Greg Steiert / pegasus_dev

Dependents:   blinky_max32630fthr

features/mbedtls/src/aes.c@0:5c4d7b2438d3, 2016-11-11 (annotated)

Committer:
switches
Date:
Fri Nov 11 20:59:50 2016 +0000
Revision:
0:5c4d7b2438d3
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
switches 0:5c4d7b2438d3 1 /*
switches 0:5c4d7b2438d3 2 * FIPS-197 compliant AES implementation
switches 0:5c4d7b2438d3 3 *
switches 0:5c4d7b2438d3 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
switches 0:5c4d7b2438d3 5 * SPDX-License-Identifier: Apache-2.0
switches 0:5c4d7b2438d3 6 *
switches 0:5c4d7b2438d3 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
switches 0:5c4d7b2438d3 8 * not use this file except in compliance with the License.
switches 0:5c4d7b2438d3 9 * You may obtain a copy of the License at
switches 0:5c4d7b2438d3 10 *
switches 0:5c4d7b2438d3 11 * http://www.apache.org/licenses/LICENSE-2.0
switches 0:5c4d7b2438d3 12 *
switches 0:5c4d7b2438d3 13 * Unless required by applicable law or agreed to in writing, software
switches 0:5c4d7b2438d3 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
switches 0:5c4d7b2438d3 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
switches 0:5c4d7b2438d3 16 * See the License for the specific language governing permissions and
switches 0:5c4d7b2438d3 17 * limitations under the License.
switches 0:5c4d7b2438d3 18 *
switches 0:5c4d7b2438d3 19 * This file is part of mbed TLS (https://tls.mbed.org)
switches 0:5c4d7b2438d3 20 */
switches 0:5c4d7b2438d3 21 /*
switches 0:5c4d7b2438d3 22 * The AES block cipher was designed by Vincent Rijmen and Joan Daemen.
switches 0:5c4d7b2438d3 23 *
switches 0:5c4d7b2438d3 24 * http://csrc.nist.gov/encryption/aes/rijndael/Rijndael.pdf
switches 0:5c4d7b2438d3 25 * http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
switches 0:5c4d7b2438d3 26 */
switches 0:5c4d7b2438d3 27
switches 0:5c4d7b2438d3 28 #if !defined(MBEDTLS_CONFIG_FILE)
switches 0:5c4d7b2438d3 29 #include "mbedtls/config.h"
switches 0:5c4d7b2438d3 30 #else
switches 0:5c4d7b2438d3 31 #include MBEDTLS_CONFIG_FILE
switches 0:5c4d7b2438d3 32 #endif
switches 0:5c4d7b2438d3 33
switches 0:5c4d7b2438d3 34 #if defined(MBEDTLS_AES_C)
switches 0:5c4d7b2438d3 35
switches 0:5c4d7b2438d3 36 #include <string.h>
switches 0:5c4d7b2438d3 37
switches 0:5c4d7b2438d3 38 #include "mbedtls/aes.h"
switches 0:5c4d7b2438d3 39 #if defined(MBEDTLS_PADLOCK_C)
switches 0:5c4d7b2438d3 40 #include "mbedtls/padlock.h"
switches 0:5c4d7b2438d3 41 #endif
switches 0:5c4d7b2438d3 42 #if defined(MBEDTLS_AESNI_C)
switches 0:5c4d7b2438d3 43 #include "mbedtls/aesni.h"
switches 0:5c4d7b2438d3 44 #endif
switches 0:5c4d7b2438d3 45
switches 0:5c4d7b2438d3 46 #if defined(MBEDTLS_SELF_TEST)
switches 0:5c4d7b2438d3 47 #if defined(MBEDTLS_PLATFORM_C)
switches 0:5c4d7b2438d3 48 #include "mbedtls/platform.h"
switches 0:5c4d7b2438d3 49 #else
switches 0:5c4d7b2438d3 50 #include <stdio.h>
switches 0:5c4d7b2438d3 51 #define mbedtls_printf printf
switches 0:5c4d7b2438d3 52 #endif /* MBEDTLS_PLATFORM_C */
switches 0:5c4d7b2438d3 53 #endif /* MBEDTLS_SELF_TEST */
switches 0:5c4d7b2438d3 54
switches 0:5c4d7b2438d3 55 #if !defined(MBEDTLS_AES_ALT)
switches 0:5c4d7b2438d3 56
switches 0:5c4d7b2438d3 57 /* Implementation that should never be optimized out by the compiler */
switches 0:5c4d7b2438d3 58 static void mbedtls_zeroize( void *v, size_t n ) {
switches 0:5c4d7b2438d3 59 volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
switches 0:5c4d7b2438d3 60 }
switches 0:5c4d7b2438d3 61
switches 0:5c4d7b2438d3 62 /*
switches 0:5c4d7b2438d3 63 * 32-bit integer manipulation macros (little endian)
switches 0:5c4d7b2438d3 64 */
switches 0:5c4d7b2438d3 65 #ifndef GET_UINT32_LE
switches 0:5c4d7b2438d3 66 #define GET_UINT32_LE(n,b,i) \
switches 0:5c4d7b2438d3 67 { \
switches 0:5c4d7b2438d3 68 (n) = ( (uint32_t) (b)[(i) ] ) \
switches 0:5c4d7b2438d3 69 | ( (uint32_t) (b)[(i) + 1] << 8 ) \
switches 0:5c4d7b2438d3 70 | ( (uint32_t) (b)[(i) + 2] << 16 ) \
switches 0:5c4d7b2438d3 71 | ( (uint32_t) (b)[(i) + 3] << 24 ); \
switches 0:5c4d7b2438d3 72 }
switches 0:5c4d7b2438d3 73 #endif
switches 0:5c4d7b2438d3 74
switches 0:5c4d7b2438d3 75 #ifndef PUT_UINT32_LE
switches 0:5c4d7b2438d3 76 #define PUT_UINT32_LE(n,b,i) \
switches 0:5c4d7b2438d3 77 { \
switches 0:5c4d7b2438d3 78 (b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \
switches 0:5c4d7b2438d3 79 (b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \
switches 0:5c4d7b2438d3 80 (b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \
switches 0:5c4d7b2438d3 81 (b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \
switches 0:5c4d7b2438d3 82 }
switches 0:5c4d7b2438d3 83 #endif
switches 0:5c4d7b2438d3 84
switches 0:5c4d7b2438d3 85 #if defined(MBEDTLS_PADLOCK_C) && \
switches 0:5c4d7b2438d3 86 ( defined(MBEDTLS_HAVE_X86) || defined(MBEDTLS_PADLOCK_ALIGN16) )
switches 0:5c4d7b2438d3 87 static int aes_padlock_ace = -1;
switches 0:5c4d7b2438d3 88 #endif
switches 0:5c4d7b2438d3 89
switches 0:5c4d7b2438d3 90 #if defined(MBEDTLS_AES_ROM_TABLES)
switches 0:5c4d7b2438d3 91 /*
switches 0:5c4d7b2438d3 92 * Forward S-box
switches 0:5c4d7b2438d3 93 */
switches 0:5c4d7b2438d3 94 static const unsigned char FSb[256] =
switches 0:5c4d7b2438d3 95 {
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switches 0:5c4d7b2438d3 127 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
switches 0:5c4d7b2438d3 128 };
switches 0:5c4d7b2438d3 129
switches 0:5c4d7b2438d3 130 /*
switches 0:5c4d7b2438d3 131 * Forward tables
switches 0:5c4d7b2438d3 132 */
switches 0:5c4d7b2438d3 133 #define FT \
switches 0:5c4d7b2438d3 134 \
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switches 0:5c4d7b2438d3 193 V(B6,9B,9B,2D), V(22,1E,1E,3C), V(92,87,87,15), V(20,E9,E9,C9), \
switches 0:5c4d7b2438d3 194 V(49,CE,CE,87), V(FF,55,55,AA), V(78,28,28,50), V(7A,DF,DF,A5), \
switches 0:5c4d7b2438d3 195 V(8F,8C,8C,03), V(F8,A1,A1,59), V(80,89,89,09), V(17,0D,0D,1A), \
switches 0:5c4d7b2438d3 196 V(DA,BF,BF,65), V(31,E6,E6,D7), V(C6,42,42,84), V(B8,68,68,D0), \
switches 0:5c4d7b2438d3 197 V(C3,41,41,82), V(B0,99,99,29), V(77,2D,2D,5A), V(11,0F,0F,1E), \
switches 0:5c4d7b2438d3 198 V(CB,B0,B0,7B), V(FC,54,54,A8), V(D6,BB,BB,6D), V(3A,16,16,2C)
switches 0:5c4d7b2438d3 199
switches 0:5c4d7b2438d3 200 #define V(a,b,c,d) 0x##a##b##c##d
switches 0:5c4d7b2438d3 201 static const uint32_t FT0[256] = { FT };
switches 0:5c4d7b2438d3 202 #undef V
switches 0:5c4d7b2438d3 203
switches 0:5c4d7b2438d3 204 #define V(a,b,c,d) 0x##b##c##d##a
switches 0:5c4d7b2438d3 205 static const uint32_t FT1[256] = { FT };
switches 0:5c4d7b2438d3 206 #undef V
switches 0:5c4d7b2438d3 207
switches 0:5c4d7b2438d3 208 #define V(a,b,c,d) 0x##c##d##a##b
switches 0:5c4d7b2438d3 209 static const uint32_t FT2[256] = { FT };
switches 0:5c4d7b2438d3 210 #undef V
switches 0:5c4d7b2438d3 211
switches 0:5c4d7b2438d3 212 #define V(a,b,c,d) 0x##d##a##b##c
switches 0:5c4d7b2438d3 213 static const uint32_t FT3[256] = { FT };
switches 0:5c4d7b2438d3 214 #undef V
switches 0:5c4d7b2438d3 215
switches 0:5c4d7b2438d3 216 #undef FT
switches 0:5c4d7b2438d3 217
switches 0:5c4d7b2438d3 218 /*
switches 0:5c4d7b2438d3 219 * Reverse S-box
switches 0:5c4d7b2438d3 220 */
switches 0:5c4d7b2438d3 221 static const unsigned char RSb[256] =
switches 0:5c4d7b2438d3 222 {
switches 0:5c4d7b2438d3 223 0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38,
switches 0:5c4d7b2438d3 224 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
