373 | if( remaining >= POLY1305_BLOCK_SIZE_BYTES )
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374 | {
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375 | nblocks = remaining / POLY1305_BLOCK_SIZE_BYTES;
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376 |
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377 | poly1305_process( ctx, nblocks, &input[offset], 1U );
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378 |
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379 | offset += nblocks * POLY1305_BLOCK_SIZE_BYTES;
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380 | remaining %= POLY1305_BLOCK_SIZE_BYTES;
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381 | }
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382 |
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383 | if( remaining > 0U )
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384 | {
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385 | /* Store partial block */
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386 | ctx->queue_len = remaining;
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387 | memcpy( ctx->queue, &input[offset], remaining );
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388 | }
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389 |
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390 | return( 0 );
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391 | }
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392 |
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393 | int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx,
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394 | unsigned char mac[16] )
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395 | {
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396 | POLY1305_VALIDATE_RET( ctx != NULL );
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397 | POLY1305_VALIDATE_RET( mac != NULL );
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398 |
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399 | /* Process any leftover data */
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400 | if( ctx->queue_len > 0U )
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401 | {
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402 | /* Add padding bit */
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403 | ctx->queue[ctx->queue_len] = 1U;
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404 | ctx->queue_len++;
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405 |
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406 | /* Pad with zeroes */
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407 | memset( &ctx->queue[ctx->queue_len],
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408 | 0,
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409 | POLY1305_BLOCK_SIZE_BYTES - ctx->queue_len );
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410 |
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411 | poly1305_process( ctx, 1U, /* Process 1 block */
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412 | ctx->queue, 0U ); /* Already padded above */
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413 | }
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414 |
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415 | poly1305_compute_mac( ctx, mac );
|
---|
416 |
|
---|
417 | return( 0 );
|
---|
418 | }
|
---|
419 |
|
---|
420 | int mbedtls_poly1305_mac( const unsigned char key[32],
|
---|
421 | const unsigned char *input,
|
---|
422 | size_t ilen,
|
---|
423 | unsigned char mac[16] )
|
---|
424 | {
|
---|
425 | mbedtls_poly1305_context ctx;
|
---|
426 | int ret;
|
---|
427 | POLY1305_VALIDATE_RET( key != NULL );
|
---|
428 | POLY1305_VALIDATE_RET( mac != NULL );
|
---|
429 | POLY1305_VALIDATE_RET( ilen == 0 || input != NULL );
|
---|
430 |
|
---|
431 | mbedtls_poly1305_init( &ctx );
|
---|
432 |
|
---|
433 | ret = mbedtls_poly1305_starts( &ctx, key );
|
---|
434 | if( ret != 0 )
|
---|
435 | goto cleanup;
|
---|
436 |
|
---|
437 | ret = mbedtls_poly1305_update( &ctx, input, ilen );
|
---|
438 | if( ret != 0 )
|
---|
439 | goto cleanup;
|
---|
