Ashley Mills / cyassl-lib

This is a port of cyaSSL 2.7.0.

Dependents:   CyaSSL_DTLS_Cellular CyaSSL_DTLS_Ethernet

ctaocrypt/src/aes.c@1:c0ce1562443a, 2013-09-05 (annotated)

Committer:
ashleymills
Date:
Thu Sep 05 15:55:50 2013 +0000
Revision:
1:c0ce1562443a
Parent:
0:714293de3836 
Nothing;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ashleymills 0:714293de3836 1 /* aes.c
ashleymills 0:714293de3836 2 *
ashleymills 0:714293de3836 3 * Copyright (C) 2006-2013 wolfSSL Inc.
ashleymills 0:714293de3836 4 *
ashleymills 0:714293de3836 5 * This file is part of CyaSSL.
ashleymills 0:714293de3836 6 *
ashleymills 0:714293de3836 7 * CyaSSL is free software; you can redistribute it and/or modify
ashleymills 0:714293de3836 8 * it under the terms of the GNU General Public License as published by
ashleymills 0:714293de3836 9 * the Free Software Foundation; either version 2 of the License, or
ashleymills 0:714293de3836 10 * (at your option) any later version.
ashleymills 0:714293de3836 11 *
ashleymills 0:714293de3836 12 * CyaSSL is distributed in the hope that it will be useful,
ashleymills 0:714293de3836 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ashleymills 0:714293de3836 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
ashleymills 0:714293de3836 15 * GNU General Public License for more details.
ashleymills 0:714293de3836 16 *
ashleymills 0:714293de3836 17 * You should have received a copy of the GNU General Public License
ashleymills 0:714293de3836 18 * along with this program; if not, write to the Free Software
ashleymills 0:714293de3836 19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
ashleymills 0:714293de3836 20 */
ashleymills 0:714293de3836 21
ashleymills 0:714293de3836 22 #ifdef HAVE_CONFIG_H
ashleymills 0:714293de3836 23 #include <config.h>
ashleymills 0:714293de3836 24 #endif
ashleymills 0:714293de3836 25
ashleymills 0:714293de3836 26 #include <cyassl/ctaocrypt/settings.h>
ashleymills 0:714293de3836 27
ashleymills 0:714293de3836 28 #ifndef NO_AES
ashleymills 0:714293de3836 29
ashleymills 0:714293de3836 30 #include <cyassl/ctaocrypt/aes.h>
ashleymills 0:714293de3836 31 #include <cyassl/ctaocrypt/ctaoerror2.h>
ashleymills 0:714293de3836 32 #include <cyassl/ctaocrypt/logging.h>
ashleymills 0:714293de3836 33 #ifdef NO_INLINE
ashleymills 0:714293de3836 34 #include <cyassl/ctaocrypt/misc.h>
ashleymills 0:714293de3836 35 #else
ashleymills 0:714293de3836 36 #include <ctaocrypt/src/misc.c>
ashleymills 0:714293de3836 37 #endif
ashleymills 0:714293de3836 38
ashleymills 0:714293de3836 39
ashleymills 0:714293de3836 40 #ifdef _MSC_VER
ashleymills 0:714293de3836 41 /* 4127 warning constant while(1) */
ashleymills 0:714293de3836 42 #pragma warning(disable: 4127)
ashleymills 0:714293de3836 43 #endif
ashleymills 0:714293de3836 44
ashleymills 0:714293de3836 45
ashleymills 0:714293de3836 46 #ifdef HAVE_CAVIUM
ashleymills 0:714293de3836 47 static int AesCaviumSetKey(Aes* aes, const byte* key, word32 length,
ashleymills 0:714293de3836 48 const byte* iv);
ashleymills 0:714293de3836 49 static void AesCaviumCbcEncrypt(Aes* aes, byte* out, const byte* in,
ashleymills 0:714293de3836 50 word32 length);
ashleymills 0:714293de3836 51 static void AesCaviumCbcDecrypt(Aes* aes, byte* out, const byte* in,
ashleymills 0:714293de3836 52 word32 length);
ashleymills 0:714293de3836 53 #endif
ashleymills 0:714293de3836 54
ashleymills 0:714293de3836 55 #ifdef STM32F2_CRYPTO
ashleymills 0:714293de3836 56 /*
ashleymills 0:714293de3836 57 * STM32F2 hardware AES support through the STM32F2 standard peripheral
ashleymills 0:714293de3836 58 * library. Documentation located in STM32F2xx Standard Peripheral Library
ashleymills 0:714293de3836 59 * document (See note in README).
ashleymills 0:714293de3836 60 */
ashleymills 0:714293de3836 61 #include "stm32f2xx.h"
ashleymills 0:714293de3836 62 #include "stm32f2xx_cryp.h"
ashleymills 0:714293de3836 63
ashleymills 0:714293de3836 64 int AesSetKey(Aes* aes, const byte* userKey, word32 keylen, const byte* iv,
ashleymills 0:714293de3836 65 int dir)
ashleymills 0:714293de3836 66 {
ashleymills 0:714293de3836 67 word32 *rk = aes->key;
ashleymills 0:714293de3836 68
ashleymills 0:714293de3836 69 if (!((keylen == 16) || (keylen == 24) || (keylen == 32)))
ashleymills 0:714293de3836 70 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 71
ashleymills 0:714293de3836 72 aes->rounds = keylen/4 + 6;
ashleymills 0:714293de3836 73 XMEMCPY(rk, userKey, keylen);
ashleymills 0:714293de3836 74 ByteReverseWords(rk, rk, keylen);
ashleymills 0:714293de3836 75
ashleymills 0:714293de3836 76 return AesSetIV(aes, iv);
ashleymills 0:714293de3836 77 }
ashleymills 0:714293de3836 78
ashleymills 0:714293de3836 79 int AesCbcEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
ashleymills 0:714293de3836 80 {
ashleymills 0:714293de3836 81 word32 *enc_key, *iv;
ashleymills 0:714293de3836 82 CRYP_InitTypeDef AES_CRYP_InitStructure;
ashleymills 0:714293de3836 83 CRYP_KeyInitTypeDef AES_CRYP_KeyInitStructure;
ashleymills 0:714293de3836 84 CRYP_IVInitTypeDef AES_CRYP_IVInitStructure;
ashleymills 0:714293de3836 85
ashleymills 0:714293de3836 86 enc_key = aes->key;
ashleymills 0:714293de3836 87 iv = aes->reg;
ashleymills 0:714293de3836 88
ashleymills 0:714293de3836 89 /* crypto structure initialization */
ashleymills 0:714293de3836 90 CRYP_KeyStructInit(&AES_CRYP_KeyInitStructure);
ashleymills 0:714293de3836 91 CRYP_StructInit(&AES_CRYP_InitStructure);
ashleymills 0:714293de3836 92 CRYP_IVStructInit(&AES_CRYP_IVInitStructure);
ashleymills 0:714293de3836 93
ashleymills 0:714293de3836 94 /* reset registers to their default values */
ashleymills 0:714293de3836 95 CRYP_DeInit();
ashleymills 0:714293de3836 96
ashleymills 0:714293de3836 97 /* load key into correct registers */
ashleymills 0:714293de3836 98 switch(aes->rounds)
ashleymills 0:714293de3836 99 {
ashleymills 0:714293de3836 100 case 10: /* 128-bit key */
ashleymills 0:714293de3836 101 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_128b;
ashleymills 0:714293de3836 102 AES_CRYP_KeyInitStructure.CRYP_Key2Left = enc_key[0];
ashleymills 0:714293de3836 103 AES_CRYP_KeyInitStructure.CRYP_Key2Right = enc_key[1];
ashleymills 0:714293de3836 104 AES_CRYP_KeyInitStructure.CRYP_Key3Left = enc_key[2];
ashleymills 0:714293de3836 105 AES_CRYP_KeyInitStructure.CRYP_Key3Right = enc_key[3];
ashleymills 0:714293de3836 106 break;
ashleymills 0:714293de3836 107
ashleymills 0:714293de3836 108 case 12: /* 192-bit key */
ashleymills 0:714293de3836 109 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_192b;
ashleymills 0:714293de3836 110 AES_CRYP_KeyInitStructure.CRYP_Key1Left = enc_key[0];
ashleymills 0:714293de3836 111 AES_CRYP_KeyInitStructure.CRYP_Key1Right = enc_key[1];
ashleymills 0:714293de3836 112 AES_CRYP_KeyInitStructure.CRYP_Key2Left = enc_key[2];
ashleymills 0:714293de3836 113 AES_CRYP_KeyInitStructure.CRYP_Key2Right = enc_key[3];
ashleymills 0:714293de3836 114 AES_CRYP_KeyInitStructure.CRYP_Key3Left = enc_key[4];
ashleymills 0:714293de3836 115 AES_CRYP_KeyInitStructure.CRYP_Key3Right = enc_key[5];
ashleymills 0:714293de3836 116 break;
ashleymills 0:714293de3836 117
ashleymills 0:714293de3836 118 case 14: /* 256-bit key */
ashleymills 0:714293de3836 119 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_256b;
ashleymills 0:714293de3836 120 AES_CRYP_KeyInitStructure.CRYP_Key0Left = enc_key[0];
ashleymills 0:714293de3836 121 AES_CRYP_KeyInitStructure.CRYP_Key0Right = enc_key[1];
ashleymills 0:714293de3836 122 AES_CRYP_KeyInitStructure.CRYP_Key1Left = enc_key[2];
ashleymills 0:714293de3836 123 AES_CRYP_KeyInitStructure.CRYP_Key1Right = enc_key[3];
ashleymills 0:714293de3836 124 AES_CRYP_KeyInitStructure.CRYP_Key2Left = enc_key[4];
ashleymills 0:714293de3836 125 AES_CRYP_KeyInitStructure.CRYP_Key2Right = enc_key[5];
ashleymills 0:714293de3836 126 AES_CRYP_KeyInitStructure.CRYP_Key3Left = enc_key[6];
ashleymills 0:714293de3836 127 AES_CRYP_KeyInitStructure.CRYP_Key3Right = enc_key[7];
ashleymills 0:714293de3836 128 break;
ashleymills 0:714293de3836 129
ashleymills 0:714293de3836 130 default:
ashleymills 0:714293de3836 131 break;
ashleymills 0:714293de3836 132 }
ashleymills 0:714293de3836 133 CRYP_KeyInit(&AES_CRYP_KeyInitStructure);
ashleymills 0:714293de3836 134
ashleymills 0:714293de3836 135 /* set iv */
ashleymills 0:714293de3836 136 ByteReverseWords(iv, iv, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 137 AES_CRYP_IVInitStructure.CRYP_IV0Left = iv[0];
ashleymills 0:714293de3836 138 AES_CRYP_IVInitStructure.CRYP_IV0Right = iv[1];
ashleymills 0:714293de3836 139 AES_CRYP_IVInitStructure.CRYP_IV1Left = iv[2];
ashleymills 0:714293de3836 140 AES_CRYP_IVInitStructure.CRYP_IV1Right = iv[3];
ashleymills 0:714293de3836 141 CRYP_IVInit(&AES_CRYP_IVInitStructure);
ashleymills 0:714293de3836 142
ashleymills 0:714293de3836 143 /* set direction, mode, and datatype */
ashleymills 0:714293de3836 144 AES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Encrypt;
ashleymills 0:714293de3836 145 AES_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_AES_CBC;
ashleymills 0:714293de3836 146 AES_CRYP_InitStructure.CRYP_DataType = CRYP_DataType_8b;
ashleymills 0:714293de3836 147 CRYP_Init(&AES_CRYP_InitStructure);
ashleymills 0:714293de3836 148
ashleymills 0:714293de3836 149 /* enable crypto processor */
ashleymills 0:714293de3836 150 CRYP_Cmd(ENABLE);
ashleymills 0:714293de3836 151
ashleymills 0:714293de3836 152 while (sz > 0)
ashleymills 0:714293de3836 153 {
ashleymills 0:714293de3836 154 /* flush IN/OUT FIFOs */
ashleymills 0:714293de3836 155 CRYP_FIFOFlush();
ashleymills 0:714293de3836 156
ashleymills 0:714293de3836 157 CRYP_DataIn(*(uint32_t*)&in[0]);
ashleymills 0:714293de3836 158 CRYP_DataIn(*(uint32_t*)&in[4]);
ashleymills 0:714293de3836 159 CRYP_DataIn(*(uint32_t*)&in[8]);
ashleymills 0:714293de3836 160 CRYP_DataIn(*(uint32_t*)&in[12]);
ashleymills 0:714293de3836 161
ashleymills 0:714293de3836 162 /* wait until the complete message has been processed */
ashleymills 0:714293de3836 163 while(CRYP_GetFlagStatus(CRYP_FLAG_BUSY) != RESET) {}
ashleymills 0:714293de3836 164
ashleymills 0:714293de3836 165 *(uint32_t*)&out[0] = CRYP_DataOut();
ashleymills 0:714293de3836 166 *(uint32_t*)&out[4] = CRYP_DataOut();
ashleymills 0:714293de3836 167 *(uint32_t*)&out[8] = CRYP_DataOut();
ashleymills 0:714293de3836 168 *(uint32_t*)&out[12] = CRYP_DataOut();
ashleymills 0:714293de3836 169
ashleymills 0:714293de3836 170 /* store iv for next call */
ashleymills 0:714293de3836 171 XMEMCPY(aes->reg, out + sz - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 172
ashleymills 0:714293de3836 173 sz -= 16;
ashleymills 0:714293de3836 174 in += 16;
ashleymills 0:714293de3836 175 out += 16;
ashleymills 0:714293de3836 176 }
ashleymills 0:714293de3836 177
ashleymills 0:714293de3836 178 /* disable crypto processor */
ashleymills 0:714293de3836 179 CRYP_Cmd(DISABLE);
ashleymills 0:714293de3836 180
ashleymills 0:714293de3836 181 return 0;
ashleymills 0:714293de3836 182 }
ashleymills 0:714293de3836 183
ashleymills 0:714293de3836 184 int AesCbcDecrypt(Aes* aes, byte* out, const byte* in, word32 sz)
ashleymills 0:714293de3836 185 {
ashleymills 0:714293de3836 186 word32 *dec_key, *iv;
ashleymills 0:714293de3836 187 CRYP_InitTypeDef AES_CRYP_InitStructure;
ashleymills 0:714293de3836 188 CRYP_KeyInitTypeDef AES_CRYP_KeyInitStructure;
ashleymills 0:714293de3836 189 CRYP_IVInitTypeDef AES_CRYP_IVInitStructure;
ashleymills 0:714293de3836 190
ashleymills 0:714293de3836 191 dec_key = aes->key;
ashleymills 0:714293de3836 192 iv = aes->reg;
ashleymills 0:714293de3836 193
ashleymills 0:714293de3836 194 /* crypto structure initialization */
ashleymills 0:714293de3836 195 CRYP_KeyStructInit(&AES_CRYP_KeyInitStructure);
ashleymills 0:714293de3836 196 CRYP_StructInit(&AES_CRYP_InitStructure);
ashleymills 0:714293de3836 197 CRYP_IVStructInit(&AES_CRYP_IVInitStructure);
ashleymills 0:714293de3836 198
ashleymills 0:714293de3836 199 /* if input and output same will overwrite input iv */
ashleymills 0:714293de3836 200 XMEMCPY(aes->tmp, in + sz - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 201
ashleymills 0:714293de3836 202 /* reset registers to their default values */
ashleymills 0:714293de3836 203 CRYP_DeInit();
ashleymills 0:714293de3836 204
ashleymills 0:714293de3836 205 /* load key into correct registers */
ashleymills 0:714293de3836 206 switch(aes->rounds)
ashleymills 0:714293de3836 207 {
ashleymills 0:714293de3836 208 case 10: /* 128-bit key */
ashleymills 0:714293de3836 209 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_128b;
ashleymills 0:714293de3836 210 AES_CRYP_KeyInitStructure.CRYP_Key2Left = dec_key[0];
ashleymills 0:714293de3836 211 AES_CRYP_KeyInitStructure.CRYP_Key2Right = dec_key[1];
ashleymills 0:714293de3836 212 AES_CRYP_KeyInitStructure.CRYP_Key3Left = dec_key[2];
ashleymills 0:714293de3836 213 AES_CRYP_KeyInitStructure.CRYP_Key3Right = dec_key[3];
ashleymills 0:714293de3836 214 break;
ashleymills 0:714293de3836 215
ashleymills 0:714293de3836 216 case 12: /* 192-bit key */
ashleymills 0:714293de3836 217 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_192b;
ashleymills 0:714293de3836 218 AES_CRYP_KeyInitStructure.CRYP_Key1Left = dec_key[0];
ashleymills 0:714293de3836 219 AES_CRYP_KeyInitStructure.CRYP_Key1Right = dec_key[1];
ashleymills 0:714293de3836 220 AES_CRYP_KeyInitStructure.CRYP_Key2Left = dec_key[2];
ashleymills 0:714293de3836 221 AES_CRYP_KeyInitStructure.CRYP_Key2Right = dec_key[3];
ashleymills 0:714293de3836 222 AES_CRYP_KeyInitStructure.CRYP_Key3Left = dec_key[4];
ashleymills 0:714293de3836 223 AES_CRYP_KeyInitStructure.CRYP_Key3Right = dec_key[5];
ashleymills 0:714293de3836 224 break;
ashleymills 0:714293de3836 225
ashleymills 0:714293de3836 226 case 14: /* 256-bit key */
ashleymills 0:714293de3836 227 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_256b;
ashleymills 0:714293de3836 228 AES_CRYP_KeyInitStructure.CRYP_Key0Left = dec_key[0];
ashleymills 0:714293de3836 229 AES_CRYP_KeyInitStructure.CRYP_Key0Right = dec_key[1];
ashleymills 0:714293de3836 230 AES_CRYP_KeyInitStructure.CRYP_Key1Left = dec_key[2];
ashleymills 0:714293de3836 231 AES_CRYP_KeyInitStructure.CRYP_Key1Right = dec_key[3];
ashleymills 0:714293de3836 232 AES_CRYP_KeyInitStructure.CRYP_Key2Left = dec_key[4];
ashleymills 0:714293de3836 233 AES_CRYP_KeyInitStructure.CRYP_Key2Right = dec_key[5];
ashleymills 0:714293de3836 234 AES_CRYP_KeyInitStructure.CRYP_Key3Left = dec_key[6];
ashleymills 0:714293de3836 235 AES_CRYP_KeyInitStructure.CRYP_Key3Right = dec_key[7];
ashleymills 0:714293de3836 236 break;
ashleymills 0:714293de3836 237
ashleymills 0:714293de3836 238 default:
ashleymills 0:714293de3836 239 break;
ashleymills 0:714293de3836 240 }
ashleymills 0:714293de3836 241
ashleymills 0:714293de3836 242 /* set direction, mode, and datatype for key preparation */
ashleymills 0:714293de3836 243 AES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Decrypt;
ashleymills 0:714293de3836 244 AES_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_AES_Key;
ashleymills 0:714293de3836 245 AES_CRYP_InitStructure.CRYP_DataType = CRYP_DataType_32b;
ashleymills 0:714293de3836 246 CRYP_Init(&AES_CRYP_InitStructure);
ashleymills 0:714293de3836 247 CRYP_KeyInit(&AES_CRYP_KeyInitStructure);
ashleymills 0:714293de3836 248
ashleymills 0:714293de3836 249 /* enable crypto processor */
ashleymills 0:714293de3836 250 CRYP_Cmd(ENABLE);
ashleymills 0:714293de3836 251
ashleymills 0:714293de3836 252 /* wait until key has been prepared */
ashleymills 0:714293de3836 253 while(CRYP_GetFlagStatus(CRYP_FLAG_BUSY) != RESET) {}
ashleymills 0:714293de3836 254
ashleymills 0:714293de3836 255 /* set direction, mode, and datatype for decryption */
ashleymills 0:714293de3836 256 AES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Decrypt;
ashleymills 0:714293de3836 257 AES_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_AES_CBC;
ashleymills 0:714293de3836 258 AES_CRYP_InitStructure.CRYP_DataType = CRYP_DataType_8b;
ashleymills 0:714293de3836 259 CRYP_Init(&AES_CRYP_InitStructure);
ashleymills 0:714293de3836 260
ashleymills 0:714293de3836 261 /* set iv */
ashleymills 0:714293de3836 262 ByteReverseWords(iv, iv, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 263
ashleymills 0:714293de3836 264 AES_CRYP_IVInitStructure.CRYP_IV0Left = iv[0];
ashleymills 0:714293de3836 265 AES_CRYP_IVInitStructure.CRYP_IV0Right = iv[1];
ashleymills 0:714293de3836 266 AES_CRYP_IVInitStructure.CRYP_IV1Left = iv[2];
ashleymills 0:714293de3836 267 AES_CRYP_IVInitStructure.CRYP_IV1Right = iv[3];
ashleymills 0:714293de3836 268 CRYP_IVInit(&AES_CRYP_IVInitStructure);
ashleymills 0:714293de3836 269
ashleymills 0:714293de3836 270 /* enable crypto processor */
ashleymills 0:714293de3836 271 CRYP_Cmd(ENABLE);
ashleymills 0:714293de3836 272
ashleymills 0:714293de3836 273 while (sz > 0)
ashleymills 0:714293de3836 274 {
ashleymills 0:714293de3836 275 /* flush IN/OUT FIFOs */
ashleymills 0:714293de3836 276 CRYP_FIFOFlush();
ashleymills 0:714293de3836 277
ashleymills 0:714293de3836 278 CRYP_DataIn(*(uint32_t*)&in[0]);
ashleymills 0:714293de3836 279 CRYP_DataIn(*(uint32_t*)&in[4]);
ashleymills 0:714293de3836 280 CRYP_DataIn(*(uint32_t*)&in[8]);
ashleymills 0:714293de3836 281 CRYP_DataIn(*(uint32_t*)&in[12]);
ashleymills 0:714293de3836 282
ashleymills 0:714293de3836 283 /* wait until the complete message has been processed */
ashleymills 0:714293de3836 284 while(CRYP_GetFlagStatus(CRYP_FLAG_BUSY) != RESET) {}
ashleymills 0:714293de3836 285
ashleymills 0:714293de3836 286 *(uint32_t*)&out[0] = CRYP_DataOut();
ashleymills 0:714293de3836 287 *(uint32_t*)&out[4] = CRYP_DataOut();
ashleymills 0:714293de3836 288 *(uint32_t*)&out[8] = CRYP_DataOut();
ashleymills 0:714293de3836 289 *(uint32_t*)&out[12] = CRYP_DataOut();
ashleymills 0:714293de3836 290
ashleymills 0:714293de3836 291 /* store iv for next call */
ashleymills 0:714293de3836 292 XMEMCPY(aes->reg, aes->tmp, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 293
ashleymills 0:714293de3836 294 sz -= 16;
ashleymills 0:714293de3836 295 in += 16;
ashleymills 0:714293de3836 296 out += 16;
ashleymills 0:714293de3836 297 }
ashleymills 0:714293de3836 298
ashleymills 0:714293de3836 299 /* disable crypto processor */
ashleymills 0:714293de3836 300 CRYP_Cmd(DISABLE);
ashleymills 0:714293de3836 301
ashleymills 0:714293de3836 302 return 0;
ashleymills 0:714293de3836 303 }
ashleymills 0:714293de3836 304
ashleymills 0:714293de3836 305 #ifdef CYASSL_AES_COUNTER
ashleymills 0:714293de3836 306
ashleymills 0:714293de3836 307 /* AES-CTR calls this for key setup */
ashleymills 0:714293de3836 308 int AesSetKeyDirect(Aes* aes, const byte* userKey, word32 keylen,
ashleymills 0:714293de3836 309 const byte* iv, int dir)
ashleymills 0:714293de3836 310 {
ashleymills 0:714293de3836 311 return AesSetKey(aes, userKey, keylen, iv, dir);
ashleymills 0:714293de3836 312 }
ashleymills 0:714293de3836 313
ashleymills 0:714293de3836 314 void AesCtrEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
ashleymills 0:714293de3836 315 {
ashleymills 0:714293de3836 316 word32 *enc_key, *iv;