switches 0:5c4d7b2438d3 225 0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87,
switches 0:5c4d7b2438d3 226 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
switches 0:5c4d7b2438d3 227 0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D,
switches 0:5c4d7b2438d3 228 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
switches 0:5c4d7b2438d3 229 0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2,
switches 0:5c4d7b2438d3 230 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
switches 0:5c4d7b2438d3 231 0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16,
switches 0:5c4d7b2438d3 232 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
switches 0:5c4d7b2438d3 233 0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA,
switches 0:5c4d7b2438d3 234 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
switches 0:5c4d7b2438d3 235 0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A,
switches 0:5c4d7b2438d3 236 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
switches 0:5c4d7b2438d3 237 0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02,
switches 0:5c4d7b2438d3 238 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
switches 0:5c4d7b2438d3 239 0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA,
switches 0:5c4d7b2438d3 240 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
switches 0:5c4d7b2438d3 241 0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85,
switches 0:5c4d7b2438d3 242 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
switches 0:5c4d7b2438d3 243 0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89,
switches 0:5c4d7b2438d3 244 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
switches 0:5c4d7b2438d3 245 0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20,
switches 0:5c4d7b2438d3 246 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
switches 0:5c4d7b2438d3 247 0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31,
switches 0:5c4d7b2438d3 248 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
switches 0:5c4d7b2438d3 249 0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D,
switches 0:5c4d7b2438d3 250 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
switches 0:5c4d7b2438d3 251 0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0,
switches 0:5c4d7b2438d3 252 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
switches 0:5c4d7b2438d3 253 0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26,
switches 0:5c4d7b2438d3 254 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
switches 0:5c4d7b2438d3 255 };
switches 0:5c4d7b2438d3 256
switches 0:5c4d7b2438d3 257 /*
switches 0:5c4d7b2438d3 258 * Reverse tables
switches 0:5c4d7b2438d3 259 */
switches 0:5c4d7b2438d3 260 #define RT \
switches 0:5c4d7b2438d3 261 \
switches 0:5c4d7b2438d3 262 V(50,A7,F4,51), V(53,65,41,7E), V(C3,A4,17,1A), V(96,5E,27,3A), \
switches 0:5c4d7b2438d3 263 V(CB,6B,AB,3B), V(F1,45,9D,1F), V(AB,58,FA,AC), V(93,03,E3,4B), \
switches 0:5c4d7b2438d3 264 V(55,FA,30,20), V(F6,6D,76,AD), V(91,76,CC,88), V(25,4C,02,F5), \
switches 0:5c4d7b2438d3 265 V(FC,D7,E5,4F), V(D7,CB,2A,C5), V(80,44,35,26), V(8F,A3,62,B5), \
switches 0:5c4d7b2438d3 266 V(49,5A,B1,DE), V(67,1B,BA,25), V(98,0E,EA,45), V(E1,C0,FE,5D), \
switches 0:5c4d7b2438d3 267 V(02,75,2F,C3), V(12,F0,4C,81), V(A3,97,46,8D), V(C6,F9,D3,6B), \
switches 0:5c4d7b2438d3 268 V(E7,5F,8F,03), V(95,9C,92,15), V(EB,7A,6D,BF), V(DA,59,52,95), \
switches 0:5c4d7b2438d3 269 V(2D,83,BE,D4), V(D3,21,74,58), V(29,69,E0,49), V(44,C8,C9,8E), \
switches 0:5c4d7b2438d3 270 V(6A,89,C2,75), V(78,79,8E,F4), V(6B,3E,58,99), V(DD,71,B9,27), \
switches 0:5c4d7b2438d3 271 V(B6,4F,E1,BE), V(17,AD,88,F0), V(66,AC,20,C9), V(B4,3A,CE,7D), \
switches 0:5c4d7b2438d3 272 V(18,4A,DF,63), V(82,31,1A,E5), V(60,33,51,97), V(45,7F,53,62), \
switches 0:5c4d7b2438d3 273 V(E0,77,64,B1), V(84,AE,6B,BB), V(1C,A0,81,FE), V(94,2B,08,F9), \
switches 0:5c4d7b2438d3 274 V(58,68,48,70), V(19,FD,45,8F), V(87,6C,DE,94), V(B7,F8,7B,52), \
switches 0:5c4d7b2438d3 275 V(23,D3,73,AB), V(E2,02,4B,72), V(57,8F,1F,E3), V(2A,AB,55,66), \
switches 0:5c4d7b2438d3 276 V(07,28,EB,B2), V(03,C2,B5,2F), V(9A,7B,C5,86), V(A5,08,37,D3), \
switches 0:5c4d7b2438d3 277 V(F2,87,28,30), V(B2,A5,BF,23), V(BA,6A,03,02), V(5C,82,16,ED), \
switches 0:5c4d7b2438d3 278 V(2B,1C,CF,8A), V(92,B4,79,A7), V(F0,F2,07,F3), V(A1,E2,69,4E), \
switches 0:5c4d7b2438d3 279 V(CD,F4,DA,65), V(D5,BE,05,06), V(1F,62,34,D1), V(8A,FE,A6,C4), \
switches 0:5c4d7b2438d3 280 V(9D,53,2E,34), V(A0,55,F3,A2), V(32,E1,8A,05), V(75,EB,F6,A4), \
switches 0:5c4d7b2438d3 281 V(39,EC,83,0B), V(AA,EF,60,40), V(06,9F,71,5E), V(51,10,6E,BD), \
switches 0:5c4d7b2438d3 282 V(F9,8A,21,3E), V(3D,06,DD,96), V(AE,05,3E,DD), V(46,BD,E6,4D), \
switches 0:5c4d7b2438d3 283 V(B5,8D,54,91), V(05,5D,C4,71), V(6F,D4,06,04), V(FF,15,50,60), \
switches 0:5c4d7b2438d3 284 V(24,FB,98,19), V(97,E9,BD,D6), V(CC,43,40,89), V(77,9E,D9,67), \
switches 0:5c4d7b2438d3 285 V(BD,42,E8,B0), V(88,8B,89,07), V(38,5B,19,E7), V(DB,EE,C8,79), \
switches 0:5c4d7b2438d3 286 V(47,0A,7C,A1), V(E9,0F,42,7C), V(C9,1E,84,F8), V(00,00,00,00), \
switches 0:5c4d7b2438d3 287 V(83,86,80,09), V(48,ED,2B,32), V(AC,70,11,1E), V(4E,72,5A,6C), \
switches 0:5c4d7b2438d3 288 V(FB,FF,0E,FD), V(56,38,85,0F), V(1E,D5,AE,3D), V(27,39,2D,36), \
switches 0:5c4d7b2438d3 289 V(64,D9,0F,0A), V(21,A6,5C,68), V(D1,54,5B,9B), V(3A,2E,36,24), \
switches 0:5c4d7b2438d3 290 V(B1,67,0A,0C), V(0F,E7,57,93), V(D2,96,EE,B4), V(9E,91,9B,1B), \
switches 0:5c4d7b2438d3 291 V(4F,C5,C0,80), V(A2,20,DC,61), V(69,4B,77,5A), V(16,1A,12,1C), \
switches 0:5c4d7b2438d3 292 V(0A,BA,93,E2), V(E5,2A,A0,C0), V(43,E0,22,3C), V(1D,17,1B,12), \
switches 0:5c4d7b2438d3 293 V(0B,0D,09,0E), V(AD,C7,8B,F2), V(B9,A8,B6,2D), V(C8,A9,1E,14), \
switches 0:5c4d7b2438d3 294 V(85,19,F1,57), V(4C,07,75,AF), V(BB,DD,99,EE), V(FD,60,7F,A3), \
switches 0:5c4d7b2438d3 295 V(9F,26,01,F7), V(BC,F5,72,5C), V(C5,3B,66,44), V(34,7E,FB,5B), \
switches 0:5c4d7b2438d3 296 V(76,29,43,8B), V(DC,C6,23,CB), V(68,FC,ED,B6), V(63,F1,E4,B8), \
switches 0:5c4d7b2438d3 297 V(CA,DC,31,D7), V(10,85,63,42), V(40,22,97,13), V(20,11,C6,84), \
switches 0:5c4d7b2438d3 298 V(7D,24,4A,85), V(F8,3D,BB,D2), V(11,32,F9,AE), V(6D,A1,29,C7), \
switches 0:5c4d7b2438d3 299 V(4B,2F,9E,1D), V(F3,30,B2,DC), V(EC,52,86,0D), V(D0,E3,C1,77), \
switches 0:5c4d7b2438d3 300 V(6C,16,B3,2B), V(99,B9,70,A9), V(FA,48,94,11), V(22,64,E9,47), \
switches 0:5c4d7b2438d3 301 V(C4,8C,FC,A8), V(1A,3F,F0,A0), V(D8,2C,7D,56), V(EF,90,33,22), \
switches 0:5c4d7b2438d3 302 V(C7,4E,49,87), V(C1,D1,38,D9), V(FE,A2,CA,8C), V(36,0B,D4,98), \
switches 0:5c4d7b2438d3 303 V(CF,81,F5,A6), V(28,DE,7A,A5), V(26,8E,B7,DA), V(A4,BF,AD,3F), \
switches 0:5c4d7b2438d3 304 V(E4,9D,3A,2C), V(0D,92,78,50), V(9B,CC,5F,6A), V(62,46,7E,54), \
switches 0:5c4d7b2438d3 305 V(C2,13,8D,F6), V(E8,B8,D8,90), V(5E,F7,39,2E), V(F5,AF,C3,82), \
switches 0:5c4d7b2438d3 306 V(BE,80,5D,9F), V(7C,93,D0,69), V(A9,2D,D5,6F), V(B3,12,25,CF), \
switches 0:5c4d7b2438d3 307 V(3B,99,AC,C8), V(A7,7D,18,10), V(6E,63,9C,E8), V(7B,BB,3B,DB), \
switches 0:5c4d7b2438d3 308 V(09,78,26,CD), V(F4,18,59,6E), V(01,B7,9A,EC), V(A8,9A,4F,83), \
switches 0:5c4d7b2438d3 309 V(65,6E,95,E6), V(7E,E6,FF,AA), V(08,CF,BC,21), V(E6,E8,15,EF), \
switches 0:5c4d7b2438d3 310 V(D9,9B,E7,BA), V(CE,36,6F,4A), V(D4,09,9F,EA), V(D6,7C,B0,29), \
switches 0:5c4d7b2438d3 311 V(AF,B2,A4,31), V(31,23,3F,2A), V(30,94,A5,C6), V(C0,66,A2,35), \
switches 0:5c4d7b2438d3 312 V(37,BC,4E,74), V(A6,CA,82,FC), V(B0,D0,90,E0), V(15,D8,A7,33), \
