1 | /* aes.h
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2 | *
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3 | * Copyright (C) 2006-2020 wolfSSL Inc.
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4 | *
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5 | * This file is part of wolfSSL.
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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 02110-1335, USA
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20 | */
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21 |
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22 | /*!
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23 | \file wolfssl/wolfcrypt/aes.h
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24 | */
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25 | /*
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26 |
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27 | DESCRIPTION
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28 | This library provides the interfaces to the Advanced Encryption Standard (AES)
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29 | for encrypting and decrypting data. AES is the standard known for a symmetric
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30 | block cipher mechanism that uses n-bit binary string parameter key with 128-bits,
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31 | 192-bits, and 256-bits of key sizes.
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32 |
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33 | */
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34 | #ifndef WOLF_CRYPT_AES_H
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35 | #define WOLF_CRYPT_AES_H
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36 |
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37 | #include <wolfssl/wolfcrypt/types.h>
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38 |
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39 | #ifndef NO_AES
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40 |
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41 | #if defined(HAVE_FIPS) && \
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42 | defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
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43 | #include <wolfssl/wolfcrypt/fips.h>
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44 | #endif /* HAVE_FIPS_VERSION >= 2 */
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45 |
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46 | /* included for fips @wc_fips */
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47 | #if defined(HAVE_FIPS) && \
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48 | (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2))
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49 | #include <cyassl/ctaocrypt/aes.h>
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50 | #if defined(CYASSL_AES_COUNTER) && !defined(WOLFSSL_AES_COUNTER)
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51 | #define WOLFSSL_AES_COUNTER
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52 | #endif
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53 | #if !defined(WOLFSSL_AES_DIRECT) && defined(CYASSL_AES_DIRECT)
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54 | #define WOLFSSL_AES_DIRECT
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55 | #endif
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56 | #endif
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57 |
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58 | #ifndef WC_NO_RNG
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59 | #include <wolfssl/wolfcrypt/random.h>
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60 | #endif
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61 | #ifdef STM32_CRYPTO
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62 | #include <wolfssl/wolfcrypt/port/st/stm32.h>
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63 | #endif
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64 |
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65 | #ifdef WOLFSSL_IMXRT_DCP
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66 | #include "fsl_dcp.h"
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67 | #endif
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68 |
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69 | #ifdef WOLFSSL_XILINX_CRYPT
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70 | #include "xsecure_aes.h"
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71 | #endif
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72 |
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73 | #if defined(WOLFSSL_AFALG) || defined(WOLFSSL_AFALG_XILINX_AES)
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74 | /* included for struct msghdr */
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75 | #include <wolfssl/wolfcrypt/port/af_alg/wc_afalg.h>
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76 | #endif
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77 |
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78 | #if defined(WOLFSSL_DEVCRYPTO_AES) || defined(WOLFSSL_DEVCRYPTO_CBC)
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79 | #include <wolfssl/wolfcrypt/port/devcrypto/wc_devcrypto.h>
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80 | #endif
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81 |
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82 | #ifdef WOLFSSL_SILABS_SE_ACCEL
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83 | #include <wolfssl/wolfcrypt/port/silabs/silabs_aes.h>
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84 | #endif
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85 |
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86 |
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87 | #if defined(HAVE_AESGCM) && !defined(WC_NO_RNG)
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88 | #include <wolfssl/wolfcrypt/random.h>
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89 | #endif
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90 |
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91 | #if defined(WOLFSSL_CRYPTOCELL)
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92 | #include <wolfssl/wolfcrypt/port/arm/cryptoCell.h>
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93 | #endif