ashleymills 0:714293de3836 317 CRYP_InitTypeDef AES_CRYP_InitStructure;
ashleymills 0:714293de3836 318 CRYP_KeyInitTypeDef AES_CRYP_KeyInitStructure;
ashleymills 0:714293de3836 319 CRYP_IVInitTypeDef AES_CRYP_IVInitStructure;
ashleymills 0:714293de3836 320
ashleymills 0:714293de3836 321 enc_key = aes->key;
ashleymills 0:714293de3836 322 iv = aes->reg;
ashleymills 0:714293de3836 323
ashleymills 0:714293de3836 324 /* crypto structure initialization */
ashleymills 0:714293de3836 325 CRYP_KeyStructInit(&AES_CRYP_KeyInitStructure);
ashleymills 0:714293de3836 326 CRYP_StructInit(&AES_CRYP_InitStructure);
ashleymills 0:714293de3836 327 CRYP_IVStructInit(&AES_CRYP_IVInitStructure);
ashleymills 0:714293de3836 328
ashleymills 0:714293de3836 329 /* reset registers to their default values */
ashleymills 0:714293de3836 330 CRYP_DeInit();
ashleymills 0:714293de3836 331
ashleymills 0:714293de3836 332 /* load key into correct registers */
ashleymills 0:714293de3836 333 switch(aes->rounds)
ashleymills 0:714293de3836 334 {
ashleymills 0:714293de3836 335 case 10: /* 128-bit key */
ashleymills 0:714293de3836 336 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_128b;
ashleymills 0:714293de3836 337 AES_CRYP_KeyInitStructure.CRYP_Key2Left = enc_key[0];
ashleymills 0:714293de3836 338 AES_CRYP_KeyInitStructure.CRYP_Key2Right = enc_key[1];
ashleymills 0:714293de3836 339 AES_CRYP_KeyInitStructure.CRYP_Key3Left = enc_key[2];
ashleymills 0:714293de3836 340 AES_CRYP_KeyInitStructure.CRYP_Key3Right = enc_key[3];
ashleymills 0:714293de3836 341 break;
ashleymills 0:714293de3836 342
ashleymills 0:714293de3836 343 case 12: /* 192-bit key */
ashleymills 0:714293de3836 344 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_192b;
ashleymills 0:714293de3836 345 AES_CRYP_KeyInitStructure.CRYP_Key1Left = enc_key[0];
ashleymills 0:714293de3836 346 AES_CRYP_KeyInitStructure.CRYP_Key1Right = enc_key[1];
ashleymills 0:714293de3836 347 AES_CRYP_KeyInitStructure.CRYP_Key2Left = enc_key[2];
ashleymills 0:714293de3836 348 AES_CRYP_KeyInitStructure.CRYP_Key2Right = enc_key[3];
ashleymills 0:714293de3836 349 AES_CRYP_KeyInitStructure.CRYP_Key3Left = enc_key[4];
ashleymills 0:714293de3836 350 AES_CRYP_KeyInitStructure.CRYP_Key3Right = enc_key[5];
ashleymills 0:714293de3836 351 break;
ashleymills 0:714293de3836 352
ashleymills 0:714293de3836 353 case 14: /* 256-bit key */
ashleymills 0:714293de3836 354 AES_CRYP_InitStructure.CRYP_KeySize = CRYP_KeySize_256b;
ashleymills 0:714293de3836 355 AES_CRYP_KeyInitStructure.CRYP_Key0Left = enc_key[0];
ashleymills 0:714293de3836 356 AES_CRYP_KeyInitStructure.CRYP_Key0Right = enc_key[1];
ashleymills 0:714293de3836 357 AES_CRYP_KeyInitStructure.CRYP_Key1Left = enc_key[2];
ashleymills 0:714293de3836 358 AES_CRYP_KeyInitStructure.CRYP_Key1Right = enc_key[3];
ashleymills 0:714293de3836 359 AES_CRYP_KeyInitStructure.CRYP_Key2Left = enc_key[4];
ashleymills 0:714293de3836 360 AES_CRYP_KeyInitStructure.CRYP_Key2Right = enc_key[5];
ashleymills 0:714293de3836 361 AES_CRYP_KeyInitStructure.CRYP_Key3Left = enc_key[6];
ashleymills 0:714293de3836 362 AES_CRYP_KeyInitStructure.CRYP_Key3Right = enc_key[7];
ashleymills 0:714293de3836 363 break;
ashleymills 0:714293de3836 364
ashleymills 0:714293de3836 365 default:
ashleymills 0:714293de3836 366 break;
ashleymills 0:714293de3836 367 }
ashleymills 0:714293de3836 368 CRYP_KeyInit(&AES_CRYP_KeyInitStructure);
ashleymills 0:714293de3836 369
ashleymills 0:714293de3836 370 /* set iv */
ashleymills 0:714293de3836 371 ByteReverseWords(iv, iv, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 372 AES_CRYP_IVInitStructure.CRYP_IV0Left = iv[0];
ashleymills 0:714293de3836 373 AES_CRYP_IVInitStructure.CRYP_IV0Right = iv[1];
ashleymills 0:714293de3836 374 AES_CRYP_IVInitStructure.CRYP_IV1Left = iv[2];
ashleymills 0:714293de3836 375 AES_CRYP_IVInitStructure.CRYP_IV1Right = iv[3];
ashleymills 0:714293de3836 376 CRYP_IVInit(&AES_CRYP_IVInitStructure);
ashleymills 0:714293de3836 377
ashleymills 0:714293de3836 378 /* set direction, mode, and datatype */
ashleymills 0:714293de3836 379 AES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Encrypt;
ashleymills 0:714293de3836 380 AES_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_AES_CTR;
ashleymills 0:714293de3836 381 AES_CRYP_InitStructure.CRYP_DataType = CRYP_DataType_8b;
ashleymills 0:714293de3836 382 CRYP_Init(&AES_CRYP_InitStructure);
ashleymills 0:714293de3836 383
ashleymills 0:714293de3836 384 /* enable crypto processor */
ashleymills 0:714293de3836 385 CRYP_Cmd(ENABLE);
ashleymills 0:714293de3836 386
ashleymills 0:714293de3836 387 while (sz > 0)
ashleymills 0:714293de3836 388 {
ashleymills 0:714293de3836 389 /* flush IN/OUT FIFOs */
ashleymills 0:714293de3836 390 CRYP_FIFOFlush();
ashleymills 0:714293de3836 391
ashleymills 0:714293de3836 392 CRYP_DataIn(*(uint32_t*)&in[0]);
ashleymills 0:714293de3836 393 CRYP_DataIn(*(uint32_t*)&in[4]);
ashleymills 0:714293de3836 394 CRYP_DataIn(*(uint32_t*)&in[8]);
ashleymills 0:714293de3836 395 CRYP_DataIn(*(uint32_t*)&in[12]);
ashleymills 0:714293de3836 396
ashleymills 0:714293de3836 397 /* wait until the complete message has been processed */
ashleymills 0:714293de3836 398 while(CRYP_GetFlagStatus(CRYP_FLAG_BUSY) != RESET) {}
ashleymills 0:714293de3836 399
ashleymills 0:714293de3836 400 *(uint32_t*)&out[0] = CRYP_DataOut();
ashleymills 0:714293de3836 401 *(uint32_t*)&out[4] = CRYP_DataOut();
ashleymills 0:714293de3836 402 *(uint32_t*)&out[8] = CRYP_DataOut();
ashleymills 0:714293de3836 403 *(uint32_t*)&out[12] = CRYP_DataOut();
ashleymills 0:714293de3836 404
ashleymills 0:714293de3836 405 /* store iv for next call */
ashleymills 0:714293de3836 406 XMEMCPY(aes->reg, out + sz - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 407
ashleymills 0:714293de3836 408 sz -= 16;
ashleymills 0:714293de3836 409 in += 16;
ashleymills 0:714293de3836 410 out += 16;
ashleymills 0:714293de3836 411 }
ashleymills 0:714293de3836 412
ashleymills 0:714293de3836 413 /* disable crypto processor */
ashleymills 0:714293de3836 414 CRYP_Cmd(DISABLE);
ashleymills 0:714293de3836 415 }
ashleymills 0:714293de3836 416
ashleymills 0:714293de3836 417 #endif /* CYASSL_AES_COUNTER */
ashleymills 0:714293de3836 418
ashleymills 0:714293de3836 419 #else /* CTaoCrypt software implementation */
ashleymills 0:714293de3836 420
ashleymills 0:714293de3836 421 static const word32 rcon[] = {
ashleymills 0:714293de3836 422 0x01000000, 0x02000000, 0x04000000, 0x08000000,
ashleymills 0:714293de3836 423 0x10000000, 0x20000000, 0x40000000, 0x80000000,
ashleymills 0:714293de3836 424 0x1B000000, 0x36000000,
ashleymills 0:714293de3836 425 /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
ashleymills 0:714293de3836 426 };
ashleymills 0:714293de3836 427
ashleymills 0:714293de3836 428
ashleymills 0:714293de3836 429 static const word32 Te[5][256] = {
ashleymills 0:714293de3836 430 {
ashleymills 0:714293de3836 431 0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU,
ashleymills 0:714293de3836 432 0xfff2f20dU, 0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U,
ashleymills 0:714293de3836 433 0x60303050U, 0x02010103U, 0xce6767a9U, 0x562b2b7dU,
ashleymills 0:714293de3836 434 0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U, 0xec76769aU,
ashleymills 0:714293de3836 435 0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U,
ashleymills 0:714293de3836 436 0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU,
ashleymills 0:714293de3836 437 0x41adadecU, 0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU,
ashleymills 0:714293de3836 438 0x239c9cbfU, 0x53a4a4f7U, 0xe4727296U, 0x9bc0c05bU,
ashleymills 0:714293de3836 439 0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU, 0x4c26266aU,
ashleymills 0:714293de3836 440 0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU,
ashleymills 0:714293de3836 441 0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U,
ashleymills 0:714293de3836 442 0xe2717193U, 0xabd8d873U, 0x62313153U, 0x2a15153fU,
ashleymills 0:714293de3836 443 0x0804040cU, 0x95c7c752U, 0x46232365U, 0x9dc3c35eU,
ashleymills 0:714293de3836 444 0x30181828U, 0x379696a1U, 0x0a05050fU, 0x2f9a9ab5U,
ashleymills 0:714293de3836 445 0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU,
ashleymills 0:714293de3836 446 0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU,
ashleymills 0:714293de3836 447 0x1209091bU, 0x1d83839eU, 0x582c2c74U, 0x341a1a2eU,
ashleymills 0:714293de3836 448 0x361b1b2dU, 0xdc6e6eb2U, 0xb45a5aeeU, 0x5ba0a0fbU,
ashleymills 0:714293de3836 449 0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U, 0x7db3b3ceU,
ashleymills 0:714293de3836 450 0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U,
ashleymills 0:714293de3836 451 0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU,
ashleymills 0:714293de3836 452 0x40202060U, 0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU,
ashleymills 0:714293de3836 453 0xd46a6abeU, 0x8dcbcb46U, 0x67bebed9U, 0x7239394bU,
ashleymills 0:714293de3836 454 0x944a4adeU, 0x984c4cd4U, 0xb05858e8U, 0x85cfcf4aU,
ashleymills 0:714293de3836 455 0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U,
ashleymills 0:714293de3836 456 0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U,
ashleymills 0:714293de3836 457 0x8a4545cfU, 0xe9f9f910U, 0x04020206U, 0xfe7f7f81U,
ashleymills 0:714293de3836 458 0xa05050f0U, 0x783c3c44U, 0x259f9fbaU, 0x4ba8a8e3U,
ashleymills 0:714293de3836 459 0xa25151f3U, 0x5da3a3feU, 0x804040c0U, 0x058f8f8aU,
ashleymills 0:714293de3836 460 0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U,
ashleymills 0:714293de3836 461 0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U,
ashleymills 0:714293de3836 462 0x20101030U, 0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU,
ashleymills 0:714293de3836 463 0x81cdcd4cU, 0x180c0c14U, 0x26131335U, 0xc3ecec2fU,
ashleymills 0:714293de3836 464 0xbe5f5fe1U, 0x359797a2U, 0x884444ccU, 0x2e171739U,
ashleymills 0:714293de3836 465 0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U,
ashleymills 0:714293de3836 466 0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U,
ashleymills 0:714293de3836 467 0xc06060a0U, 0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU,
ashleymills 0:714293de3836 468 0x44222266U, 0x542a2a7eU, 0x3b9090abU, 0x0b888883U,
ashleymills 0:714293de3836 469 0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U, 0x2814143cU,
ashleymills 0:714293de3836 470 0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U,
ashleymills 0:714293de3836 471 0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU,
ashleymills 0:714293de3836 472 0x924949dbU, 0x0c06060aU, 0x4824246cU, 0xb85c5ce4U,
ashleymills 0:714293de3836 473 0x9fc2c25dU, 0xbdd3d36eU, 0x43acacefU, 0xc46262a6U,
ashleymills 0:714293de3836 474 0x399191a8U, 0x319595a4U, 0xd3e4e437U, 0xf279798bU,
ashleymills 0:714293de3836 475 0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U,
ashleymills 0:714293de3836 476 0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U,
ashleymills 0:714293de3836 477 0xd86c6cb4U, 0xac5656faU, 0xf3f4f407U, 0xcfeaea25U,
ashleymills 0:714293de3836 478 0xca6565afU, 0xf47a7a8eU, 0x47aeaee9U, 0x10080818U,
ashleymills 0:714293de3836 479 0x6fbabad5U, 0xf0787888U, 0x4a25256fU, 0x5c2e2e72U,
ashleymills 0:714293de3836 480 0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U,
ashleymills 0:714293de3836 481 0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U,
ashleymills 0:714293de3836 482 0x964b4bddU, 0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U,
ashleymills 0:714293de3836 483 0xe0707090U, 0x7c3e3e42U, 0x71b5b5c4U, 0xcc6666aaU,
ashleymills 0:714293de3836 484 0x904848d8U, 0x06030305U, 0xf7f6f601U, 0x1c0e0e12U,
ashleymills 0:714293de3836 485 0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U,
ashleymills 0:714293de3836 486 0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U,
ashleymills 0:714293de3836 487 0xd9e1e138U, 0xebf8f813U, 0x2b9898b3U, 0x22111133U,
ashleymills 0:714293de3836 488 0xd26969bbU, 0xa9d9d970U, 0x078e8e89U, 0x339494a7U,
ashleymills 0:714293de3836 489 0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U, 0xc9e9e920U,
ashleymills 0:714293de3836 490 0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU,
ashleymills 0:714293de3836 491 0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U,
ashleymills 0:714293de3836 492 0x65bfbfdaU, 0xd7e6e631U, 0x844242c6U, 0xd06868b8U,
ashleymills 0:714293de3836 493 0x824141c3U, 0x299999b0U, 0x5a2d2d77U, 0x1e0f0f11U,
ashleymills 0:714293de3836 494 0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U, 0x2c16163aU,
ashleymills 0:714293de3836 495 },
ashleymills 0:714293de3836 496 {
ashleymills 0:714293de3836 497 0xa5c66363U, 0x84f87c7cU, 0x99ee7777U, 0x8df67b7bU,
ashleymills 0:714293de3836 498 0x0dfff2f2U, 0xbdd66b6bU, 0xb1de6f6fU, 0x5491c5c5U,
ashleymills 0:714293de3836 499 0x50603030U, 0x03020101U, 0xa9ce6767U, 0x7d562b2bU,
ashleymills 0:714293de3836 500 0x19e7fefeU, 0x62b5d7d7U, 0xe64dababU, 0x9aec7676U,
ashleymills 0:714293de3836 501 0x458fcacaU, 0x9d1f8282U, 0x4089c9c9U, 0x87fa7d7dU,
ashleymills 0:714293de3836 502 0x15effafaU, 0xebb25959U, 0xc98e4747U, 0x0bfbf0f0U,
ashleymills 0:714293de3836 503 0xec41adadU, 0x67b3d4d4U, 0xfd5fa2a2U, 0xea45afafU,
ashleymills 0:714293de3836 504 0xbf239c9cU, 0xf753a4a4U, 0x96e47272U, 0x5b9bc0c0U,
ashleymills 0:714293de3836 505 0xc275b7b7U, 0x1ce1fdfdU, 0xae3d9393U, 0x6a4c2626U,
ashleymills 0:714293de3836 506 0x5a6c3636U, 0x417e3f3fU, 0x02f5f7f7U, 0x4f83ccccU,
ashleymills 0:714293de3836 507 0x5c683434U, 0xf451a5a5U, 0x34d1e5e5U, 0x08f9f1f1U,
ashleymills 0:714293de3836 508 0x93e27171U, 0x73abd8d8U, 0x53623131U, 0x3f2a1515U,
ashleymills 0:714293de3836 509 0x0c080404U, 0x5295c7c7U, 0x65462323U, 0x5e9dc3c3U,
ashleymills 0:714293de3836 510 0x28301818U, 0xa1379696U, 0x0f0a0505U, 0xb52f9a9aU,
ashleymills 0:714293de3836 511 0x090e0707U, 0x36241212U, 0x9b1b8080U, 0x3ddfe2e2U,
ashleymills 0:714293de3836 512 0x26cdebebU, 0x694e2727U, 0xcd7fb2b2U, 0x9fea7575U,
ashleymills 0:714293de3836 513 0x1b120909U, 0x9e1d8383U, 0x74582c2cU, 0x2e341a1aU,
ashleymills 0:714293de3836 514 0x2d361b1bU, 0xb2dc6e6eU, 0xeeb45a5aU, 0xfb5ba0a0U,
ashleymills 0:714293de3836 515 0xf6a45252U, 0x4d763b3bU, 0x61b7d6d6U, 0xce7db3b3U,
ashleymills 0:714293de3836 516 0x7b522929U, 0x3edde3e3U, 0x715e2f2fU, 0x97138484U,
ashleymills 0:714293de3836 517 0xf5a65353U, 0x68b9d1d1U, 0x00000000U, 0x2cc1ededU,
ashleymills 0:714293de3836 518 0x60402020U, 0x1fe3fcfcU, 0xc879b1b1U, 0xedb65b5bU,
ashleymills 0:714293de3836 519 0xbed46a6aU, 0x468dcbcbU, 0xd967bebeU, 0x4b723939U,
ashleymills 0:714293de3836 520 0xde944a4aU, 0xd4984c4cU, 0xe8b05858U, 0x4a85cfcfU,
ashleymills 0:714293de3836 521 0x6bbbd0d0U, 0x2ac5efefU, 0xe54faaaaU, 0x16edfbfbU,
ashleymills 0:714293de3836 522 0xc5864343U, 0xd79a4d4dU, 0x55663333U, 0x94118585U,
ashleymills 0:714293de3836 523 0xcf8a4545U, 0x10e9f9f9U, 0x06040202U, 0x81fe7f7fU,
ashleymills 0:714293de3836 524 0xf0a05050U, 0x44783c3cU, 0xba259f9fU, 0xe34ba8a8U,
ashleymills 0:714293de3836 525 0xf3a25151U, 0xfe5da3a3U, 0xc0804040U, 0x8a058f8fU,
ashleymills 0:714293de3836 526 0xad3f9292U, 0xbc219d9dU, 0x48703838U, 0x04f1f5f5U,
ashleymills 0:714293de3836 527 0xdf63bcbcU, 0xc177b6b6U, 0x75afdadaU, 0x63422121U,
ashleymills 0:714293de3836 528 0x30201010U, 0x1ae5ffffU, 0x0efdf3f3U, 0x6dbfd2d2U,
ashleymills 0:714293de3836 529 0x4c81cdcdU, 0x14180c0cU, 0x35261313U, 0x2fc3ececU,
ashleymills 0:714293de3836 530 0xe1be5f5fU, 0xa2359797U, 0xcc884444U, 0x392e1717U,
ashleymills 0:714293de3836 531 0x5793c4c4U, 0xf255a7a7U, 0x82fc7e7eU, 0x477a3d3dU,
ashleymills 0:714293de3836 532 0xacc86464U, 0xe7ba5d5dU, 0x2b321919U, 0x95e67373U,
ashleymills 0:714293de3836 533 0xa0c06060U, 0x98198181U, 0xd19e4f4fU, 0x7fa3dcdcU,
ashleymills 0:714293de3836 534 0x66442222U, 0x7e542a2aU, 0xab3b9090U, 0x830b8888U,
ashleymills 0:714293de3836 535 0xca8c4646U, 0x29c7eeeeU, 0xd36bb8b8U, 0x3c281414U,
ashleymills 0:714293de3836 536 0x79a7dedeU, 0xe2bc5e5eU, 0x1d160b0bU, 0x76addbdbU,
ashleymills 0:714293de3836 537 0x3bdbe0e0U, 0x56643232U, 0x4e743a3aU, 0x1e140a0aU,
ashleymills 0:714293de3836 538 0xdb924949U, 0x0a0c0606U, 0x6c482424U, 0xe4b85c5cU,
ashleymills 0:714293de3836 539 0x5d9fc2c2U, 0x6ebdd3d3U, 0xef43acacU, 0xa6c46262U,
ashleymills 0:714293de3836 540 0xa8399191U, 0xa4319595U, 0x37d3e4e4U, 0x8bf27979U,
ashleymills 0:714293de3836 541 0x32d5e7e7U, 0x438bc8c8U, 0x596e3737U, 0xb7da6d6dU,
ashleymills 0:714293de3836 542 0x8c018d8dU, 0x64b1d5d5U, 0xd29c4e4eU, 0xe049a9a9U,
ashleymills 0:714293de3836 543 0xb4d86c6cU, 0xfaac5656U, 0x07f3f4f4U, 0x25cfeaeaU,
ashleymills 0:714293de3836 544 0xafca6565U, 0x8ef47a7aU, 0xe947aeaeU, 0x18100808U,
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ashleymills 0:714293de3836 710 0xebebebebU, 0x27272727U, 0xb2b2b2b2U, 0x75757575U,
ashleymills 0:714293de3836 711 0x09090909U, 0x83838383U, 0x2c2c2c2cU, 0x1a1a1a1aU,
ashleymills 0:714293de3836 712 0x1b1b1b1bU, 0x6e6e6e6eU, 0x5a5a5a5aU, 0xa0a0a0a0U,
ashleymills 0:714293de3836 713 0x52525252U, 0x3b3b3b3bU, 0xd6d6d6d6U, 0xb3b3b3b3U,
ashleymills 0:714293de3836 714 0x29292929U, 0xe3e3e3e3U, 0x2f2f2f2fU, 0x84848484U,
ashleymills 0:714293de3836 715 0x53535353U, 0xd1d1d1d1U, 0x00000000U, 0xededededU,
ashleymills 0:714293de3836 716 0x20202020U, 0xfcfcfcfcU, 0xb1b1b1b1U, 0x5b5b5b5bU,
ashleymills 0:714293de3836 717 0x6a6a6a6aU, 0xcbcbcbcbU, 0xbebebebeU, 0x39393939U,
ashleymills 0:714293de3836 718 0x4a4a4a4aU, 0x4c4c4c4cU, 0x58585858U, 0xcfcfcfcfU,
ashleymills 0:714293de3836 719 0xd0d0d0d0U, 0xefefefefU, 0xaaaaaaaaU, 0xfbfbfbfbU,
ashleymills 0:714293de3836 720 0x43434343U, 0x4d4d4d4dU, 0x33333333U, 0x85858585U,
ashleymills 0:714293de3836 721 0x45454545U, 0xf9f9f9f9U, 0x02020202U, 0x7f7f7f7fU,
ashleymills 0:714293de3836 722 0x50505050U, 0x3c3c3c3cU, 0x9f9f9f9fU, 0xa8a8a8a8U,
ashleymills 0:714293de3836 723 0x51515151U, 0xa3a3a3a3U, 0x40404040U, 0x8f8f8f8fU,
ashleymills 0:714293de3836 724 0x92929292U, 0x9d9d9d9dU, 0x38383838U, 0xf5f5f5f5U,
ashleymills 0:714293de3836 725 0xbcbcbcbcU, 0xb6b6b6b6U, 0xdadadadaU, 0x21212121U,
ashleymills 0:714293de3836 726 0x10101010U, 0xffffffffU, 0xf3f3f3f3U, 0xd2d2d2d2U,
ashleymills 0:714293de3836 727 0xcdcdcdcdU, 0x0c0c0c0cU, 0x13131313U, 0xececececU,
ashleymills 0:714293de3836 728 0x5f5f5f5fU, 0x97979797U, 0x44444444U, 0x17171717U,
ashleymills 0:714293de3836 729 0xc4c4c4c4U, 0xa7a7a7a7U, 0x7e7e7e7eU, 0x3d3d3d3dU,
ashleymills 0:714293de3836 730 0x64646464U, 0x5d5d5d5dU, 0x19191919U, 0x73737373U,
ashleymills 0:714293de3836 731 0x60606060U, 0x81818181U, 0x4f4f4f4fU, 0xdcdcdcdcU,
ashleymills 0:714293de3836 732 0x22222222U, 0x2a2a2a2aU, 0x90909090U, 0x88888888U,
ashleymills 0:714293de3836 733 0x46464646U, 0xeeeeeeeeU, 0xb8b8b8b8U, 0x14141414U,
ashleymills 0:714293de3836 734 0xdedededeU, 0x5e5e5e5eU, 0x0b0b0b0bU, 0xdbdbdbdbU,
ashleymills 0:714293de3836 735 0xe0e0e0e0U, 0x32323232U, 0x3a3a3a3aU, 0x0a0a0a0aU,
ashleymills 0:714293de3836 736 0x49494949U, 0x06060606U, 0x24242424U, 0x5c5c5c5cU,
ashleymills 0:714293de3836 737 0xc2c2c2c2U, 0xd3d3d3d3U, 0xacacacacU, 0x62626262U,
ashleymills 0:714293de3836 738 0x91919191U, 0x95959595U, 0xe4e4e4e4U, 0x79797979U,
ashleymills 0:714293de3836 739 0xe7e7e7e7U, 0xc8c8c8c8U, 0x37373737U, 0x6d6d6d6dU,
ashleymills 0:714293de3836 740 0x8d8d8d8dU, 0xd5d5d5d5U, 0x4e4e4e4eU, 0xa9a9a9a9U,