switches 0:5c4d7b2438d3 313 V(4A,98,04,F1), V(F7,DA,EC,41), V(0E,50,CD,7F), V(2F,F6,91,17), \
switches 0:5c4d7b2438d3 314 V(8D,D6,4D,76), V(4D,B0,EF,43), V(54,4D,AA,CC), V(DF,04,96,E4), \
switches 0:5c4d7b2438d3 315 V(E3,B5,D1,9E), V(1B,88,6A,4C), V(B8,1F,2C,C1), V(7F,51,65,46), \
switches 0:5c4d7b2438d3 316 V(04,EA,5E,9D), V(5D,35,8C,01), V(73,74,87,FA), V(2E,41,0B,FB), \
switches 0:5c4d7b2438d3 317 V(5A,1D,67,B3), V(52,D2,DB,92), V(33,56,10,E9), V(13,47,D6,6D), \
switches 0:5c4d7b2438d3 318 V(8C,61,D7,9A), V(7A,0C,A1,37), V(8E,14,F8,59), V(89,3C,13,EB), \
switches 0:5c4d7b2438d3 319 V(EE,27,A9,CE), V(35,C9,61,B7), V(ED,E5,1C,E1), V(3C,B1,47,7A), \
switches 0:5c4d7b2438d3 320 V(59,DF,D2,9C), V(3F,73,F2,55), V(79,CE,14,18), V(BF,37,C7,73), \
switches 0:5c4d7b2438d3 321 V(EA,CD,F7,53), V(5B,AA,FD,5F), V(14,6F,3D,DF), V(86,DB,44,78), \
switches 0:5c4d7b2438d3 322 V(81,F3,AF,CA), V(3E,C4,68,B9), V(2C,34,24,38), V(5F,40,A3,C2), \
switches 0:5c4d7b2438d3 323 V(72,C3,1D,16), V(0C,25,E2,BC), V(8B,49,3C,28), V(41,95,0D,FF), \
switches 0:5c4d7b2438d3 324 V(71,01,A8,39), V(DE,B3,0C,08), V(9C,E4,B4,D8), V(90,C1,56,64), \
switches 0:5c4d7b2438d3 325 V(61,84,CB,7B), V(70,B6,32,D5), V(74,5C,6C,48), V(42,57,B8,D0)
switches 0:5c4d7b2438d3 326
switches 0:5c4d7b2438d3 327 #define V(a,b,c,d) 0x##a##b##c##d
switches 0:5c4d7b2438d3 328 static const uint32_t RT0[256] = { RT };
switches 0:5c4d7b2438d3 329 #undef V
switches 0:5c4d7b2438d3 330
switches 0:5c4d7b2438d3 331 #define V(a,b,c,d) 0x##b##c##d##a
switches 0:5c4d7b2438d3 332 static const uint32_t RT1[256] = { RT };
switches 0:5c4d7b2438d3 333 #undef V
switches 0:5c4d7b2438d3 334
switches 0:5c4d7b2438d3 335 #define V(a,b,c,d) 0x##c##d##a##b
switches 0:5c4d7b2438d3 336 static const uint32_t RT2[256] = { RT };
switches 0:5c4d7b2438d3 337 #undef V
switches 0:5c4d7b2438d3 338
switches 0:5c4d7b2438d3 339 #define V(a,b,c,d) 0x##d##a##b##c
switches 0:5c4d7b2438d3 340 static const uint32_t RT3[256] = { RT };
switches 0:5c4d7b2438d3 341 #undef V
switches 0:5c4d7b2438d3 342
switches 0:5c4d7b2438d3 343 #undef RT
switches 0:5c4d7b2438d3 344
switches 0:5c4d7b2438d3 345 /*
switches 0:5c4d7b2438d3 346 * Round constants
switches 0:5c4d7b2438d3 347 */
switches 0:5c4d7b2438d3 348 static const uint32_t RCON[10] =
switches 0:5c4d7b2438d3 349 {
switches 0:5c4d7b2438d3 350 0x00000001, 0x00000002, 0x00000004, 0x00000008,
switches 0:5c4d7b2438d3 351 0x00000010, 0x00000020, 0x00000040, 0x00000080,
switches 0:5c4d7b2438d3 352 0x0000001B, 0x00000036
switches 0:5c4d7b2438d3 353 };
switches 0:5c4d7b2438d3 354
switches 0:5c4d7b2438d3 355 #else /* MBEDTLS_AES_ROM_TABLES */
switches 0:5c4d7b2438d3 356
switches 0:5c4d7b2438d3 357 /*
switches 0:5c4d7b2438d3 358 * Forward S-box & tables
switches 0:5c4d7b2438d3 359 */
switches 0:5c4d7b2438d3 360 static unsigned char FSb[256];
switches 0:5c4d7b2438d3 361 static uint32_t FT0[256];
switches 0:5c4d7b2438d3 362 static uint32_t FT1[256];
switches 0:5c4d7b2438d3 363 static uint32_t FT2[256];
switches 0:5c4d7b2438d3 364 static uint32_t FT3[256];
switches 0:5c4d7b2438d3 365
switches 0:5c4d7b2438d3 366 /*
switches 0:5c4d7b2438d3 367 * Reverse S-box & tables
switches 0:5c4d7b2438d3 368 */
switches 0:5c4d7b2438d3 369 static unsigned char RSb[256];
switches 0:5c4d7b2438d3 370 static uint32_t RT0[256];
switches 0:5c4d7b2438d3 371 static uint32_t RT1[256];
switches 0:5c4d7b2438d3 372 static uint32_t RT2[256];
switches 0:5c4d7b2438d3 373 static uint32_t RT3[256];
switches 0:5c4d7b2438d3 374
switches 0:5c4d7b2438d3 375 /*
switches 0:5c4d7b2438d3 376 * Round constants
switches 0:5c4d7b2438d3 377 */
switches 0:5c4d7b2438d3 378 static uint32_t RCON[10];
switches 0:5c4d7b2438d3 379
switches 0:5c4d7b2438d3 380 /*
switches 0:5c4d7b2438d3 381 * Tables generation code
switches 0:5c4d7b2438d3 382 */
switches 0:5c4d7b2438d3 383 #define ROTL8(x) ( ( x << 8 ) & 0xFFFFFFFF ) | ( x >> 24 )
switches 0:5c4d7b2438d3 384 #define XTIME(x) ( ( x << 1 ) ^ ( ( x & 0x80 ) ? 0x1B : 0x00 ) )
switches 0:5c4d7b2438d3 385 #define MUL(x,y) ( ( x && y ) ? pow[(log[x]+log[y]) % 255] : 0 )
switches 0:5c4d7b2438d3 386
switches 0:5c4d7b2438d3 387 static int aes_init_done = 0;
switches 0:5c4d7b2438d3 388
switches 0:5c4d7b2438d3 389 static void aes_gen_tables( void )
switches 0:5c4d7b2438d3 390 {
switches 0:5c4d7b2438d3 391 int i, x, y, z;
switches 0:5c4d7b2438d3 392 int pow[256];
switches 0:5c4d7b2438d3 393 int log[256];
switches 0:5c4d7b2438d3 394
switches 0:5c4d7b2438d3 395 /*
switches 0:5c4d7b2438d3 396 * compute pow and log tables over GF(2^8)
switches 0:5c4d7b2438d3 397 */
switches 0:5c4d7b2438d3 398 for( i = 0, x = 1; i < 256; i++ )
switches 0:5c4d7b2438d3 399 {
switches 0:5c4d7b2438d3 400 pow[i] = x;
switches 0:5c4d7b2438d3 401 log[x] = i;
switches 0:5c4d7b2438d3 402 x = ( x ^ XTIME( x ) ) & 0xFF;
switches 0:5c4d7b2438d3 403 }
switches 0:5c4d7b2438d3 404
switches 0:5c4d7b2438d3 405 /*
switches 0:5c4d7b2438d3 406 * calculate the round constants
switches 0:5c4d7b2438d3 407 */
switches 0:5c4d7b2438d3 408 for( i = 0, x = 1; i < 10; i++ )
switches 0:5c4d7b2438d3 409 {
switches 0:5c4d7b2438d3 410 RCON[i] = (uint32_t) x;
switches 0:5c4d7b2438d3 411 x = XTIME( x ) & 0xFF;
switches 0:5c4d7b2438d3 412 }
switches 0:5c4d7b2438d3 413
switches 0:5c4d7b2438d3 414 /*
switches 0:5c4d7b2438d3 415 * generate the forward and reverse S-boxes
switches 0:5c4d7b2438d3 416 */
switches 0:5c4d7b2438d3 417 FSb[0x00] = 0x63;
switches 0:5c4d7b2438d3 418 RSb[0x63] = 0x00;
switches 0:5c4d7b2438d3 419
switches 0:5c4d7b2438d3 420 for( i = 1; i < 256; i++ )
switches 0:5c4d7b2438d3 421 {
switches 0:5c4d7b2438d3 422 x = pow[255 - log[i]];
switches 0:5c4d7b2438d3 423
switches 0:5c4d7b2438d3 424 y = x; y = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
switches 0:5c4d7b2438d3 425 x ^= y; y = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
switches 0:5c4d7b2438d3 426 x ^= y; y = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
switches 0:5c4d7b2438d3 427 x ^= y; y = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
switches 0:5c4d7b2438d3 428 x ^= y ^ 0x63;
switches 0:5c4d7b2438d3 429
switches 0:5c4d7b2438d3 430 FSb[i] = (unsigned char) x;
switches 0:5c4d7b2438d3 431 RSb[x] = (unsigned char) i;
switches 0:5c4d7b2438d3 432 }
switches 0:5c4d7b2438d3 433
switches 0:5c4d7b2438d3 434 /*
switches 0:5c4d7b2438d3 435 * generate the forward and reverse tables
switches 0:5c4d7b2438d3 436 */
switches 0:5c4d7b2438d3 437 for( i = 0; i < 256; i++ )
switches 0:5c4d7b2438d3 438 {
switches 0:5c4d7b2438d3 439 x = FSb[i];
switches 0:5c4d7b2438d3 440 y = XTIME( x ) & 0xFF;
switches 0:5c4d7b2438d3 441 z = ( y ^ x ) & 0xFF;
switches 0:5c4d7b2438d3 442
switches 0:5c4d7b2438d3 443 FT0[i] = ( (uint32_t) y ) ^
switches 0:5c4d7b2438d3 444 ( (uint32_t) x << 8 ) ^
switches 0:5c4d7b2438d3 445 ( (uint32_t) x << 16 ) ^
switches 0:5c4d7b2438d3 446 ( (uint32_t) z << 24 );
switches 0:5c4d7b2438d3 447
switches 0:5c4d7b2438d3 448 FT1[i] = ROTL8( FT0[i] );
switches 0:5c4d7b2438d3 449 FT2[i] = ROTL8( FT1[i] );
switches 0:5c4d7b2438d3 450 FT3[i] = ROTL8( FT2[i] );
switches 0:5c4d7b2438d3 451
switches 0:5c4d7b2438d3 452 x = RSb[i];
switches 0:5c4d7b2438d3 453
switches 0:5c4d7b2438d3 454 RT0[i] = ( (uint32_t) MUL( 0x0E, x ) ) ^
switches 0:5c4d7b2438d3 455 ( (uint32_t) MUL( 0x09, x ) << 8 ) ^
switches 0:5c4d7b2438d3 456 ( (uint32_t) MUL( 0x0D, x ) << 16 ) ^
switches 0:5c4d7b2438d3 457 ( (uint32_t) MUL( 0x0B, x ) << 24 );
switches 0:5c4d7b2438d3 458
