1 | /* hmac.h
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2 | *
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3 | * Copyright (C) 2006-2015 wolfSSL Inc.
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4 | *
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5 | * This file is part of wolfSSL. (formerly known as CyaSSL)
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6 | *
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7 | * wolfSSL is free software; you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation; either version 2 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * wolfSSL is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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20 | */
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21 |
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22 | #ifdef HAVE_CONFIG_H
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23 | #include <config.h>
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24 | #endif
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25 |
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26 | #include <wolfssl/wolfcrypt/settings.h>
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27 |
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28 | #ifndef NO_HMAC
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29 |
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30 | #include <wolfssl/wolfcrypt/hmac.h>
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31 |
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32 | #ifdef HAVE_FIPS
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33 | /* does init */
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34 | int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 keySz)
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35 | {
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36 | return HmacSetKey_fips(hmac, type, key, keySz);
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37 | }
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38 |
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39 |
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40 | int wc_HmacUpdate(Hmac* hmac, const byte* in, word32 sz)
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41 | {
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42 | return HmacUpdate_fips(hmac, in, sz);
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43 | }
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44 |
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45 |
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46 | int wc_HmacFinal(Hmac* hmac, byte* out)
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47 | {
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48 | return HmacFinal_fips(hmac, out);
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49 | }
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50 |
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51 |
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52 | #ifdef HAVE_CAVIUM
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53 | int wc_HmacInitCavium(Hmac* hmac, int i)
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54 | {
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55 | return HmacInitCavium(hmac, i);
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56 | }
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57 |
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58 |
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59 | void wc_HmacFreeCavium(Hmac* hmac)
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60 | {
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61 | HmacFreeCavium(hmac);
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62 | }
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63 | #endif
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64 |
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65 | int wolfSSL_GetHmacMaxSize(void)
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66 | {
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67 | return CyaSSL_GetHmacMaxSize();
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68 | }
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69 |
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70 | #ifdef HAVE_HKDF
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71 |
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72 | int wc_HKDF(int type, const byte* inKey, word32 inKeySz,
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73 | const byte* salt, word32 saltSz,
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74 | const byte* info, word32 infoSz,
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75 | byte* out, word32 outSz)
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76 | {
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77 | return HKDF(type, inKey, inKeySz, salt, saltSz, info, infoSz, out, outSz);
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78 | }
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79 |
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80 |
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81 | #endif /* HAVE_HKDF */
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82 | #else /* else build without fips */
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83 | #ifdef WOLFSSL_PIC32MZ_HASH
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84 |
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85 | #define wc_InitMd5 wc_InitMd5_sw
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86 | #define wc_Md5Update wc_Md5Update_sw
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87 | #define wc_Md5Final wc_Md5Final_sw
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88 |
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89 | #define wc_InitSha wc_InitSha_sw
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90 | #define wc_ShaUpdate wc_ShaUpdate_sw
