1 | /*
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2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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3 | *
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4 | * Licensed under the OpenSSL license (the "License"). You may not use
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5 | * this file except in compliance with the License. You can obtain a copy
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6 | * in the file LICENSE in the source distribution or at
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7 | * https://www.openssl.org/source/license.html
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8 | */
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9 |
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10 | #include <stdio.h>
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11 | #include "internal/cryptlib.h"
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12 |
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13 | #include <openssl/evp.h>
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14 | #include <openssl/objects.h>
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15 | #include <openssl/sha.h>
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16 | #include <openssl/rsa.h>
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17 | #include "crypto/evp.h"
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18 | #include "crypto/sha.h"
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19 |
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20 | static int init(EVP_MD_CTX *ctx)
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21 | {
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22 | return SHA1_Init(EVP_MD_CTX_md_data(ctx));
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23 | }
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24 |
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25 | static int update(EVP_MD_CTX *ctx, const void *data, size_t count)
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26 | {
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27 | return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count);
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28 | }
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29 |
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30 | static int final(EVP_MD_CTX *ctx, unsigned char *md)
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31 | {
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32 | return SHA1_Final(md, EVP_MD_CTX_md_data(ctx));
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33 | }
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34 |
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35 | static int ctrl(EVP_MD_CTX *ctx, int cmd, int mslen, void *ms)
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36 | {
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37 | unsigned char padtmp[40];
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38 | unsigned char sha1tmp[SHA_DIGEST_LENGTH];
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39 |
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40 | SHA_CTX *sha1;
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41 |
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42 | if (cmd != EVP_CTRL_SSL3_MASTER_SECRET)
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43 | return -2;
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44 |
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45 | if (ctx == NULL)
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46 | return 0;
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47 |
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48 | sha1 = EVP_MD_CTX_md_data(ctx);
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49 |
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50 | /* SSLv3 client auth handling: see RFC-6101 5.6.8 */
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51 | if (mslen != 48)
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52 | return 0;
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53 |
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54 | /* At this point hash contains all handshake messages, update
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55 | * with master secret and pad_1.
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56 | */
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57 |
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58 | if (SHA1_Update(sha1, ms, mslen) <= 0)
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59 | return 0;
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60 |
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61 | /* Set padtmp to pad_1 value */
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62 | memset(padtmp, 0x36, sizeof(padtmp));
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63 |
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64 | if (!SHA1_Update(sha1, padtmp, sizeof(padtmp)))
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65 | return 0;
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66 |
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67 | if (!SHA1_Final(sha1tmp, sha1))
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68 | return 0;
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69 |
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70 | /* Reinitialise context */
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71 |
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72 | if (!SHA1_Init(sha1))
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73 | return 0;
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74 |
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75 | if (SHA1_Update(sha1, ms, mslen) <= 0)
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76 | return 0;
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77 |
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78 | /* Set padtmp to pad_2 value */
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79 | memset(padtmp, 0x5c, sizeof(padtmp));
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80 |
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81 | if (!SHA1_Update(sha1, padtmp, sizeof(padtmp)))
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82 | return 0;
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83 |
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84 | if (!SHA1_Update(sha1, sha1tmp, sizeof(sha1tmp)))
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85 | return 0;
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86 |
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87 | /* Now when ctx is finalised it will return the SSL v3 hash value */
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88 | OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp));
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89 |
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90 | return 1;
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91 |
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92 | }
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93 |
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94 | static const EVP_MD sha1_md = {
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95 | NID_sha1,
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96 | NID_sha1WithRSAEncryption,
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97 | SHA_DIGEST_LENGTH,
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98 | EVP_MD_FLAG_DIGALGID_ABSENT,
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99 | init,
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100 | update,
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101 | final,
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102 | NULL,
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103 | NULL,
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104 | SHA_CBLOCK,
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105 | sizeof(EVP_MD *) + sizeof(SHA_CTX),
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106 | ctrl
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107 | };
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108 |
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109 | const EVP_MD *EVP_sha1(void)
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110 | {
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111 | return &sha1_md;
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112 | }
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113 |
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114 | static int init224(EVP_MD_CTX *ctx)
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115 | {
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116 | return SHA224_Init(EVP_MD_CTX_md_data(ctx));
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117 | }
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118 |
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119 | static int update224(EVP_MD_CTX *ctx, const void *data, size_t count)
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120 | {
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121 | return SHA224_Update(EVP_MD_CTX_md_data(ctx), data, count);
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122 | }
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123 |
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124 | static int final224(EVP_MD_CTX *ctx, unsigned char *md)
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125 | {
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126 | return SHA224_Final(md, EVP_MD_CTX_md_data(ctx));
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127 | }
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128 |
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129 | static int init256(EVP_MD_CTX *ctx)
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130 | {
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131 | return SHA256_Init(EVP_MD_CTX_md_data(ctx));
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132 | }
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133 |
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134 | static int update256(EVP_MD_CTX *ctx, const void *data, size_t count)
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135 | {
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136 | return SHA256_Update(EVP_MD_CTX_md_data(ctx), data, count);
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137 | }
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138 |
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139 | static int final256(EVP_MD_CTX *ctx, unsigned char *md)
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140 | {
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141 | return SHA256_Final(md, EVP_MD_CTX_md_data(ctx));
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142 | }
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143 |
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144 | static const EVP_MD sha224_md = {
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145 | NID_sha224,
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146 | NID_sha224WithRSAEncryption,
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147 | SHA224_DIGEST_LENGTH,