switches 0:5c4d7b2438d3 459 RT1[i] = ROTL8( RT0[i] );
switches 0:5c4d7b2438d3 460 RT2[i] = ROTL8( RT1[i] );
switches 0:5c4d7b2438d3 461 RT3[i] = ROTL8( RT2[i] );
switches 0:5c4d7b2438d3 462 }
switches 0:5c4d7b2438d3 463 }
switches 0:5c4d7b2438d3 464
switches 0:5c4d7b2438d3 465 #endif /* MBEDTLS_AES_ROM_TABLES */
switches 0:5c4d7b2438d3 466
switches 0:5c4d7b2438d3 467 void mbedtls_aes_init( mbedtls_aes_context *ctx )
switches 0:5c4d7b2438d3 468 {
switches 0:5c4d7b2438d3 469 memset( ctx, 0, sizeof( mbedtls_aes_context ) );
switches 0:5c4d7b2438d3 470 }
switches 0:5c4d7b2438d3 471
switches 0:5c4d7b2438d3 472 void mbedtls_aes_free( mbedtls_aes_context *ctx )
switches 0:5c4d7b2438d3 473 {
switches 0:5c4d7b2438d3 474 if( ctx == NULL )
switches 0:5c4d7b2438d3 475 return;
switches 0:5c4d7b2438d3 476
switches 0:5c4d7b2438d3 477 mbedtls_zeroize( ctx, sizeof( mbedtls_aes_context ) );
switches 0:5c4d7b2438d3 478 }
switches 0:5c4d7b2438d3 479
switches 0:5c4d7b2438d3 480 /*
switches 0:5c4d7b2438d3 481 * AES key schedule (encryption)
switches 0:5c4d7b2438d3 482 */
switches 0:5c4d7b2438d3 483 #if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
switches 0:5c4d7b2438d3 484 int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
switches 0:5c4d7b2438d3 485 unsigned int keybits )
switches 0:5c4d7b2438d3 486 {
switches 0:5c4d7b2438d3 487 unsigned int i;
switches 0:5c4d7b2438d3 488 uint32_t *RK;
switches 0:5c4d7b2438d3 489
switches 0:5c4d7b2438d3 490 #if !defined(MBEDTLS_AES_ROM_TABLES)
switches 0:5c4d7b2438d3 491 if( aes_init_done == 0 )
switches 0:5c4d7b2438d3 492 {
switches 0:5c4d7b2438d3 493 aes_gen_tables();
switches 0:5c4d7b2438d3 494 aes_init_done = 1;
switches 0:5c4d7b2438d3 495
switches 0:5c4d7b2438d3 496 }
switches 0:5c4d7b2438d3 497 #endif
switches 0:5c4d7b2438d3 498
switches 0:5c4d7b2438d3 499 switch( keybits )
switches 0:5c4d7b2438d3 500 {
switches 0:5c4d7b2438d3 501 case 128: ctx->nr = 10; break;
switches 0:5c4d7b2438d3 502 case 192: ctx->nr = 12; break;
switches 0:5c4d7b2438d3 503 case 256: ctx->nr = 14; break;
switches 0:5c4d7b2438d3 504 default : return( MBEDTLS_ERR_AES_INVALID_KEY_LENGTH );
switches 0:5c4d7b2438d3 505 }
switches 0:5c4d7b2438d3 506
switches 0:5c4d7b2438d3 507 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16)
switches 0:5c4d7b2438d3 508 if( aes_padlock_ace == -1 )
switches 0:5c4d7b2438d3 509 aes_padlock_ace = mbedtls_padlock_has_support( MBEDTLS_PADLOCK_ACE );
switches 0:5c4d7b2438d3 510
switches 0:5c4d7b2438d3 511 if( aes_padlock_ace )
switches 0:5c4d7b2438d3 512 ctx->rk = RK = MBEDTLS_PADLOCK_ALIGN16( ctx->buf );
switches 0:5c4d7b2438d3 513 else
switches 0:5c4d7b2438d3 514 #endif
switches 0:5c4d7b2438d3 515 ctx->rk = RK = ctx->buf;
switches 0:5c4d7b2438d3 516
switches 0:5c4d7b2438d3 517 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
switches 0:5c4d7b2438d3 518 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_AES ) )
switches 0:5c4d7b2438d3 519 return( mbedtls_aesni_setkey_enc( (unsigned char *) ctx->rk, key, keybits ) );
switches 0:5c4d7b2438d3 520 #endif
switches 0:5c4d7b2438d3 521
switches 0:5c4d7b2438d3 522 for( i = 0; i < ( keybits >> 5 ); i++ )
switches 0:5c4d7b2438d3 523 {
switches 0:5c4d7b2438d3 524 GET_UINT32_LE( RK[i], key, i << 2 );
switches 0:5c4d7b2438d3 525 }
switches 0:5c4d7b2438d3 526
switches 0:5c4d7b2438d3 527 switch( ctx->nr )
switches 0:5c4d7b2438d3 528 {
switches 0:5c4d7b2438d3 529 case 10:
switches 0:5c4d7b2438d3 530
switches 0:5c4d7b2438d3 531 for( i = 0; i < 10; i++, RK += 4 )
switches 0:5c4d7b2438d3 532 {
switches 0:5c4d7b2438d3 533 RK[4] = RK[0] ^ RCON[i] ^
switches 0:5c4d7b2438d3 534 ( (uint32_t) FSb[ ( RK[3] >> 8 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 535 ( (uint32_t) FSb[ ( RK[3] >> 16 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 536 ( (uint32_t) FSb[ ( RK[3] >> 24 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 537 ( (uint32_t) FSb[ ( RK[3] ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 538
switches 0:5c4d7b2438d3 539 RK[5] = RK[1] ^ RK[4];
switches 0:5c4d7b2438d3 540 RK[6] = RK[2] ^ RK[5];
switches 0:5c4d7b2438d3 541 RK[7] = RK[3] ^ RK[6];
switches 0:5c4d7b2438d3 542 }
switches 0:5c4d7b2438d3 543 break;
switches 0:5c4d7b2438d3 544
switches 0:5c4d7b2438d3 545 case 12:
switches 0:5c4d7b2438d3 546
switches 0:5c4d7b2438d3 547 for( i = 0; i < 8; i++, RK += 6 )
switches 0:5c4d7b2438d3 548 {
switches 0:5c4d7b2438d3 549 RK[6] = RK[0] ^ RCON[i] ^
switches 0:5c4d7b2438d3 550 ( (uint32_t) FSb[ ( RK[5] >> 8 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 551 ( (uint32_t) FSb[ ( RK[5] >> 16 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 552 ( (uint32_t) FSb[ ( RK[5] >> 24 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 553 ( (uint32_t) FSb[ ( RK[5] ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 554
switches 0:5c4d7b2438d3 555 RK[7] = RK[1] ^ RK[6];
switches 0:5c4d7b2438d3 556 RK[8] = RK[2] ^ RK[7];
switches 0:5c4d7b2438d3 557 RK[9] = RK[3] ^ RK[8];
switches 0:5c4d7b2438d3 558 RK[10] = RK[4] ^ RK[9];
switches 0:5c4d7b2438d3 559 RK[11] = RK[5] ^ RK[10];
switches 0:5c4d7b2438d3 560 }
switches 0:5c4d7b2438d3 561 break;
switches 0:5c4d7b2438d3 562
switches 0:5c4d7b2438d3 563 case 14:
switches 0:5c4d7b2438d3 564
switches 0:5c4d7b2438d3 565 for( i = 0; i < 7; i++, RK += 8 )
switches 0:5c4d7b2438d3 566 {
switches 0:5c4d7b2438d3 567 RK[8] = RK[0] ^ RCON[i] ^
switches 0:5c4d7b2438d3 568 ( (uint32_t) FSb[ ( RK[7] >> 8 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 569 ( (uint32_t) FSb[ ( RK[7] >> 16 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 570 ( (uint32_t) FSb[ ( RK[7] >> 24 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 571 ( (uint32_t) FSb[ ( RK[7] ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 572
switches 0:5c4d7b2438d3 573 RK[9] = RK[1] ^ RK[8];
switches 0:5c4d7b2438d3 574 RK[10] = RK[2] ^ RK[9];
switches 0:5c4d7b2438d3 575 RK[11] = RK[3] ^ RK[10];
switches 0:5c4d7b2438d3 576
switches 0:5c4d7b2438d3 577 RK[12] = RK[4] ^
switches 0:5c4d7b2438d3 578 ( (uint32_t) FSb[ ( RK[11] ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 579 ( (uint32_t) FSb[ ( RK[11] >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 580 ( (uint32_t) FSb[ ( RK[11] >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 581 ( (uint32_t) FSb[ ( RK[11] >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 582
switches 0:5c4d7b2438d3 583 RK[13] = RK[5] ^ RK[12];
switches 0:5c4d7b2438d3 584 RK[14] = RK[6] ^ RK[13];
switches 0:5c4d7b2438d3 585 RK[15] = RK[7] ^ RK[14];
switches 0:5c4d7b2438d3 586 }
switches 0:5c4d7b2438d3 587 break;
switches 0:5c4d7b2438d3 588 }
switches 0:5c4d7b2438d3 589
switches 0:5c4d7b2438d3 590 return( 0 );
switches 0:5c4d7b2438d3 591 }
switches 0:5c4d7b2438d3 592 #endif /* !MBEDTLS_AES_SETKEY_ENC_ALT */
switches 0:5c4d7b2438d3 593
switches 0:5c4d7b2438d3 594 /*
switches 0:5c4d7b2438d3 595 * AES key schedule (decryption)
switches 0:5c4d7b2438d3 596 */
switches 0:5c4d7b2438d3 597 #if !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
switches 0:5c4d7b2438d3 598 int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key,
switches 0:5c4d7b2438d3 599 unsigned int keybits )
switches 0:5c4d7b2438d3 600 {
switches 0:5c4d7b2438d3 601 int i, j, ret;
switches 0:5c4d7b2438d3 602 mbedtls_aes_context cty;
switches 0:5c4d7b2438d3 603 uint32_t *RK;
switches 0:5c4d7b2438d3 604 uint32_t *SK;
switches 0:5c4d7b2438d3 605
switches 0:5c4d7b2438d3 606 mbedtls_aes_init( &cty );
switches 0:5c4d7b2438d3 607