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94 |
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95 | #if defined(WOLFSSL_RENESAS_TSIP_TLS) && \
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96 | defined(WOLFSSL_RENESAS_TSIP_TLS_AES_CRYPT)
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97 | #include <wolfssl/wolfcrypt/port/Renesas/renesas-tsip-crypt.h>
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98 | #endif
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99 |
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100 | #ifdef __cplusplus
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101 | extern "C" {
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102 | #endif
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103 |
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104 | #ifndef WOLFSSL_AES_KEY_SIZE_ENUM
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105 | #define WOLFSSL_AES_KEY_SIZE_ENUM
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106 | /* these are required for FIPS and non-FIPS */
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107 | enum {
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108 | AES_128_KEY_SIZE = 16, /* for 128 bit */
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109 | AES_192_KEY_SIZE = 24, /* for 192 bit */
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110 | AES_256_KEY_SIZE = 32, /* for 256 bit */
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111 |
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112 | AES_IV_SIZE = 16, /* always block size */
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113 | };
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114 | #endif
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115 |
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116 | /* avoid redefinition of structs */
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117 | #if !defined(HAVE_FIPS) || \
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118 | (defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2))
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119 |
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120 | #ifdef WOLFSSL_ASYNC_CRYPT
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121 | #include <wolfssl/wolfcrypt/async.h>
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122 | #endif
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123 |
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124 | enum {
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125 | AES_ENC_TYPE = WC_CIPHER_AES, /* cipher unique type */
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126 | AES_ENCRYPTION = 0,
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127 | AES_DECRYPTION = 1,
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128 |
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129 | AES_BLOCK_SIZE = 16,
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130 |
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131 | KEYWRAP_BLOCK_SIZE = 8,
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132 |
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133 | GCM_NONCE_MAX_SZ = 16, /* wolfCrypt's maximum nonce size allowed. */
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134 | GCM_NONCE_MID_SZ = 12, /* The usual default nonce size for AES-GCM. */
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135 | GCM_NONCE_MIN_SZ = 8, /* wolfCrypt's minimum nonce size allowed. */
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136 | CCM_NONCE_MIN_SZ = 7,
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137 | CCM_NONCE_MAX_SZ = 13,
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138 | CTR_SZ = 4,
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139 | AES_IV_FIXED_SZ = 4,
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140 | #ifdef WOLFSSL_AES_CFB
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141 | AES_CFB_MODE = 1,
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142 | #endif
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143 | #ifdef WOLFSSL_AES_OFB
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144 | AES_OFB_MODE = 2,
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145 | #endif
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146 | #ifdef WOLFSSL_AES_XTS
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147 | AES_XTS_MODE = 3,
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148 | #endif
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149 |
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150 | #ifdef HAVE_PKCS11
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151 | AES_MAX_ID_LEN = 32,
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152 | AES_MAX_LABEL_LEN = 32,
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153 | #endif
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154 | };
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155 |
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156 |
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157 | struct Aes {
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158 | /* AESNI needs key first, rounds 2nd, not sure why yet */
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159 | ALIGN16 word32 key[60];
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160 | word32 rounds;
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161 | int keylen;
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162 |
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163 | ALIGN16 word32 reg[AES_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */
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164 | ALIGN16 word32 tmp[AES_BLOCK_SIZE / sizeof(word32)]; /* same */
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165 |
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166 | #if defined(HAVE_AESGCM) || defined(HAVE_AESCCM)
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167 | word32 invokeCtr[2];
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168 | word32 nonceSz;
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169 | #endif
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170 | #ifdef HAVE_AESGCM
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171 | ALIGN16 byte H[AES_BLOCK_SIZE];
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172 | #ifdef OPENSSL_EXTRA