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148 | EVP_MD_FLAG_DIGALGID_ABSENT,
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149 | init224,
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150 | update224,
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151 | final224,
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152 | NULL,
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153 | NULL,
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154 | SHA256_CBLOCK,
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155 | sizeof(EVP_MD *) + sizeof(SHA256_CTX),
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156 | };
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157 |
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158 | const EVP_MD *EVP_sha224(void)
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159 | {
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160 | return &sha224_md;
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161 | }
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162 |
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163 | static const EVP_MD sha256_md = {
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164 | NID_sha256,
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165 | NID_sha256WithRSAEncryption,
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166 | SHA256_DIGEST_LENGTH,
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167 | EVP_MD_FLAG_DIGALGID_ABSENT,
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168 | init256,
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169 | update256,
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170 | final256,
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171 | NULL,
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172 | NULL,
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173 | SHA256_CBLOCK,
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174 | sizeof(EVP_MD *) + sizeof(SHA256_CTX),
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175 | };
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176 |
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177 | const EVP_MD *EVP_sha256(void)
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178 | {
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179 | return &sha256_md;
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180 | }
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181 |
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182 | static int init512_224(EVP_MD_CTX *ctx)
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183 | {
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184 | return sha512_224_init(EVP_MD_CTX_md_data(ctx));
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185 | }
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186 |
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187 | static int init512_256(EVP_MD_CTX *ctx)
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188 | {
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189 | return sha512_256_init(EVP_MD_CTX_md_data(ctx));
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190 | }
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191 |
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192 | static int init384(EVP_MD_CTX *ctx)
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193 | {
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194 | return SHA384_Init(EVP_MD_CTX_md_data(ctx));
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195 | }
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196 |
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197 | static int update384(EVP_MD_CTX *ctx, const void *data, size_t count)
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198 | {
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199 | return SHA384_Update(EVP_MD_CTX_md_data(ctx), data, count);
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200 | }
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201 |
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202 | static int final384(EVP_MD_CTX *ctx, unsigned char *md)
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203 | {
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204 | return SHA384_Final(md, EVP_MD_CTX_md_data(ctx));
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205 | }
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206 |
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207 | static int init512(EVP_MD_CTX *ctx)
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208 | {
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209 | return SHA512_Init(EVP_MD_CTX_md_data(ctx));
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210 | }
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211 |
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212 | /* See comment in SHA224/256 section */
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213 | static int update512(EVP_MD_CTX *ctx, const void *data, size_t count)
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214 | {
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215 | return SHA512_Update(EVP_MD_CTX_md_data(ctx), data, count);
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216 | }
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217 |
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218 | static int final512(EVP_MD_CTX *ctx, unsigned char *md)
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219 | {
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220 | return SHA512_Final(md, EVP_MD_CTX_md_data(ctx));
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221 | }
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222 |
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223 | static const EVP_MD sha512_224_md = {
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224 | NID_sha512_224,
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225 | NID_sha512_224WithRSAEncryption,
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226 | SHA224_DIGEST_LENGTH,
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227 | EVP_MD_FLAG_DIGALGID_ABSENT,
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228 | init512_224,
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229 | update512,
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230 | final512,
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231 | NULL,
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232 | NULL,
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233 | SHA512_CBLOCK,
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234 | sizeof(EVP_MD *) + sizeof(SHA512_CTX),
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235 | };
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236 |
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237 | const EVP_MD *EVP_sha512_224(void)
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238 | {
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239 | return &sha512_224_md;
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240 | }
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241 |
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242 | static const EVP_MD sha512_256_md = {
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243 | NID_sha512_256,
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244 | NID_sha512_256WithRSAEncryption,
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245 | SHA256_DIGEST_LENGTH,
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246 | EVP_MD_FLAG_DIGALGID_ABSENT,
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247 | init512_256,
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248 | update512,
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249 | final512,
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250 | NULL,
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251 | NULL,
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252 | SHA512_CBLOCK,
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253 | sizeof(EVP_MD *) + sizeof(SHA512_CTX),
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254 | };
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255 |
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256 | const EVP_MD *EVP_sha512_256(void)
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257 | {
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258 | return &sha512_256_md;
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259 | }
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260 |
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261 | static const EVP_MD sha384_md = {
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262 | NID_sha384,
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263 | NID_sha384WithRSAEncryption,
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264 | SHA384_DIGEST_LENGTH,
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265 | EVP_MD_FLAG_DIGALGID_ABSENT,
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266 | init384,
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267 | update384,
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268 | final384,
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269 | NULL,
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270 | NULL,
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271 | SHA512_CBLOCK,
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272 | sizeof(EVP_MD *) + sizeof(SHA512_CTX),
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273 | };
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274 |
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275 | const EVP_MD *EVP_sha384(void)
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276 | {
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277 | return &sha384_md;
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278 | }
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279 |
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280 | static const EVP_MD sha512_md = {
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281 | NID_sha512,
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282 | NID_sha512WithRSAEncryption,
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283 | SHA512_DIGEST_LENGTH,
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284 | EVP_MD_FLAG_DIGALGID_ABSENT,
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285 | init512,
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286 | update512,
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287 | final512,
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288 | NULL,
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289 | NULL,
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290 | SHA512_CBLOCK,
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291 | sizeof(EVP_MD *) + sizeof(SHA512_CTX),
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292 | };
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293 |
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294 | const EVP_MD *EVP_sha512(void)
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295 | {
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296 | return &sha512_md;
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297 | }
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