switches 0:5c4d7b2438d3 608 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16)
switches 0:5c4d7b2438d3 609 if( aes_padlock_ace == -1 )
switches 0:5c4d7b2438d3 610 aes_padlock_ace = mbedtls_padlock_has_support( MBEDTLS_PADLOCK_ACE );
switches 0:5c4d7b2438d3 611
switches 0:5c4d7b2438d3 612 if( aes_padlock_ace )
switches 0:5c4d7b2438d3 613 ctx->rk = RK = MBEDTLS_PADLOCK_ALIGN16( ctx->buf );
switches 0:5c4d7b2438d3 614 else
switches 0:5c4d7b2438d3 615 #endif
switches 0:5c4d7b2438d3 616 ctx->rk = RK = ctx->buf;
switches 0:5c4d7b2438d3 617
switches 0:5c4d7b2438d3 618 /* Also checks keybits */
switches 0:5c4d7b2438d3 619 if( ( ret = mbedtls_aes_setkey_enc( &cty, key, keybits ) ) != 0 )
switches 0:5c4d7b2438d3 620 goto exit;
switches 0:5c4d7b2438d3 621
switches 0:5c4d7b2438d3 622 ctx->nr = cty.nr;
switches 0:5c4d7b2438d3 623
switches 0:5c4d7b2438d3 624 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
switches 0:5c4d7b2438d3 625 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_AES ) )
switches 0:5c4d7b2438d3 626 {
switches 0:5c4d7b2438d3 627 mbedtls_aesni_inverse_key( (unsigned char *) ctx->rk,
switches 0:5c4d7b2438d3 628 (const unsigned char *) cty.rk, ctx->nr );
switches 0:5c4d7b2438d3 629 goto exit;
switches 0:5c4d7b2438d3 630 }
switches 0:5c4d7b2438d3 631 #endif
switches 0:5c4d7b2438d3 632
switches 0:5c4d7b2438d3 633 SK = cty.rk + cty.nr * 4;
switches 0:5c4d7b2438d3 634
switches 0:5c4d7b2438d3 635 *RK++ = *SK++;
switches 0:5c4d7b2438d3 636 *RK++ = *SK++;
switches 0:5c4d7b2438d3 637 *RK++ = *SK++;
switches 0:5c4d7b2438d3 638 *RK++ = *SK++;
switches 0:5c4d7b2438d3 639
switches 0:5c4d7b2438d3 640 for( i = ctx->nr - 1, SK -= 8; i > 0; i--, SK -= 8 )
switches 0:5c4d7b2438d3 641 {
switches 0:5c4d7b2438d3 642 for( j = 0; j < 4; j++, SK++ )
switches 0:5c4d7b2438d3 643 {
switches 0:5c4d7b2438d3 644 *RK++ = RT0[ FSb[ ( *SK ) & 0xFF ] ] ^
switches 0:5c4d7b2438d3 645 RT1[ FSb[ ( *SK >> 8 ) & 0xFF ] ] ^
switches 0:5c4d7b2438d3 646 RT2[ FSb[ ( *SK >> 16 ) & 0xFF ] ] ^
switches 0:5c4d7b2438d3 647 RT3[ FSb[ ( *SK >> 24 ) & 0xFF ] ];
switches 0:5c4d7b2438d3 648 }
switches 0:5c4d7b2438d3 649 }
switches 0:5c4d7b2438d3 650
switches 0:5c4d7b2438d3 651 *RK++ = *SK++;
switches 0:5c4d7b2438d3 652 *RK++ = *SK++;
switches 0:5c4d7b2438d3 653 *RK++ = *SK++;
switches 0:5c4d7b2438d3 654 *RK++ = *SK++;
switches 0:5c4d7b2438d3 655
switches 0:5c4d7b2438d3 656 exit:
switches 0:5c4d7b2438d3 657 mbedtls_aes_free( &cty );
switches 0:5c4d7b2438d3 658
switches 0:5c4d7b2438d3 659 return( ret );
switches 0:5c4d7b2438d3 660 }
switches 0:5c4d7b2438d3 661 #endif /* !MBEDTLS_AES_SETKEY_DEC_ALT */
switches 0:5c4d7b2438d3 662
switches 0:5c4d7b2438d3 663 #define AES_FROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
switches 0:5c4d7b2438d3 664 { \
switches 0:5c4d7b2438d3 665 X0 = *RK++ ^ FT0[ ( Y0 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 666 FT1[ ( Y1 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 667 FT2[ ( Y2 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 668 FT3[ ( Y3 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 669 \
switches 0:5c4d7b2438d3 670 X1 = *RK++ ^ FT0[ ( Y1 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 671 FT1[ ( Y2 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 672 FT2[ ( Y3 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 673 FT3[ ( Y0 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 674 \
switches 0:5c4d7b2438d3 675 X2 = *RK++ ^ FT0[ ( Y2 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 676 FT1[ ( Y3 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 677 FT2[ ( Y0 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 678 FT3[ ( Y1 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 679 \
switches 0:5c4d7b2438d3 680 X3 = *RK++ ^ FT0[ ( Y3 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 681 FT1[ ( Y0 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 682 FT2[ ( Y1 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 683 FT3[ ( Y2 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 684 }
switches 0:5c4d7b2438d3 685
switches 0:5c4d7b2438d3 686 #define AES_RROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
switches 0:5c4d7b2438d3 687 { \
switches 0:5c4d7b2438d3 688 X0 = *RK++ ^ RT0[ ( Y0 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 689 RT1[ ( Y3 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 690 RT2[ ( Y2 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 691 RT3[ ( Y1 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 692 \
switches 0:5c4d7b2438d3 693 X1 = *RK++ ^ RT0[ ( Y1 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 694 RT1[ ( Y0 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 695 RT2[ ( Y3 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 696 RT3[ ( Y2 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 697 \
switches 0:5c4d7b2438d3 698 X2 = *RK++ ^ RT0[ ( Y2 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 699 RT1[ ( Y1 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 700 RT2[ ( Y0 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 701 RT3[ ( Y3 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 702 \
switches 0:5c4d7b2438d3 703 X3 = *RK++ ^ RT0[ ( Y3 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 704 RT1[ ( Y2 >> 8 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 705 RT2[ ( Y1 >> 16 ) & 0xFF ] ^ \
switches 0:5c4d7b2438d3 706 RT3[ ( Y0 >> 24 ) & 0xFF ]; \
switches 0:5c4d7b2438d3 707 }
switches 0:5c4d7b2438d3 708
switches 0:5c4d7b2438d3 709 /*
switches 0:5c4d7b2438d3 710 * AES-ECB block encryption
switches 0:5c4d7b2438d3 711 */
switches 0:5c4d7b2438d3 712 #if !defined(MBEDTLS_AES_ENCRYPT_ALT)
switches 0:5c4d7b2438d3 713 void mbedtls_aes_encrypt( mbedtls_aes_context *ctx,
switches 0:5c4d7b2438d3 714 const unsigned char input[16],
switches 0:5c4d7b2438d3 715 unsigned char output[16] )
switches 0:5c4d7b2438d3 716 {
switches 0:5c4d7b2438d3 717 int i;
switches 0:5c4d7b2438d3 718 uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
switches 0:5c4d7b2438d3 719
switches 0:5c4d7b2438d3 720 RK = ctx->rk;
switches 0:5c4d7b2438d3 721
switches 0:5c4d7b2438d3 722 GET_UINT32_LE( X0, input, 0 ); X0 ^= *RK++;
switches 0:5c4d7b2438d3 723 GET_UINT32_LE( X1, input, 4 ); X1 ^= *RK++;
switches 0:5c4d7b2438d3 724 GET_UINT32_LE( X2, input, 8 ); X2 ^= *RK++;
switches 0:5c4d7b2438d3 725 GET_UINT32_LE( X3, input, 12 ); X3 ^= *RK++;
switches 0:5c4d7b2438d3 726
switches 0:5c4d7b2438d3 727 for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
switches 0:5c4d7b2438d3 728 {
switches 0:5c4d7b2438d3 729 AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
switches 0:5c4d7b2438d3 730 AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 );
switches 0:5c4d7b2438d3 731 }
switches 0:5c4d7b2438d3 732
switches 0:5c4d7b2438d3 733 AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
switches 0:5c4d7b2438d3 734
switches 0:5c4d7b2438d3 735 X0 = *RK++ ^ \
switches 0:5c4d7b2438d3 736 ( (uint32_t) FSb[ ( Y0 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 737 ( (uint32_t) FSb[ ( Y1 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 738 ( (uint32_t) FSb[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 739 ( (uint32_t) FSb[ ( Y3 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 740
switches 0:5c4d7b2438d3 741 X1 = *RK++ ^ \
switches 0:5c4d7b2438d3 742 ( (uint32_t) FSb[ ( Y1 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 743 ( (uint32_t) FSb[ ( Y2 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 744 ( (uint32_t) FSb[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 745 ( (uint32_t) FSb[ ( Y0 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 746