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91 | #define wc_ShaFinal wc_ShaFinal_sw
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92 |
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93 | #define wc_InitSha256 wc_InitSha256_sw
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94 | #define wc_Sha256Update wc_Sha256Update_sw
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95 | #define wc_Sha256Final wc_Sha256Final_sw
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96 |
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97 | #endif
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98 |
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99 | #ifdef HAVE_FIPS
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100 | /* set NO_WRAPPERS before headers, use direct internal f()s not wrappers */
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101 | #define FIPS_NO_WRAPPERS
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102 | #endif
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103 |
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104 | #include <wolfssl/wolfcrypt/error-crypt.h>
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105 |
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106 |
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107 | #ifdef HAVE_CAVIUM
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108 | static void HmacCaviumFinal(Hmac* hmac, byte* hash);
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109 | static void HmacCaviumUpdate(Hmac* hmac, const byte* msg, word32 length);
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110 | static void HmacCaviumSetKey(Hmac* hmac, int type, const byte* key,
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111 | word32 length);
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112 | #endif
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113 |
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114 | static int InitHmac(Hmac* hmac, int type)
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115 | {
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116 | int ret = 0;
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117 |
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118 | hmac->innerHashKeyed = 0;
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119 | hmac->macType = (byte)type;
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120 |
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121 | if (!(type == MD5 || type == SHA || type == SHA256 || type == SHA384
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122 | || type == SHA512 || type == BLAKE2B_ID))
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123 | return BAD_FUNC_ARG;
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124 |
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125 | switch (type) {
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126 | #ifndef NO_MD5
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127 | case MD5:
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128 | wc_InitMd5(&hmac->hash.md5);
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129 | break;
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130 | #endif
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131 |
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132 | #ifndef NO_SHA
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133 | case SHA:
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134 | ret = wc_InitSha(&hmac->hash.sha);
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135 | break;
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136 | #endif
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137 |
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138 | #ifndef NO_SHA256
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139 | case SHA256:
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140 | ret = wc_InitSha256(&hmac->hash.sha256);
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141 | break;
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142 | #endif
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143 |
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144 | #ifdef WOLFSSL_SHA384
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145 | case SHA384:
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146 | ret = wc_InitSha384(&hmac->hash.sha384);
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147 | break;
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148 | #endif
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149 |
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150 | #ifdef WOLFSSL_SHA512
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151 | case SHA512:
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152 | ret = wc_InitSha512(&hmac->hash.sha512);
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153 | break;
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154 | #endif
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155 |
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156 | #ifdef HAVE_BLAKE2
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157 | case BLAKE2B_ID:
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158 | ret = wc_InitBlake2b(&hmac->hash.blake2b, BLAKE2B_256);
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159 | break;
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160 | #endif
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161 |
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162 | default:
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163 | return BAD_FUNC_ARG;
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164 | }
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165 |
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166 | return ret;
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167 | }
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168 |
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169 |