ashleymills 0:714293de3836 741 0x6c6c6c6cU, 0x56565656U, 0xf4f4f4f4U, 0xeaeaeaeaU,
ashleymills 0:714293de3836 742 0x65656565U, 0x7a7a7a7aU, 0xaeaeaeaeU, 0x08080808U,
ashleymills 0:714293de3836 743 0xbabababaU, 0x78787878U, 0x25252525U, 0x2e2e2e2eU,
ashleymills 0:714293de3836 744 0x1c1c1c1cU, 0xa6a6a6a6U, 0xb4b4b4b4U, 0xc6c6c6c6U,
ashleymills 0:714293de3836 745 0xe8e8e8e8U, 0xddddddddU, 0x74747474U, 0x1f1f1f1fU,
ashleymills 0:714293de3836 746 0x4b4b4b4bU, 0xbdbdbdbdU, 0x8b8b8b8bU, 0x8a8a8a8aU,
ashleymills 0:714293de3836 747 0x70707070U, 0x3e3e3e3eU, 0xb5b5b5b5U, 0x66666666U,
ashleymills 0:714293de3836 748 0x48484848U, 0x03030303U, 0xf6f6f6f6U, 0x0e0e0e0eU,
ashleymills 0:714293de3836 749 0x61616161U, 0x35353535U, 0x57575757U, 0xb9b9b9b9U,
ashleymills 0:714293de3836 750 0x86868686U, 0xc1c1c1c1U, 0x1d1d1d1dU, 0x9e9e9e9eU,
ashleymills 0:714293de3836 751 0xe1e1e1e1U, 0xf8f8f8f8U, 0x98989898U, 0x11111111U,
ashleymills 0:714293de3836 752 0x69696969U, 0xd9d9d9d9U, 0x8e8e8e8eU, 0x94949494U,
ashleymills 0:714293de3836 753 0x9b9b9b9bU, 0x1e1e1e1eU, 0x87878787U, 0xe9e9e9e9U,
ashleymills 0:714293de3836 754 0xcecececeU, 0x55555555U, 0x28282828U, 0xdfdfdfdfU,
ashleymills 0:714293de3836 755 0x8c8c8c8cU, 0xa1a1a1a1U, 0x89898989U, 0x0d0d0d0dU,
ashleymills 0:714293de3836 756 0xbfbfbfbfU, 0xe6e6e6e6U, 0x42424242U, 0x68686868U,
ashleymills 0:714293de3836 757 0x41414141U, 0x99999999U, 0x2d2d2d2dU, 0x0f0f0f0fU,
ashleymills 0:714293de3836 758 0xb0b0b0b0U, 0x54545454U, 0xbbbbbbbbU, 0x16161616U,
ashleymills 0:714293de3836 759 }
ashleymills 0:714293de3836 760 };
ashleymills 0:714293de3836 761
ashleymills 0:714293de3836 762
ashleymills 0:714293de3836 763 static const word32 Td[5][256] = {
ashleymills 0:714293de3836 764 {
ashleymills 0:714293de3836 765 0x51f4a750U, 0x7e416553U, 0x1a17a4c3U, 0x3a275e96U,
ashleymills 0:714293de3836 766 0x3bab6bcbU, 0x1f9d45f1U, 0xacfa58abU, 0x4be30393U,
ashleymills 0:714293de3836 767 0x2030fa55U, 0xad766df6U, 0x88cc7691U, 0xf5024c25U,
ashleymills 0:714293de3836 768 0x4fe5d7fcU, 0xc52acbd7U, 0x26354480U, 0xb562a38fU,
ashleymills 0:714293de3836 769 0xdeb15a49U, 0x25ba1b67U, 0x45ea0e98U, 0x5dfec0e1U,
ashleymills 0:714293de3836 770 0xc32f7502U, 0x814cf012U, 0x8d4697a3U, 0x6bd3f9c6U,
ashleymills 0:714293de3836 771 0x038f5fe7U, 0x15929c95U, 0xbf6d7aebU, 0x955259daU,
ashleymills 0:714293de3836 772 0xd4be832dU, 0x587421d3U, 0x49e06929U, 0x8ec9c844U,
ashleymills 0:714293de3836 773 0x75c2896aU, 0xf48e7978U, 0x99583e6bU, 0x27b971ddU,
ashleymills 0:714293de3836 774 0xbee14fb6U, 0xf088ad17U, 0xc920ac66U, 0x7dce3ab4U,
ashleymills 0:714293de3836 775 0x63df4a18U, 0xe51a3182U, 0x97513360U, 0x62537f45U,
ashleymills 0:714293de3836 776 0xb16477e0U, 0xbb6bae84U, 0xfe81a01cU, 0xf9082b94U,
ashleymills 0:714293de3836 777 0x70486858U, 0x8f45fd19U, 0x94de6c87U, 0x527bf8b7U,
ashleymills 0:714293de3836 778 0xab73d323U, 0x724b02e2U, 0xe31f8f57U, 0x6655ab2aU,
ashleymills 0:714293de3836 779 0xb2eb2807U, 0x2fb5c203U, 0x86c57b9aU, 0xd33708a5U,
ashleymills 0:714293de3836 780 0x302887f2U, 0x23bfa5b2U, 0x02036abaU, 0xed16825cU,
ashleymills 0:714293de3836 781 0x8acf1c2bU, 0xa779b492U, 0xf307f2f0U, 0x4e69e2a1U,
ashleymills 0:714293de3836 782 0x65daf4cdU, 0x0605bed5U, 0xd134621fU, 0xc4a6fe8aU,
ashleymills 0:714293de3836 783 0x342e539dU, 0xa2f355a0U, 0x058ae132U, 0xa4f6eb75U,
ashleymills 0:714293de3836 784 0x0b83ec39U, 0x4060efaaU, 0x5e719f06U, 0xbd6e1051U,
ashleymills 0:714293de3836 785 0x3e218af9U, 0x96dd063dU, 0xdd3e05aeU, 0x4de6bd46U,
ashleymills 0:714293de3836 786 0x91548db5U, 0x71c45d05U, 0x0406d46fU, 0x605015ffU,
ashleymills 0:714293de3836 787 0x1998fb24U, 0xd6bde997U, 0x894043ccU, 0x67d99e77U,
ashleymills 0:714293de3836 788 0xb0e842bdU, 0x07898b88U, 0xe7195b38U, 0x79c8eedbU,
ashleymills 0:714293de3836 789 0xa17c0a47U, 0x7c420fe9U, 0xf8841ec9U, 0x00000000U,
ashleymills 0:714293de3836 790 0x09808683U, 0x322bed48U, 0x1e1170acU, 0x6c5a724eU,
ashleymills 0:714293de3836 791 0xfd0efffbU, 0x0f853856U, 0x3daed51eU, 0x362d3927U,
ashleymills 0:714293de3836 792 0x0a0fd964U, 0x685ca621U, 0x9b5b54d1U, 0x24362e3aU,
ashleymills 0:714293de3836 793 0x0c0a67b1U, 0x9357e70fU, 0xb4ee96d2U, 0x1b9b919eU,
ashleymills 0:714293de3836 794 0x80c0c54fU, 0x61dc20a2U, 0x5a774b69U, 0x1c121a16U,
ashleymills 0:714293de3836 795 0xe293ba0aU, 0xc0a02ae5U, 0x3c22e043U, 0x121b171dU,
ashleymills 0:714293de3836 796 0x0e090d0bU, 0xf28bc7adU, 0x2db6a8b9U, 0x141ea9c8U,
ashleymills 0:714293de3836 797 0x57f11985U, 0xaf75074cU, 0xee99ddbbU, 0xa37f60fdU,
ashleymills 0:714293de3836 798 0xf701269fU, 0x5c72f5bcU, 0x44663bc5U, 0x5bfb7e34U,
ashleymills 0:714293de3836 799 0x8b432976U, 0xcb23c6dcU, 0xb6edfc68U, 0xb8e4f163U,
ashleymills 0:714293de3836 800 0xd731dccaU, 0x42638510U, 0x13972240U, 0x84c61120U,
ashleymills 0:714293de3836 801 0x854a247dU, 0xd2bb3df8U, 0xaef93211U, 0xc729a16dU,
ashleymills 0:714293de3836 802 0x1d9e2f4bU, 0xdcb230f3U, 0x0d8652ecU, 0x77c1e3d0U,
ashleymills 0:714293de3836 803 0x2bb3166cU, 0xa970b999U, 0x119448faU, 0x47e96422U,
ashleymills 0:714293de3836 804 0xa8fc8cc4U, 0xa0f03f1aU, 0x567d2cd8U, 0x223390efU,
ashleymills 0:714293de3836 805 0x87494ec7U, 0xd938d1c1U, 0x8ccaa2feU, 0x98d40b36U,
ashleymills 0:714293de3836 806 0xa6f581cfU, 0xa57ade28U, 0xdab78e26U, 0x3fadbfa4U,
ashleymills 0:714293de3836 807 0x2c3a9de4U, 0x5078920dU, 0x6a5fcc9bU, 0x547e4662U,
ashleymills 0:714293de3836 808 0xf68d13c2U, 0x90d8b8e8U, 0x2e39f75eU, 0x82c3aff5U,
ashleymills 0:714293de3836 809 0x9f5d80beU, 0x69d0937cU, 0x6fd52da9U, 0xcf2512b3U,
ashleymills 0:714293de3836 810 0xc8ac993bU, 0x10187da7U, 0xe89c636eU, 0xdb3bbb7bU,
ashleymills 0:714293de3836 811 0xcd267809U, 0x6e5918f4U, 0xec9ab701U, 0x834f9aa8U,
ashleymills 0:714293de3836 812 0xe6956e65U, 0xaaffe67eU, 0x21bccf08U, 0xef15e8e6U,
ashleymills 0:714293de3836 813 0xbae79bd9U, 0x4a6f36ceU, 0xea9f09d4U, 0x29b07cd6U,
ashleymills 0:714293de3836 814 0x31a4b2afU, 0x2a3f2331U, 0xc6a59430U, 0x35a266c0U,
ashleymills 0:714293de3836 815 0x744ebc37U, 0xfc82caa6U, 0xe090d0b0U, 0x33a7d815U,
ashleymills 0:714293de3836 816 0xf104984aU, 0x41ecdaf7U, 0x7fcd500eU, 0x1791f62fU,
ashleymills 0:714293de3836 817 0x764dd68dU, 0x43efb04dU, 0xccaa4d54U, 0xe49604dfU,
ashleymills 0:714293de3836 818 0x9ed1b5e3U, 0x4c6a881bU, 0xc12c1fb8U, 0x4665517fU,
ashleymills 0:714293de3836 819 0x9d5eea04U, 0x018c355dU, 0xfa877473U, 0xfb0b412eU,
ashleymills 0:714293de3836 820 0xb3671d5aU, 0x92dbd252U, 0xe9105633U, 0x6dd64713U,
ashleymills 0:714293de3836 821 0x9ad7618cU, 0x37a10c7aU, 0x59f8148eU, 0xeb133c89U,
ashleymills 0:714293de3836 822 0xcea927eeU, 0xb761c935U, 0xe11ce5edU, 0x7a47b13cU,
ashleymills 0:714293de3836 823 0x9cd2df59U, 0x55f2733fU, 0x1814ce79U, 0x73c737bfU,
ashleymills 0:714293de3836 824 0x53f7cdeaU, 0x5ffdaa5bU, 0xdf3d6f14U, 0x7844db86U,
ashleymills 0:714293de3836 825 0xcaaff381U, 0xb968c43eU, 0x3824342cU, 0xc2a3405fU,
ashleymills 0:714293de3836 826 0x161dc372U, 0xbce2250cU, 0x283c498bU, 0xff0d9541U,
ashleymills 0:714293de3836 827 0x39a80171U, 0x080cb3deU, 0xd8b4e49cU, 0x6456c190U,
ashleymills 0:714293de3836 828 0x7bcb8461U, 0xd532b670U, 0x486c5c74U, 0xd0b85742U,
ashleymills 0:714293de3836 829 },
ashleymills 0:714293de3836 830 {
ashleymills 0:714293de3836 831 0x5051f4a7U, 0x537e4165U, 0xc31a17a4U, 0x963a275eU,
ashleymills 0:714293de3836 832 0xcb3bab6bU, 0xf11f9d45U, 0xabacfa58U, 0x934be303U,
ashleymills 0:714293de3836 833 0x552030faU, 0xf6ad766dU, 0x9188cc76U, 0x25f5024cU,
ashleymills 0:714293de3836 834 0xfc4fe5d7U, 0xd7c52acbU, 0x80263544U, 0x8fb562a3U,
ashleymills 0:714293de3836 835 0x49deb15aU, 0x6725ba1bU, 0x9845ea0eU, 0xe15dfec0U,
ashleymills 0:714293de3836 836 0x02c32f75U, 0x12814cf0U, 0xa38d4697U, 0xc66bd3f9U,
ashleymills 0:714293de3836 837 0xe7038f5fU, 0x9515929cU, 0xebbf6d7aU, 0xda955259U,
ashleymills 0:714293de3836 838 0x2dd4be83U, 0xd3587421U, 0x2949e069U, 0x448ec9c8U,
ashleymills 0:714293de3836 839 0x6a75c289U, 0x78f48e79U, 0x6b99583eU, 0xdd27b971U,
ashleymills 0:714293de3836 840 0xb6bee14fU, 0x17f088adU, 0x66c920acU, 0xb47dce3aU,
ashleymills 0:714293de3836 841 0x1863df4aU, 0x82e51a31U, 0x60975133U, 0x4562537fU,
ashleymills 0:714293de3836 842 0xe0b16477U, 0x84bb6baeU, 0x1cfe81a0U, 0x94f9082bU,
ashleymills 0:714293de3836 843 0x58704868U, 0x198f45fdU, 0x8794de6cU, 0xb7527bf8U,
ashleymills 0:714293de3836 844 0x23ab73d3U, 0xe2724b02U, 0x57e31f8fU, 0x2a6655abU,
ashleymills 0:714293de3836 845 0x07b2eb28U, 0x032fb5c2U, 0x9a86c57bU, 0xa5d33708U,
ashleymills 0:714293de3836 846 0xf2302887U, 0xb223bfa5U, 0xba02036aU, 0x5ced1682U,
ashleymills 0:714293de3836 847 0x2b8acf1cU, 0x92a779b4U, 0xf0f307f2U, 0xa14e69e2U,
ashleymills 0:714293de3836 848 0xcd65daf4U, 0xd50605beU, 0x1fd13462U, 0x8ac4a6feU,
ashleymills 0:714293de3836 849 0x9d342e53U, 0xa0a2f355U, 0x32058ae1U, 0x75a4f6ebU,
ashleymills 0:714293de3836 850 0x390b83ecU, 0xaa4060efU, 0x065e719fU, 0x51bd6e10U,
ashleymills 0:714293de3836 851 0xf93e218aU, 0x3d96dd06U, 0xaedd3e05U, 0x464de6bdU,
ashleymills 0:714293de3836 852 0xb591548dU, 0x0571c45dU, 0x6f0406d4U, 0xff605015U,
ashleymills 0:714293de3836 853 0x241998fbU, 0x97d6bde9U, 0xcc894043U, 0x7767d99eU,
ashleymills 0:714293de3836 854 0xbdb0e842U, 0x8807898bU, 0x38e7195bU, 0xdb79c8eeU,
ashleymills 0:714293de3836 855 0x47a17c0aU, 0xe97c420fU, 0xc9f8841eU, 0x00000000U,
ashleymills 0:714293de3836 856 0x83098086U, 0x48322bedU, 0xac1e1170U, 0x4e6c5a72U,
ashleymills 0:714293de3836 857 0xfbfd0effU, 0x560f8538U, 0x1e3daed5U, 0x27362d39U,
ashleymills 0:714293de3836 858 0x640a0fd9U, 0x21685ca6U, 0xd19b5b54U, 0x3a24362eU,
ashleymills 0:714293de3836 859 0xb10c0a67U, 0x0f9357e7U, 0xd2b4ee96U, 0x9e1b9b91U,
ashleymills 0:714293de3836 860 0x4f80c0c5U, 0xa261dc20U, 0x695a774bU, 0x161c121aU,
ashleymills 0:714293de3836 861 0x0ae293baU, 0xe5c0a02aU, 0x433c22e0U, 0x1d121b17U,
ashleymills 0:714293de3836 862 0x0b0e090dU, 0xadf28bc7U, 0xb92db6a8U, 0xc8141ea9U,
ashleymills 0:714293de3836 863 0x8557f119U, 0x4caf7507U, 0xbbee99ddU, 0xfda37f60U,
ashleymills 0:714293de3836 864 0x9ff70126U, 0xbc5c72f5U, 0xc544663bU, 0x345bfb7eU,
ashleymills 0:714293de3836 865 0x768b4329U, 0xdccb23c6U, 0x68b6edfcU, 0x63b8e4f1U,
ashleymills 0:714293de3836 866 0xcad731dcU, 0x10426385U, 0x40139722U, 0x2084c611U,
ashleymills 0:714293de3836 867 0x7d854a24U, 0xf8d2bb3dU, 0x11aef932U, 0x6dc729a1U,
ashleymills 0:714293de3836 868 0x4b1d9e2fU, 0xf3dcb230U, 0xec0d8652U, 0xd077c1e3U,
ashleymills 0:714293de3836 869 0x6c2bb316U, 0x99a970b9U, 0xfa119448U, 0x2247e964U,
ashleymills 0:714293de3836 870 0xc4a8fc8cU, 0x1aa0f03fU, 0xd8567d2cU, 0xef223390U,
ashleymills 0:714293de3836 871 0xc787494eU, 0xc1d938d1U, 0xfe8ccaa2U, 0x3698d40bU,
ashleymills 0:714293de3836 872 0xcfa6f581U, 0x28a57adeU, 0x26dab78eU, 0xa43fadbfU,
ashleymills 0:714293de3836 873 0xe42c3a9dU, 0x0d507892U, 0x9b6a5fccU, 0x62547e46U,
ashleymills 0:714293de3836 874 0xc2f68d13U, 0xe890d8b8U, 0x5e2e39f7U, 0xf582c3afU,
ashleymills 0:714293de3836 875 0xbe9f5d80U, 0x7c69d093U, 0xa96fd52dU, 0xb3cf2512U,
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ashleymills 0:714293de3836 1039 0xa6a6a6a6U, 0xc2c2c2c2U, 0x23232323U, 0x3d3d3d3dU,
ashleymills 0:714293de3836 1040 0xeeeeeeeeU, 0x4c4c4c4cU, 0x95959595U, 0x0b0b0b0bU,
ashleymills 0:714293de3836 1041 0x42424242U, 0xfafafafaU, 0xc3c3c3c3U, 0x4e4e4e4eU,
ashleymills 0:714293de3836 1042 0x08080808U, 0x2e2e2e2eU, 0xa1a1a1a1U, 0x66666666U,
ashleymills 0:714293de3836 1043 0x28282828U, 0xd9d9d9d9U, 0x24242424U, 0xb2b2b2b2U,
ashleymills 0:714293de3836 1044 0x76767676U, 0x5b5b5b5bU, 0xa2a2a2a2U, 0x49494949U,
ashleymills 0:714293de3836 1045 0x6d6d6d6dU, 0x8b8b8b8bU, 0xd1d1d1d1U, 0x25252525U,
ashleymills 0:714293de3836 1046 0x72727272U, 0xf8f8f8f8U, 0xf6f6f6f6U, 0x64646464U,
ashleymills 0:714293de3836 1047 0x86868686U, 0x68686868U, 0x98989898U, 0x16161616U,
ashleymills 0:714293de3836 1048 0xd4d4d4d4U, 0xa4a4a4a4U, 0x5c5c5c5cU, 0xccccccccU,
ashleymills 0:714293de3836 1049 0x5d5d5d5dU, 0x65656565U, 0xb6b6b6b6U, 0x92929292U,
ashleymills 0:714293de3836 1050 0x6c6c6c6cU, 0x70707070U, 0x48484848U, 0x50505050U,
ashleymills 0:714293de3836 1051 0xfdfdfdfdU, 0xededededU, 0xb9b9b9b9U, 0xdadadadaU,
ashleymills 0:714293de3836 1052 0x5e5e5e5eU, 0x15151515U, 0x46464646U, 0x57575757U,
ashleymills 0:714293de3836 1053 0xa7a7a7a7U, 0x8d8d8d8dU, 0x9d9d9d9dU, 0x84848484U,
ashleymills 0:714293de3836 1054 0x90909090U, 0xd8d8d8d8U, 0xababababU, 0x00000000U,
ashleymills 0:714293de3836 1055 0x8c8c8c8cU, 0xbcbcbcbcU, 0xd3d3d3d3U, 0x0a0a0a0aU,
ashleymills 0:714293de3836 1056 0xf7f7f7f7U, 0xe4e4e4e4U, 0x58585858U, 0x05050505U,
ashleymills 0:714293de3836 1057 0xb8b8b8b8U, 0xb3b3b3b3U, 0x45454545U, 0x06060606U,
ashleymills 0:714293de3836 1058 0xd0d0d0d0U, 0x2c2c2c2cU, 0x1e1e1e1eU, 0x8f8f8f8fU,
ashleymills 0:714293de3836 1059 0xcacacacaU, 0x3f3f3f3fU, 0x0f0f0f0fU, 0x02020202U,
ashleymills 0:714293de3836 1060 0xc1c1c1c1U, 0xafafafafU, 0xbdbdbdbdU, 0x03030303U,
ashleymills 0:714293de3836 1061 0x01010101U, 0x13131313U, 0x8a8a8a8aU, 0x6b6b6b6bU,
ashleymills 0:714293de3836 1062 0x3a3a3a3aU, 0x91919191U, 0x11111111U, 0x41414141U,
ashleymills 0:714293de3836 1063 0x4f4f4f4fU, 0x67676767U, 0xdcdcdcdcU, 0xeaeaeaeaU,
ashleymills 0:714293de3836 1064 0x97979797U, 0xf2f2f2f2U, 0xcfcfcfcfU, 0xcecececeU,
ashleymills 0:714293de3836 1065 0xf0f0f0f0U, 0xb4b4b4b4U, 0xe6e6e6e6U, 0x73737373U,
ashleymills 0:714293de3836 1066 0x96969696U, 0xacacacacU, 0x74747474U, 0x22222222U,
ashleymills 0:714293de3836 1067 0xe7e7e7e7U, 0xadadadadU, 0x35353535U, 0x85858585U,
ashleymills 0:714293de3836 1068 0xe2e2e2e2U, 0xf9f9f9f9U, 0x37373737U, 0xe8e8e8e8U,
ashleymills 0:714293de3836 1069 0x1c1c1c1cU, 0x75757575U, 0xdfdfdfdfU, 0x6e6e6e6eU,
ashleymills 0:714293de3836 1070 0x47474747U, 0xf1f1f1f1U, 0x1a1a1a1aU, 0x71717171U,
ashleymills 0:714293de3836 1071 0x1d1d1d1dU, 0x29292929U, 0xc5c5c5c5U, 0x89898989U,
ashleymills 0:714293de3836 1072 0x6f6f6f6fU, 0xb7b7b7b7U, 0x62626262U, 0x0e0e0e0eU,
ashleymills 0:714293de3836 1073 0xaaaaaaaaU, 0x18181818U, 0xbebebebeU, 0x1b1b1b1bU,
ashleymills 0:714293de3836 1074 0xfcfcfcfcU, 0x56565656U, 0x3e3e3e3eU, 0x4b4b4b4bU,
ashleymills 0:714293de3836 1075 0xc6c6c6c6U, 0xd2d2d2d2U, 0x79797979U, 0x20202020U,
ashleymills 0:714293de3836 1076 0x9a9a9a9aU, 0xdbdbdbdbU, 0xc0c0c0c0U, 0xfefefefeU,
ashleymills 0:714293de3836 1077 0x78787878U, 0xcdcdcdcdU, 0x5a5a5a5aU, 0xf4f4f4f4U,
ashleymills 0:714293de3836 1078 0x1f1f1f1fU, 0xddddddddU, 0xa8a8a8a8U, 0x33333333U,
ashleymills 0:714293de3836 1079 0x88888888U, 0x07070707U, 0xc7c7c7c7U, 0x31313131U,
ashleymills 0:714293de3836 1080 0xb1b1b1b1U, 0x12121212U, 0x10101010U, 0x59595959U,
ashleymills 0:714293de3836 1081 0x27272727U, 0x80808080U, 0xececececU, 0x5f5f5f5fU,
ashleymills 0:714293de3836 1082 0x60606060U, 0x51515151U, 0x7f7f7f7fU, 0xa9a9a9a9U,
ashleymills 0:714293de3836 1083 0x19191919U, 0xb5b5b5b5U, 0x4a4a4a4aU, 0x0d0d0d0dU,
ashleymills 0:714293de3836 1084 0x2d2d2d2dU, 0xe5e5e5e5U, 0x7a7a7a7aU, 0x9f9f9f9fU,
ashleymills 0:714293de3836 1085 0x93939393U, 0xc9c9c9c9U, 0x9c9c9c9cU, 0xefefefefU,
ashleymills 0:714293de3836 1086 0xa0a0a0a0U, 0xe0e0e0e0U, 0x3b3b3b3bU, 0x4d4d4d4dU,
ashleymills 0:714293de3836 1087 0xaeaeaeaeU, 0x2a2a2a2aU, 0xf5f5f5f5U, 0xb0b0b0b0U,
ashleymills 0:714293de3836 1088 0xc8c8c8c8U, 0xebebebebU, 0xbbbbbbbbU, 0x3c3c3c3cU,
ashleymills 0:714293de3836 1089 0x83838383U, 0x53535353U, 0x99999999U, 0x61616161U,
ashleymills 0:714293de3836 1090 0x17171717U, 0x2b2b2b2bU, 0x04040404U, 0x7e7e7e7eU,
ashleymills 0:714293de3836 1091 0xbabababaU, 0x77777777U, 0xd6d6d6d6U, 0x26262626U,
ashleymills 0:714293de3836 1092 0xe1e1e1e1U, 0x69696969U, 0x14141414U, 0x63636363U,
ashleymills 0:714293de3836 1093 0x55555555U, 0x21212121U, 0x0c0c0c0cU, 0x7d7d7d7dU,
ashleymills 0:714293de3836 1094 }
ashleymills 0:714293de3836 1095 };
ashleymills 0:714293de3836 1096
ashleymills 0:714293de3836 1097
ashleymills 0:714293de3836 1098
ashleymills 0:714293de3836 1099 #define GETBYTE(x, y) (word32)((byte)((x) >> (8 * (y))))
ashleymills 0:714293de3836 1100
ashleymills 0:714293de3836 1101
ashleymills 0:714293de3836 1102 #ifdef CYASSL_AESNI
ashleymills 0:714293de3836 1103
ashleymills 0:714293de3836 1104 #ifndef _MSC_VER
ashleymills 0:714293de3836 1105
ashleymills 0:714293de3836 1106 #define cpuid(func,ax,bx,cx,dx)\
ashleymills 0:714293de3836 1107 __asm__ __volatile__ ("cpuid":\
ashleymills 0:714293de3836 1108 "=a" (ax), "=b" (bx), "=c" (cx), "=d" (dx) : "a" (func));
ashleymills 0:714293de3836 1109
ashleymills 0:714293de3836 1110 #else
ashleymills 0:714293de3836 1111
ashleymills 0:714293de3836 1112 #define cpuid(func,ax,bx,cx,dx)\
ashleymills 0:714293de3836 1113 __asm mov eax, func \
ashleymills 0:714293de3836 1114 __asm cpuid \
ashleymills 0:714293de3836 1115 __asm mov ax, eax \
ashleymills 0:714293de3836 1116 __asm mov bx, ebx \
ashleymills 0:714293de3836 1117 __asm mov cx, ecx \
ashleymills 0:714293de3836 1118 __asm mov dx, edx
ashleymills 0:714293de3836 1119
ashleymills 0:714293de3836 1120 #endif /* _MSC_VER */
ashleymills 0:714293de3836 1121
ashleymills 0:714293de3836 1122
ashleymills 0:714293de3836 1123 static int Check_CPU_support_AES(void)
ashleymills 0:714293de3836 1124 {
ashleymills 0:714293de3836 1125 unsigned int a,b,c,d;
ashleymills 0:714293de3836 1126 cpuid(1,a,b,c,d);
ashleymills 0:714293de3836 1127
ashleymills 0:714293de3836 1128 if (c & 0x2000000)
ashleymills 0:714293de3836 1129 return 1;
ashleymills 0:714293de3836 1130
ashleymills 0:714293de3836 1131 return 0;
ashleymills 0:714293de3836 1132 }
ashleymills 0:714293de3836 1133
ashleymills 0:714293de3836 1134 static int checkAESNI = 0;
ashleymills 0:714293de3836 1135 static int haveAESNI = 0;
ashleymills 0:714293de3836 1136
ashleymills 0:714293de3836 1137
ashleymills 0:714293de3836 1138 /* tell C compiler these are asm functions in case any mix up of ABI underscore
ashleymills 0:714293de3836 1139 prefix between clang/gcc/llvm etc */
ashleymills 0:714293de3836 1140 void AES_CBC_encrypt(const unsigned char* in, unsigned char* out,
ashleymills 0:714293de3836 1141 unsigned char* ivec, unsigned long length,
ashleymills 0:714293de3836 1142 const unsigned char* KS, int nr)
ashleymills 0:714293de3836 1143 asm ("AES_CBC_encrypt");
ashleymills 0:714293de3836 1144
ashleymills 0:714293de3836 1145
ashleymills 0:714293de3836 1146 void AES_CBC_decrypt(const unsigned char* in, unsigned char* out,
ashleymills 0:714293de3836 1147 unsigned char* ivec, unsigned long length,
ashleymills 0:714293de3836 1148 const unsigned char* KS, int nr)
ashleymills 0:714293de3836 1149 asm ("AES_CBC_decrypt");
ashleymills 0:714293de3836 1150
ashleymills 0:714293de3836 1151 void AES_128_Key_Expansion(const unsigned char* userkey,
ashleymills 0:714293de3836 1152 unsigned char* key_schedule)
ashleymills 0:714293de3836 1153 asm ("AES_128_Key_Expansion");
ashleymills 0:714293de3836 1154
ashleymills 0:714293de3836 1155 void AES_192_Key_Expansion(const unsigned char* userkey,
ashleymills 0:714293de3836 1156 unsigned char* key_schedule)
ashleymills 0:714293de3836 1157 asm ("AES_192_Key_Expansion");
ashleymills 0:714293de3836 1158
ashleymills 0:714293de3836 1159 void AES_256_Key_Expansion(const unsigned char* userkey,
ashleymills 0:714293de3836 1160 unsigned char* key_schedule)
ashleymills 0:714293de3836 1161 asm ("AES_256_Key_Expansion");
ashleymills 0:714293de3836 1162