switches 0:5c4d7b2438d3 747 X2 = *RK++ ^ \
switches 0:5c4d7b2438d3 748 ( (uint32_t) FSb[ ( Y2 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 749 ( (uint32_t) FSb[ ( Y3 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 750 ( (uint32_t) FSb[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 751 ( (uint32_t) FSb[ ( Y1 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 752
switches 0:5c4d7b2438d3 753 X3 = *RK++ ^ \
switches 0:5c4d7b2438d3 754 ( (uint32_t) FSb[ ( Y3 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 755 ( (uint32_t) FSb[ ( Y0 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 756 ( (uint32_t) FSb[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 757 ( (uint32_t) FSb[ ( Y2 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 758
switches 0:5c4d7b2438d3 759 PUT_UINT32_LE( X0, output, 0 );
switches 0:5c4d7b2438d3 760 PUT_UINT32_LE( X1, output, 4 );
switches 0:5c4d7b2438d3 761 PUT_UINT32_LE( X2, output, 8 );
switches 0:5c4d7b2438d3 762 PUT_UINT32_LE( X3, output, 12 );
switches 0:5c4d7b2438d3 763 }
switches 0:5c4d7b2438d3 764 #endif /* !MBEDTLS_AES_ENCRYPT_ALT */
switches 0:5c4d7b2438d3 765
switches 0:5c4d7b2438d3 766 /*
switches 0:5c4d7b2438d3 767 * AES-ECB block decryption
switches 0:5c4d7b2438d3 768 */
switches 0:5c4d7b2438d3 769 #if !defined(MBEDTLS_AES_DECRYPT_ALT)
switches 0:5c4d7b2438d3 770 void mbedtls_aes_decrypt( mbedtls_aes_context *ctx,
switches 0:5c4d7b2438d3 771 const unsigned char input[16],
switches 0:5c4d7b2438d3 772 unsigned char output[16] )
switches 0:5c4d7b2438d3 773 {
switches 0:5c4d7b2438d3 774 int i;
switches 0:5c4d7b2438d3 775 uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
switches 0:5c4d7b2438d3 776
switches 0:5c4d7b2438d3 777 RK = ctx->rk;
switches 0:5c4d7b2438d3 778
switches 0:5c4d7b2438d3 779 GET_UINT32_LE( X0, input, 0 ); X0 ^= *RK++;
switches 0:5c4d7b2438d3 780 GET_UINT32_LE( X1, input, 4 ); X1 ^= *RK++;
switches 0:5c4d7b2438d3 781 GET_UINT32_LE( X2, input, 8 ); X2 ^= *RK++;
switches 0:5c4d7b2438d3 782 GET_UINT32_LE( X3, input, 12 ); X3 ^= *RK++;
switches 0:5c4d7b2438d3 783
switches 0:5c4d7b2438d3 784 for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
switches 0:5c4d7b2438d3 785 {
switches 0:5c4d7b2438d3 786 AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
switches 0:5c4d7b2438d3 787 AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 );
switches 0:5c4d7b2438d3 788 }
switches 0:5c4d7b2438d3 789
switches 0:5c4d7b2438d3 790 AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
switches 0:5c4d7b2438d3 791
switches 0:5c4d7b2438d3 792 X0 = *RK++ ^ \
switches 0:5c4d7b2438d3 793 ( (uint32_t) RSb[ ( Y0 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 794 ( (uint32_t) RSb[ ( Y3 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 795 ( (uint32_t) RSb[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 796 ( (uint32_t) RSb[ ( Y1 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 797
switches 0:5c4d7b2438d3 798 X1 = *RK++ ^ \
switches 0:5c4d7b2438d3 799 ( (uint32_t) RSb[ ( Y1 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 800 ( (uint32_t) RSb[ ( Y0 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 801 ( (uint32_t) RSb[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 802 ( (uint32_t) RSb[ ( Y2 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 803
switches 0:5c4d7b2438d3 804 X2 = *RK++ ^ \
switches 0:5c4d7b2438d3 805 ( (uint32_t) RSb[ ( Y2 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 806 ( (uint32_t) RSb[ ( Y1 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 807 ( (uint32_t) RSb[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 808 ( (uint32_t) RSb[ ( Y3 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 809
switches 0:5c4d7b2438d3 810 X3 = *RK++ ^ \
switches 0:5c4d7b2438d3 811 ( (uint32_t) RSb[ ( Y3 ) & 0xFF ] ) ^
switches 0:5c4d7b2438d3 812 ( (uint32_t) RSb[ ( Y2 >> 8 ) & 0xFF ] << 8 ) ^
switches 0:5c4d7b2438d3 813 ( (uint32_t) RSb[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
switches 0:5c4d7b2438d3 814 ( (uint32_t) RSb[ ( Y0 >> 24 ) & 0xFF ] << 24 );
switches 0:5c4d7b2438d3 815
switches 0:5c4d7b2438d3 816 PUT_UINT32_LE( X0, output, 0 );
switches 0:5c4d7b2438d3 817 PUT_UINT32_LE( X1, output, 4 );
switches 0:5c4d7b2438d3 818 PUT_UINT32_LE( X2, output, 8 );
switches 0:5c4d7b2438d3 819 PUT_UINT32_LE( X3, output, 12 );
switches 0:5c4d7b2438d3 820 }
switches 0:5c4d7b2438d3 821 #endif /* !MBEDTLS_AES_DECRYPT_ALT */
switches 0:5c4d7b2438d3 822
switches 0:5c4d7b2438d3 823 /*
switches 0:5c4d7b2438d3 824 * AES-ECB block encryption/decryption
switches 0:5c4d7b2438d3 825 */
switches 0:5c4d7b2438d3 826 int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
switches 0:5c4d7b2438d3 827 int mode,
switches 0:5c4d7b2438d3 828 const unsigned char input[16],
switches 0:5c4d7b2438d3 829 unsigned char output[16] )
switches 0:5c4d7b2438d3 830 {
switches 0:5c4d7b2438d3 831 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
switches 0:5c4d7b2438d3 832 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_AES ) )
switches 0:5c4d7b2438d3 833 return( mbedtls_aesni_crypt_ecb( ctx, mode, input, output ) );
switches 0:5c4d7b2438d3 834 #endif
switches 0:5c4d7b2438d3 835
switches 0:5c4d7b2438d3 836 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
switches 0:5c4d7b2438d3 837 if( aes_padlock_ace )
switches 0:5c4d7b2438d3 838 {
switches 0:5c4d7b2438d3 839 if( mbedtls_padlock_xcryptecb( ctx, mode, input, output ) == 0 )
switches 0:5c4d7b2438d3 840 return( 0 );
switches 0:5c4d7b2438d3 841
switches 0:5c4d7b2438d3 842 // If padlock data misaligned, we just fall back to
switches 0:5c4d7b2438d3 843 // unaccelerated mode
switches 0:5c4d7b2438d3 844 //
switches 0:5c4d7b2438d3 845 }
switches 0:5c4d7b2438d3 846 #endif
switches 0:5c4d7b2438d3 847
switches 0:5c4d7b2438d3 848 if( mode == MBEDTLS_AES_ENCRYPT )
switches 0:5c4d7b2438d3 849 mbedtls_aes_encrypt( ctx, input, output );
switches 0:5c4d7b2438d3 850 else
switches 0:5c4d7b2438d3 851 mbedtls_aes_decrypt( ctx, input, output );
switches 0:5c4d7b2438d3 852
switches 0:5c4d7b2438d3 853 return( 0 );
switches 0:5c4d7b2438d3 854 }
switches 0:5c4d7b2438d3 855
switches 0:5c4d7b2438d3 856 #if defined(MBEDTLS_CIPHER_MODE_CBC)
switches 0:5c4d7b2438d3 857 /*
switches 0:5c4d7b2438d3 858 * AES-CBC buffer encryption/decryption
switches 0:5c4d7b2438d3 859 */
switches 0:5c4d7b2438d3 860 int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
switches 0:5c4d7b2438d3 861 int mode,
switches 0:5c4d7b2438d3 862 size_t length,
switches 0:5c4d7b2438d3 863 unsigned char iv[16],
switches 0:5c4d7b2438d3 864 const unsigned char *input,
switches 0:5c4d7b2438d3 865 unsigned char *output )
switches 0:5c4d7b2438d3 866 {
switches 0:5c4d7b2438d3 867 int i;
switches 0:5c4d7b2438d3 868 unsigned char temp[16];
switches 0:5c4d7b2438d3 869
switches 0:5c4d7b2438d3 870 if( length % 16 )
switches 0:5c4d7b2438d3 871 return( MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH );
switches 0:5c4d7b2438d3 872
switches 0:5c4d7b2438d3 873 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
switches 0:5c4d7b2438d3 874 if( aes_padlock_ace )
switches 0:5c4d7b2438d3 875 {
switches 0:5c4d7b2438d3 876 if( mbedtls_padlock_xcryptcbc( ctx, mode, length, iv, input, output ) == 0 )
switches 0:5c4d7b2438d3 877 return( 0 );
switches 0:5c4d7b2438d3 878
switches 0:5c4d7b2438d3 879 // If padlock data misaligned, we just fall back to