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170 | int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
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171 | {
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172 | byte* ip = (byte*) hmac->ipad;
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173 | byte* op = (byte*) hmac->opad;
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174 | word32 i, hmac_block_size = 0;
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175 | int ret;
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176 |
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177 | #ifdef HAVE_CAVIUM
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178 | if (hmac->magic == WOLFSSL_HMAC_CAVIUM_MAGIC)
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179 | return HmacCaviumSetKey(hmac, type, key, length);
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180 | #endif
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181 |
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182 | ret = InitHmac(hmac, type);
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183 | if (ret != 0)
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184 | return ret;
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185 |
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186 | #ifdef HAVE_FIPS
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187 | if (length < HMAC_FIPS_MIN_KEY)
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188 | return HMAC_MIN_KEYLEN_E;
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189 | #endif
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190 |
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191 | switch (hmac->macType) {
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192 | #ifndef NO_MD5
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193 | case MD5:
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194 | {
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195 | hmac_block_size = MD5_BLOCK_SIZE;
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196 | if (length <= MD5_BLOCK_SIZE) {
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197 | XMEMCPY(ip, key, length);
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198 | }
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199 | else {
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200 | wc_Md5Update(&hmac->hash.md5, key, length);
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201 | wc_Md5Final(&hmac->hash.md5, ip);
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202 | length = MD5_DIGEST_SIZE;
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203 | }
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204 | }
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205 | break;
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206 | #endif
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207 |
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208 | #ifndef NO_SHA
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209 | case SHA:
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210 | {
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211 | hmac_block_size = SHA_BLOCK_SIZE;
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212 | if (length <= SHA_BLOCK_SIZE) {
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213 | XMEMCPY(ip, key, length);
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214 | }
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215 | else {
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216 | wc_ShaUpdate(&hmac->hash.sha, key, length);
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217 | wc_ShaFinal(&hmac->hash.sha, ip);
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218 | length = SHA_DIGEST_SIZE;
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219 | }
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220 | }
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221 | break;
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222 | #endif
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223 |
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224 | #ifndef NO_SHA256
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225 | case SHA256:
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226 | {
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227 | hmac_block_size = SHA256_BLOCK_SIZE;
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228 | if (length <= SHA256_BLOCK_SIZE) {
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229 | XMEMCPY(ip, key, length);
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230 | }
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231 | else {
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232 | ret = wc_Sha256Update(&hmac->hash.sha256, key, length);
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233 | if (ret != 0)
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234 | return ret;
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235 |
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236 | ret = wc_Sha256Final(&hmac->hash.sha256, ip);
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237 | if (ret != 0)
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238 | return ret;
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239 |
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240 | length = SHA256_DIGEST_SIZE;
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241 | }
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242 | }
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243 | break;
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244 | #endif
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245 |
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246 | #ifdef WOLFSSL_SHA384
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247 | case SHA384:
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248 | {
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249 | hmac_block_size = SHA384_BLOCK_SIZE;