ashleymills 0:714293de3836 1163
ashleymills 0:714293de3836 1164 static int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
ashleymills 0:714293de3836 1165 Aes* aes)
ashleymills 0:714293de3836 1166 {
ashleymills 0:714293de3836 1167 if (!userKey || !aes)
ashleymills 0:714293de3836 1168 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 1169
ashleymills 0:714293de3836 1170 if (bits == 128) {
ashleymills 0:714293de3836 1171 AES_128_Key_Expansion (userKey,(byte*)aes->key); aes->rounds = 10;
ashleymills 0:714293de3836 1172 return 0;
ashleymills 0:714293de3836 1173 }
ashleymills 0:714293de3836 1174 else if (bits == 192) {
ashleymills 0:714293de3836 1175 AES_192_Key_Expansion (userKey,(byte*)aes->key); aes->rounds = 12;
ashleymills 0:714293de3836 1176 return 0;
ashleymills 0:714293de3836 1177 }
ashleymills 0:714293de3836 1178 else if (bits == 256) {
ashleymills 0:714293de3836 1179 AES_256_Key_Expansion (userKey,(byte*)aes->key); aes->rounds = 14;
ashleymills 0:714293de3836 1180 return 0;
ashleymills 0:714293de3836 1181 }
ashleymills 0:714293de3836 1182 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 1183 }
ashleymills 0:714293de3836 1184
ashleymills 0:714293de3836 1185
ashleymills 0:714293de3836 1186 static int AES_set_decrypt_key(const unsigned char* userKey, const int bits,
ashleymills 0:714293de3836 1187 Aes* aes)
ashleymills 0:714293de3836 1188 {
ashleymills 0:714293de3836 1189 int nr;
ashleymills 0:714293de3836 1190 Aes temp_key;
ashleymills 0:714293de3836 1191 __m128i *Key_Schedule = (__m128i*)aes->key;
ashleymills 0:714293de3836 1192 __m128i *Temp_Key_Schedule = (__m128i*)temp_key.key;
ashleymills 0:714293de3836 1193
ashleymills 0:714293de3836 1194 if (!userKey || !aes)
ashleymills 0:714293de3836 1195 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 1196
ashleymills 0:714293de3836 1197 if (AES_set_encrypt_key(userKey,bits,&temp_key) == BAD_FUNC_ARG)
ashleymills 0:714293de3836 1198 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 1199
ashleymills 0:714293de3836 1200 nr = temp_key.rounds;
ashleymills 0:714293de3836 1201 aes->rounds = nr;
ashleymills 0:714293de3836 1202
ashleymills 0:714293de3836 1203 Key_Schedule[nr] = Temp_Key_Schedule[0];
ashleymills 0:714293de3836 1204 Key_Schedule[nr-1] = _mm_aesimc_si128(Temp_Key_Schedule[1]);
ashleymills 0:714293de3836 1205 Key_Schedule[nr-2] = _mm_aesimc_si128(Temp_Key_Schedule[2]);
ashleymills 0:714293de3836 1206 Key_Schedule[nr-3] = _mm_aesimc_si128(Temp_Key_Schedule[3]);
ashleymills 0:714293de3836 1207 Key_Schedule[nr-4] = _mm_aesimc_si128(Temp_Key_Schedule[4]);
ashleymills 0:714293de3836 1208 Key_Schedule[nr-5] = _mm_aesimc_si128(Temp_Key_Schedule[5]);
ashleymills 0:714293de3836 1209 Key_Schedule[nr-6] = _mm_aesimc_si128(Temp_Key_Schedule[6]);
ashleymills 0:714293de3836 1210 Key_Schedule[nr-7] = _mm_aesimc_si128(Temp_Key_Schedule[7]);
ashleymills 0:714293de3836 1211 Key_Schedule[nr-8] = _mm_aesimc_si128(Temp_Key_Schedule[8]);
ashleymills 0:714293de3836 1212 Key_Schedule[nr-9] = _mm_aesimc_si128(Temp_Key_Schedule[9]);
ashleymills 0:714293de3836 1213
ashleymills 0:714293de3836 1214 if(nr>10) {
ashleymills 0:714293de3836 1215 Key_Schedule[nr-10] = _mm_aesimc_si128(Temp_Key_Schedule[10]);
ashleymills 0:714293de3836 1216 Key_Schedule[nr-11] = _mm_aesimc_si128(Temp_Key_Schedule[11]);
ashleymills 0:714293de3836 1217 }
ashleymills 0:714293de3836 1218
ashleymills 0:714293de3836 1219 if(nr>12) {
ashleymills 0:714293de3836 1220 Key_Schedule[nr-12] = _mm_aesimc_si128(Temp_Key_Schedule[12]);
ashleymills 0:714293de3836 1221 Key_Schedule[nr-13] = _mm_aesimc_si128(Temp_Key_Schedule[13]);
ashleymills 0:714293de3836 1222 }
ashleymills 0:714293de3836 1223
ashleymills 0:714293de3836 1224 Key_Schedule[0] = Temp_Key_Schedule[nr];
ashleymills 0:714293de3836 1225
ashleymills 0:714293de3836 1226 return 0;
ashleymills 0:714293de3836 1227 }
ashleymills 0:714293de3836 1228
ashleymills 0:714293de3836 1229
ashleymills 0:714293de3836 1230
ashleymills 0:714293de3836 1231 #endif /* CYASSL_AESNI */
ashleymills 0:714293de3836 1232
ashleymills 0:714293de3836 1233
ashleymills 0:714293de3836 1234 static int AesSetKeyLocal(Aes* aes, const byte* userKey, word32 keylen,
ashleymills 0:714293de3836 1235 const byte* iv, int dir)
ashleymills 0:714293de3836 1236 {
ashleymills 0:714293de3836 1237 word32 temp, *rk = aes->key;
ashleymills 0:714293de3836 1238 unsigned int i = 0;
ashleymills 0:714293de3836 1239
ashleymills 0:714293de3836 1240 #ifdef CYASSL_AESNI
ashleymills 0:714293de3836 1241 aes->use_aesni = 0;
ashleymills 0:714293de3836 1242 #endif /* CYASSL_AESNI */
ashleymills 0:714293de3836 1243 aes->rounds = keylen/4 + 6;
ashleymills 0:714293de3836 1244
ashleymills 0:714293de3836 1245 XMEMCPY(rk, userKey, keylen);
ashleymills 0:714293de3836 1246 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 1247 ByteReverseWords(rk, rk, keylen);
ashleymills 0:714293de3836 1248 #endif
ashleymills 0:714293de3836 1249
ashleymills 0:714293de3836 1250 switch(keylen)
ashleymills 0:714293de3836 1251 {
ashleymills 0:714293de3836 1252 case 16:
ashleymills 0:714293de3836 1253 while (1)
ashleymills 0:714293de3836 1254 {
ashleymills 0:714293de3836 1255 temp = rk[3];
ashleymills 0:714293de3836 1256 rk[4] = rk[0] ^
ashleymills 0:714293de3836 1257 (Te[4][GETBYTE(temp, 2)] & 0xff000000) ^
ashleymills 0:714293de3836 1258 (Te[4][GETBYTE(temp, 1)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1259 (Te[4][GETBYTE(temp, 0)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1260 (Te[4][GETBYTE(temp, 3)] & 0x000000ff) ^
ashleymills 0:714293de3836 1261 rcon[i];
ashleymills 0:714293de3836 1262 rk[5] = rk[1] ^ rk[4];
ashleymills 0:714293de3836 1263 rk[6] = rk[2] ^ rk[5];
ashleymills 0:714293de3836 1264 rk[7] = rk[3] ^ rk[6];
ashleymills 0:714293de3836 1265 if (++i == 10)
ashleymills 0:714293de3836 1266 break;
ashleymills 0:714293de3836 1267 rk += 4;
ashleymills 0:714293de3836 1268 }
ashleymills 0:714293de3836 1269 break;
ashleymills 0:714293de3836 1270
ashleymills 0:714293de3836 1271 case 24:
ashleymills 0:714293de3836 1272 while (1) /* for (;;) here triggers a bug in VC60 SP4 w/ Pro Pack */
ashleymills 0:714293de3836 1273 {
ashleymills 0:714293de3836 1274 temp = rk[ 5];
ashleymills 0:714293de3836 1275 rk[ 6] = rk[ 0] ^
ashleymills 0:714293de3836 1276 (Te[4][GETBYTE(temp, 2)] & 0xff000000) ^
ashleymills 0:714293de3836 1277 (Te[4][GETBYTE(temp, 1)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1278 (Te[4][GETBYTE(temp, 0)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1279 (Te[4][GETBYTE(temp, 3)] & 0x000000ff) ^
ashleymills 0:714293de3836 1280 rcon[i];
ashleymills 0:714293de3836 1281 rk[ 7] = rk[ 1] ^ rk[ 6];
ashleymills 0:714293de3836 1282 rk[ 8] = rk[ 2] ^ rk[ 7];
ashleymills 0:714293de3836 1283 rk[ 9] = rk[ 3] ^ rk[ 8];
ashleymills 0:714293de3836 1284 if (++i == 8)
ashleymills 0:714293de3836 1285 break;
ashleymills 0:714293de3836 1286 rk[10] = rk[ 4] ^ rk[ 9];
ashleymills 0:714293de3836 1287 rk[11] = rk[ 5] ^ rk[10];
ashleymills 0:714293de3836 1288 rk += 6;
ashleymills 0:714293de3836 1289 }
ashleymills 0:714293de3836 1290 break;
ashleymills 0:714293de3836 1291
ashleymills 0:714293de3836 1292 case 32:
ashleymills 0:714293de3836 1293 while (1)
ashleymills 0:714293de3836 1294 {
ashleymills 0:714293de3836 1295 temp = rk[ 7];
ashleymills 0:714293de3836 1296 rk[ 8] = rk[ 0] ^
ashleymills 0:714293de3836 1297 (Te[4][GETBYTE(temp, 2)] & 0xff000000) ^
ashleymills 0:714293de3836 1298 (Te[4][GETBYTE(temp, 1)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1299 (Te[4][GETBYTE(temp, 0)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1300 (Te[4][GETBYTE(temp, 3)] & 0x000000ff) ^
ashleymills 0:714293de3836 1301 rcon[i];
ashleymills 0:714293de3836 1302 rk[ 9] = rk[ 1] ^ rk[ 8];
ashleymills 0:714293de3836 1303 rk[10] = rk[ 2] ^ rk[ 9];
ashleymills 0:714293de3836 1304 rk[11] = rk[ 3] ^ rk[10];
ashleymills 0:714293de3836 1305 if (++i == 7)
ashleymills 0:714293de3836 1306 break;
ashleymills 0:714293de3836 1307 temp = rk[11];
ashleymills 0:714293de3836 1308 rk[12] = rk[ 4] ^
ashleymills 0:714293de3836 1309 (Te[4][GETBYTE(temp, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1310 (Te[4][GETBYTE(temp, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1311 (Te[4][GETBYTE(temp, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1312 (Te[4][GETBYTE(temp, 0)] & 0x000000ff);
ashleymills 0:714293de3836 1313 rk[13] = rk[ 5] ^ rk[12];
ashleymills 0:714293de3836 1314 rk[14] = rk[ 6] ^ rk[13];
ashleymills 0:714293de3836 1315 rk[15] = rk[ 7] ^ rk[14];
ashleymills 0:714293de3836 1316
ashleymills 0:714293de3836 1317 rk += 8;
ashleymills 0:714293de3836 1318 }
ashleymills 0:714293de3836 1319 break;
ashleymills 0:714293de3836 1320
ashleymills 0:714293de3836 1321 default:
ashleymills 0:714293de3836 1322 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 1323 }
ashleymills 0:714293de3836 1324
ashleymills 0:714293de3836 1325 if (dir == AES_DECRYPTION)
ashleymills 0:714293de3836 1326 {
ashleymills 0:714293de3836 1327 unsigned int j;
ashleymills 0:714293de3836 1328 rk = aes->key;
ashleymills 0:714293de3836 1329
ashleymills 0:714293de3836 1330 /* invert the order of the round keys: */
ashleymills 0:714293de3836 1331 for (i = 0, j = 4* aes->rounds; i < j; i += 4, j -= 4) {
ashleymills 0:714293de3836 1332 temp = rk[i ]; rk[i ] = rk[j ]; rk[j ] = temp;
ashleymills 0:714293de3836 1333 temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
ashleymills 0:714293de3836 1334 temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
ashleymills 0:714293de3836 1335 temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
ashleymills 0:714293de3836 1336 }
ashleymills 0:714293de3836 1337 /* apply the inverse MixColumn transform to all round keys but the
ashleymills 0:714293de3836 1338 first and the last: */
ashleymills 0:714293de3836 1339 for (i = 1; i < aes->rounds; i++) {
ashleymills 0:714293de3836 1340 rk += 4;
ashleymills 0:714293de3836 1341 rk[0] =
ashleymills 0:714293de3836 1342 Td[0][Te[4][GETBYTE(rk[0], 3)] & 0xff] ^
ashleymills 0:714293de3836 1343 Td[1][Te[4][GETBYTE(rk[0], 2)] & 0xff] ^
ashleymills 0:714293de3836 1344 Td[2][Te[4][GETBYTE(rk[0], 1)] & 0xff] ^
ashleymills 0:714293de3836 1345 Td[3][Te[4][GETBYTE(rk[0], 0)] & 0xff];
ashleymills 0:714293de3836 1346 rk[1] =
ashleymills 0:714293de3836 1347 Td[0][Te[4][GETBYTE(rk[1], 3)] & 0xff] ^
ashleymills 0:714293de3836 1348 Td[1][Te[4][GETBYTE(rk[1], 2)] & 0xff] ^
ashleymills 0:714293de3836 1349 Td[2][Te[4][GETBYTE(rk[1], 1)] & 0xff] ^
ashleymills 0:714293de3836 1350 Td[3][Te[4][GETBYTE(rk[1], 0)] & 0xff];
ashleymills 0:714293de3836 1351 rk[2] =
ashleymills 0:714293de3836 1352 Td[0][Te[4][GETBYTE(rk[2], 3)] & 0xff] ^
ashleymills 0:714293de3836 1353 Td[1][Te[4][GETBYTE(rk[2], 2)] & 0xff] ^
ashleymills 0:714293de3836 1354 Td[2][Te[4][GETBYTE(rk[2], 1)] & 0xff] ^
ashleymills 0:714293de3836 1355 Td[3][Te[4][GETBYTE(rk[2], 0)] & 0xff];
ashleymills 0:714293de3836 1356 rk[3] =
ashleymills 0:714293de3836 1357 Td[0][Te[4][GETBYTE(rk[3], 3)] & 0xff] ^
ashleymills 0:714293de3836 1358 Td[1][Te[4][GETBYTE(rk[3], 2)] & 0xff] ^
ashleymills 0:714293de3836 1359 Td[2][Te[4][GETBYTE(rk[3], 1)] & 0xff] ^
ashleymills 0:714293de3836 1360 Td[3][Te[4][GETBYTE(rk[3], 0)] & 0xff];
ashleymills 0:714293de3836 1361 }
ashleymills 0:714293de3836 1362 }
ashleymills 0:714293de3836 1363
ashleymills 0:714293de3836 1364 return AesSetIV(aes, iv);
ashleymills 0:714293de3836 1365 }
ashleymills 0:714293de3836 1366
ashleymills 0:714293de3836 1367
ashleymills 0:714293de3836 1368 int AesSetKey(Aes* aes, const byte* userKey, word32 keylen, const byte* iv,
ashleymills 0:714293de3836 1369 int dir)
ashleymills 0:714293de3836 1370 {
ashleymills 0:714293de3836 1371
ashleymills 0:714293de3836 1372 if (!((keylen == 16) || (keylen == 24) || (keylen == 32)))
ashleymills 0:714293de3836 1373 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 1374
ashleymills 0:714293de3836 1375 #ifdef HAVE_CAVIUM
ashleymills 0:714293de3836 1376 if (aes->magic == CYASSL_AES_CAVIUM_MAGIC)
ashleymills 0:714293de3836 1377 return AesCaviumSetKey(aes, userKey, keylen, iv);
ashleymills 0:714293de3836 1378 #endif
ashleymills 0:714293de3836 1379
ashleymills 0:714293de3836 1380 #ifdef CYASSL_AESNI
ashleymills 0:714293de3836 1381 if (checkAESNI == 0) {
ashleymills 0:714293de3836 1382 haveAESNI = Check_CPU_support_AES();
ashleymills 0:714293de3836 1383 checkAESNI = 1;
ashleymills 0:714293de3836 1384 }
ashleymills 0:714293de3836 1385 if (haveAESNI) {
ashleymills 0:714293de3836 1386 aes->use_aesni = 1;
ashleymills 0:714293de3836 1387 if (iv)
ashleymills 0:714293de3836 1388 XMEMCPY(aes->reg, iv, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1389 if (dir == AES_ENCRYPTION)
ashleymills 0:714293de3836 1390 return AES_set_encrypt_key(userKey, keylen * 8, aes);
ashleymills 0:714293de3836 1391 else
ashleymills 0:714293de3836 1392 return AES_set_decrypt_key(userKey, keylen * 8, aes);
ashleymills 0:714293de3836 1393 }
ashleymills 0:714293de3836 1394 #endif /* CYASSL_AESNI */
ashleymills 0:714293de3836 1395
ashleymills 0:714293de3836 1396 return AesSetKeyLocal(aes, userKey, keylen, iv, dir);
ashleymills 0:714293de3836 1397 }
ashleymills 0:714293de3836 1398
ashleymills 0:714293de3836 1399
ashleymills 0:714293de3836 1400 static void AesEncrypt(Aes* aes, const byte* inBlock, byte* outBlock)
ashleymills 0:714293de3836 1401 {
ashleymills 0:714293de3836 1402 word32 s0, s1, s2, s3;
ashleymills 0:714293de3836 1403 word32 t0, t1, t2, t3;
ashleymills 0:714293de3836 1404 word32 r = aes->rounds >> 1;
ashleymills 0:714293de3836 1405
ashleymills 0:714293de3836 1406 const word32* rk = aes->key;
ashleymills 0:714293de3836 1407 if (r > 7 || r == 0) {
ashleymills 0:714293de3836 1408 CYASSL_MSG("AesEncrypt encountered improper key, set it up");
ashleymills 0:714293de3836 1409 return; /* stop instead of segfaulting, set up your keys! */
ashleymills 0:714293de3836 1410 }
ashleymills 0:714293de3836 1411 #ifdef CYASSL_AESNI
ashleymills 0:714293de3836 1412 if (aes->use_aesni) {
ashleymills 0:714293de3836 1413 CYASSL_MSG("AesEncrypt encountered aesni keysetup, don't use direct");
ashleymills 0:714293de3836 1414 return; /* just stop now */
ashleymills 0:714293de3836 1415 }
ashleymills 0:714293de3836 1416 #endif
ashleymills 0:714293de3836 1417
ashleymills 0:714293de3836 1418 /*
ashleymills 0:714293de3836 1419 * map byte array block to cipher state
ashleymills 0:714293de3836 1420 * and add initial round key:
ashleymills 0:714293de3836 1421 */
ashleymills 0:714293de3836 1422 XMEMCPY(&s0, inBlock, sizeof(s0));
ashleymills 0:714293de3836 1423 XMEMCPY(&s1, inBlock + sizeof(s0), sizeof(s1));
ashleymills 0:714293de3836 1424 XMEMCPY(&s2, inBlock + 2 * sizeof(s0), sizeof(s2));
ashleymills 0:714293de3836 1425 XMEMCPY(&s3, inBlock + 3 * sizeof(s0), sizeof(s3));
ashleymills 0:714293de3836 1426
ashleymills 0:714293de3836 1427 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 1428 s0 = ByteReverseWord32(s0);
ashleymills 0:714293de3836 1429 s1 = ByteReverseWord32(s1);
ashleymills 0:714293de3836 1430 s2 = ByteReverseWord32(s2);
ashleymills 0:714293de3836 1431 s3 = ByteReverseWord32(s3);
ashleymills 0:714293de3836 1432 #endif
ashleymills 0:714293de3836 1433
ashleymills 0:714293de3836 1434 s0 ^= rk[0];
ashleymills 0:714293de3836 1435 s1 ^= rk[1];
ashleymills 0:714293de3836 1436 s2 ^= rk[2];
ashleymills 0:714293de3836 1437 s3 ^= rk[3];
ashleymills 0:714293de3836 1438
ashleymills 0:714293de3836 1439 /*
ashleymills 0:714293de3836 1440 * Nr - 1 full rounds:
ashleymills 0:714293de3836 1441 */
ashleymills 0:714293de3836 1442
ashleymills 0:714293de3836 1443 for (;;) {
ashleymills 0:714293de3836 1444 t0 =
ashleymills 0:714293de3836 1445 Te[0][GETBYTE(s0, 3)] ^
ashleymills 0:714293de3836 1446 Te[1][GETBYTE(s1, 2)] ^
ashleymills 0:714293de3836 1447 Te[2][GETBYTE(s2, 1)] ^
ashleymills 0:714293de3836 1448 Te[3][GETBYTE(s3, 0)] ^
ashleymills 0:714293de3836 1449 rk[4];
ashleymills 0:714293de3836 1450 t1 =
ashleymills 0:714293de3836 1451 Te[0][GETBYTE(s1, 3)] ^
ashleymills 0:714293de3836 1452 Te[1][GETBYTE(s2, 2)] ^
ashleymills 0:714293de3836 1453 Te[2][GETBYTE(s3, 1)] ^
ashleymills 0:714293de3836 1454 Te[3][GETBYTE(s0, 0)] ^
ashleymills 0:714293de3836 1455 rk[5];
ashleymills 0:714293de3836 1456 t2 =
ashleymills 0:714293de3836 1457 Te[0][GETBYTE(s2, 3)] ^
ashleymills 0:714293de3836 1458 Te[1][GETBYTE(s3, 2)] ^
ashleymills 0:714293de3836 1459 Te[2][GETBYTE(s0, 1)] ^
ashleymills 0:714293de3836 1460 Te[3][GETBYTE(s1, 0)] ^
ashleymills 0:714293de3836 1461 rk[6];
ashleymills 0:714293de3836 1462 t3 =
ashleymills 0:714293de3836 1463 Te[0][GETBYTE(s3, 3)] ^
ashleymills 0:714293de3836 1464 Te[1][GETBYTE(s0, 2)] ^
ashleymills 0:714293de3836 1465 Te[2][GETBYTE(s1, 1)] ^
ashleymills 0:714293de3836 1466 Te[3][GETBYTE(s2, 0)] ^
ashleymills 0:714293de3836 1467 rk[7];
ashleymills 0:714293de3836 1468
ashleymills 0:714293de3836 1469 rk += 8;
ashleymills 0:714293de3836 1470 if (--r == 0) {
ashleymills 0:714293de3836 1471 break;
ashleymills 0:714293de3836 1472 }
ashleymills 0:714293de3836 1473
ashleymills 0:714293de3836 1474 s0 =
ashleymills 0:714293de3836 1475 Te[0][GETBYTE(t0, 3)] ^
ashleymills 0:714293de3836 1476 Te[1][GETBYTE(t1, 2)] ^
ashleymills 0:714293de3836 1477 Te[2][GETBYTE(t2, 1)] ^
ashleymills 0:714293de3836 1478 Te[3][GETBYTE(t3, 0)] ^
ashleymills 0:714293de3836 1479 rk[0];
ashleymills 0:714293de3836 1480 s1 =
ashleymills 0:714293de3836 1481 Te[0][GETBYTE(t1, 3)] ^
ashleymills 0:714293de3836 1482 Te[1][GETBYTE(t2, 2)] ^
ashleymills 0:714293de3836 1483 Te[2][GETBYTE(t3, 1)] ^
ashleymills 0:714293de3836 1484 Te[3][GETBYTE(t0, 0)] ^
ashleymills 0:714293de3836 1485 rk[1];
ashleymills 0:714293de3836 1486 s2 =
ashleymills 0:714293de3836 1487 Te[0][GETBYTE(t2, 3)] ^
ashleymills 0:714293de3836 1488 Te[1][GETBYTE(t3, 2)] ^
ashleymills 0:714293de3836 1489 Te[2][GETBYTE(t0, 1)] ^
ashleymills 0:714293de3836 1490 Te[3][GETBYTE(t1, 0)] ^
ashleymills 0:714293de3836 1491 rk[2];
ashleymills 0:714293de3836 1492 s3 =
ashleymills 0:714293de3836 1493 Te[0][GETBYTE(t3, 3)] ^
ashleymills 0:714293de3836 1494 Te[1][GETBYTE(t0, 2)] ^
ashleymills 0:714293de3836 1495 Te[2][GETBYTE(t1, 1)] ^
ashleymills 0:714293de3836 1496 Te[3][GETBYTE(t2, 0)] ^
ashleymills 0:714293de3836 1497 rk[3];
ashleymills 0:714293de3836 1498 }
ashleymills 0:714293de3836 1499
ashleymills 0:714293de3836 1500 /*
ashleymills 0:714293de3836 1501 * apply last round and
ashleymills 0:714293de3836 1502 * map cipher state to byte array block:
ashleymills 0:714293de3836 1503 */
ashleymills 0:714293de3836 1504
ashleymills 0:714293de3836 1505 s0 =
ashleymills 0:714293de3836 1506 (Te[4][GETBYTE(t0, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1507 (Te[4][GETBYTE(t1, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1508 (Te[4][GETBYTE(t2, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1509 (Te[4][GETBYTE(t3, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1510 rk[0];
ashleymills 0:714293de3836 1511 s1 =
ashleymills 0:714293de3836 1512 (Te[4][GETBYTE(t1, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1513 (Te[4][GETBYTE(t2, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1514 (Te[4][GETBYTE(t3, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1515 (Te[4][GETBYTE(t0, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1516 rk[1];