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173 | word32 aadH[4]; /* additional authenticated data GHASH */
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174 | word32 aadLen; /* additional authenticated data len */
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175 | #endif
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176 |
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177 | #ifdef GCM_TABLE
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178 | /* key-based fast multiplication table. */
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179 | ALIGN16 byte M0[256][AES_BLOCK_SIZE];
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180 | #elif defined(GCM_TABLE_4BIT)
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181 | #if defined(BIG_ENDIAN_ORDER) || defined(WC_16BIT_CPU)
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182 | ALIGN16 byte M0[16][AES_BLOCK_SIZE];
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183 | #else
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184 | ALIGN16 byte M0[32][AES_BLOCK_SIZE];
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185 | #endif
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186 | #endif /* GCM_TABLE */
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187 | #ifdef HAVE_CAVIUM_OCTEON_SYNC
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188 | word32 y0;
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189 | #endif
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190 | #endif /* HAVE_AESGCM */
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191 | #ifdef WOLFSSL_AESNI
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192 | byte use_aesni;
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193 | #endif /* WOLFSSL_AESNI */
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194 | #ifdef WOLF_CRYPTO_CB
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195 | int devId;
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196 | void* devCtx;
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197 | #endif
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198 | #ifdef HAVE_PKCS11
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199 | byte id[AES_MAX_ID_LEN];
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200 | int idLen;
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201 | char label[AES_MAX_LABEL_LEN];
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202 | int labelLen;
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203 | #endif
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204 | #ifdef WOLFSSL_ASYNC_CRYPT
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205 | WC_ASYNC_DEV asyncDev;
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206 | #endif /* WOLFSSL_ASYNC_CRYPT */
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207 | #if defined(WOLFSSL_AES_COUNTER) || defined(WOLFSSL_AES_CFB) || \
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208 | defined(WOLFSSL_AES_OFB) || defined(WOLFSSL_AES_XTS)
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209 | word32 left; /* unused bytes left from last call */
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210 | #endif
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211 | #ifdef WOLFSSL_XILINX_CRYPT
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212 | XSecure_Aes xilAes;
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213 | XCsuDma dma;
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214 | word32 key_init[8];
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215 | word32 kup;
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216 | #endif
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217 | #if defined(WOLFSSL_AFALG) || defined(WOLFSSL_AFALG_XILINX_AES)
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218 | int alFd; /* server socket to bind to */
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219 | int rdFd; /* socket to read from */
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220 | struct msghdr msg;
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221 | int dir; /* flag for encrpyt or decrypt */
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222 | #ifdef WOLFSSL_AFALG_XILINX_AES
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223 | word32 msgBuf[CMSG_SPACE(4) + CMSG_SPACE(sizeof(struct af_alg_iv) +
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224 | GCM_NONCE_MID_SZ)];
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225 | #endif
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226 | #endif
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227 | #if defined(WOLF_CRYPTO_CB) || (defined(WOLFSSL_DEVCRYPTO) && \
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228 | (defined(WOLFSSL_DEVCRYPTO_AES) || defined(WOLFSSL_DEVCRYPTO_CBC))) || \
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229 | (defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_AES))
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230 | word32 devKey[AES_MAX_KEY_SIZE/WOLFSSL_BIT_SIZE/sizeof(word32)]; /* raw key */
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231 | #ifdef HAVE_CAVIUM_OCTEON_SYNC
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232 | int keySet;
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233 | #endif
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234 | #endif
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235 | #if defined(WOLFSSL_DEVCRYPTO) && \
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236 | (defined(WOLFSSL_DEVCRYPTO_AES) || defined(WOLFSSL_DEVCRYPTO_CBC))
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237 | WC_CRYPTODEV ctx;
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238 | #endif
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239 | #if defined(WOLFSSL_CRYPTOCELL)
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240 | aes_context_t ctx;
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241 | #endif
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242 | #if defined(WOLFSSL_RENESAS_TSIP_TLS) && \
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243 | defined(WOLFSSL_RENESAS_TSIP_TLS_AES_CRYPT)
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244 | TSIP_AES_CTX ctx;
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245 | #endif
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246 | #if defined(WOLFSSL_IMXRT_DCP)
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247 | dcp_handle_t handle;