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250 | if (length <= SHA384_BLOCK_SIZE) {
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251 | XMEMCPY(ip, key, length);
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252 | }
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253 | else {
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254 | ret = wc_Sha384Update(&hmac->hash.sha384, key, length);
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255 | if (ret != 0)
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256 | return ret;
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257 |
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258 | ret = wc_Sha384Final(&hmac->hash.sha384, ip);
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259 | if (ret != 0)
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260 | return ret;
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261 |
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262 | length = SHA384_DIGEST_SIZE;
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263 | }
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264 | }
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265 | break;
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266 | #endif
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267 |
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268 | #ifdef WOLFSSL_SHA512
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269 | case SHA512:
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270 | {
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271 | hmac_block_size = SHA512_BLOCK_SIZE;
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272 | if (length <= SHA512_BLOCK_SIZE) {
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273 | XMEMCPY(ip, key, length);
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274 | }
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275 | else {
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276 | ret = wc_Sha512Update(&hmac->hash.sha512, key, length);
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277 | if (ret != 0)
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278 | return ret;
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279 |
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280 | ret = wc_Sha512Final(&hmac->hash.sha512, ip);
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281 | if (ret != 0)
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282 | return ret;
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283 |
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284 | length = SHA512_DIGEST_SIZE;
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285 | }
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286 | }
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287 | break;
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288 | #endif
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289 |
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290 | #ifdef HAVE_BLAKE2
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291 | case BLAKE2B_ID:
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292 | {
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293 | hmac_block_size = BLAKE2B_BLOCKBYTES;
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294 | if (length <= BLAKE2B_BLOCKBYTES) {
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295 | XMEMCPY(ip, key, length);
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296 | }
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297 | else {
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298 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b, key, length);
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299 | if (ret != 0)
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300 | return ret;
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301 |
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302 | ret = wc_Blake2bFinal(&hmac->hash.blake2b, ip, BLAKE2B_256);
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303 | if (ret != 0)
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304 | return ret;
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305 |
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306 | length = BLAKE2B_256;
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307 | }
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308 | }
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309 | break;
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310 | #endif
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311 |
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312 | default:
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313 | return BAD_FUNC_ARG;
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314 | }
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315 | if (length < hmac_block_size)
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316 | XMEMSET(ip + length, 0, hmac_block_size - length);
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317 |
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318 | for(i = 0; i < hmac_block_size; i++) {
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319 | op[i] = ip[i] ^ OPAD;
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320 | ip[i] ^= IPAD;
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321 | }
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322 | return 0;
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323 | }
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324 |
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325 |
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326 | static int HmacKeyInnerHash(Hmac* hmac)
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327 | {
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328 | int ret = 0;
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329 |
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330 | switch (hmac->macType) {