switches 0:5c4d7b2438d3 880 // unaccelerated mode
switches 0:5c4d7b2438d3 881 //
switches 0:5c4d7b2438d3 882 }
switches 0:5c4d7b2438d3 883 #endif
switches 0:5c4d7b2438d3 884
switches 0:5c4d7b2438d3 885 if( mode == MBEDTLS_AES_DECRYPT )
switches 0:5c4d7b2438d3 886 {
switches 0:5c4d7b2438d3 887 while( length > 0 )
switches 0:5c4d7b2438d3 888 {
switches 0:5c4d7b2438d3 889 memcpy( temp, input, 16 );
switches 0:5c4d7b2438d3 890 mbedtls_aes_crypt_ecb( ctx, mode, input, output );
switches 0:5c4d7b2438d3 891
switches 0:5c4d7b2438d3 892 for( i = 0; i < 16; i++ )
switches 0:5c4d7b2438d3 893 output[i] = (unsigned char)( output[i] ^ iv[i] );
switches 0:5c4d7b2438d3 894
switches 0:5c4d7b2438d3 895 memcpy( iv, temp, 16 );
switches 0:5c4d7b2438d3 896
switches 0:5c4d7b2438d3 897 input += 16;
switches 0:5c4d7b2438d3 898 output += 16;
switches 0:5c4d7b2438d3 899 length -= 16;
switches 0:5c4d7b2438d3 900 }
switches 0:5c4d7b2438d3 901 }
switches 0:5c4d7b2438d3 902 else
switches 0:5c4d7b2438d3 903 {
switches 0:5c4d7b2438d3 904 while( length > 0 )
switches 0:5c4d7b2438d3 905 {
switches 0:5c4d7b2438d3 906 for( i = 0; i < 16; i++ )
switches 0:5c4d7b2438d3 907 output[i] = (unsigned char)( input[i] ^ iv[i] );
switches 0:5c4d7b2438d3 908
switches 0:5c4d7b2438d3 909 mbedtls_aes_crypt_ecb( ctx, mode, output, output );
switches 0:5c4d7b2438d3 910 memcpy( iv, output, 16 );
switches 0:5c4d7b2438d3 911
switches 0:5c4d7b2438d3 912 input += 16;
switches 0:5c4d7b2438d3 913 output += 16;
switches 0:5c4d7b2438d3 914 length -= 16;
switches 0:5c4d7b2438d3 915 }
switches 0:5c4d7b2438d3 916 }
switches 0:5c4d7b2438d3 917
switches 0:5c4d7b2438d3 918 return( 0 );
switches 0:5c4d7b2438d3 919 }
switches 0:5c4d7b2438d3 920 #endif /* MBEDTLS_CIPHER_MODE_CBC */
switches 0:5c4d7b2438d3 921
switches 0:5c4d7b2438d3 922 #if defined(MBEDTLS_CIPHER_MODE_CFB)
switches 0:5c4d7b2438d3 923 /*
switches 0:5c4d7b2438d3 924 * AES-CFB128 buffer encryption/decryption
switches 0:5c4d7b2438d3 925 */
switches 0:5c4d7b2438d3 926 int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx,
switches 0:5c4d7b2438d3 927 int mode,
switches 0:5c4d7b2438d3 928 size_t length,
switches 0:5c4d7b2438d3 929 size_t *iv_off,
switches 0:5c4d7b2438d3 930 unsigned char iv[16],
switches 0:5c4d7b2438d3 931 const unsigned char *input,
switches 0:5c4d7b2438d3 932 unsigned char *output )
switches 0:5c4d7b2438d3 933 {
switches 0:5c4d7b2438d3 934 int c;
switches 0:5c4d7b2438d3 935 size_t n = *iv_off;
switches 0:5c4d7b2438d3 936
switches 0:5c4d7b2438d3 937 if( mode == MBEDTLS_AES_DECRYPT )
switches 0:5c4d7b2438d3 938 {
switches 0:5c4d7b2438d3 939 while( length-- )
switches 0:5c4d7b2438d3 940 {
switches 0:5c4d7b2438d3 941 if( n == 0 )
switches 0:5c4d7b2438d3 942 mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv );
switches 0:5c4d7b2438d3 943
switches 0:5c4d7b2438d3 944 c = *input++;
switches 0:5c4d7b2438d3 945 *output++ = (unsigned char)( c ^ iv[n] );
switches 0:5c4d7b2438d3 946 iv[n] = (unsigned char) c;
switches 0:5c4d7b2438d3 947
switches 0:5c4d7b2438d3 948 n = ( n + 1 ) & 0x0F;
switches 0:5c4d7b2438d3 949 }
switches 0:5c4d7b2438d3 950 }
switches 0:5c4d7b2438d3 951 else
switches 0:5c4d7b2438d3 952 {
switches 0:5c4d7b2438d3 953 while( length-- )
switches 0:5c4d7b2438d3 954 {
switches 0:5c4d7b2438d3 955 if( n == 0 )
switches 0:5c4d7b2438d3 956 mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv );
switches 0:5c4d7b2438d3 957
switches 0:5c4d7b2438d3 958 iv[n] = *output++ = (unsigned char)( iv[n] ^ *input++ );
switches 0:5c4d7b2438d3 959
switches 0:5c4d7b2438d3 960 n = ( n + 1 ) & 0x0F;
switches 0:5c4d7b2438d3 961 }
switches 0:5c4d7b2438d3 962 }
switches 0:5c4d7b2438d3 963
switches 0:5c4d7b2438d3 964 *iv_off = n;
switches 0:5c4d7b2438d3 965
switches 0:5c4d7b2438d3 966 return( 0 );
switches 0:5c4d7b2438d3 967 }
switches 0:5c4d7b2438d3 968
switches 0:5c4d7b2438d3 969 /*
switches 0:5c4d7b2438d3 970 * AES-CFB8 buffer encryption/decryption
switches 0:5c4d7b2438d3 971 */
switches 0:5c4d7b2438d3 972 int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx,
switches 0:5c4d7b2438d3 973 int mode,
switches 0:5c4d7b2438d3 974 size_t length,
switches 0:5c4d7b2438d3 975 unsigned char iv[16],
switches 0:5c4d7b2438d3 976 const unsigned char *input,
switches 0:5c4d7b2438d3 977 unsigned char *output )
switches 0:5c4d7b2438d3 978 {
switches 0:5c4d7b2438d3 979 unsigned char c;
switches 0:5c4d7b2438d3 980 unsigned char ov[17];
switches 0:5c4d7b2438d3 981
switches 0:5c4d7b2438d3 982 while( length-- )
switches 0:5c4d7b2438d3 983 {
switches 0:5c4d7b2438d3 984 memcpy( ov, iv, 16 );
switches 0:5c4d7b2438d3 985 mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv );
switches 0:5c4d7b2438d3 986
switches 0:5c4d7b2438d3 987 if( mode == MBEDTLS_AES_DECRYPT )
switches 0:5c4d7b2438d3 988 ov[16] = *input;
switches 0:5c4d7b2438d3 989
switches 0:5c4d7b2438d3 990 c = *output++ = (unsigned char)( iv[0] ^ *input++ );
switches 0:5c4d7b2438d3 991
switches 0:5c4d7b2438d3 992 if( mode == MBEDTLS_AES_ENCRYPT )
switches 0:5c4d7b2438d3 993 ov[16] = c;
switches 0:5c4d7b2438d3 994
switches 0:5c4d7b2438d3 995 memcpy( iv, ov + 1, 16 );
switches 0:5c4d7b2438d3 996 }
switches 0:5c4d7b2438d3 997
switches 0:5c4d7b2438d3 998 return( 0 );
switches 0:5c4d7b2438d3 999 }
switches 0:5c4d7b2438d3 1000 #endif /*MBEDTLS_CIPHER_MODE_CFB */
switches 0:5c4d7b2438d3 1001
switches 0:5c4d7b2438d3 1002 #if defined(MBEDTLS_CIPHER_MODE_CTR)
switches 0:5c4d7b2438d3 1003 /*
switches 0:5c4d7b2438d3 1004 * AES-CTR buffer encryption/decryption
switches 0:5c4d7b2438d3 1005 */
switches 0:5c4d7b2438d3 1006 int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx,
switches 0:5c4d7b2438d3 1007 size_t length,
switches 0:5c4d7b2438d3 1008 size_t *nc_off,
switches 0:5c4d7b2438d3 1009 unsigned char nonce_counter[16],
switches 0:5c4d7b2438d3 1010 unsigned char stream_block[16],
switches 0:5c4d7b2438d3 1011 const unsigned char *input,
switches 0:5c4d7b2438d3 1012 unsigned char *output )
switches 0:5c4d7b2438d3 1013 {
switches 0:5c4d7b2438d3 1014 int c, i;
switches 0:5c4d7b2438d3 1015 size_t n = *nc_off;
switches 0:5c4d7b2438d3 1016
switches 0:5c4d7b2438d3 1017 while( length-- )
switches 0:5c4d7b2438d3 1018 {
switches 0:5c4d7b2438d3 1019 if( n == 0 ) {
switches 0:5c4d7b2438d3 1020 mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, nonce_counter, stream_block );
switches 0:5c4d7b2438d3 1021
switches 0:5c4d7b2438d3 1022 for( i = 16; i > 0; i-- )
switches 0:5c4d7b2438d3 1023 if( ++nonce_counter[i - 1] != 0 )
switches 0:5c4d7b2438d3 1024 break;
switches 0:5c4d7b2438d3 1025 }
switches 0:5c4d7b2438d3 1026 c = *input++;
switches 0:5c4d7b2438d3 1027 *output++ = (unsigned char)( c ^ stream_block[n] );
switches 0:5c4d7b2438d3 1028
switches 0:5c4d7b2438d3 1029 n = ( n + 1 ) & 0x0F;
switches 0:5c4d7b2438d3 1030 }
switches 0:5c4d7b2438d3 1031
switches 0:5c4d7b2438d3 1032 *nc_off = n;
switches 0:5c4d7b2438d3 1033
switches 0:5c4d7b2438d3 1034 return( 0 );
switches 0:5c4d7b2438d3 1035 }
switches 0:5c4d7b2438d3 1036 #endif /* MBEDTLS_CIPHER_MODE_CTR */
switches 0:5c4d7b2438d3 1037
switches 0:5c4d7b2438d3 1038 #endif /* !MBEDTLS_AES_ALT */
switches 0:5c4d7b2438d3 1039
switches 0:5c4d7b2438d3 1040 #if defined(MBEDTLS_SELF_TEST)
switches 0:5c4d7b2438d3 1041 /*
switches 0:5c4d7b2438d3 1042 * AES test vectors from:
switches 0:5c4d7b2438d3 1043 *
switches 0:5c4d7b2438d3 1044 * http://csrc.nist.gov/archive/aes/rijndael/rijndael-vals.zip
switches 0:5c4d7b2438d3 1045 */
switches 0:5c4d7b2438d3 1046 static const unsigned char aes_test_ecb_dec[3][16] =