440 |
|
---|
441 | ret = mbedtls_poly1305_finish( &ctx, mac );
|
---|
442 |
|
---|
443 | cleanup:
|
---|
444 | mbedtls_poly1305_free( &ctx );
|
---|
445 | return( ret );
|
---|
446 | }
|
---|
447 |
|
---|
448 | #endif /* MBEDTLS_POLY1305_ALT */
|
---|
449 |
|
---|
450 | #if defined(MBEDTLS_SELF_TEST)
|
---|
451 |
|
---|
452 | static const unsigned char test_keys[2][32] =
|
---|
453 | {
|
---|
454 | {
|
---|
455 | 0x85, 0xd6, 0xbe, 0x78, 0x57, 0x55, 0x6d, 0x33,
|
---|
456 | 0x7f, 0x44, 0x52, 0xfe, 0x42, 0xd5, 0x06, 0xa8,
|
---|
457 | 0x01, 0x03, 0x80, 0x8a, 0xfb, 0x0d, 0xb2, 0xfd,
|
---|
458 | 0x4a, 0xbf, 0xf6, 0xaf, 0x41, 0x49, 0xf5, 0x1b
|
---|
459 | },
|
---|
460 | {
|
---|
461 | 0x1c, 0x92, 0x40, 0xa5, 0xeb, 0x55, 0xd3, 0x8a,
|
---|
462 | 0xf3, 0x33, 0x88, 0x86, 0x04, 0xf6, 0xb5, 0xf0,
|
---|
463 | 0x47, 0x39, 0x17, 0xc1, 0x40, 0x2b, 0x80, 0x09,
|
---|
464 | 0x9d, 0xca, 0x5c, 0xbc, 0x20, 0x70, 0x75, 0xc0
|
---|
465 | }
|
---|
466 | };
|
---|
467 |
|
---|
468 | static const unsigned char test_data[2][127] =
|
---|
469 | {
|
---|
470 | {
|
---|
471 | 0x43, 0x72, 0x79, 0x70, 0x74, 0x6f, 0x67, 0x72,
|
---|
472 | 0x61, 0x70, 0x68, 0x69, 0x63, 0x20, 0x46, 0x6f,
|
---|
473 | 0x72, 0x75, 0x6d, 0x20, 0x52, 0x65, 0x73, 0x65,
|
---|
474 | 0x61, 0x72, 0x63, 0x68, 0x20, 0x47, 0x72, 0x6f,
|
---|
475 | 0x75, 0x70
|
---|
476 | },
|
---|
477 | {
|
---|
478 | 0x27, 0x54, 0x77, 0x61, 0x73, 0x20, 0x62, 0x72,
|
---|
479 | 0x69, 0x6c, 0x6c, 0x69, 0x67, 0x2c, 0x20, 0x61,
|
---|
480 | 0x6e, 0x64, 0x20, 0x74, 0x68, 0x65, 0x20, 0x73,
|
---|
481 | 0x6c, 0x69, 0x74, 0x68, 0x79, 0x20, 0x74, 0x6f,
|
---|
482 | 0x76, 0x65, 0x73, 0x0a, 0x44, 0x69, 0x64, 0x20,
|
---|
483 | 0x67, 0x79, 0x72, 0x65, 0x20, 0x61, 0x6e, 0x64,
|
---|
484 | 0x20, 0x67, 0x69, 0x6d, 0x62, 0x6c, 0x65, 0x20,
|
---|
485 | 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20, 0x77,
|
---|
486 | 0x61, 0x62, 0x65, 0x3a, 0x0a, 0x41, 0x6c, 0x6c,
|
---|
487 | 0x20, 0x6d, 0x69, 0x6d, 0x73, 0x79, 0x20, 0x77,
|
---|
488 | 0x65, 0x72, 0x65, 0x20, 0x74, 0x68, 0x65, 0x20,
|
---|
489 | 0x62, 0x6f, 0x72, 0x6f, 0x67, 0x6f, 0x76, 0x65,
|
---|
490 | 0x73, 0x2c, 0x0a, 0x41, 0x6e, 0x64, 0x20, 0x74,
|
---|
491 | 0x68, 0x65, 0x20, 0x6d, 0x6f, 0x6d, 0x65, 0x20,
|
---|
492 | 0x72, 0x61, 0x74, 0x68, 0x73, 0x20, 0x6f, 0x75,
|
---|
493 | 0x74, 0x67, 0x72, 0x61, 0x62, 0x65, 0x2e
|
---|
494 | }
|
---|
495 | };
|
---|
496 |
|
---|
497 | static const size_t test_data_len[2] =
|
---|
498 | {
|
---|
499 | 34U,
|
---|
500 | 127U
|
---|
501 | };
|
---|
502 |
|
---|
503 | static const unsigned char test_mac[2][16] =
|
---|
504 | {
|
---|
505 | {
|
---|
506 | 0xa8, 0x06, 0x1d, 0xc1, 0x30, 0x51, 0x36, 0xc6,
|
---|
507 | 0xc2, 0x2b, 0x8b, 0xaf, 0x0c, 0x01, 0x27, 0xa9
|
---|
508 | },
|
---|
509 | {
|
---|
510 | 0x45, 0x41, 0x66, 0x9a, 0x7e, 0xaa, 0xee, 0x61,
|
---|
511 | 0xe7, 0x08, 0xdc, 0x7c, 0xbc, 0xc5, 0xeb, 0x62
|
---|
512 | }
|
---|
513 | };
|
---|
514 |
|
---|
515 | #define ASSERT( cond, args ) \
|
---|
516 | do \
|
---|
517 | { \
|
---|
518 | if( ! ( cond ) ) \
|
---|
519 | { \
|
---|
520 | if( verbose != 0 ) \
|
---|
521 | mbedtls_printf args; \
|
---|
522 | \
|
---|
523 | return( -1 ); \
|
---|
524 | } \
|
---|
525 | } \
|
---|
526 | while( 0 )
|
---|
527 |
|
---|
528 | int mbedtls_poly1305_self_test( int verbose )
|
---|
529 | {
|
---|
530 | unsigned char mac[16];
|
---|
531 | unsigned i;
|
---|
532 | int ret;
|
---|
533 |
|
---|
534 | for( i = 0U; i < 2U; i++ )
|
---|
535 | {
|
---|
536 | if( verbose != 0 )
|
---|
537 | mbedtls_printf( " Poly1305 test %u ", i );
|
---|
538 |
|
---|
539 | ret = mbedtls_poly1305_mac( test_keys[i],
|
---|
540 | test_data[i],
|
---|
541 | test_data_len[i],
|
---|
542 | mac );
|
---|
543 | ASSERT( 0 == ret, ( "error code: %i\n", ret ) );
|
---|
544 |
|
---|
545 | ASSERT( 0 == memcmp( mac, test_mac[i], 16U ), ( "failed (mac)\n" ) );
|
---|
546 |
|
---|
547 | if( verbose != 0 )
|
---|
548 | mbedtls_printf( "passed\n" );
|
---|
549 | }
|
---|
550 |
|
---|
551 | if( verbose != 0 )
|
---|
552 | mbedtls_printf( "\n" );
|
---|
553 |
|
---|
554 | return( 0 );
|
---|
555 | }
|
---|
556 |
|
---|
557 | #endif /* MBEDTLS_SELF_TEST */
|
---|
558 |
|
---|
559 | #endif /* MBEDTLS_POLY1305_C */
|
---|