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248 | #endif
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249 | #if defined(WOLFSSL_SILABS_SE_ACCEL)
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250 | silabs_aes_t ctx;
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251 | #endif
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252 | void* heap; /* memory hint to use */
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253 | };
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254 |
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255 | #ifndef WC_AES_TYPE_DEFINED
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256 | typedef struct Aes Aes;
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257 | #define WC_AES_TYPE_DEFINED
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258 | #endif
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259 |
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260 | #ifdef WOLFSSL_AES_XTS
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261 | typedef struct XtsAes {
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262 | Aes aes;
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263 | Aes tweak;
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264 | } XtsAes;
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265 | #endif
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266 |
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267 | #ifdef HAVE_AESGCM
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268 | typedef struct Gmac {
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269 | Aes aes;
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270 | } Gmac;
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271 | #endif /* HAVE_AESGCM */
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272 | #endif /* HAVE_FIPS */
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273 |
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274 |
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275 | /* Authenticate cipher function prototypes */
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276 | typedef int (*wc_AesAuthEncryptFunc)(Aes* aes, byte* out,
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277 | const byte* in, word32 sz,
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278 | const byte* iv, word32 ivSz,
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279 | byte* authTag, word32 authTagSz,
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280 | const byte* authIn, word32 authInSz);
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281 | typedef int (*wc_AesAuthDecryptFunc)(Aes* aes, byte* out,
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282 | const byte* in, word32 sz,
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283 | const byte* iv, word32 ivSz,
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284 | const byte* authTag, word32 authTagSz,
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285 | const byte* authIn, word32 authInSz);
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286 |
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287 | /* AES-CBC */
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288 | WOLFSSL_API int wc_AesSetKey(Aes* aes, const byte* key, word32 len,
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289 | const byte* iv, int dir);
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290 | WOLFSSL_API int wc_AesSetIV(Aes* aes, const byte* iv);
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291 |
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292 | #ifdef HAVE_AES_CBC
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293 | WOLFSSL_API int wc_AesCbcEncrypt(Aes* aes, byte* out,
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294 | const byte* in, word32 sz);
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295 | WOLFSSL_API int wc_AesCbcDecrypt(Aes* aes, byte* out,
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296 | const byte* in, word32 sz);
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297 | #endif
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298 |
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299 | #ifdef WOLFSSL_AES_CFB
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300 | WOLFSSL_API int wc_AesCfbEncrypt(Aes* aes, byte* out,
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301 | const byte* in, word32 sz);
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302 | WOLFSSL_API int wc_AesCfb1Encrypt(Aes* aes, byte* out,
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303 | const byte* in, word32 sz);
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304 | WOLFSSL_API int wc_AesCfb8Encrypt(Aes* aes, byte* out,
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305 | const byte* in, word32 sz);
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306 | #ifdef HAVE_AES_DECRYPT
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307 | WOLFSSL_API int wc_AesCfbDecrypt(Aes* aes, byte* out,
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308 | const byte* in, word32 sz);
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309 | WOLFSSL_API int wc_AesCfb1Decrypt(Aes* aes, byte* out,
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310 | const byte* in, word32 sz);
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311 | WOLFSSL_API int wc_AesCfb8Decrypt(Aes* aes, byte* out,
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312 | const byte* in, word32 sz);
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313 | #endif /* HAVE_AES_DECRYPT */
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314 | #endif /* WOLFSSL_AES_CFB */
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315 |
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316 | #ifdef WOLFSSL_AES_OFB
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317 | WOLFSSL_API int wc_AesOfbEncrypt(Aes* aes, byte* out,
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318 | const byte* in, word32 sz);
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319 | #ifdef HAVE_AES_DECRYPT
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320 | WOLFSSL_API int wc_AesOfbDecrypt(Aes* aes, byte* out,
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321 | const byte* in, word32 sz);
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322 | #endif /* HAVE_AES_DECRYPT */
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323 | #endif /* WOLFSSL_AES_OFB */