ashleymills 0:714293de3836 1517 s2 =
ashleymills 0:714293de3836 1518 (Te[4][GETBYTE(t2, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1519 (Te[4][GETBYTE(t3, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1520 (Te[4][GETBYTE(t0, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1521 (Te[4][GETBYTE(t1, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1522 rk[2];
ashleymills 0:714293de3836 1523 s3 =
ashleymills 0:714293de3836 1524 (Te[4][GETBYTE(t3, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1525 (Te[4][GETBYTE(t0, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1526 (Te[4][GETBYTE(t1, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1527 (Te[4][GETBYTE(t2, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1528 rk[3];
ashleymills 0:714293de3836 1529
ashleymills 0:714293de3836 1530 /* write out */
ashleymills 0:714293de3836 1531 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 1532 s0 = ByteReverseWord32(s0);
ashleymills 0:714293de3836 1533 s1 = ByteReverseWord32(s1);
ashleymills 0:714293de3836 1534 s2 = ByteReverseWord32(s2);
ashleymills 0:714293de3836 1535 s3 = ByteReverseWord32(s3);
ashleymills 0:714293de3836 1536 #endif
ashleymills 0:714293de3836 1537
ashleymills 0:714293de3836 1538 XMEMCPY(outBlock, &s0, sizeof(s0));
ashleymills 0:714293de3836 1539 XMEMCPY(outBlock + sizeof(s0), &s1, sizeof(s1));
ashleymills 0:714293de3836 1540 XMEMCPY(outBlock + 2 * sizeof(s0), &s2, sizeof(s2));
ashleymills 0:714293de3836 1541 XMEMCPY(outBlock + 3 * sizeof(s0), &s3, sizeof(s3));
ashleymills 0:714293de3836 1542 }
ashleymills 0:714293de3836 1543
ashleymills 0:714293de3836 1544
ashleymills 0:714293de3836 1545 static void AesDecrypt(Aes* aes, const byte* inBlock, byte* outBlock)
ashleymills 0:714293de3836 1546 {
ashleymills 0:714293de3836 1547 word32 s0, s1, s2, s3;
ashleymills 0:714293de3836 1548 word32 t0, t1, t2, t3;
ashleymills 0:714293de3836 1549 word32 r = aes->rounds >> 1;
ashleymills 0:714293de3836 1550
ashleymills 0:714293de3836 1551 const word32* rk = aes->key;
ashleymills 0:714293de3836 1552 if (r > 7 || r == 0) {
ashleymills 0:714293de3836 1553 CYASSL_MSG("AesDecrypt encountered improper key, set it up");
ashleymills 0:714293de3836 1554 return; /* stop instead of segfaulting, set up your keys! */
ashleymills 0:714293de3836 1555 }
ashleymills 0:714293de3836 1556 #ifdef CYASSL_AESNI
ashleymills 0:714293de3836 1557 if (aes->use_aesni) {
ashleymills 0:714293de3836 1558 CYASSL_MSG("AesEncrypt encountered aesni keysetup, don't use direct");
ashleymills 0:714293de3836 1559 return; /* just stop now */
ashleymills 0:714293de3836 1560 }
ashleymills 0:714293de3836 1561 #endif
ashleymills 0:714293de3836 1562
ashleymills 0:714293de3836 1563 /*
ashleymills 0:714293de3836 1564 * map byte array block to cipher state
ashleymills 0:714293de3836 1565 * and add initial round key:
ashleymills 0:714293de3836 1566 */
ashleymills 0:714293de3836 1567 XMEMCPY(&s0, inBlock, sizeof(s0));
ashleymills 0:714293de3836 1568 XMEMCPY(&s1, inBlock + sizeof(s0), sizeof(s1));
ashleymills 0:714293de3836 1569 XMEMCPY(&s2, inBlock + 2 * sizeof(s0), sizeof(s2));
ashleymills 0:714293de3836 1570 XMEMCPY(&s3, inBlock + 3 * sizeof(s0), sizeof(s3));
ashleymills 0:714293de3836 1571
ashleymills 0:714293de3836 1572 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 1573 s0 = ByteReverseWord32(s0);
ashleymills 0:714293de3836 1574 s1 = ByteReverseWord32(s1);
ashleymills 0:714293de3836 1575 s2 = ByteReverseWord32(s2);
ashleymills 0:714293de3836 1576 s3 = ByteReverseWord32(s3);
ashleymills 0:714293de3836 1577 #endif
ashleymills 0:714293de3836 1578
ashleymills 0:714293de3836 1579 s0 ^= rk[0];
ashleymills 0:714293de3836 1580 s1 ^= rk[1];
ashleymills 0:714293de3836 1581 s2 ^= rk[2];
ashleymills 0:714293de3836 1582 s3 ^= rk[3];
ashleymills 0:714293de3836 1583
ashleymills 0:714293de3836 1584 /*
ashleymills 0:714293de3836 1585 * Nr - 1 full rounds:
ashleymills 0:714293de3836 1586 */
ashleymills 0:714293de3836 1587
ashleymills 0:714293de3836 1588 for (;;) {
ashleymills 0:714293de3836 1589 t0 =
ashleymills 0:714293de3836 1590 Td[0][GETBYTE(s0, 3)] ^
ashleymills 0:714293de3836 1591 Td[1][GETBYTE(s3, 2)] ^
ashleymills 0:714293de3836 1592 Td[2][GETBYTE(s2, 1)] ^
ashleymills 0:714293de3836 1593 Td[3][GETBYTE(s1, 0)] ^
ashleymills 0:714293de3836 1594 rk[4];
ashleymills 0:714293de3836 1595 t1 =
ashleymills 0:714293de3836 1596 Td[0][GETBYTE(s1, 3)] ^
ashleymills 0:714293de3836 1597 Td[1][GETBYTE(s0, 2)] ^
ashleymills 0:714293de3836 1598 Td[2][GETBYTE(s3, 1)] ^
ashleymills 0:714293de3836 1599 Td[3][GETBYTE(s2, 0)] ^
ashleymills 0:714293de3836 1600 rk[5];
ashleymills 0:714293de3836 1601 t2 =
ashleymills 0:714293de3836 1602 Td[0][GETBYTE(s2, 3)] ^
ashleymills 0:714293de3836 1603 Td[1][GETBYTE(s1, 2)] ^
ashleymills 0:714293de3836 1604 Td[2][GETBYTE(s0, 1)] ^
ashleymills 0:714293de3836 1605 Td[3][GETBYTE(s3, 0)] ^
ashleymills 0:714293de3836 1606 rk[6];
ashleymills 0:714293de3836 1607 t3 =
ashleymills 0:714293de3836 1608 Td[0][GETBYTE(s3, 3)] ^
ashleymills 0:714293de3836 1609 Td[1][GETBYTE(s2, 2)] ^
ashleymills 0:714293de3836 1610 Td[2][GETBYTE(s1, 1)] ^
ashleymills 0:714293de3836 1611 Td[3][GETBYTE(s0, 0)] ^
ashleymills 0:714293de3836 1612 rk[7];
ashleymills 0:714293de3836 1613
ashleymills 0:714293de3836 1614 rk += 8;
ashleymills 0:714293de3836 1615 if (--r == 0) {
ashleymills 0:714293de3836 1616 break;
ashleymills 0:714293de3836 1617 }
ashleymills 0:714293de3836 1618
ashleymills 0:714293de3836 1619 s0 =
ashleymills 0:714293de3836 1620 Td[0][GETBYTE(t0, 3)] ^
ashleymills 0:714293de3836 1621 Td[1][GETBYTE(t3, 2)] ^
ashleymills 0:714293de3836 1622 Td[2][GETBYTE(t2, 1)] ^
ashleymills 0:714293de3836 1623 Td[3][GETBYTE(t1, 0)] ^
ashleymills 0:714293de3836 1624 rk[0];
ashleymills 0:714293de3836 1625 s1 =
ashleymills 0:714293de3836 1626 Td[0][GETBYTE(t1, 3)] ^
ashleymills 0:714293de3836 1627 Td[1][GETBYTE(t0, 2)] ^
ashleymills 0:714293de3836 1628 Td[2][GETBYTE(t3, 1)] ^
ashleymills 0:714293de3836 1629 Td[3][GETBYTE(t2, 0)] ^
ashleymills 0:714293de3836 1630 rk[1];
ashleymills 0:714293de3836 1631 s2 =
ashleymills 0:714293de3836 1632 Td[0][GETBYTE(t2, 3)] ^
ashleymills 0:714293de3836 1633 Td[1][GETBYTE(t1, 2)] ^
ashleymills 0:714293de3836 1634 Td[2][GETBYTE(t0, 1)] ^
ashleymills 0:714293de3836 1635 Td[3][GETBYTE(t3, 0)] ^
ashleymills 0:714293de3836 1636 rk[2];
ashleymills 0:714293de3836 1637 s3 =
ashleymills 0:714293de3836 1638 Td[0][GETBYTE(t3, 3)] ^
ashleymills 0:714293de3836 1639 Td[1][GETBYTE(t2, 2)] ^
ashleymills 0:714293de3836 1640 Td[2][GETBYTE(t1, 1)] ^
ashleymills 0:714293de3836 1641 Td[3][GETBYTE(t0, 0)] ^
ashleymills 0:714293de3836 1642 rk[3];
ashleymills 0:714293de3836 1643 }
ashleymills 0:714293de3836 1644 /*
ashleymills 0:714293de3836 1645 * apply last round and
ashleymills 0:714293de3836 1646 * map cipher state to byte array block:
ashleymills 0:714293de3836 1647 */
ashleymills 0:714293de3836 1648 s0 =
ashleymills 0:714293de3836 1649 (Td[4][GETBYTE(t0, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1650 (Td[4][GETBYTE(t3, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1651 (Td[4][GETBYTE(t2, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1652 (Td[4][GETBYTE(t1, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1653 rk[0];
ashleymills 0:714293de3836 1654 s1 =
ashleymills 0:714293de3836 1655 (Td[4][GETBYTE(t1, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1656 (Td[4][GETBYTE(t0, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1657 (Td[4][GETBYTE(t3, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1658 (Td[4][GETBYTE(t2, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1659 rk[1];
ashleymills 0:714293de3836 1660 s2 =
ashleymills 0:714293de3836 1661 (Td[4][GETBYTE(t2, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1662 (Td[4][GETBYTE(t1, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1663 (Td[4][GETBYTE(t0, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1664 (Td[4][GETBYTE(t3, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1665 rk[2];
ashleymills 0:714293de3836 1666 s3 =
ashleymills 0:714293de3836 1667 (Td[4][GETBYTE(t3, 3)] & 0xff000000) ^
ashleymills 0:714293de3836 1668 (Td[4][GETBYTE(t2, 2)] & 0x00ff0000) ^
ashleymills 0:714293de3836 1669 (Td[4][GETBYTE(t1, 1)] & 0x0000ff00) ^
ashleymills 0:714293de3836 1670 (Td[4][GETBYTE(t0, 0)] & 0x000000ff) ^
ashleymills 0:714293de3836 1671 rk[3];
ashleymills 0:714293de3836 1672
ashleymills 0:714293de3836 1673 /* write out */
ashleymills 0:714293de3836 1674 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 1675 s0 = ByteReverseWord32(s0);
ashleymills 0:714293de3836 1676 s1 = ByteReverseWord32(s1);
ashleymills 0:714293de3836 1677 s2 = ByteReverseWord32(s2);
ashleymills 0:714293de3836 1678 s3 = ByteReverseWord32(s3);
ashleymills 0:714293de3836 1679 #endif
ashleymills 0:714293de3836 1680
ashleymills 0:714293de3836 1681 XMEMCPY(outBlock, &s0, sizeof(s0));
ashleymills 0:714293de3836 1682 XMEMCPY(outBlock + sizeof(s0), &s1, sizeof(s1));
ashleymills 0:714293de3836 1683 XMEMCPY(outBlock + 2 * sizeof(s0), &s2, sizeof(s2));
ashleymills 0:714293de3836 1684 XMEMCPY(outBlock + 3 * sizeof(s0), &s3, sizeof(s3));
ashleymills 0:714293de3836 1685 }
ashleymills 0:714293de3836 1686
ashleymills 0:714293de3836 1687
ashleymills 0:714293de3836 1688 int AesCbcEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
ashleymills 0:714293de3836 1689 {
ashleymills 0:714293de3836 1690 word32 blocks = sz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1691
ashleymills 0:714293de3836 1692 #ifdef HAVE_CAVIUM
ashleymills 0:714293de3836 1693 if (aes->magic == CYASSL_AES_CAVIUM_MAGIC)
ashleymills 0:714293de3836 1694 return AesCaviumCbcEncrypt(aes, out, in, sz);
ashleymills 0:714293de3836 1695 #endif
ashleymills 0:714293de3836 1696
ashleymills 0:714293de3836 1697 #ifdef CYASSL_AESNI
ashleymills 0:714293de3836 1698 if (haveAESNI) {
ashleymills 0:714293de3836 1699 #ifdef DEBUG_AESNI
ashleymills 0:714293de3836 1700 printf("about to aes cbc encrypt\n");
ashleymills 0:714293de3836 1701 printf("in = %p\n", in);
ashleymills 0:714293de3836 1702 printf("out = %p\n", out);
ashleymills 0:714293de3836 1703 printf("aes->key = %p\n", aes->key);
ashleymills 0:714293de3836 1704 printf("aes->reg = %p\n", aes->reg);
ashleymills 0:714293de3836 1705 printf("aes->rounds = %d\n", aes->rounds);
ashleymills 0:714293de3836 1706 printf("sz = %d\n", sz);
ashleymills 0:714293de3836 1707 #endif
ashleymills 0:714293de3836 1708
ashleymills 0:714293de3836 1709 /* check alignment, decrypt doesn't need alignment */
ashleymills 0:714293de3836 1710 if ((word)in % 16) {
ashleymills 0:714293de3836 1711 #ifndef NO_CYASSL_ALLOC_ALIGN
ashleymills 0:714293de3836 1712 byte* tmp = (byte*)XMALLOC(sz, NULL, DYNAMIC_TYPE_TMP_BUFFER);
ashleymills 0:714293de3836 1713 if (tmp == NULL) return MEMORY_E;
ashleymills 0:714293de3836 1714
ashleymills 0:714293de3836 1715 XMEMCPY(tmp, in, sz);
ashleymills 0:714293de3836 1716 AES_CBC_encrypt(tmp, tmp, (byte*)aes->reg, sz, (byte*)aes->key,
ashleymills 0:714293de3836 1717 aes->rounds);
ashleymills 0:714293de3836 1718 /* store iv for next call */
ashleymills 0:714293de3836 1719 XMEMCPY(aes->reg, tmp + sz - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1720
ashleymills 0:714293de3836 1721 XMEMCPY(out, tmp, sz);
ashleymills 0:714293de3836 1722 XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
ashleymills 0:714293de3836 1723 return 0;
ashleymills 0:714293de3836 1724 #else
ashleymills 0:714293de3836 1725 return BAD_ALIGN_E;
ashleymills 0:714293de3836 1726 #endif
ashleymills 0:714293de3836 1727 }
ashleymills 0:714293de3836 1728
ashleymills 0:714293de3836 1729 AES_CBC_encrypt(in, out, (byte*)aes->reg, sz, (byte*)aes->key,
ashleymills 0:714293de3836 1730 aes->rounds);
ashleymills 0:714293de3836 1731 /* store iv for next call */
ashleymills 0:714293de3836 1732 XMEMCPY(aes->reg, out + sz - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1733
ashleymills 0:714293de3836 1734 return 0;
ashleymills 0:714293de3836 1735 }
ashleymills 0:714293de3836 1736 #endif
ashleymills 0:714293de3836 1737
ashleymills 0:714293de3836 1738 while (blocks--) {
ashleymills 0:714293de3836 1739 xorbuf((byte*)aes->reg, in, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1740 AesEncrypt(aes, (byte*)aes->reg, (byte*)aes->reg);
ashleymills 0:714293de3836 1741 XMEMCPY(out, aes->reg, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1742
ashleymills 0:714293de3836 1743 out += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1744 in += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1745 }
ashleymills 0:714293de3836 1746
ashleymills 0:714293de3836 1747 return 0;
ashleymills 0:714293de3836 1748 }
ashleymills 0:714293de3836 1749
ashleymills 0:714293de3836 1750
ashleymills 0:714293de3836 1751 int AesCbcDecrypt(Aes* aes, byte* out, const byte* in, word32 sz)
ashleymills 0:714293de3836 1752 {
ashleymills 0:714293de3836 1753 word32 blocks = sz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1754
ashleymills 0:714293de3836 1755 #ifdef HAVE_CAVIUM
ashleymills 0:714293de3836 1756 if (aes->magic == CYASSL_AES_CAVIUM_MAGIC)
ashleymills 0:714293de3836 1757 return AesCaviumCbcDecrypt(aes, out, in, sz);
ashleymills 0:714293de3836 1758 #endif
ashleymills 0:714293de3836 1759
ashleymills 0:714293de3836 1760 #ifdef CYASSL_AESNI
ashleymills 0:714293de3836 1761 if (haveAESNI) {
ashleymills 0:714293de3836 1762 #ifdef DEBUG_AESNI
ashleymills 0:714293de3836 1763 printf("about to aes cbc decrypt\n");
ashleymills 0:714293de3836 1764 printf("in = %p\n", in);
ashleymills 0:714293de3836 1765 printf("out = %p\n", out);
ashleymills 0:714293de3836 1766 printf("aes->key = %p\n", aes->key);
ashleymills 0:714293de3836 1767 printf("aes->reg = %p\n", aes->reg);
ashleymills 0:714293de3836 1768 printf("aes->rounds = %d\n", aes->rounds);
ashleymills 0:714293de3836 1769 printf("sz = %d\n", sz);
ashleymills 0:714293de3836 1770 #endif
ashleymills 0:714293de3836 1771
ashleymills 0:714293de3836 1772 /* if input and output same will overwrite input iv */
ashleymills 0:714293de3836 1773 XMEMCPY(aes->tmp, in + sz - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1774 AES_CBC_decrypt(in, out, (byte*)aes->reg, sz, (byte*)aes->key,
ashleymills 0:714293de3836 1775 aes->rounds);
ashleymills 0:714293de3836 1776 /* store iv for next call */
ashleymills 0:714293de3836 1777 XMEMCPY(aes->reg, aes->tmp, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1778 return 0;
ashleymills 0:714293de3836 1779 }
ashleymills 0:714293de3836 1780 #endif
ashleymills 0:714293de3836 1781
ashleymills 0:714293de3836 1782 while (blocks--) {
ashleymills 0:714293de3836 1783 XMEMCPY(aes->tmp, in, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1784 AesDecrypt(aes, (byte*)aes->tmp, out);
ashleymills 0:714293de3836 1785 xorbuf(out, (byte*)aes->reg, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1786 XMEMCPY(aes->reg, aes->tmp, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1787
ashleymills 0:714293de3836 1788 out += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1789 in += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1790 }
ashleymills 0:714293de3836 1791
ashleymills 0:714293de3836 1792 return 0;
ashleymills 0:714293de3836 1793 }
ashleymills 0:714293de3836 1794
ashleymills 0:714293de3836 1795
ashleymills 0:714293de3836 1796 #ifdef CYASSL_AES_DIRECT
ashleymills 0:714293de3836 1797
ashleymills 0:714293de3836 1798 /* Allow direct access to one block encrypt */
ashleymills 0:714293de3836 1799 void AesEncryptDirect(Aes* aes, byte* out, const byte* in)
ashleymills 0:714293de3836 1800 {
ashleymills 0:714293de3836 1801 return AesEncrypt(aes, in, out);
ashleymills 0:714293de3836 1802 }
ashleymills 0:714293de3836 1803
ashleymills 0:714293de3836 1804
ashleymills 0:714293de3836 1805 /* Allow direct access to one block decrypt */
ashleymills 0:714293de3836 1806 void AesDecryptDirect(Aes* aes, byte* out, const byte* in)
ashleymills 0:714293de3836 1807 {
ashleymills 0:714293de3836 1808 return AesDecrypt(aes, in, out);
ashleymills 0:714293de3836 1809 }
ashleymills 0:714293de3836 1810
ashleymills 0:714293de3836 1811
ashleymills 0:714293de3836 1812 #endif /* CYASSL_AES_DIRECT */
ashleymills 0:714293de3836 1813
ashleymills 0:714293de3836 1814
ashleymills 0:714293de3836 1815 #if defined(CYASSL_AES_DIRECT) || defined(CYASSL_AES_COUNTER)
ashleymills 0:714293de3836 1816
ashleymills 0:714293de3836 1817 /* AES-CTR and AES-DIRECT need to use this for key setup, no aesni yet */
ashleymills 0:714293de3836 1818 int AesSetKeyDirect(Aes* aes, const byte* userKey, word32 keylen,
ashleymills 0:714293de3836 1819 const byte* iv, int dir)
ashleymills 0:714293de3836 1820 {
ashleymills 0:714293de3836 1821 return AesSetKeyLocal(aes, userKey, keylen, iv, dir);
ashleymills 0:714293de3836 1822 }
ashleymills 0:714293de3836 1823
ashleymills 0:714293de3836 1824 #endif /* CYASSL_AES_DIRECT || CYASSL_AES_COUNTER */
ashleymills 0:714293de3836 1825
ashleymills 0:714293de3836 1826
ashleymills 0:714293de3836 1827 #ifdef CYASSL_AES_COUNTER
ashleymills 0:714293de3836 1828
ashleymills 0:714293de3836 1829 /* Increment AES counter */
ashleymills 0:714293de3836 1830 static INLINE void IncrementAesCounter(byte* inOutCtr)
ashleymills 0:714293de3836 1831 {
ashleymills 0:714293de3836 1832 int i;
ashleymills 0:714293de3836 1833
ashleymills 0:714293de3836 1834 /* in network byte order so start at end and work back */
ashleymills 0:714293de3836 1835 for (i = AES_BLOCK_SIZE - 1; i >= 0; i--) {
ashleymills 0:714293de3836 1836 if (++inOutCtr[i]) /* we're done unless we overflow */
ashleymills 0:714293de3836 1837 return;
ashleymills 0:714293de3836 1838 }
ashleymills 0:714293de3836 1839 }
ashleymills 0:714293de3836 1840
ashleymills 0:714293de3836 1841
ashleymills 0:714293de3836 1842 void AesCtrEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
ashleymills 0:714293de3836 1843 {
ashleymills 0:714293de3836 1844 word32 blocks = sz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1845
ashleymills 0:714293de3836 1846 while (blocks--) {
ashleymills 0:714293de3836 1847 AesEncrypt(aes, (byte*)aes->reg, out);
ashleymills 0:714293de3836 1848 IncrementAesCounter((byte*)aes->reg);
ashleymills 0:714293de3836 1849 xorbuf(out, in, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1850
ashleymills 0:714293de3836 1851 out += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1852 in += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 1853 }
ashleymills 0:714293de3836 1854 }
ashleymills 0:714293de3836 1855
ashleymills 0:714293de3836 1856 #endif /* CYASSL_AES_COUNTER */
ashleymills 0:714293de3836 1857
ashleymills 0:714293de3836 1858
ashleymills 0:714293de3836 1859 #ifdef HAVE_AESGCM
ashleymills 0:714293de3836 1860
ashleymills 0:714293de3836 1861 /*
ashleymills 0:714293de3836 1862 * The IV for AES GCM, stored in struct Aes's member reg, is comprised of
ashleymills 0:714293de3836 1863 * three parts in order:
ashleymills 0:714293de3836 1864 * 1. The implicit IV. This is generated from the PRF using the shared
ashleymills 0:714293de3836 1865 * secrets between endpoints. It is 4 bytes long.