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331 | #ifndef NO_MD5
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332 | case MD5:
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333 | wc_Md5Update(&hmac->hash.md5, (byte*) hmac->ipad, MD5_BLOCK_SIZE);
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334 | break;
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335 | #endif
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336 |
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337 | #ifndef NO_SHA
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338 | case SHA:
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339 | wc_ShaUpdate(&hmac->hash.sha, (byte*) hmac->ipad, SHA_BLOCK_SIZE);
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340 | break;
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341 | #endif
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342 |
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343 | #ifndef NO_SHA256
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344 | case SHA256:
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345 | ret = wc_Sha256Update(&hmac->hash.sha256,
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346 | (byte*) hmac->ipad, SHA256_BLOCK_SIZE);
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347 | if (ret != 0)
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348 | return ret;
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349 | break;
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350 | #endif
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351 |
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352 | #ifdef WOLFSSL_SHA384
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353 | case SHA384:
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354 | ret = wc_Sha384Update(&hmac->hash.sha384,
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355 | (byte*) hmac->ipad, SHA384_BLOCK_SIZE);
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356 | if (ret != 0)
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357 | return ret;
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358 | break;
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359 | #endif
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360 |
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361 | #ifdef WOLFSSL_SHA512
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362 | case SHA512:
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363 | ret = wc_Sha512Update(&hmac->hash.sha512,
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364 | (byte*) hmac->ipad, SHA512_BLOCK_SIZE);
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365 | if (ret != 0)
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366 | return ret;
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367 | break;
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368 | #endif
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369 |
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370 | #ifdef HAVE_BLAKE2
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371 | case BLAKE2B_ID:
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372 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b,
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373 | (byte*) hmac->ipad,BLAKE2B_BLOCKBYTES);
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374 | if (ret != 0)
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375 | return ret;
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376 | break;
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377 | #endif
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378 |
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379 | default:
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380 | break;
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381 | }
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382 |
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383 | hmac->innerHashKeyed = 1;
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384 |
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385 | return ret;
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386 | }
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387 |
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388 |
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389 | int wc_HmacUpdate(Hmac* hmac, const byte* msg, word32 length)
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390 | {
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391 | int ret;
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392 |
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393 | #ifdef HAVE_CAVIUM
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394 | if (hmac->magic == WOLFSSL_HMAC_CAVIUM_MAGIC)
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395 | return HmacCaviumUpdate(hmac, msg, length);
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396 | #endif
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397 |
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398 | if (!hmac->innerHashKeyed) {
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399 | ret = HmacKeyInnerHash(hmac);
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400 | if (ret != 0)
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401 | return ret;
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402 | }
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403 |
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404 | switch (hmac->macType) {
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405 | #ifndef NO_MD5
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406 | case MD5:
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407 | wc_Md5Update(&hmac->hash.md5, msg, length);
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408 | break;
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409 | #endif
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410 |
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411 | #ifndef NO_SHA