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324 |
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325 | #ifdef HAVE_AES_ECB
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326 | WOLFSSL_API int wc_AesEcbEncrypt(Aes* aes, byte* out,
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327 | const byte* in, word32 sz);
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328 | WOLFSSL_API int wc_AesEcbDecrypt(Aes* aes, byte* out,
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329 | const byte* in, word32 sz);
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330 | #endif
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331 |
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332 | /* AES-CTR */
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333 | #ifdef WOLFSSL_AES_COUNTER
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334 | WOLFSSL_API int wc_AesCtrEncrypt(Aes* aes, byte* out,
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335 | const byte* in, word32 sz);
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336 | #endif
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337 | /* AES-DIRECT */
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338 | #if defined(WOLFSSL_AES_DIRECT)
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339 | WOLFSSL_API void wc_AesEncryptDirect(Aes* aes, byte* out, const byte* in);
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340 | WOLFSSL_API void wc_AesDecryptDirect(Aes* aes, byte* out, const byte* in);
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341 | WOLFSSL_API int wc_AesSetKeyDirect(Aes* aes, const byte* key, word32 len,
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342 | const byte* iv, int dir);
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343 | #endif
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344 |
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345 | #ifdef HAVE_AESGCM
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346 | #ifdef WOLFSSL_XILINX_CRYPT
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347 | WOLFSSL_API int wc_AesGcmSetKey_ex(Aes* aes, const byte* key, word32 len,
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348 | word32 kup);
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349 | #elif defined(WOLFSSL_AFALG_XILINX_AES)
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350 | WOLFSSL_LOCAL int wc_AesGcmSetKey_ex(Aes* aes, const byte* key, word32 len,
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351 | word32 kup);
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352 | #endif
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353 | WOLFSSL_API int wc_AesGcmSetKey(Aes* aes, const byte* key, word32 len);
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354 | WOLFSSL_API int wc_AesGcmEncrypt(Aes* aes, byte* out,
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355 | const byte* in, word32 sz,
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356 | const byte* iv, word32 ivSz,
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357 | byte* authTag, word32 authTagSz,
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358 | const byte* authIn, word32 authInSz);
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359 | WOLFSSL_API int wc_AesGcmDecrypt(Aes* aes, byte* out,
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360 | const byte* in, word32 sz,
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361 | const byte* iv, word32 ivSz,
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362 | const byte* authTag, word32 authTagSz,
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363 | const byte* authIn, word32 authInSz);
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364 |
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365 | #ifndef WC_NO_RNG
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366 | WOLFSSL_API int wc_AesGcmSetExtIV(Aes* aes, const byte* iv, word32 ivSz);
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367 | WOLFSSL_API int wc_AesGcmSetIV(Aes* aes, word32 ivSz,
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368 | const byte* ivFixed, word32 ivFixedSz,
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369 | WC_RNG* rng);
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370 | WOLFSSL_API int wc_AesGcmEncrypt_ex(Aes* aes, byte* out,
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371 | const byte* in, word32 sz,
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372 | byte* ivOut, word32 ivOutSz,
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373 | byte* authTag, word32 authTagSz,
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374 | const byte* authIn, word32 authInSz);
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375 | #endif /* WC_NO_RNG */
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376 |
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377 | WOLFSSL_API int wc_GmacSetKey(Gmac* gmac, const byte* key, word32 len);
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378 | WOLFSSL_API int wc_GmacUpdate(Gmac* gmac, const byte* iv, word32 ivSz,
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379 | const byte* authIn, word32 authInSz,
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380 | byte* authTag, word32 authTagSz);
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381 | #ifndef WC_NO_RNG
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382 | WOLFSSL_API int wc_Gmac(const byte* key, word32 keySz, byte* iv, word32 ivSz,
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383 | const byte* authIn, word32 authInSz,
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384 | byte* authTag, word32 authTagSz, WC_RNG* rng);
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385 | WOLFSSL_API int wc_GmacVerify(const byte* key, word32 keySz,
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386 | const byte* iv, word32 ivSz,
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387 | const byte* authIn, word32 authInSz,
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388 | const byte* authTag, word32 authTagSz);
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389 | #endif /* WC_NO_RNG */
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390 | WOLFSSL_LOCAL void GHASH(Aes* aes, const byte* a, word32 aSz, const byte* c,
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391 | word32 cSz, byte* s, word32 sSz);