ashleymills 0:714293de3836 1866 * 2. The explicit IV. This is set by the user of the AES. It needs to be
ashleymills 0:714293de3836 1867 * unique for each call to encrypt. The explicit IV is shared with the
ashleymills 0:714293de3836 1868 * other end of the transaction in the clear.
ashleymills 0:714293de3836 1869 * 3. The counter. Each block of data is encrypted with its own sequence
ashleymills 0:714293de3836 1870 * number counter.
ashleymills 0:714293de3836 1871 */
ashleymills 0:714293de3836 1872
ashleymills 0:714293de3836 1873 enum {
ashleymills 0:714293de3836 1874 CTR_SZ = 4
ashleymills 0:714293de3836 1875 };
ashleymills 0:714293de3836 1876
ashleymills 0:714293de3836 1877
ashleymills 0:714293de3836 1878 static INLINE void InitGcmCounter(byte* inOutCtr)
ashleymills 0:714293de3836 1879 {
ashleymills 0:714293de3836 1880 inOutCtr[AES_BLOCK_SIZE - 4] = 0;
ashleymills 0:714293de3836 1881 inOutCtr[AES_BLOCK_SIZE - 3] = 0;
ashleymills 0:714293de3836 1882 inOutCtr[AES_BLOCK_SIZE - 2] = 0;
ashleymills 0:714293de3836 1883 inOutCtr[AES_BLOCK_SIZE - 1] = 1;
ashleymills 0:714293de3836 1884 }
ashleymills 0:714293de3836 1885
ashleymills 0:714293de3836 1886
ashleymills 0:714293de3836 1887 static INLINE void IncrementGcmCounter(byte* inOutCtr)
ashleymills 0:714293de3836 1888 {
ashleymills 0:714293de3836 1889 int i;
ashleymills 0:714293de3836 1890
ashleymills 0:714293de3836 1891 /* in network byte order so start at end and work back */
ashleymills 0:714293de3836 1892 for (i = AES_BLOCK_SIZE - 1; i >= AES_BLOCK_SIZE - CTR_SZ; i--) {
ashleymills 0:714293de3836 1893 if (++inOutCtr[i]) /* we're done unless we overflow */
ashleymills 0:714293de3836 1894 return;
ashleymills 0:714293de3836 1895 }
ashleymills 0:714293de3836 1896 }
ashleymills 0:714293de3836 1897
ashleymills 0:714293de3836 1898
ashleymills 0:714293de3836 1899 #if defined(GCM_SMALL) || defined(GCM_TABLE)
ashleymills 0:714293de3836 1900
ashleymills 0:714293de3836 1901 static INLINE void FlattenSzInBits(byte* buf, word32 sz)
ashleymills 0:714293de3836 1902 {
ashleymills 0:714293de3836 1903 /* Multiply the sz by 8 */
ashleymills 0:714293de3836 1904 word32 szHi = (sz >> (8*sizeof(sz) - 3));
ashleymills 0:714293de3836 1905 sz <<= 3;
ashleymills 0:714293de3836 1906
ashleymills 0:714293de3836 1907 /* copy over the words of the sz into the destination buffer */
ashleymills 0:714293de3836 1908 buf[0] = (szHi >> 24) & 0xff;
ashleymills 0:714293de3836 1909 buf[1] = (szHi >> 16) & 0xff;
ashleymills 0:714293de3836 1910 buf[2] = (szHi >> 8) & 0xff;
ashleymills 0:714293de3836 1911 buf[3] = szHi & 0xff;
ashleymills 0:714293de3836 1912 buf[4] = (sz >> 24) & 0xff;
ashleymills 0:714293de3836 1913 buf[5] = (sz >> 16) & 0xff;
ashleymills 0:714293de3836 1914 buf[6] = (sz >> 8) & 0xff;
ashleymills 0:714293de3836 1915 buf[7] = sz & 0xff;
ashleymills 0:714293de3836 1916 }
ashleymills 0:714293de3836 1917
ashleymills 0:714293de3836 1918
ashleymills 0:714293de3836 1919 static INLINE void RIGHTSHIFTX(byte* x)
ashleymills 0:714293de3836 1920 {
ashleymills 0:714293de3836 1921 int i;
ashleymills 0:714293de3836 1922 int carryOut = 0;
ashleymills 0:714293de3836 1923 int carryIn = 0;
ashleymills 0:714293de3836 1924 int borrow = x[15] & 0x01;
ashleymills 0:714293de3836 1925
ashleymills 0:714293de3836 1926 for (i = 0; i < AES_BLOCK_SIZE; i++) {
ashleymills 0:714293de3836 1927 carryOut = x[i] & 0x01;
ashleymills 0:714293de3836 1928 x[i] = (x[i] >> 1) | (carryIn ? 0x80 : 0);
ashleymills 0:714293de3836 1929 carryIn = carryOut;
ashleymills 0:714293de3836 1930 }
ashleymills 0:714293de3836 1931 if (borrow) x[0] ^= 0xE1;
ashleymills 0:714293de3836 1932 }
ashleymills 0:714293de3836 1933
ashleymills 0:714293de3836 1934 #endif /* defined(GCM_SMALL) || defined(GCM_TABLE) */
ashleymills 0:714293de3836 1935
ashleymills 0:714293de3836 1936
ashleymills 0:714293de3836 1937 #ifdef GCM_TABLE
ashleymills 0:714293de3836 1938
ashleymills 0:714293de3836 1939 static void GenerateM0(Aes* aes)
ashleymills 0:714293de3836 1940 {
ashleymills 0:714293de3836 1941 int i, j;
ashleymills 0:714293de3836 1942 byte (*m)[AES_BLOCK_SIZE] = aes->M0;
ashleymills 0:714293de3836 1943
ashleymills 0:714293de3836 1944 XMEMCPY(m[128], aes->H, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1945
ashleymills 0:714293de3836 1946 for (i = 64; i > 0; i /= 2) {
ashleymills 0:714293de3836 1947 XMEMCPY(m[i], m[i*2], AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1948 RIGHTSHIFTX(m[i]);
ashleymills 0:714293de3836 1949 }
ashleymills 0:714293de3836 1950
ashleymills 0:714293de3836 1951 for (i = 2; i < 256; i *= 2) {
ashleymills 0:714293de3836 1952 for (j = 1; j < i; j++) {
ashleymills 0:714293de3836 1953 XMEMCPY(m[i+j], m[i], AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1954 xorbuf(m[i+j], m[j], AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1955 }
ashleymills 0:714293de3836 1956 }
ashleymills 0:714293de3836 1957
ashleymills 0:714293de3836 1958 XMEMSET(m[0], 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1959 }
ashleymills 0:714293de3836 1960
ashleymills 0:714293de3836 1961 #endif /* GCM_TABLE */
ashleymills 0:714293de3836 1962
ashleymills 0:714293de3836 1963
ashleymills 0:714293de3836 1964 void AesGcmSetKey(Aes* aes, const byte* key, word32 len)
ashleymills 0:714293de3836 1965 {
ashleymills 0:714293de3836 1966 byte iv[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 1967
ashleymills 0:714293de3836 1968 if (!((len == 16) || (len == 24) || (len == 32)))
ashleymills 0:714293de3836 1969 return;
ashleymills 0:714293de3836 1970
ashleymills 0:714293de3836 1971 XMEMSET(iv, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1972 AesSetKeyLocal(aes, key, len, iv, AES_ENCRYPTION);
ashleymills 0:714293de3836 1973
ashleymills 0:714293de3836 1974 AesEncrypt(aes, iv, aes->H);
ashleymills 0:714293de3836 1975 #ifdef GCM_TABLE
ashleymills 0:714293de3836 1976 GenerateM0(aes);
ashleymills 0:714293de3836 1977 #endif /* GCM_TABLE */
ashleymills 0:714293de3836 1978 }
ashleymills 0:714293de3836 1979
ashleymills 0:714293de3836 1980
ashleymills 0:714293de3836 1981 #if defined(GCM_SMALL)
ashleymills 0:714293de3836 1982
ashleymills 0:714293de3836 1983 static void GMULT(byte* X, byte* Y)
ashleymills 0:714293de3836 1984 {
ashleymills 0:714293de3836 1985 byte Z[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 1986 byte V[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 1987 int i, j;
ashleymills 0:714293de3836 1988
ashleymills 0:714293de3836 1989 XMEMSET(Z, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1990 XMEMCPY(V, X, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1991 for (i = 0; i < AES_BLOCK_SIZE; i++)
ashleymills 0:714293de3836 1992 {
ashleymills 0:714293de3836 1993 byte y = Y[i];
ashleymills 0:714293de3836 1994 for (j = 0; j < 8; j++)
ashleymills 0:714293de3836 1995 {
ashleymills 0:714293de3836 1996 if (y & 0x80) {
ashleymills 0:714293de3836 1997 xorbuf(Z, V, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 1998 }
ashleymills 0:714293de3836 1999
ashleymills 0:714293de3836 2000 RIGHTSHIFTX(V);
ashleymills 0:714293de3836 2001 y = y << 1;
ashleymills 0:714293de3836 2002 }
ashleymills 0:714293de3836 2003 }
ashleymills 0:714293de3836 2004 XMEMCPY(X, Z, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2005 }
ashleymills 0:714293de3836 2006
ashleymills 0:714293de3836 2007
ashleymills 0:714293de3836 2008 static void GHASH(Aes* aes, const byte* a, word32 aSz,
ashleymills 0:714293de3836 2009 const byte* c, word32 cSz, byte* s, word32 sSz)
ashleymills 0:714293de3836 2010 {
ashleymills 0:714293de3836 2011 byte x[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2012 byte scratch[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2013 word32 blocks, partial;
ashleymills 0:714293de3836 2014 byte* h = aes->H;
ashleymills 0:714293de3836 2015
ashleymills 0:714293de3836 2016 XMEMSET(x, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2017
ashleymills 0:714293de3836 2018 /* Hash in A, the Additional Authentication Data */
ashleymills 0:714293de3836 2019 if (aSz != 0 && a != NULL) {
ashleymills 0:714293de3836 2020 blocks = aSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2021 partial = aSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2022 while (blocks--) {
ashleymills 0:714293de3836 2023 xorbuf(x, a, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2024 GMULT(x, h);
ashleymills 0:714293de3836 2025 a += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2026 }
ashleymills 0:714293de3836 2027 if (partial != 0) {
ashleymills 0:714293de3836 2028 XMEMSET(scratch, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2029 XMEMCPY(scratch, a, partial);
ashleymills 0:714293de3836 2030 xorbuf(x, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2031 GMULT(x, h);
ashleymills 0:714293de3836 2032 }
ashleymills 0:714293de3836 2033 }
ashleymills 0:714293de3836 2034
ashleymills 0:714293de3836 2035 /* Hash in C, the Ciphertext */
ashleymills 0:714293de3836 2036 if (cSz != 0 && c != NULL) {
ashleymills 0:714293de3836 2037 blocks = cSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2038 partial = cSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2039 while (blocks--) {
ashleymills 0:714293de3836 2040 xorbuf(x, c, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2041 GMULT(x, h);
ashleymills 0:714293de3836 2042 c += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2043 }
ashleymills 0:714293de3836 2044 if (partial != 0) {
ashleymills 0:714293de3836 2045 XMEMSET(scratch, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2046 XMEMCPY(scratch, c, partial);
ashleymills 0:714293de3836 2047 xorbuf(x, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2048 GMULT(x, h);
ashleymills 0:714293de3836 2049 }
ashleymills 0:714293de3836 2050 }
ashleymills 0:714293de3836 2051
ashleymills 0:714293de3836 2052 /* Hash in the lengths of A and C in bits */
ashleymills 0:714293de3836 2053 FlattenSzInBits(&scratch[0], aSz);
ashleymills 0:714293de3836 2054 FlattenSzInBits(&scratch[8], cSz);
ashleymills 0:714293de3836 2055 xorbuf(x, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2056 GMULT(x, h);
ashleymills 0:714293de3836 2057
ashleymills 0:714293de3836 2058 /* Copy the result into s. */
ashleymills 0:714293de3836 2059 XMEMCPY(s, x, sSz);
ashleymills 0:714293de3836 2060 }
ashleymills 0:714293de3836 2061
ashleymills 0:714293de3836 2062 /* end GCM_SMALL */
ashleymills 0:714293de3836 2063 #elif defined(GCM_TABLE)
ashleymills 0:714293de3836 2064
ashleymills 0:714293de3836 2065 static const byte R[256][2] = {
ashleymills 0:714293de3836 2066 {0x00, 0x00}, {0x01, 0xc2}, {0x03, 0x84}, {0x02, 0x46},
ashleymills 0:714293de3836 2067 {0x07, 0x08}, {0x06, 0xca}, {0x04, 0x8c}, {0x05, 0x4e},
ashleymills 0:714293de3836 2068 {0x0e, 0x10}, {0x0f, 0xd2}, {0x0d, 0x94}, {0x0c, 0x56},
ashleymills 0:714293de3836 2069 {0x09, 0x18}, {0x08, 0xda}, {0x0a, 0x9c}, {0x0b, 0x5e},
ashleymills 0:714293de3836 2070 {0x1c, 0x20}, {0x1d, 0xe2}, {0x1f, 0xa4}, {0x1e, 0x66},
ashleymills 0:714293de3836 2071 {0x1b, 0x28}, {0x1a, 0xea}, {0x18, 0xac}, {0x19, 0x6e},
ashleymills 0:714293de3836 2072 {0x12, 0x30}, {0x13, 0xf2}, {0x11, 0xb4}, {0x10, 0x76},
ashleymills 0:714293de3836 2073 {0x15, 0x38}, {0x14, 0xfa}, {0x16, 0xbc}, {0x17, 0x7e},
ashleymills 0:714293de3836 2074 {0x38, 0x40}, {0x39, 0x82}, {0x3b, 0xc4}, {0x3a, 0x06},
ashleymills 0:714293de3836 2075 {0x3f, 0x48}, {0x3e, 0x8a}, {0x3c, 0xcc}, {0x3d, 0x0e},
ashleymills 0:714293de3836 2076 {0x36, 0x50}, {0x37, 0x92}, {0x35, 0xd4}, {0x34, 0x16},
ashleymills 0:714293de3836 2077 {0x31, 0x58}, {0x30, 0x9a}, {0x32, 0xdc}, {0x33, 0x1e},
ashleymills 0:714293de3836 2078 {0x24, 0x60}, {0x25, 0xa2}, {0x27, 0xe4}, {0x26, 0x26},
ashleymills 0:714293de3836 2079 {0x23, 0x68}, {0x22, 0xaa}, {0x20, 0xec}, {0x21, 0x2e},
ashleymills 0:714293de3836 2080 {0x2a, 0x70}, {0x2b, 0xb2}, {0x29, 0xf4}, {0x28, 0x36},
ashleymills 0:714293de3836 2081 {0x2d, 0x78}, {0x2c, 0xba}, {0x2e, 0xfc}, {0x2f, 0x3e},
ashleymills 0:714293de3836 2082 {0x70, 0x80}, {0x71, 0x42}, {0x73, 0x04}, {0x72, 0xc6},
ashleymills 0:714293de3836 2083 {0x77, 0x88}, {0x76, 0x4a}, {0x74, 0x0c}, {0x75, 0xce},
ashleymills 0:714293de3836 2084 {0x7e, 0x90}, {0x7f, 0x52}, {0x7d, 0x14}, {0x7c, 0xd6},
ashleymills 0:714293de3836 2085 {0x79, 0x98}, {0x78, 0x5a}, {0x7a, 0x1c}, {0x7b, 0xde},
ashleymills 0:714293de3836 2086 {0x6c, 0xa0}, {0x6d, 0x62}, {0x6f, 0x24}, {0x6e, 0xe6},
ashleymills 0:714293de3836 2087 {0x6b, 0xa8}, {0x6a, 0x6a}, {0x68, 0x2c}, {0x69, 0xee},
ashleymills 0:714293de3836 2088 {0x62, 0xb0}, {0x63, 0x72}, {0x61, 0x34}, {0x60, 0xf6},
ashleymills 0:714293de3836 2089 {0x65, 0xb8}, {0x64, 0x7a}, {0x66, 0x3c}, {0x67, 0xfe},
ashleymills 0:714293de3836 2090 {0x48, 0xc0}, {0x49, 0x02}, {0x4b, 0x44}, {0x4a, 0x86},
ashleymills 0:714293de3836 2091 {0x4f, 0xc8}, {0x4e, 0x0a}, {0x4c, 0x4c}, {0x4d, 0x8e},
ashleymills 0:714293de3836 2092 {0x46, 0xd0}, {0x47, 0x12}, {0x45, 0x54}, {0x44, 0x96},
ashleymills 0:714293de3836 2093 {0x41, 0xd8}, {0x40, 0x1a}, {0x42, 0x5c}, {0x43, 0x9e},
ashleymills 0:714293de3836 2094 {0x54, 0xe0}, {0x55, 0x22}, {0x57, 0x64}, {0x56, 0xa6},
ashleymills 0:714293de3836 2095 {0x53, 0xe8}, {0x52, 0x2a}, {0x50, 0x6c}, {0x51, 0xae},
ashleymills 0:714293de3836 2096 {0x5a, 0xf0}, {0x5b, 0x32}, {0x59, 0x74}, {0x58, 0xb6},
ashleymills 0:714293de3836 2097 {0x5d, 0xf8}, {0x5c, 0x3a}, {0x5e, 0x7c}, {0x5f, 0xbe},
ashleymills 0:714293de3836 2098 {0xe1, 0x00}, {0xe0, 0xc2}, {0xe2, 0x84}, {0xe3, 0x46},
ashleymills 0:714293de3836 2099 {0xe6, 0x08}, {0xe7, 0xca}, {0xe5, 0x8c}, {0xe4, 0x4e},
ashleymills 0:714293de3836 2100 {0xef, 0x10}, {0xee, 0xd2}, {0xec, 0x94}, {0xed, 0x56},
ashleymills 0:714293de3836 2101 {0xe8, 0x18}, {0xe9, 0xda}, {0xeb, 0x9c}, {0xea, 0x5e},
ashleymills 0:714293de3836 2102 {0xfd, 0x20}, {0xfc, 0xe2}, {0xfe, 0xa4}, {0xff, 0x66},
ashleymills 0:714293de3836 2103 {0xfa, 0x28}, {0xfb, 0xea}, {0xf9, 0xac}, {0xf8, 0x6e},
ashleymills 0:714293de3836 2104 {0xf3, 0x30}, {0xf2, 0xf2}, {0xf0, 0xb4}, {0xf1, 0x76},
ashleymills 0:714293de3836 2105 {0xf4, 0x38}, {0xf5, 0xfa}, {0xf7, 0xbc}, {0xf6, 0x7e},
ashleymills 0:714293de3836 2106 {0xd9, 0x40}, {0xd8, 0x82}, {0xda, 0xc4}, {0xdb, 0x06},
ashleymills 0:714293de3836 2107 {0xde, 0x48}, {0xdf, 0x8a}, {0xdd, 0xcc}, {0xdc, 0x0e},
ashleymills 0:714293de3836 2108 {0xd7, 0x50}, {0xd6, 0x92}, {0xd4, 0xd4}, {0xd5, 0x16},
ashleymills 0:714293de3836 2109 {0xd0, 0x58}, {0xd1, 0x9a}, {0xd3, 0xdc}, {0xd2, 0x1e},
ashleymills 0:714293de3836 2110 {0xc5, 0x60}, {0xc4, 0xa2}, {0xc6, 0xe4}, {0xc7, 0x26},
ashleymills 0:714293de3836 2111 {0xc2, 0x68}, {0xc3, 0xaa}, {0xc1, 0xec}, {0xc0, 0x2e},
ashleymills 0:714293de3836 2112 {0xcb, 0x70}, {0xca, 0xb2}, {0xc8, 0xf4}, {0xc9, 0x36},
ashleymills 0:714293de3836 2113 {0xcc, 0x78}, {0xcd, 0xba}, {0xcf, 0xfc}, {0xce, 0x3e},
ashleymills 0:714293de3836 2114 {0x91, 0x80}, {0x90, 0x42}, {0x92, 0x04}, {0x93, 0xc6},
ashleymills 0:714293de3836 2115 {0x96, 0x88}, {0x97, 0x4a}, {0x95, 0x0c}, {0x94, 0xce},
ashleymills 0:714293de3836 2116 {0x9f, 0x90}, {0x9e, 0x52}, {0x9c, 0x14}, {0x9d, 0xd6},
ashleymills 0:714293de3836 2117 {0x98, 0x98}, {0x99, 0x5a}, {0x9b, 0x1c}, {0x9a, 0xde},
ashleymills 0:714293de3836 2118 {0x8d, 0xa0}, {0x8c, 0x62}, {0x8e, 0x24}, {0x8f, 0xe6},
ashleymills 0:714293de3836 2119 {0x8a, 0xa8}, {0x8b, 0x6a}, {0x89, 0x2c}, {0x88, 0xee},
ashleymills 0:714293de3836 2120 {0x83, 0xb0}, {0x82, 0x72}, {0x80, 0x34}, {0x81, 0xf6},
ashleymills 0:714293de3836 2121 {0x84, 0xb8}, {0x85, 0x7a}, {0x87, 0x3c}, {0x86, 0xfe},
ashleymills 0:714293de3836 2122 {0xa9, 0xc0}, {0xa8, 0x02}, {0xaa, 0x44}, {0xab, 0x86},
ashleymills 0:714293de3836 2123 {0xae, 0xc8}, {0xaf, 0x0a}, {0xad, 0x4c}, {0xac, 0x8e},
ashleymills 0:714293de3836 2124 {0xa7, 0xd0}, {0xa6, 0x12}, {0xa4, 0x54}, {0xa5, 0x96},
ashleymills 0:714293de3836 2125 {0xa0, 0xd8}, {0xa1, 0x1a}, {0xa3, 0x5c}, {0xa2, 0x9e},
ashleymills 0:714293de3836 2126 {0xb5, 0xe0}, {0xb4, 0x22}, {0xb6, 0x64}, {0xb7, 0xa6},
ashleymills 0:714293de3836 2127 {0xb2, 0xe8}, {0xb3, 0x2a}, {0xb1, 0x6c}, {0xb0, 0xae},
ashleymills 0:714293de3836 2128 {0xbb, 0xf0}, {0xba, 0x32}, {0xb8, 0x74}, {0xb9, 0xb6},
ashleymills 0:714293de3836 2129 {0xbc, 0xf8}, {0xbd, 0x3a}, {0xbf, 0x7c}, {0xbe, 0xbe} };
ashleymills 0:714293de3836 2130
ashleymills 0:714293de3836 2131
ashleymills 0:714293de3836 2132 static void GMULT(byte *x, byte m[256][AES_BLOCK_SIZE])
ashleymills 0:714293de3836 2133 {
ashleymills 0:714293de3836 2134 int i, j;
ashleymills 0:714293de3836 2135 byte Z[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2136 byte a;
ashleymills 0:714293de3836 2137
ashleymills 0:714293de3836 2138 XMEMSET(Z, 0, sizeof(Z));
ashleymills 0:714293de3836 2139
ashleymills 0:714293de3836 2140 for (i = 15; i > 0; i--) {
ashleymills 0:714293de3836 2141 xorbuf(Z, m[x[i]], AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2142 a = Z[15];
ashleymills 0:714293de3836 2143
ashleymills 0:714293de3836 2144 for (j = 15; j > 0; j--) {
ashleymills 0:714293de3836 2145 Z[j] = Z[j-1];
ashleymills 0:714293de3836 2146 }
ashleymills 0:714293de3836 2147
ashleymills 0:714293de3836 2148 Z[0] = R[a][0];
ashleymills 0:714293de3836 2149 Z[1] ^= R[a][1];
ashleymills 0:714293de3836 2150 }
ashleymills 0:714293de3836 2151 xorbuf(Z, m[x[0]], AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2152
ashleymills 0:714293de3836 2153 XMEMCPY(x, Z, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2154 }
ashleymills 0:714293de3836 2155
ashleymills 0:714293de3836 2156
ashleymills 0:714293de3836 2157 static void GHASH(Aes* aes, const byte* a, word32 aSz,
ashleymills 0:714293de3836 2158 const byte* c, word32 cSz, byte* s, word32 sSz)
ashleymills 0:714293de3836 2159 {
ashleymills 0:714293de3836 2160 byte x[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2161 byte scratch[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2162 word32 blocks, partial;
ashleymills 0:714293de3836 2163
ashleymills 0:714293de3836 2164 XMEMSET(x, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2165
ashleymills 0:714293de3836 2166 /* Hash in A, the Additional Authentication Data */
ashleymills 0:714293de3836 2167 if (aSz != 0 && a != NULL) {
ashleymills 0:714293de3836 2168 blocks = aSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2169 partial = aSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2170 while (blocks--) {
ashleymills 0:714293de3836 2171 xorbuf(x, a, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2172 GMULT(x, aes->M0);
ashleymills 0:714293de3836 2173 a += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2174 }
ashleymills 0:714293de3836 2175 if (partial != 0) {
ashleymills 0:714293de3836 2176 XMEMSET(scratch, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2177 XMEMCPY(scratch, a, partial);
ashleymills 0:714293de3836 2178 xorbuf(x, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2179 GMULT(x, aes->M0);
ashleymills 0:714293de3836 2180 }
ashleymills 0:714293de3836 2181 }
ashleymills 0:714293de3836 2182
ashleymills 0:714293de3836 2183 /* Hash in C, the Ciphertext */
ashleymills 0:714293de3836 2184 if (cSz != 0 && c != NULL) {
ashleymills 0:714293de3836 2185 blocks = cSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2186 partial = cSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2187 while (blocks--) {
ashleymills 0:714293de3836 2188 xorbuf(x, c, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2189 GMULT(x, aes->M0);
ashleymills 0:714293de3836 2190 c += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2191 }
ashleymills 0:714293de3836 2192 if (partial != 0) {
ashleymills 0:714293de3836 2193 XMEMSET(scratch, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2194 XMEMCPY(scratch, c, partial);