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412 | case SHA:
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413 | wc_ShaUpdate(&hmac->hash.sha, msg, length);
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414 | break;
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415 | #endif
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416 |
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417 | #ifndef NO_SHA256
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418 | case SHA256:
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419 | ret = wc_Sha256Update(&hmac->hash.sha256, msg, length);
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420 | if (ret != 0)
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421 | return ret;
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422 | break;
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423 | #endif
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424 |
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425 | #ifdef WOLFSSL_SHA384
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426 | case SHA384:
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427 | ret = wc_Sha384Update(&hmac->hash.sha384, msg, length);
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428 | if (ret != 0)
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429 | return ret;
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430 | break;
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431 | #endif
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432 |
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433 | #ifdef WOLFSSL_SHA512
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434 | case SHA512:
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435 | ret = wc_Sha512Update(&hmac->hash.sha512, msg, length);
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436 | if (ret != 0)
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437 | return ret;
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438 | break;
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439 | #endif
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440 |
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441 | #ifdef HAVE_BLAKE2
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442 | case BLAKE2B_ID:
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443 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b, msg, length);
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444 | if (ret != 0)
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445 | return ret;
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446 | break;
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447 | #endif
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448 |
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449 | default:
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450 | break;
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451 | }
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452 |
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453 | return 0;
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454 | }
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455 |
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456 |
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457 | int wc_HmacFinal(Hmac* hmac, byte* hash)
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458 | {
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459 | int ret;
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460 |
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461 | #ifdef HAVE_CAVIUM
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462 | if (hmac->magic == WOLFSSL_HMAC_CAVIUM_MAGIC)
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463 | return HmacCaviumFinal(hmac, hash);
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464 | #endif
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465 |
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466 | if (!hmac->innerHashKeyed) {
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467 | ret = HmacKeyInnerHash(hmac);
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468 | if (ret != 0)
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469 | return ret;
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470 | }
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471 |
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472 | switch (hmac->macType) {
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473 | #ifndef NO_MD5
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474 | case MD5:
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475 | {
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476 | wc_Md5Final(&hmac->hash.md5, (byte*) hmac->innerHash);
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477 |
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478 | wc_Md5Update(&hmac->hash.md5, (byte*) hmac->opad, MD5_BLOCK_SIZE);
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479 | wc_Md5Update(&hmac->hash.md5,
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480 | (byte*) hmac->innerHash, MD5_DIGEST_SIZE);
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481 |
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482 | wc_Md5Final(&hmac->hash.md5, hash);
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483 | }
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484 | break;
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485 | #endif
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486 |
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487 | #ifndef NO_SHA
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488 | case SHA:
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489 | {
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490 | wc_ShaFinal(&hmac->hash.sha, (byte*) hmac->innerHash);
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491 |