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392 | #endif /* HAVE_AESGCM */
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393 | #ifdef HAVE_AESCCM
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394 | WOLFSSL_LOCAL int wc_AesCcmCheckTagSize(int sz);
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395 | WOLFSSL_API int wc_AesCcmSetKey(Aes* aes, const byte* key, word32 keySz);
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396 | WOLFSSL_API int wc_AesCcmEncrypt(Aes* aes, byte* out,
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397 | const byte* in, word32 inSz,
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398 | const byte* nonce, word32 nonceSz,
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399 | byte* authTag, word32 authTagSz,
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400 | const byte* authIn, word32 authInSz);
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401 | WOLFSSL_API int wc_AesCcmDecrypt(Aes* aes, byte* out,
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402 | const byte* in, word32 inSz,
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403 | const byte* nonce, word32 nonceSz,
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404 | const byte* authTag, word32 authTagSz,
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405 | const byte* authIn, word32 authInSz);
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406 | WOLFSSL_API int wc_AesCcmSetNonce(Aes* aes,
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407 | const byte* nonce, word32 nonceSz);
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408 | WOLFSSL_API int wc_AesCcmEncrypt_ex(Aes* aes, byte* out,
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409 | const byte* in, word32 sz,
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410 | byte* ivOut, word32 ivOutSz,
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411 | byte* authTag, word32 authTagSz,
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412 | const byte* authIn, word32 authInSz);
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413 | #endif /* HAVE_AESCCM */
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414 | #ifdef HAVE_AES_KEYWRAP
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415 | WOLFSSL_API int wc_AesKeyWrap(const byte* key, word32 keySz,
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416 | const byte* in, word32 inSz,
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417 | byte* out, word32 outSz,
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418 | const byte* iv);
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419 | WOLFSSL_API int wc_AesKeyUnWrap(const byte* key, word32 keySz,
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420 | const byte* in, word32 inSz,
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421 | byte* out, word32 outSz,
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422 | const byte* iv);
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423 | #endif /* HAVE_AES_KEYWRAP */
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424 |
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425 | #ifdef WOLFSSL_AES_XTS
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426 |
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427 | WOLFSSL_API int wc_AesXtsSetKey(XtsAes* aes, const byte* key,
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428 | word32 len, int dir, void* heap, int devId);
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429 |
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430 | WOLFSSL_API int wc_AesXtsEncryptSector(XtsAes* aes, byte* out,
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431 | const byte* in, word32 sz, word64 sector);
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432 |
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433 | WOLFSSL_API int wc_AesXtsDecryptSector(XtsAes* aes, byte* out,
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434 | const byte* in, word32 sz, word64 sector);
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435 |
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436 | WOLFSSL_API int wc_AesXtsEncrypt(XtsAes* aes, byte* out,
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437 | const byte* in, word32 sz, const byte* i, word32 iSz);
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438 |
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439 | WOLFSSL_API int wc_AesXtsDecrypt(XtsAes* aes, byte* out,
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440 | const byte* in, word32 sz, const byte* i, word32 iSz);
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441 |
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442 | WOLFSSL_API int wc_AesXtsFree(XtsAes* aes);
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443 | #endif
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444 |
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445 | WOLFSSL_API int wc_AesGetKeySize(Aes* aes, word32* keySize);
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446 |
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447 | WOLFSSL_API int wc_AesInit(Aes* aes, void* heap, int devId);
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448 | #ifdef HAVE_PKCS11
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449 | WOLFSSL_API int wc_AesInit_Id(Aes* aes, unsigned char* id, int len, void* heap,
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450 | int devId);
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451 | WOLFSSL_API int wc_AesInit_Label(Aes* aes, const char* label, void* heap,
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452 | int devId);
|
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453 | #endif
|
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454 | WOLFSSL_API void wc_AesFree(Aes* aes);
|
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455 |
|
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456 | #ifdef __cplusplus
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457 | } /* extern "C" */
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458 | #endif
|
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459 |
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460 |
|
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461 | #endif /* NO_AES */
|
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462 | #endif /* WOLF_CRYPT_AES_H */
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