ashleymills 0:714293de3836 2195 xorbuf(x, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2196 GMULT(x, aes->M0);
ashleymills 0:714293de3836 2197 }
ashleymills 0:714293de3836 2198 }
ashleymills 0:714293de3836 2199
ashleymills 0:714293de3836 2200 /* Hash in the lengths of A and C in bits */
ashleymills 0:714293de3836 2201 FlattenSzInBits(&scratch[0], aSz);
ashleymills 0:714293de3836 2202 FlattenSzInBits(&scratch[8], cSz);
ashleymills 0:714293de3836 2203 xorbuf(x, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2204 GMULT(x, aes->M0);
ashleymills 0:714293de3836 2205
ashleymills 0:714293de3836 2206 /* Copy the result into s. */
ashleymills 0:714293de3836 2207 XMEMCPY(s, x, sSz);
ashleymills 0:714293de3836 2208 }
ashleymills 0:714293de3836 2209
ashleymills 0:714293de3836 2210 /* end GCM_TABLE */
ashleymills 0:714293de3836 2211 #elif defined(WORD64_AVAILABLE) && !defined(GCM_WORD32)
ashleymills 0:714293de3836 2212
ashleymills 0:714293de3836 2213 static void GMULT(word64* X, word64* Y)
ashleymills 0:714293de3836 2214 {
ashleymills 0:714293de3836 2215 word64 Z[2] = {0,0};
ashleymills 0:714293de3836 2216 word64 V[2] ;
ashleymills 0:714293de3836 2217 int i, j;
ashleymills 0:714293de3836 2218 V[0] = X[0] ; V[1] = X[1] ;
ashleymills 0:714293de3836 2219
ashleymills 0:714293de3836 2220 for (i = 0; i < 2; i++)
ashleymills 0:714293de3836 2221 {
ashleymills 0:714293de3836 2222 word64 y = Y[i];
ashleymills 0:714293de3836 2223 for (j = 0; j < 64; j++)
ashleymills 0:714293de3836 2224 {
ashleymills 0:714293de3836 2225 if (y & 0x8000000000000000) {
ashleymills 0:714293de3836 2226 Z[0] ^= V[0];
ashleymills 0:714293de3836 2227 Z[1] ^= V[1];
ashleymills 0:714293de3836 2228 }
ashleymills 0:714293de3836 2229
ashleymills 0:714293de3836 2230 if (V[1] & 0x0000000000000001) {
ashleymills 0:714293de3836 2231 V[1] >>= 1;
ashleymills 0:714293de3836 2232 V[1] |= ((V[0] & 0x0000000000000001) ? 0x8000000000000000 : 0);
ashleymills 0:714293de3836 2233 V[0] >>= 1;
ashleymills 0:714293de3836 2234 V[0] ^= 0xE100000000000000;
ashleymills 0:714293de3836 2235 }
ashleymills 0:714293de3836 2236 else {
ashleymills 0:714293de3836 2237 V[1] >>= 1;
ashleymills 0:714293de3836 2238 V[1] |= ((V[0] & 0x0000000000000001) ? 0x8000000000000000 : 0);
ashleymills 0:714293de3836 2239 V[0] >>= 1;
ashleymills 0:714293de3836 2240 }
ashleymills 0:714293de3836 2241 y <<= 1;
ashleymills 0:714293de3836 2242 }
ashleymills 0:714293de3836 2243 }
ashleymills 0:714293de3836 2244 X[0] = Z[0];
ashleymills 0:714293de3836 2245 X[1] = Z[1];
ashleymills 0:714293de3836 2246 }
ashleymills 0:714293de3836 2247
ashleymills 0:714293de3836 2248
ashleymills 0:714293de3836 2249 static void GHASH(Aes* aes, const byte* a, word32 aSz,
ashleymills 0:714293de3836 2250 const byte* c, word32 cSz, byte* s, word32 sSz)
ashleymills 0:714293de3836 2251 {
ashleymills 0:714293de3836 2252 word64 x[2] = {0,0};
ashleymills 0:714293de3836 2253 word32 blocks, partial;
ashleymills 0:714293de3836 2254 word64 bigH[2];
ashleymills 0:714293de3836 2255
ashleymills 0:714293de3836 2256 XMEMCPY(bigH, aes->H, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2257 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2258 ByteReverseWords64(bigH, bigH, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2259 #endif
ashleymills 0:714293de3836 2260
ashleymills 0:714293de3836 2261 /* Hash in A, the Additional Authentication Data */
ashleymills 0:714293de3836 2262 if (aSz != 0 && a != NULL) {
ashleymills 0:714293de3836 2263 word64 bigA[2];
ashleymills 0:714293de3836 2264 blocks = aSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2265 partial = aSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2266 while (blocks--) {
ashleymills 0:714293de3836 2267 XMEMCPY(bigA, a, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2268 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2269 ByteReverseWords64(bigA, bigA, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2270 #endif
ashleymills 0:714293de3836 2271 x[0] ^= bigA[0];
ashleymills 0:714293de3836 2272 x[1] ^= bigA[1];
ashleymills 0:714293de3836 2273 GMULT(x, bigH);
ashleymills 0:714293de3836 2274 a += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2275 }
ashleymills 0:714293de3836 2276 if (partial != 0) {
ashleymills 0:714293de3836 2277 XMEMSET(bigA, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2278 XMEMCPY(bigA, a, partial);
ashleymills 0:714293de3836 2279 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2280 ByteReverseWords64(bigA, bigA, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2281 #endif
ashleymills 0:714293de3836 2282 x[0] ^= bigA[0];
ashleymills 0:714293de3836 2283 x[1] ^= bigA[1];
ashleymills 0:714293de3836 2284 GMULT(x, bigH);
ashleymills 0:714293de3836 2285 }
ashleymills 0:714293de3836 2286 }
ashleymills 0:714293de3836 2287
ashleymills 0:714293de3836 2288 /* Hash in C, the Ciphertext */
ashleymills 0:714293de3836 2289 if (cSz != 0 && c != NULL) {
ashleymills 0:714293de3836 2290 word64 bigC[2];
ashleymills 0:714293de3836 2291 blocks = cSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2292 partial = cSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2293 while (blocks--) {
ashleymills 0:714293de3836 2294 XMEMCPY(bigC, c, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2295 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2296 ByteReverseWords64(bigC, bigC, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2297 #endif
ashleymills 0:714293de3836 2298 x[0] ^= bigC[0];
ashleymills 0:714293de3836 2299 x[1] ^= bigC[1];
ashleymills 0:714293de3836 2300 GMULT(x, bigH);
ashleymills 0:714293de3836 2301 c += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2302 }
ashleymills 0:714293de3836 2303 if (partial != 0) {
ashleymills 0:714293de3836 2304 XMEMSET(bigC, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2305 XMEMCPY(bigC, c, partial);
ashleymills 0:714293de3836 2306 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2307 ByteReverseWords64(bigC, bigC, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2308 #endif
ashleymills 0:714293de3836 2309 x[0] ^= bigC[0];
ashleymills 0:714293de3836 2310 x[1] ^= bigC[1];
ashleymills 0:714293de3836 2311 GMULT(x, bigH);
ashleymills 0:714293de3836 2312 }
ashleymills 0:714293de3836 2313 }
ashleymills 0:714293de3836 2314
ashleymills 0:714293de3836 2315 /* Hash in the lengths in bits of A and C */
ashleymills 0:714293de3836 2316 {
ashleymills 0:714293de3836 2317 word64 len[2] ;
ashleymills 0:714293de3836 2318 len[0] = aSz ; len[1] = cSz;
ashleymills 0:714293de3836 2319
ashleymills 0:714293de3836 2320 /* Lengths are in bytes. Convert to bits. */
ashleymills 0:714293de3836 2321 len[0] *= 8;
ashleymills 0:714293de3836 2322 len[1] *= 8;
ashleymills 0:714293de3836 2323
ashleymills 0:714293de3836 2324 x[0] ^= len[0];
ashleymills 0:714293de3836 2325 x[1] ^= len[1];
ashleymills 0:714293de3836 2326 GMULT(x, bigH);
ashleymills 0:714293de3836 2327 }
ashleymills 0:714293de3836 2328 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2329 ByteReverseWords64(x, x, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2330 #endif
ashleymills 0:714293de3836 2331 XMEMCPY(s, x, sSz);
ashleymills 0:714293de3836 2332 }
ashleymills 0:714293de3836 2333
ashleymills 0:714293de3836 2334 /* end defined(WORD64_AVAILABLE) && !defined(GCM_WORD32) */
ashleymills 0:714293de3836 2335 #else /* GCM_WORD32 */
ashleymills 0:714293de3836 2336
ashleymills 0:714293de3836 2337 static void GMULT(word32* X, word32* Y)
ashleymills 0:714293de3836 2338 {
ashleymills 0:714293de3836 2339 word32 Z[4] = {0,0,0,0};
ashleymills 0:714293de3836 2340 word32 V[4] ;
ashleymills 0:714293de3836 2341 int i, j;
ashleymills 0:714293de3836 2342
ashleymills 0:714293de3836 2343 V[0] = X[0]; V[1] = X[1]; V[2] = X[2]; V[3] = X[3];
ashleymills 0:714293de3836 2344
ashleymills 0:714293de3836 2345 for (i = 0; i < 4; i++)
ashleymills 0:714293de3836 2346 {
ashleymills 0:714293de3836 2347 word32 y = Y[i];
ashleymills 0:714293de3836 2348 for (j = 0; j < 32; j++)
ashleymills 0:714293de3836 2349 {
ashleymills 0:714293de3836 2350 if (y & 0x80000000) {
ashleymills 0:714293de3836 2351 Z[0] ^= V[0];
ashleymills 0:714293de3836 2352 Z[1] ^= V[1];
ashleymills 0:714293de3836 2353 Z[2] ^= V[2];
ashleymills 0:714293de3836 2354 Z[3] ^= V[3];
ashleymills 0:714293de3836 2355 }
ashleymills 0:714293de3836 2356
ashleymills 0:714293de3836 2357 if (V[3] & 0x00000001) {
ashleymills 0:714293de3836 2358 V[3] >>= 1;
ashleymills 0:714293de3836 2359 V[3] |= ((V[2] & 0x00000001) ? 0x80000000 : 0);
ashleymills 0:714293de3836 2360 V[2] >>= 1;
ashleymills 0:714293de3836 2361 V[2] |= ((V[1] & 0x00000001) ? 0x80000000 : 0);
ashleymills 0:714293de3836 2362 V[1] >>= 1;
ashleymills 0:714293de3836 2363 V[1] |= ((V[0] & 0x00000001) ? 0x80000000 : 0);
ashleymills 0:714293de3836 2364 V[0] >>= 1;
ashleymills 0:714293de3836 2365 V[0] ^= 0xE1000000;
ashleymills 0:714293de3836 2366 } else {
ashleymills 0:714293de3836 2367 V[3] >>= 1;
ashleymills 0:714293de3836 2368 V[3] |= ((V[2] & 0x00000001) ? 0x80000000 : 0);
ashleymills 0:714293de3836 2369 V[2] >>= 1;
ashleymills 0:714293de3836 2370 V[2] |= ((V[1] & 0x00000001) ? 0x80000000 : 0);
ashleymills 0:714293de3836 2371 V[1] >>= 1;
ashleymills 0:714293de3836 2372 V[1] |= ((V[0] & 0x00000001) ? 0x80000000 : 0);
ashleymills 0:714293de3836 2373 V[0] >>= 1;
ashleymills 0:714293de3836 2374 }
ashleymills 0:714293de3836 2375 y <<= 1;
ashleymills 0:714293de3836 2376 }
ashleymills 0:714293de3836 2377 }
ashleymills 0:714293de3836 2378 X[0] = Z[0];
ashleymills 0:714293de3836 2379 X[1] = Z[1];
ashleymills 0:714293de3836 2380 X[2] = Z[2];
ashleymills 0:714293de3836 2381 X[3] = Z[3];
ashleymills 0:714293de3836 2382 }
ashleymills 0:714293de3836 2383
ashleymills 0:714293de3836 2384
ashleymills 0:714293de3836 2385 static void GHASH(Aes* aes, const byte* a, word32 aSz,
ashleymills 0:714293de3836 2386 const byte* c, word32 cSz, byte* s, word32 sSz)
ashleymills 0:714293de3836 2387 {
ashleymills 0:714293de3836 2388 word32 x[4] = {0,0,0,0};
ashleymills 0:714293de3836 2389 word32 blocks, partial;
ashleymills 0:714293de3836 2390 word32 bigH[4];
ashleymills 0:714293de3836 2391
ashleymills 0:714293de3836 2392 XMEMCPY(bigH, aes->H, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2393 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2394 ByteReverseWords(bigH, bigH, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2395 #endif
ashleymills 0:714293de3836 2396
ashleymills 0:714293de3836 2397 /* Hash in A, the Additional Authentication Data */
ashleymills 0:714293de3836 2398 if (aSz != 0 && a != NULL) {
ashleymills 0:714293de3836 2399 word32 bigA[4];
ashleymills 0:714293de3836 2400 blocks = aSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2401 partial = aSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2402 while (blocks--) {
ashleymills 0:714293de3836 2403 XMEMCPY(bigA, a, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2404 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2405 ByteReverseWords(bigA, bigA, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2406 #endif
ashleymills 0:714293de3836 2407 x[0] ^= bigA[0];
ashleymills 0:714293de3836 2408 x[1] ^= bigA[1];
ashleymills 0:714293de3836 2409 x[2] ^= bigA[2];
ashleymills 0:714293de3836 2410 x[3] ^= bigA[3];
ashleymills 0:714293de3836 2411 GMULT(x, bigH);
ashleymills 0:714293de3836 2412 a += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2413 }
ashleymills 0:714293de3836 2414 if (partial != 0) {
ashleymills 0:714293de3836 2415 XMEMSET(bigA, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2416 XMEMCPY(bigA, a, partial);
ashleymills 0:714293de3836 2417 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2418 ByteReverseWords(bigA, bigA, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2419 #endif
ashleymills 0:714293de3836 2420 x[0] ^= bigA[0];
ashleymills 0:714293de3836 2421 x[1] ^= bigA[1];
ashleymills 0:714293de3836 2422 x[2] ^= bigA[2];
ashleymills 0:714293de3836 2423 x[3] ^= bigA[3];
ashleymills 0:714293de3836 2424 GMULT(x, bigH);
ashleymills 0:714293de3836 2425 }
ashleymills 0:714293de3836 2426 }
ashleymills 0:714293de3836 2427
ashleymills 0:714293de3836 2428 /* Hash in C, the Ciphertext */
ashleymills 0:714293de3836 2429 if (cSz != 0 && c != NULL) {
ashleymills 0:714293de3836 2430 word32 bigC[4];
ashleymills 0:714293de3836 2431 blocks = cSz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2432 partial = cSz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2433 while (blocks--) {
ashleymills 0:714293de3836 2434 XMEMCPY(bigC, c, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2435 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2436 ByteReverseWords(bigC, bigC, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2437 #endif
ashleymills 0:714293de3836 2438 x[0] ^= bigC[0];
ashleymills 0:714293de3836 2439 x[1] ^= bigC[1];
ashleymills 0:714293de3836 2440 x[2] ^= bigC[2];
ashleymills 0:714293de3836 2441 x[3] ^= bigC[3];
ashleymills 0:714293de3836 2442 GMULT(x, bigH);
ashleymills 0:714293de3836 2443 c += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2444 }
ashleymills 0:714293de3836 2445 if (partial != 0) {
ashleymills 0:714293de3836 2446 XMEMSET(bigC, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2447 XMEMCPY(bigC, c, partial);
ashleymills 0:714293de3836 2448 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2449 ByteReverseWords(bigC, bigC, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2450 #endif
ashleymills 0:714293de3836 2451 x[0] ^= bigC[0];
ashleymills 0:714293de3836 2452 x[1] ^= bigC[1];
ashleymills 0:714293de3836 2453 x[2] ^= bigC[2];
ashleymills 0:714293de3836 2454 x[3] ^= bigC[3];
ashleymills 0:714293de3836 2455 GMULT(x, bigH);
ashleymills 0:714293de3836 2456 }
ashleymills 0:714293de3836 2457 }
ashleymills 0:714293de3836 2458
ashleymills 0:714293de3836 2459 /* Hash in the lengths in bits of A and C */
ashleymills 0:714293de3836 2460 {
ashleymills 0:714293de3836 2461 word32 len[4];
ashleymills 0:714293de3836 2462
ashleymills 0:714293de3836 2463 /* Lengths are in bytes. Convert to bits. */
ashleymills 0:714293de3836 2464 len[0] = (aSz >> (8*sizeof(aSz) - 3));
ashleymills 0:714293de3836 2465 len[1] = aSz << 3;
ashleymills 0:714293de3836 2466 len[2] = (cSz >> (8*sizeof(cSz) - 3));
ashleymills 0:714293de3836 2467 len[3] = cSz << 3;
ashleymills 0:714293de3836 2468
ashleymills 0:714293de3836 2469 x[0] ^= len[0];
ashleymills 0:714293de3836 2470 x[1] ^= len[1];
ashleymills 0:714293de3836 2471 x[2] ^= len[2];
ashleymills 0:714293de3836 2472 x[3] ^= len[3];
ashleymills 0:714293de3836 2473 GMULT(x, bigH);
ashleymills 0:714293de3836 2474 }
ashleymills 0:714293de3836 2475 #ifdef LITTLE_ENDIAN_ORDER
ashleymills 0:714293de3836 2476 ByteReverseWords(x, x, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2477 #endif
ashleymills 0:714293de3836 2478 XMEMCPY(s, x, sSz);
ashleymills 0:714293de3836 2479 }
ashleymills 0:714293de3836 2480
ashleymills 0:714293de3836 2481 #endif /* end GCM_WORD32 */
ashleymills 0:714293de3836 2482
ashleymills 0:714293de3836 2483
ashleymills 0:714293de3836 2484 void AesGcmEncrypt(Aes* aes, byte* out, const byte* in, word32 sz,
ashleymills 0:714293de3836 2485 const byte* iv, word32 ivSz,
ashleymills 0:714293de3836 2486 byte* authTag, word32 authTagSz,
ashleymills 0:714293de3836 2487 const byte* authIn, word32 authInSz)
ashleymills 0:714293de3836 2488 {
ashleymills 0:714293de3836 2489 word32 blocks = sz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2490 word32 partial = sz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2491 const byte* p = in;
ashleymills 0:714293de3836 2492 byte* c = out;
ashleymills 0:714293de3836 2493 byte ctr[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2494 byte scratch[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2495
ashleymills 0:714293de3836 2496 CYASSL_ENTER("AesGcmEncrypt");
ashleymills 0:714293de3836 2497
ashleymills 0:714293de3836 2498 XMEMSET(ctr, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2499 XMEMCPY(ctr, iv, ivSz);
ashleymills 0:714293de3836 2500 InitGcmCounter(ctr);
ashleymills 0:714293de3836 2501
ashleymills 0:714293de3836 2502 while (blocks--) {
ashleymills 0:714293de3836 2503 IncrementGcmCounter(ctr);
ashleymills 0:714293de3836 2504 AesEncrypt(aes, ctr, scratch);
ashleymills 0:714293de3836 2505 xorbuf(scratch, p, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2506 XMEMCPY(c, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2507
ashleymills 0:714293de3836 2508 p += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2509 c += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2510 }
ashleymills 0:714293de3836 2511 if (partial != 0) {
ashleymills 0:714293de3836 2512 IncrementGcmCounter(ctr);
ashleymills 0:714293de3836 2513 AesEncrypt(aes, ctr, scratch);
ashleymills 0:714293de3836 2514 xorbuf(scratch, p, partial);
ashleymills 0:714293de3836 2515 XMEMCPY(c, scratch, partial);
ashleymills 0:714293de3836 2516 }
ashleymills 0:714293de3836 2517 GHASH(aes, authIn, authInSz, out, sz, authTag, authTagSz);
ashleymills 0:714293de3836 2518 InitGcmCounter(ctr);
ashleymills 0:714293de3836 2519 AesEncrypt(aes, ctr, scratch);
ashleymills 0:714293de3836 2520 xorbuf(authTag, scratch, authTagSz);
ashleymills 0:714293de3836 2521 }
ashleymills 0:714293de3836 2522
ashleymills 0:714293de3836 2523
ashleymills 0:714293de3836 2524 int AesGcmDecrypt(Aes* aes, byte* out, const byte* in, word32 sz,
ashleymills 0:714293de3836 2525 const byte* iv, word32 ivSz,
ashleymills 0:714293de3836 2526 const byte* authTag, word32 authTagSz,
ashleymills 0:714293de3836 2527 const byte* authIn, word32 authInSz)
ashleymills 0:714293de3836 2528 {
ashleymills 0:714293de3836 2529 word32 blocks = sz / AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2530 word32 partial = sz % AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2531 const byte* c = in;
ashleymills 0:714293de3836 2532 byte* p = out;
ashleymills 0:714293de3836 2533 byte ctr[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2534 byte scratch[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2535
ashleymills 0:714293de3836 2536 CYASSL_ENTER("AesGcmDecrypt");
ashleymills 0:714293de3836 2537
ashleymills 0:714293de3836 2538 XMEMSET(ctr, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2539 XMEMCPY(ctr, iv, ivSz);
ashleymills 0:714293de3836 2540 InitGcmCounter(ctr);
ashleymills 0:714293de3836 2541
ashleymills 0:714293de3836 2542 /* Calculate the authTag again using the received auth data and the
ashleymills 0:714293de3836 2543 * cipher text. */
ashleymills 0:714293de3836 2544 {
ashleymills 0:714293de3836 2545 byte Tprime[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2546 byte EKY0[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2547
ashleymills 0:714293de3836 2548 GHASH(aes, authIn, authInSz, in, sz, Tprime, sizeof(Tprime));
ashleymills 0:714293de3836 2549 AesEncrypt(aes, ctr, EKY0);
ashleymills 0:714293de3836 2550 xorbuf(Tprime, EKY0, sizeof(Tprime));
ashleymills 0:714293de3836 2551 if (XMEMCMP(authTag, Tprime, authTagSz) != 0) {
ashleymills 0:714293de3836 2552 return AES_GCM_AUTH_E;
ashleymills 0:714293de3836 2553 }
ashleymills 0:714293de3836 2554 }
ashleymills 0:714293de3836 2555
ashleymills 0:714293de3836 2556 while (blocks--) {
ashleymills 0:714293de3836 2557 IncrementGcmCounter(ctr);
ashleymills 0:714293de3836 2558 AesEncrypt(aes, ctr, scratch);
ashleymills 0:714293de3836 2559 xorbuf(scratch, c, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2560 XMEMCPY(p, scratch, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2561
ashleymills 0:714293de3836 2562 p += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2563 c += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2564 }