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492 | wc_ShaUpdate(&hmac->hash.sha, (byte*) hmac->opad, SHA_BLOCK_SIZE);
|
---|
493 | wc_ShaUpdate(&hmac->hash.sha,
|
---|
494 | (byte*) hmac->innerHash, SHA_DIGEST_SIZE);
|
---|
495 |
|
---|
496 | wc_ShaFinal(&hmac->hash.sha, hash);
|
---|
497 | }
|
---|
498 | break;
|
---|
499 | #endif
|
---|
500 |
|
---|
501 | #ifndef NO_SHA256
|
---|
502 | case SHA256:
|
---|
503 | {
|
---|
504 | ret = wc_Sha256Final(&hmac->hash.sha256, (byte*) hmac->innerHash);
|
---|
505 | if (ret != 0)
|
---|
506 | return ret;
|
---|
507 |
|
---|
508 | ret = wc_Sha256Update(&hmac->hash.sha256,
|
---|
509 | (byte*) hmac->opad, SHA256_BLOCK_SIZE);
|
---|
510 | if (ret != 0)
|
---|
511 | return ret;
|
---|
512 |
|
---|
513 | ret = wc_Sha256Update(&hmac->hash.sha256,
|
---|
514 | (byte*) hmac->innerHash, SHA256_DIGEST_SIZE);
|
---|
515 | if (ret != 0)
|
---|
516 | return ret;
|
---|
517 |
|
---|
518 | ret = wc_Sha256Final(&hmac->hash.sha256, hash);
|
---|
519 | if (ret != 0)
|
---|
520 | return ret;
|
---|
521 | }
|
---|
522 | break;
|
---|
523 | #endif
|
---|
524 |
|
---|
525 | #ifdef WOLFSSL_SHA384
|
---|
526 | case SHA384:
|
---|
527 | {
|
---|
528 | ret = wc_Sha384Final(&hmac->hash.sha384, (byte*) hmac->innerHash);
|
---|
529 | if (ret != 0)
|
---|
530 | return ret;
|
---|
531 |
|
---|
532 | ret = wc_Sha384Update(&hmac->hash.sha384,
|
---|
533 | (byte*) hmac->opad, SHA384_BLOCK_SIZE);
|
---|
534 | if (ret != 0)
|
---|
535 | return ret;
|
---|
536 |
|
---|
537 | ret = wc_Sha384Update(&hmac->hash.sha384,
|
---|
538 | (byte*) hmac->innerHash, SHA384_DIGEST_SIZE);
|
---|
539 | if (ret != 0)
|
---|
540 | return ret;
|
---|
541 |
|
---|
542 | ret = wc_Sha384Final(&hmac->hash.sha384, hash);
|
---|
543 | if (ret != 0)
|
---|
544 | return ret;
|
---|
545 | }
|
---|
546 | break;
|
---|
547 | #endif
|
---|
548 |
|
---|
549 | #ifdef WOLFSSL_SHA512
|
---|
550 | case SHA512:
|
---|
551 | {
|
---|
552 | ret = wc_Sha512Final(&hmac->hash.sha512, (byte*) hmac->innerHash);
|
---|
553 | if (ret != 0)
|
---|
554 | return ret;
|
---|
555 |
|
---|
556 | ret = wc_Sha512Update(&hmac->hash.sha512,
|
---|
557 | (byte*) hmac->opad, SHA512_BLOCK_SIZE);
|
---|
558 | if (ret != 0)
|
---|
559 | return ret;
|
---|
560 |
|
---|
561 | ret = wc_Sha512Update(&hmac->hash.sha512,
|
---|
562 | (byte*) hmac->innerHash, SHA512_DIGEST_SIZE);
|
---|
563 | if (ret != 0)
|
---|
564 | return ret;
|
---|
565 |
|
---|
566 | ret = wc_Sha512Final(&hmac->hash.sha512, hash);
|
---|
567 | if (ret != 0)
|
---|
568 | return ret;
|
---|
569 | }
|
---|
570 | break;
|
---|
571 | #endif
|
---|
572 |
|
---|
573 | #ifdef HAVE_BLAKE2
|
---|
574 | case BLAKE2B_ID:
|
---|
575 | {
|
---|
576 | ret = wc_Blake2bFinal(&hmac->hash.blake2b, (byte*) hmac->innerHash,
|
---|
577 | BLAKE2B_256);
|
---|
578 | if (ret != 0)
|
---|
579 | return ret;
|
---|
580 |
|
---|
581 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b,
|
---|
582 | (byte*) hmac->opad, BLAKE2B_BLOCKBYTES);
|
---|
583 | if (ret != 0)
|
---|
584 | return ret;
|
---|
585 |
|
---|
586 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b,
|
---|
587 | (byte*) hmac->innerHash, BLAKE2B_256);
|
---|
588 | if (ret != 0)
|
---|
589 | return ret;
|
---|
590 |
|
---|
591 | ret = wc_Blake2bFinal(&hmac->hash.blake2b, hash, BLAKE2B_256);
|
---|
592 | if (ret != 0)
|
---|
593 | return ret;
|
---|
594 | }
|
---|
595 | break;
|
---|
596 | #endif
|
---|
597 |
|
---|
598 | default:
|
---|
599 | break;
|
---|
600 | }
|
---|
601 |
|
---|
602 | hmac->innerHashKeyed = 0;
|
---|
603 |
|
---|
604 | return 0;
|
---|
605 | }
|
---|
606 |
|
---|
607 |
|
---|
608 | #ifdef HAVE_CAVIUM
|
---|
609 |
|
---|
610 | /* Initiliaze Hmac for use with Nitrox device */
|
---|
611 | int wc_HmacInitCavium(Hmac* hmac, int devId)
|
---|
612 | {
|
---|
613 | if (hmac == NULL)
|
---|
614 | return -1;
|
---|
615 |
|
---|
616 | if (CspAllocContext(CONTEXT_SSL, &hmac->contextHandle, devId) != 0)
|
---|
617 | return -1;
|
---|
618 |
|
---|
619 | hmac->keyLen = 0;
|
---|
620 | hmac->dataLen = 0;
|
---|
621 | hmac->type = 0;
|
---|
622 | hmac->devId = devId;
|
---|
623 | hmac->magic = WOLFSSL_HMAC_CAVIUM_MAGIC;
|
---|
624 | hmac->data = NULL; /* buffered input data */
|
---|
625 |
|
---|
626 | hmac->innerHashKeyed = 0;
|
---|
627 |
|
---|
628 | return 0;
|
---|
629 | }
|
---|
630 |
|
---|
631 |
|
---|
632 | /* Free Hmac from use with Nitrox device */
|
---|
633 | void wc_HmacFreeCavium(Hmac* hmac)
|
---|
634 | {
|
---|
635 | if (hmac == NULL)
|
---|
636 | return;
|
---|
637 |
|
---|
638 | CspFreeContext(CONTEXT_SSL, hmac->contextHandle, hmac->devId);
|
---|
639 | hmac->magic = 0;
|
---|
640 | XFREE(hmac->data, NULL, DYNAMIC_TYPE_CAVIUM_TMP);
|
---|
641 | hmac->data = NULL;
|
---|
642 | }
|
---|
643 |
|
---|
644 |
|
---|
645 | static void HmacCaviumFinal(Hmac* hmac, byte* hash)
|
---|
646 | {
|
---|
647 | word32 requestId;
|
---|
648 |
|
---|
649 | if (CspHmac(CAVIUM_BLOCKING, hmac->type, NULL, hmac->keyLen,
|
---|
650 | (byte*)hmac->ipad, hmac->dataLen, hmac->data, hash, &requestId,
|
---|
651 | hmac->devId) != 0) {
|
---|
652 | WOLFSSL_MSG("Cavium Hmac failed");
|
---|
653 | }
|
---|
654 | hmac->innerHashKeyed = 0; /* tell update to start over if used again */
|
---|
655 | }
|
---|
656 |
|
---|
657 |
|
---|
658 | static void HmacCaviumUpdate(Hmac* hmac, const byte* msg, word32 length)
|
---|
659 | {
|
---|
660 | word16 add = (word16)length;
|
---|
661 | word32 total;
|
---|
662 | byte* tmp;
|
---|
663 |
|
---|
664 | if (length > WOLFSSL_MAX_16BIT) {
|
---|
665 | WOLFSSL_MSG("Too big msg for cavium hmac");
|
---|
666 | return;
|
---|
667 | }
|
---|
668 |
|
---|
669 | if (hmac->innerHashKeyed == 0) { /* starting new */
|
---|
670 | hmac->dataLen = 0;
|
---|
671 | hmac->innerHashKeyed = 1;
|
---|
672 | }
|
---|
673 |
|
---|
674 | total = add + hmac->dataLen;
|
---|
675 | if (total > WOLFSSL_MAX_16BIT) {
|
---|
676 | WOLFSSL_MSG("Too big msg for cavium hmac");
|
---|
677 | return;
|
---|
678 | }
|
---|
679 |
|
---|
680 | tmp = XMALLOC(hmac->dataLen + add, NULL,DYNAMIC_TYPE_CAVIUM_TMP);
|
---|