ashleymills 0:714293de3836 2565 if (partial != 0) {
ashleymills 0:714293de3836 2566 IncrementGcmCounter(ctr);
ashleymills 0:714293de3836 2567 AesEncrypt(aes, ctr, scratch);
ashleymills 0:714293de3836 2568 xorbuf(scratch, c, partial);
ashleymills 0:714293de3836 2569 XMEMCPY(p, scratch, partial);
ashleymills 0:714293de3836 2570 }
ashleymills 0:714293de3836 2571
ashleymills 0:714293de3836 2572 return 0;
ashleymills 0:714293de3836 2573 }
ashleymills 0:714293de3836 2574
ashleymills 0:714293de3836 2575 #endif /* HAVE_AESGCM */
ashleymills 0:714293de3836 2576
ashleymills 0:714293de3836 2577 #ifdef HAVE_AESCCM
ashleymills 0:714293de3836 2578
ashleymills 0:714293de3836 2579 void AesCcmSetKey(Aes* aes, const byte* key, word32 keySz)
ashleymills 0:714293de3836 2580 {
ashleymills 0:714293de3836 2581 byte nonce[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2582
ashleymills 0:714293de3836 2583 if (!((keySz == 16) || (keySz == 24) || (keySz == 32)))
ashleymills 0:714293de3836 2584 return;
ashleymills 0:714293de3836 2585
ashleymills 0:714293de3836 2586 XMEMSET(nonce, 0, sizeof(nonce));
ashleymills 0:714293de3836 2587 AesSetKeyLocal(aes, key, keySz, nonce, AES_ENCRYPTION);
ashleymills 0:714293de3836 2588 }
ashleymills 0:714293de3836 2589
ashleymills 0:714293de3836 2590
ashleymills 0:714293de3836 2591 static void roll_x(Aes* aes, const byte* in, word32 inSz, byte* out)
ashleymills 0:714293de3836 2592 {
ashleymills 0:714293de3836 2593 /* process the bulk of the data */
ashleymills 0:714293de3836 2594 while (inSz >= AES_BLOCK_SIZE) {
ashleymills 0:714293de3836 2595 xorbuf(out, in, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2596 in += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2597 inSz -= AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2598
ashleymills 0:714293de3836 2599 AesEncrypt(aes, out, out);
ashleymills 0:714293de3836 2600 }
ashleymills 0:714293de3836 2601
ashleymills 0:714293de3836 2602 /* process remainder of the data */
ashleymills 0:714293de3836 2603 if (inSz > 0) {
ashleymills 0:714293de3836 2604 xorbuf(out, in, inSz);
ashleymills 0:714293de3836 2605 AesEncrypt(aes, out, out);
ashleymills 0:714293de3836 2606 }
ashleymills 0:714293de3836 2607 }
ashleymills 0:714293de3836 2608
ashleymills 0:714293de3836 2609
ashleymills 0:714293de3836 2610 static void roll_auth(Aes* aes, const byte* in, word32 inSz, byte* out)
ashleymills 0:714293de3836 2611 {
ashleymills 0:714293de3836 2612 word32 authLenSz;
ashleymills 0:714293de3836 2613 word32 remainder;
ashleymills 0:714293de3836 2614
ashleymills 0:714293de3836 2615 /* encode the length in */
ashleymills 0:714293de3836 2616 if (inSz <= 0xFEFF) {
ashleymills 0:714293de3836 2617 authLenSz = 2;
ashleymills 0:714293de3836 2618 out[0] ^= ((inSz & 0xFF00) >> 8);
ashleymills 0:714293de3836 2619 out[1] ^= (inSz & 0x00FF);
ashleymills 0:714293de3836 2620 }
ashleymills 0:714293de3836 2621 else if (inSz <= 0xFFFFFFFF) {
ashleymills 0:714293de3836 2622 authLenSz = 6;
ashleymills 0:714293de3836 2623 out[0] ^= 0xFF; out[1] ^= 0xFE;
ashleymills 0:714293de3836 2624 out[2] ^= ((inSz & 0xFF000000) >> 24);
ashleymills 0:714293de3836 2625 out[3] ^= ((inSz & 0x00FF0000) >> 16);
ashleymills 0:714293de3836 2626 out[4] ^= ((inSz & 0x0000FF00) >> 8);
ashleymills 0:714293de3836 2627 out[5] ^= (inSz & 0x000000FF);
ashleymills 0:714293de3836 2628 }
ashleymills 0:714293de3836 2629 /* Note, the protocol handles auth data up to 2^64, but we are
ashleymills 0:714293de3836 2630 * using 32-bit sizes right now, so the bigger data isn't handled
ashleymills 0:714293de3836 2631 * else if (inSz <= 0xFFFFFFFFFFFFFFFF) {} */
ashleymills 0:714293de3836 2632 else
ashleymills 0:714293de3836 2633 return;
ashleymills 0:714293de3836 2634
ashleymills 0:714293de3836 2635 /* start fill out the rest of the first block */
ashleymills 0:714293de3836 2636 remainder = AES_BLOCK_SIZE - authLenSz;
ashleymills 0:714293de3836 2637 if (inSz >= remainder) {
ashleymills 0:714293de3836 2638 /* plenty of bulk data to fill the remainder of this block */
ashleymills 0:714293de3836 2639 xorbuf(out + authLenSz, in, remainder);
ashleymills 0:714293de3836 2640 inSz -= remainder;
ashleymills 0:714293de3836 2641 in += remainder;
ashleymills 0:714293de3836 2642 }
ashleymills 0:714293de3836 2643 else {
ashleymills 0:714293de3836 2644 /* not enough bulk data, copy what is available, and pad zero */
ashleymills 0:714293de3836 2645 xorbuf(out + authLenSz, in, inSz);
ashleymills 0:714293de3836 2646 inSz = 0;
ashleymills 0:714293de3836 2647 }
ashleymills 0:714293de3836 2648 AesEncrypt(aes, out, out);
ashleymills 0:714293de3836 2649
ashleymills 0:714293de3836 2650 if (inSz > 0)
ashleymills 0:714293de3836 2651 roll_x(aes, in, inSz, out);
ashleymills 0:714293de3836 2652 }
ashleymills 0:714293de3836 2653
ashleymills 0:714293de3836 2654
ashleymills 0:714293de3836 2655 static INLINE void AesCcmCtrInc(byte* B, word32 lenSz)
ashleymills 0:714293de3836 2656 {
ashleymills 0:714293de3836 2657 word32 i;
ashleymills 0:714293de3836 2658
ashleymills 0:714293de3836 2659 for (i = 0; i < lenSz; i++) {
ashleymills 0:714293de3836 2660 if (++B[AES_BLOCK_SIZE - 1 - i] != 0) return;
ashleymills 0:714293de3836 2661 }
ashleymills 0:714293de3836 2662 }
ashleymills 0:714293de3836 2663
ashleymills 0:714293de3836 2664
ashleymills 0:714293de3836 2665 void AesCcmEncrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
ashleymills 0:714293de3836 2666 const byte* nonce, word32 nonceSz,
ashleymills 0:714293de3836 2667 byte* authTag, word32 authTagSz,
ashleymills 0:714293de3836 2668 const byte* authIn, word32 authInSz)
ashleymills 0:714293de3836 2669 {
ashleymills 0:714293de3836 2670 byte A[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2671 byte B[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2672 word32 i, lenSz;
ashleymills 0:714293de3836 2673
ashleymills 0:714293de3836 2674 XMEMCPY(B+1, nonce, nonceSz);
ashleymills 0:714293de3836 2675 lenSz = AES_BLOCK_SIZE - 1 - nonceSz;
ashleymills 0:714293de3836 2676 B[0] = (authInSz > 0 ? 64 : 0)
ashleymills 0:714293de3836 2677 + (8 * ((authTagSz - 2) / 2))
ashleymills 0:714293de3836 2678 + (lenSz - 1);
ashleymills 0:714293de3836 2679 for (i = 0; i < lenSz; i++)
ashleymills 0:714293de3836 2680 B[AES_BLOCK_SIZE - 1 - i] = (inSz >> (8 * i)) & 0xFF;
ashleymills 0:714293de3836 2681
ashleymills 0:714293de3836 2682 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2683 if (authInSz > 0)
ashleymills 0:714293de3836 2684 roll_auth(aes, authIn, authInSz, A);
ashleymills 0:714293de3836 2685 if (inSz > 0)
ashleymills 0:714293de3836 2686 roll_x(aes, in, inSz, A);
ashleymills 0:714293de3836 2687 XMEMCPY(authTag, A, authTagSz);
ashleymills 0:714293de3836 2688
ashleymills 0:714293de3836 2689 B[0] = (lenSz - 1);
ashleymills 0:714293de3836 2690 for (i = 0; i < lenSz; i++)
ashleymills 0:714293de3836 2691 B[AES_BLOCK_SIZE - 1 - i] = 0;
ashleymills 0:714293de3836 2692 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2693 xorbuf(authTag, A, authTagSz);
ashleymills 0:714293de3836 2694
ashleymills 0:714293de3836 2695 B[15] = 1;
ashleymills 0:714293de3836 2696 while (inSz >= AES_BLOCK_SIZE) {
ashleymills 0:714293de3836 2697 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2698 xorbuf(A, in, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2699 XMEMCPY(out, A, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2700
ashleymills 0:714293de3836 2701 AesCcmCtrInc(B, lenSz);
ashleymills 0:714293de3836 2702 inSz -= AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2703 in += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2704 out += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2705 }
ashleymills 0:714293de3836 2706 if (inSz > 0) {
ashleymills 0:714293de3836 2707 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2708 xorbuf(A, in, inSz);
ashleymills 0:714293de3836 2709 XMEMCPY(out, A, inSz);
ashleymills 0:714293de3836 2710 }
ashleymills 0:714293de3836 2711
ashleymills 0:714293de3836 2712 XMEMSET(A, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2713 XMEMSET(B, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2714 }
ashleymills 0:714293de3836 2715
ashleymills 0:714293de3836 2716
ashleymills 0:714293de3836 2717 int AesCcmDecrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
ashleymills 0:714293de3836 2718 const byte* nonce, word32 nonceSz,
ashleymills 0:714293de3836 2719 const byte* authTag, word32 authTagSz,
ashleymills 0:714293de3836 2720 const byte* authIn, word32 authInSz)
ashleymills 0:714293de3836 2721 {
ashleymills 0:714293de3836 2722 byte A[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2723 byte B[AES_BLOCK_SIZE];
ashleymills 0:714293de3836 2724 byte* o;
ashleymills 0:714293de3836 2725 word32 i, lenSz, oSz; int result = 0;
ashleymills 0:714293de3836 2726
ashleymills 0:714293de3836 2727 o = out;
ashleymills 0:714293de3836 2728 oSz = inSz;
ashleymills 0:714293de3836 2729 XMEMCPY(B+1, nonce, nonceSz);
ashleymills 0:714293de3836 2730 lenSz = AES_BLOCK_SIZE - 1 - nonceSz;
ashleymills 0:714293de3836 2731
ashleymills 0:714293de3836 2732 B[0] = (lenSz - 1);
ashleymills 0:714293de3836 2733 for (i = 0; i < lenSz; i++)
ashleymills 0:714293de3836 2734 B[AES_BLOCK_SIZE - 1 - i] = 0;
ashleymills 0:714293de3836 2735 B[15] = 1;
ashleymills 0:714293de3836 2736
ashleymills 0:714293de3836 2737 while (oSz >= AES_BLOCK_SIZE) {
ashleymills 0:714293de3836 2738 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2739 xorbuf(A, in, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2740 XMEMCPY(o, A, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2741
ashleymills 0:714293de3836 2742 AesCcmCtrInc(B, lenSz);
ashleymills 0:714293de3836 2743 oSz -= AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2744 in += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2745 o += AES_BLOCK_SIZE;
ashleymills 0:714293de3836 2746 }
ashleymills 0:714293de3836 2747 if (inSz > 0) {
ashleymills 0:714293de3836 2748 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2749 xorbuf(A, in, oSz);
ashleymills 0:714293de3836 2750 XMEMCPY(o, A, oSz);
ashleymills 0:714293de3836 2751 }
ashleymills 0:714293de3836 2752
ashleymills 0:714293de3836 2753 for (i = 0; i < lenSz; i++)
ashleymills 0:714293de3836 2754 B[AES_BLOCK_SIZE - 1 - i] = 0;
ashleymills 0:714293de3836 2755 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2756
ashleymills 0:714293de3836 2757 o = out;
ashleymills 0:714293de3836 2758 oSz = inSz;
ashleymills 0:714293de3836 2759
ashleymills 0:714293de3836 2760 B[0] = (authInSz > 0 ? 64 : 0)
ashleymills 0:714293de3836 2761 + (8 * ((authTagSz - 2) / 2))
ashleymills 0:714293de3836 2762 + (lenSz - 1);
ashleymills 0:714293de3836 2763 for (i = 0; i < lenSz; i++)
ashleymills 0:714293de3836 2764 B[AES_BLOCK_SIZE - 1 - i] = (inSz >> (8 * i)) & 0xFF;
ashleymills 0:714293de3836 2765
ashleymills 0:714293de3836 2766 AesEncrypt(aes, B, A);
ashleymills 0:714293de3836 2767 if (authInSz > 0)
ashleymills 0:714293de3836 2768 roll_auth(aes, authIn, authInSz, A);
ashleymills 0:714293de3836 2769 if (inSz > 0)
ashleymills 0:714293de3836 2770 roll_x(aes, o, oSz, A);
ashleymills 0:714293de3836 2771
ashleymills 0:714293de3836 2772 B[0] = (lenSz - 1);
ashleymills 0:714293de3836 2773 for (i = 0; i < lenSz; i++)
ashleymills 0:714293de3836 2774 B[AES_BLOCK_SIZE - 1 - i] = 0;
ashleymills 0:714293de3836 2775 AesEncrypt(aes, B, B);
ashleymills 0:714293de3836 2776 xorbuf(A, B, authTagSz);
ashleymills 0:714293de3836 2777
ashleymills 0:714293de3836 2778 if (XMEMCMP(A, authTag, authTagSz) != 0) {
ashleymills 0:714293de3836 2779 /* If the authTag check fails, don't keep the decrypted data.
ashleymills 0:714293de3836 2780 * Unfortunately, you need the decrypted data to calculate the
ashleymills 0:714293de3836 2781 * check value. */
ashleymills 0:714293de3836 2782 XMEMSET(out, 0, inSz);
ashleymills 0:714293de3836 2783 result = AES_CCM_AUTH_E;
ashleymills 0:714293de3836 2784 }
ashleymills 0:714293de3836 2785
ashleymills 0:714293de3836 2786 XMEMSET(A, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2787 XMEMSET(B, 0, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2788 o = NULL;
ashleymills 0:714293de3836 2789
ashleymills 0:714293de3836 2790 return result;
ashleymills 0:714293de3836 2791 }
ashleymills 0:714293de3836 2792
ashleymills 0:714293de3836 2793 #endif
ashleymills 0:714293de3836 2794
ashleymills 0:714293de3836 2795 #endif /* STM32F2_CRYPTO */
ashleymills 0:714293de3836 2796
ashleymills 0:714293de3836 2797 int AesSetIV(Aes* aes, const byte* iv)
ashleymills 0:714293de3836 2798 {
ashleymills 0:714293de3836 2799 if (aes == NULL)
ashleymills 0:714293de3836 2800 return BAD_FUNC_ARG;
ashleymills 0:714293de3836 2801
ashleymills 0:714293de3836 2802 if (iv)
ashleymills 0:714293de3836 2803 XMEMCPY(aes->reg, iv, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2804
ashleymills 0:714293de3836 2805 return 0;
ashleymills 0:714293de3836 2806 }
ashleymills 0:714293de3836 2807
ashleymills 0:714293de3836 2808
ashleymills 0:714293de3836 2809 #ifdef HAVE_CAVIUM
ashleymills 0:714293de3836 2810
ashleymills 0:714293de3836 2811 #include <cyassl/ctaocrypt/logging.h>
ashleymills 0:714293de3836 2812 #include "cavium_common.h"
ashleymills 0:714293de3836 2813
ashleymills 0:714293de3836 2814 /* Initiliaze Aes for use with Nitrox device */
ashleymills 0:714293de3836 2815 int AesInitCavium(Aes* aes, int devId)
ashleymills 0:714293de3836 2816 {
ashleymills 0:714293de3836 2817 if (aes == NULL)
ashleymills 0:714293de3836 2818 return -1;
ashleymills 0:714293de3836 2819
ashleymills 0:714293de3836 2820 if (CspAllocContext(CONTEXT_SSL, &aes->contextHandle, devId) != 0)
ashleymills 0:714293de3836 2821 return -1;
ashleymills 0:714293de3836 2822
ashleymills 0:714293de3836 2823 aes->devId = devId;
ashleymills 0:714293de3836 2824 aes->magic = CYASSL_AES_CAVIUM_MAGIC;
ashleymills 0:714293de3836 2825
ashleymills 0:714293de3836 2826 return 0;
ashleymills 0:714293de3836 2827 }
ashleymills 0:714293de3836 2828
ashleymills 0:714293de3836 2829
ashleymills 0:714293de3836 2830 /* Free Aes from use with Nitrox device */
ashleymills 0:714293de3836 2831 void AesFreeCavium(Aes* aes)
ashleymills 0:714293de3836 2832 {
ashleymills 0:714293de3836 2833 if (aes == NULL)
ashleymills 0:714293de3836 2834 return;
ashleymills 0:714293de3836 2835
ashleymills 0:714293de3836 2836 if (aes->magic != CYASSL_AES_CAVIUM_MAGIC)
ashleymills 0:714293de3836 2837 return;
ashleymills 0:714293de3836 2838
ashleymills 0:714293de3836 2839 CspFreeContext(CONTEXT_SSL, aes->contextHandle, aes->devId);
ashleymills 0:714293de3836 2840 aes->magic = 0;
ashleymills 0:714293de3836 2841 }
ashleymills 0:714293de3836 2842
ashleymills 0:714293de3836 2843
ashleymills 0:714293de3836 2844 static int AesCaviumSetKey(Aes* aes, const byte* key, word32 length,
ashleymills 0:714293de3836 2845 const byte* iv)
ashleymills 0:714293de3836 2846 {
ashleymills 0:714293de3836 2847 if (aes == NULL)
ashleymills 0:714293de3836 2848 return -1;
ashleymills 0:714293de3836 2849
ashleymills 0:714293de3836 2850 XMEMCPY(aes->key, key, length); /* key still holds key, iv still in reg */
ashleymills 0:714293de3836 2851 if (length == 16)
ashleymills 0:714293de3836 2852 aes->type = AES_128;
ashleymills 0:714293de3836 2853 else if (length == 24)
ashleymills 0:714293de3836 2854 aes->type = AES_192;
ashleymills 0:714293de3836 2855 else if (length == 32)
ashleymills 0:714293de3836 2856 aes->type = AES_256;
ashleymills 0:714293de3836 2857
ashleymills 0:714293de3836 2858 return AesSetIV(aes, iv);
ashleymills 0:714293de3836 2859 }
ashleymills 0:714293de3836 2860
ashleymills 0:714293de3836 2861
ashleymills 0:714293de3836 2862 static void AesCaviumCbcEncrypt(Aes* aes, byte* out, const byte* in,
ashleymills 0:714293de3836 2863 word32 length)
ashleymills 0:714293de3836 2864 {
ashleymills 0:714293de3836 2865 word offset = 0;
ashleymills 0:714293de3836 2866 word32 requestId;
ashleymills 0:714293de3836 2867
ashleymills 0:714293de3836 2868 while (length > CYASSL_MAX_16BIT) {
ashleymills 0:714293de3836 2869 word16 slen = (word16)CYASSL_MAX_16BIT;
ashleymills 0:714293de3836 2870 if (CspEncryptAes(CAVIUM_BLOCKING, aes->contextHandle, CAVIUM_NO_UPDATE,
ashleymills 0:714293de3836 2871 aes->type, slen, (byte*)in + offset, out + offset,
ashleymills 0:714293de3836 2872 (byte*)aes->reg, (byte*)aes->key, &requestId,
ashleymills 0:714293de3836 2873 aes->devId) != 0) {
ashleymills 0:714293de3836 2874 CYASSL_MSG("Bad Cavium Aes Encrypt");
ashleymills 0:714293de3836 2875 }
ashleymills 0:714293de3836 2876 length -= CYASSL_MAX_16BIT;
ashleymills 0:714293de3836 2877 offset += CYASSL_MAX_16BIT;
ashleymills 0:714293de3836 2878 XMEMCPY(aes->reg, out + offset - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2879 }
ashleymills 0:714293de3836 2880 if (length) {
ashleymills 0:714293de3836 2881 word16 slen = (word16)length;
ashleymills 0:714293de3836 2882 if (CspEncryptAes(CAVIUM_BLOCKING, aes->contextHandle, CAVIUM_NO_UPDATE,
ashleymills 0:714293de3836 2883 aes->type, slen, (byte*)in + offset, out + offset,
ashleymills 0:714293de3836 2884 (byte*)aes->reg, (byte*)aes->key, &requestId,
ashleymills 0:714293de3836 2885 aes->devId) != 0) {
ashleymills 0:714293de3836 2886 CYASSL_MSG("Bad Cavium Aes Encrypt");
ashleymills 0:714293de3836 2887 }
ashleymills 0:714293de3836 2888 XMEMCPY(aes->reg, out + offset+length - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2889 }
ashleymills 0:714293de3836 2890 }
ashleymills 0:714293de3836 2891
ashleymills 0:714293de3836 2892 static void AesCaviumCbcDecrypt(Aes* aes, byte* out, const byte* in,
ashleymills 0:714293de3836 2893 word32 length)
ashleymills 0:714293de3836 2894 {
ashleymills 0:714293de3836 2895 word32 requestId;
ashleymills 0:714293de3836 2896 word offset = 0;
ashleymills 0:714293de3836 2897
ashleymills 0:714293de3836 2898 while (length > CYASSL_MAX_16BIT) {
ashleymills 0:714293de3836 2899 word16 slen = (word16)CYASSL_MAX_16BIT;
ashleymills 0:714293de3836 2900 XMEMCPY(aes->tmp, in + offset + slen - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2901 if (CspDecryptAes(CAVIUM_BLOCKING, aes->contextHandle, CAVIUM_NO_UPDATE,
ashleymills 0:714293de3836 2902 aes->type, slen, (byte*)in + offset, out + offset,
ashleymills 0:714293de3836 2903 (byte*)aes->reg, (byte*)aes->key, &requestId,
ashleymills 0:714293de3836 2904 aes->devId) != 0) {
ashleymills 0:714293de3836 2905 CYASSL_MSG("Bad Cavium Aes Decrypt");
ashleymills 0:714293de3836 2906 }
ashleymills 0:714293de3836 2907 length -= CYASSL_MAX_16BIT;
ashleymills 0:714293de3836 2908 offset += CYASSL_MAX_16BIT;
ashleymills 0:714293de3836 2909 XMEMCPY(aes->reg, aes->tmp, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2910 }
ashleymills 0:714293de3836 2911 if (length) {
ashleymills 0:714293de3836 2912 word16 slen = (word16)length;
ashleymills 0:714293de3836 2913 XMEMCPY(aes->tmp, in + offset + slen - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2914 if (CspDecryptAes(CAVIUM_BLOCKING, aes->contextHandle, CAVIUM_NO_UPDATE,
ashleymills 0:714293de3836 2915 aes->type, slen, (byte*)in + offset, out + offset,
ashleymills 0:714293de3836 2916 (byte*)aes->reg, (byte*)aes->key, &requestId,
ashleymills 0:714293de3836 2917 aes->devId) != 0) {
ashleymills 0:714293de3836 2918 CYASSL_MSG("Bad Cavium Aes Decrypt");
ashleymills 0:714293de3836 2919 }
ashleymills 0:714293de3836 2920 XMEMCPY(aes->reg, aes->tmp, AES_BLOCK_SIZE);
ashleymills 0:714293de3836 2921 }
ashleymills 0:714293de3836 2922 }
ashleymills 0:714293de3836 2923
ashleymills 0:714293de3836 2924 #endif /* HAVE_CAVIUM */
ashleymills 0:714293de3836 2925
ashleymills 0:714293de3836 2926 #endif /* NO_AES */
ashleymills 0:714293de3836 2927