681 | if (tmp == NULL) {
|
---|
682 | WOLFSSL_MSG("Out of memory for cavium update");
|
---|
683 | return;
|
---|
684 | }
|
---|
685 | if (hmac->dataLen)
|
---|
686 | XMEMCPY(tmp, hmac->data, hmac->dataLen);
|
---|
687 | XMEMCPY(tmp + hmac->dataLen, msg, add);
|
---|
688 |
|
---|
689 | hmac->dataLen += add;
|
---|
690 | XFREE(hmac->data, NULL, DYNAMIC_TYPE_CAVIUM_TMP);
|
---|
691 | hmac->data = tmp;
|
---|
692 | }
|
---|
693 |
|
---|
694 |
|
---|
695 | static void HmacCaviumSetKey(Hmac* hmac, int type, const byte* key,
|
---|
696 | word32 length)
|
---|
697 | {
|
---|
698 | hmac->macType = (byte)type;
|
---|
699 | if (type == MD5)
|
---|
700 | hmac->type = MD5_TYPE;
|
---|
701 | else if (type == SHA)
|
---|
702 | hmac->type = SHA1_TYPE;
|
---|
703 | else if (type == SHA256)
|
---|
704 | hmac->type = SHA256_TYPE;
|
---|
705 | else {
|
---|
706 | WOLFSSL_MSG("unsupported cavium hmac type");
|
---|
707 | }
|
---|
708 |
|
---|
709 | hmac->innerHashKeyed = 0; /* should we key Startup flag */
|
---|
710 |
|
---|
711 | hmac->keyLen = (word16)length;
|
---|
712 | /* store key in ipad */
|
---|
713 | XMEMCPY(hmac->ipad, key, length);
|
---|
714 | }
|
---|
715 |
|
---|
716 | #endif /* HAVE_CAVIUM */
|
---|
717 |
|
---|
718 | int wolfSSL_GetHmacMaxSize(void)
|
---|
719 | {
|
---|
720 | return MAX_DIGEST_SIZE;
|
---|
721 | }
|
---|
722 |
|
---|
723 | #ifdef HAVE_HKDF
|
---|
724 |
|
---|
725 | #ifdef min
|
---|
726 | #define WOLFSSL_HAVE_MIN
|
---|
727 | #endif
|
---|
728 | #ifndef WOLFSSL_HAVE_MIN
|
---|
729 | #define WOLFSSL_HAVE_MIN
|
---|
730 |
|
---|
731 | static INLINE word32 min(word32 a, word32 b)
|
---|
732 | {
|
---|
733 | return a > b ? b : a;
|
---|
734 | }
|
---|
735 |
|
---|
736 | #endif /* WOLFSSL_HAVE_MIN */
|
---|
737 |
|
---|
738 |
|
---|
739 | static INLINE int GetHashSizeByType(int type)
|
---|
740 | {
|
---|
741 | if (!(type == MD5 || type == SHA || type == SHA256 || type == SHA384
|
---|
742 | || type == SHA512 || type == BLAKE2B_ID))
|
---|
743 | return BAD_FUNC_ARG;
|
---|
744 |
|
---|
745 | switch (type) {
|
---|
746 | #ifndef NO_MD5
|
---|
747 | case MD5:
|
---|
748 | return MD5_DIGEST_SIZE;
|
---|
749 | #endif
|
---|
750 |
|
---|
751 | #ifndef NO_SHA
|
---|
752 | case SHA:
|
---|
753 | return SHA_DIGEST_SIZE;
|
---|
754 | #endif
|
---|
755 |
|
---|
756 | #ifndef NO_SHA256
|
---|
757 | case SHA256:
|
---|
758 | return SHA256_DIGEST_SIZE;
|
---|
759 | #endif
|
---|
760 |
|
---|
761 | #ifdef WOLFSSL_SHA384
|
---|
762 | case SHA384:
|
---|
763 | return SHA384_DIGEST_SIZE;
|
---|
764 | #endif
|
---|
765 |
|
---|
766 | #ifdef WOLFSSL_SHA512
|
---|
767 | case SHA512:
|
---|
768 | return SHA512_DIGEST_SIZE;
|
---|
769 | #endif
|
---|
770 |
|
---|
771 | #ifdef HAVE_BLAKE2
|
---|
772 | case BLAKE2B_ID:
|
---|
773 | return BLAKE2B_OUTBYTES;
|
---|
774 | #endif
|
---|
775 |
|
---|
776 | default:
|
---|
777 | return BAD_FUNC_ARG;
|
---|
778 | }
|
---|
779 | }
|
---|
780 |
|
---|
781 |
|
---|
782 | /* HMAC-KDF with hash type, optional salt and info, return 0 on success */
|
---|
783 | int wc_HKDF(int type, const byte* inKey, word32 inKeySz,
|
---|
784 | const byte* salt, word32 saltSz,
|
---|
785 | const byte* info, word32 infoSz,
|
---|
786 | byte* out, word32 outSz)
|
---|
787 | {
|
---|
788 | Hmac myHmac;
|
---|
789 | #ifdef WOLFSSL_SMALL_STACK
|
---|
790 | byte* tmp;
|
---|
791 | byte* prk;
|
---|
792 | #else
|
---|
793 | byte tmp[MAX_DIGEST_SIZE]; /* localSalt helper and T */
|
---|
794 | byte prk[MAX_DIGEST_SIZE];
|
---|
795 | #endif
|
---|
796 | const byte* localSalt; /* either points to user input or tmp */
|
---|
797 | int hashSz = GetHashSizeByType(type);
|
---|
798 | word32 outIdx = 0;
|
---|
799 | byte n = 0x1;
|
---|
800 | int ret;
|
---|
801 |
|
---|
802 | if (hashSz < 0)
|
---|
803 | return BAD_FUNC_ARG;
|
---|
804 |
|
---|
805 | #ifdef WOLFSSL_SMALL_STACK
|
---|
806 | tmp = (byte*)XMALLOC(MAX_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
807 | if (tmp == NULL)
|
---|
808 | return MEMORY_E;
|
---|
809 |
|
---|
810 | prk = (byte*)XMALLOC(MAX_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
811 | if (prk == NULL) {
|
---|
812 | XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
813 | return MEMORY_E;
|
---|
814 | }
|
---|
815 | #endif
|
---|
816 |
|
---|
817 | localSalt = salt;
|
---|
818 | if (localSalt == NULL) {
|
---|
819 | XMEMSET(tmp, 0, hashSz);
|
---|
820 | localSalt = tmp;
|
---|
821 | saltSz = hashSz;
|
---|
822 | }
|
---|
823 |
|
---|
824 | do {
|
---|
825 | ret = wc_HmacSetKey(&myHmac, type, localSalt, saltSz);
|
---|
826 | if (ret != 0)
|
---|
827 | break;
|
---|
828 | ret = wc_HmacUpdate(&myHmac, inKey, inKeySz);
|
---|
829 | if (ret != 0)
|
---|
830 | break;
|
---|
831 | ret = wc_HmacFinal(&myHmac, prk);
|
---|
832 | } while (0);
|
---|
833 |
|
---|
834 | if (ret == 0) {
|
---|
835 | while (outIdx < outSz) {
|
---|
836 | int tmpSz = (n == 1) ? 0 : hashSz;
|
---|
837 | word32 left = outSz - outIdx;
|
---|
838 |
|
---|
839 | ret = wc_HmacSetKey(&myHmac, type, prk, hashSz);
|
---|
840 | if (ret != 0)
|
---|
841 | break;
|
---|
842 | ret = wc_HmacUpdate(&myHmac, tmp, tmpSz);
|
---|
843 | if (ret != 0)
|
---|
844 | break;
|
---|
845 | ret = wc_HmacUpdate(&myHmac, info, infoSz);
|
---|
846 | if (ret != 0)
|
---|
847 | break;
|
---|
848 | ret = wc_HmacUpdate(&myHmac, &n, 1);
|
---|
849 | if (ret != 0)
|
---|
850 | break;
|
---|
851 | ret = wc_HmacFinal(&myHmac, tmp);
|
---|
852 | if (ret != 0)
|
---|
853 | break;
|
---|
854 |
|
---|
855 | left = min(left, (word32)hashSz);
|
---|
856 | XMEMCPY(out+outIdx, tmp, left);
|
---|
857 |
|
---|
858 | outIdx += hashSz;
|
---|
859 | n++;
|
---|
860 | }
|
---|
861 | }
|
---|
862 |
|
---|
863 | #ifdef WOLFSSL_SMALL_STACK
|
---|
864 | XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
865 | XFREE(prk, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
866 | #endif
|
---|
867 |
|
---|
868 | return ret;
|
---|
869 | }
|
---|
870 |
|
---|
871 | #endif /* HAVE_HKDF */
|
---|
872 |
|
---|
873 | #endif /* HAVE_FIPS */
|
---|
874 | #endif /* NO_HMAC */
|
---|