switches 0:5c4d7b2438d3 1047 {
switches 0:5c4d7b2438d3 1048 { 0x44, 0x41, 0x6A, 0xC2, 0xD1, 0xF5, 0x3C, 0x58,
switches 0:5c4d7b2438d3 1049 0x33, 0x03, 0x91, 0x7E, 0x6B, 0xE9, 0xEB, 0xE0 },
switches 0:5c4d7b2438d3 1050 { 0x48, 0xE3, 0x1E, 0x9E, 0x25, 0x67, 0x18, 0xF2,
switches 0:5c4d7b2438d3 1051 0x92, 0x29, 0x31, 0x9C, 0x19, 0xF1, 0x5B, 0xA4 },
switches 0:5c4d7b2438d3 1052 { 0x05, 0x8C, 0xCF, 0xFD, 0xBB, 0xCB, 0x38, 0x2D,
switches 0:5c4d7b2438d3 1053 0x1F, 0x6F, 0x56, 0x58, 0x5D, 0x8A, 0x4A, 0xDE }
switches 0:5c4d7b2438d3 1054 };
switches 0:5c4d7b2438d3 1055
switches 0:5c4d7b2438d3 1056 static const unsigned char aes_test_ecb_enc[3][16] =
switches 0:5c4d7b2438d3 1057 {
switches 0:5c4d7b2438d3 1058 { 0xC3, 0x4C, 0x05, 0x2C, 0xC0, 0xDA, 0x8D, 0x73,
switches 0:5c4d7b2438d3 1059 0x45, 0x1A, 0xFE, 0x5F, 0x03, 0xBE, 0x29, 0x7F },
switches 0:5c4d7b2438d3 1060 { 0xF3, 0xF6, 0x75, 0x2A, 0xE8, 0xD7, 0x83, 0x11,
switches 0:5c4d7b2438d3 1061 0x38, 0xF0, 0x41, 0x56, 0x06, 0x31, 0xB1, 0x14 },
switches 0:5c4d7b2438d3 1062 { 0x8B, 0x79, 0xEE, 0xCC, 0x93, 0xA0, 0xEE, 0x5D,
switches 0:5c4d7b2438d3 1063 0xFF, 0x30, 0xB4, 0xEA, 0x21, 0x63, 0x6D, 0xA4 }
switches 0:5c4d7b2438d3 1064 };
switches 0:5c4d7b2438d3 1065
switches 0:5c4d7b2438d3 1066 #if defined(MBEDTLS_CIPHER_MODE_CBC)
switches 0:5c4d7b2438d3 1067 static const unsigned char aes_test_cbc_dec[3][16] =
switches 0:5c4d7b2438d3 1068 {
switches 0:5c4d7b2438d3 1069 { 0xFA, 0xCA, 0x37, 0xE0, 0xB0, 0xC8, 0x53, 0x73,
switches 0:5c4d7b2438d3 1070 0xDF, 0x70, 0x6E, 0x73, 0xF7, 0xC9, 0xAF, 0x86 },
switches 0:5c4d7b2438d3 1071 { 0x5D, 0xF6, 0x78, 0xDD, 0x17, 0xBA, 0x4E, 0x75,
switches 0:5c4d7b2438d3 1072 0xB6, 0x17, 0x68, 0xC6, 0xAD, 0xEF, 0x7C, 0x7B },
switches 0:5c4d7b2438d3 1073 { 0x48, 0x04, 0xE1, 0x81, 0x8F, 0xE6, 0x29, 0x75,
switches 0:5c4d7b2438d3 1074 0x19, 0xA3, 0xE8, 0x8C, 0x57, 0x31, 0x04, 0x13 }
switches 0:5c4d7b2438d3 1075 };
switches 0:5c4d7b2438d3 1076
switches 0:5c4d7b2438d3 1077 static const unsigned char aes_test_cbc_enc[3][16] =
switches 0:5c4d7b2438d3 1078 {
switches 0:5c4d7b2438d3 1079 { 0x8A, 0x05, 0xFC, 0x5E, 0x09, 0x5A, 0xF4, 0x84,
switches 0:5c4d7b2438d3 1080 0x8A, 0x08, 0xD3, 0x28, 0xD3, 0x68, 0x8E, 0x3D },
switches 0:5c4d7b2438d3 1081 { 0x7B, 0xD9, 0x66, 0xD5, 0x3A, 0xD8, 0xC1, 0xBB,
switches 0:5c4d7b2438d3 1082 0x85, 0xD2, 0xAD, 0xFA, 0xE8, 0x7B, 0xB1, 0x04 },
switches 0:5c4d7b2438d3 1083 { 0xFE, 0x3C, 0x53, 0x65, 0x3E, 0x2F, 0x45, 0xB5,
switches 0:5c4d7b2438d3 1084 0x6F, 0xCD, 0x88, 0xB2, 0xCC, 0x89, 0x8F, 0xF0 }
switches 0:5c4d7b2438d3 1085 };
switches 0:5c4d7b2438d3 1086 #endif /* MBEDTLS_CIPHER_MODE_CBC */
switches 0:5c4d7b2438d3 1087
switches 0:5c4d7b2438d3 1088 #if defined(MBEDTLS_CIPHER_MODE_CFB)
switches 0:5c4d7b2438d3 1089 /*
switches 0:5c4d7b2438d3 1090 * AES-CFB128 test vectors from:
switches 0:5c4d7b2438d3 1091 *
switches 0:5c4d7b2438d3 1092 * http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
switches 0:5c4d7b2438d3 1093 */
switches 0:5c4d7b2438d3 1094 static const unsigned char aes_test_cfb128_key[3][32] =
switches 0:5c4d7b2438d3 1095 {
switches 0:5c4d7b2438d3 1096 { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6,
switches 0:5c4d7b2438d3 1097 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C },
switches 0:5c4d7b2438d3 1098 { 0x8E, 0x73, 0xB0, 0xF7, 0xDA, 0x0E, 0x64, 0x52,
switches 0:5c4d7b2438d3 1099 0xC8, 0x10, 0xF3, 0x2B, 0x80, 0x90, 0x79, 0xE5,
switches 0:5c4d7b2438d3 1100 0x62, 0xF8, 0xEA, 0xD2, 0x52, 0x2C, 0x6B, 0x7B },
switches 0:5c4d7b2438d3 1101 { 0x60, 0x3D, 0xEB, 0x10, 0x15, 0xCA, 0x71, 0xBE,
switches 0:5c4d7b2438d3 1102 0x2B, 0x73, 0xAE, 0xF0, 0x85, 0x7D, 0x77, 0x81,
switches 0:5c4d7b2438d3 1103 0x1F, 0x35, 0x2C, 0x07, 0x3B, 0x61, 0x08, 0xD7,
switches 0:5c4d7b2438d3 1104 0x2D, 0x98, 0x10, 0xA3, 0x09, 0x14, 0xDF, 0xF4 }
switches 0:5c4d7b2438d3 1105 };
switches 0:5c4d7b2438d3 1106
switches 0:5c4d7b2438d3 1107 static const unsigned char aes_test_cfb128_iv[16] =
switches 0:5c4d7b2438d3 1108 {
switches 0:5c4d7b2438d3 1109 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
switches 0:5c4d7b2438d3 1110 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
switches 0:5c4d7b2438d3 1111 };
switches 0:5c4d7b2438d3 1112
switches 0:5c4d7b2438d3 1113 static const unsigned char aes_test_cfb128_pt[64] =
switches 0:5c4d7b2438d3 1114 {
switches 0:5c4d7b2438d3 1115 0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96,
switches 0:5c4d7b2438d3 1116 0xE9, 0x3D, 0x7E, 0x11, 0x73, 0x93, 0x17, 0x2A,
switches 0:5c4d7b2438d3 1117 0xAE, 0x2D, 0x8A, 0x57, 0x1E, 0x03, 0xAC, 0x9C,
switches 0:5c4d7b2438d3 1118 0x9E, 0xB7, 0x6F, 0xAC, 0x45, 0xAF, 0x8E, 0x51,
switches 0:5c4d7b2438d3 1119 0x30, 0xC8, 0x1C, 0x46, 0xA3, 0x5C, 0xE4, 0x11,
switches 0:5c4d7b2438d3 1120 0xE5, 0xFB, 0xC1, 0x19, 0x1A, 0x0A, 0x52, 0xEF,
switches 0:5c4d7b2438d3 1121 0xF6, 0x9F, 0x24, 0x45, 0xDF, 0x4F, 0x9B, 0x17,
switches 0:5c4d7b2438d3 1122 0xAD, 0x2B, 0x41, 0x7B, 0xE6, 0x6C, 0x37, 0x10
switches 0:5c4d7b2438d3 1123 };
switches 0:5c4d7b2438d3 1124
switches 0:5c4d7b2438d3 1125 static const unsigned char aes_test_cfb128_ct[3][64] =
switches 0:5c4d7b2438d3 1126 {
switches 0:5c4d7b2438d3 1127 { 0x3B, 0x3F, 0xD9, 0x2E, 0xB7, 0x2D, 0xAD, 0x20,
switches 0:5c4d7b2438d3 1128 0x33, 0x34, 0x49, 0xF8, 0xE8, 0x3C, 0xFB, 0x4A,
switches 0:5c4d7b2438d3 1129 0xC8, 0xA6, 0x45, 0x37, 0xA0, 0xB3, 0xA9, 0x3F,
switches 0:5c4d7b2438d3 1130 0xCD, 0xE3, 0xCD, 0xAD, 0x9F, 0x1C, 0xE5, 0x8B,
switches 0:5c4d7b2438d3 1131 0x26, 0x75, 0x1F, 0x67, 0xA3, 0xCB, 0xB1, 0x40,
switches 0:5c4d7b2438d3 1132 0xB1, 0x80, 0x8C, 0xF1, 0x87, 0xA4, 0xF4, 0xDF,
switches 0:5c4d7b2438d3 1133 0xC0, 0x4B, 0x05, 0x35, 0x7C, 0x5D, 0x1C, 0x0E,
switches 0:5c4d7b2438d3 1134 0xEA, 0xC4, 0xC6, 0x6F, 0x9F, 0xF7, 0xF2, 0xE6 },
switches 0:5c4d7b2438d3 1135 { 0xCD, 0xC8, 0x0D, 0x6F, 0xDD, 0xF1, 0x8C, 0xAB,
switches 0:5c4d7b2438d3 1136 0x34, 0xC2, 0x59, 0x09, 0xC9, 0x9A, 0x41, 0x74,
switches 0:5c4d7b2438d3 1137 0x67, 0xCE, 0x7F, 0x7F, 0x81, 0x17, 0x36, 0x21,
switches 0:5c4d7b2438d3 1138 0x96, 0x1A, 0x2B, 0x70, 0x17, 0x1D, 0x3D, 0x7A,
switches 0:5c4d7b2438d3 1139 0x2E, 0x1E, 0x8A, 0x1D, 0xD5, 0x9B, 0x88, 0xB1,
switches 0:5c4d7b2438d3 1140 0xC8, 0xE6, 0x0F, 0xED, 0x1E, 0xFA, 0xC4, 0xC9,
switches 0:5c4d7b2438d3 1141 0xC0, 0x5F, 0x9F, 0x9C, 0xA9, 0x83, 0x4F, 0xA0,
switches 0:5c4d7b2438d3 1142 0x42, 0xAE, 0x8F, 0xBA, 0x58, 0x4B, 0x09, 0xFF },
switches 0:5c4d7b2438d3 1143 { 0xDC, 0x7E, 0x84, 0xBF, 0xDA, 0x79, 0x16, 0x4B,
switches 0:5c4d7b2438d3 1144 0x7E, 0xCD, 0x84, 0x86, 0x98, 0x5D, 0x38, 0x60,
switches 0:5c4d7b2438d3 1145 0x39, 0xFF, 0xED, 0x14, 0x3B, 0x28, 0xB1, 0xC8,
switches 0:5c4d7b2438d3 1146 0x32, 0x11, 0x3C, 0x63, 0x31, 0xE5, 0x40, 0x7B,
switches 0:5c4d7b2438d3 1147 0xDF, 0x10, 0x13, 0x24, 0x15, 0xE5, 0x4B, 0x92,
switches 0:5c4d7b2438d3 1148 0xA1, 0x3E, 0xD0, 0xA8, 0x26, 0x7A, 0xE2, 0xF9,
switches 0:5c4d7b2438d3 1149 0x75, 0xA3, 0x85, 0x74, 0x1A, 0xB9, 0xCE, 0xF8,
switches 0:5c4d7b2438d3 1150 0x20, 0x31, 0x62, 0x3D, 0x55, 0xB1, 0xE4, 0x71 }
switches 0:5c4d7b2438d3 1151 };
switches 0:5c4d7b2438d3 1152 #endif /* MBEDTLS_CIPHER_MODE_CFB */
switches 0:5c4d7b2438d3 1153
switches 0:5c4d7b2438d3 1154 #if defined(MBEDTLS_CIPHER_MODE_CTR)
switches 0:5c4d7b2438d3 1155 /*
switches 0:5c4d7b2438d3 1156 * AES-CTR test vectors from:
switches 0:5c4d7b2438d3 1157 *
switches 0:5c4d7b2438d3 1158 * http://www.faqs.org/rfcs/rfc3686.html
switches 0:5c4d7b2438d3 1159 */
switches 0:5c4d7b2438d3 1160
switches 0:5c4d7b2438d3 1161 static const unsigned char aes_test_ctr_key[3][16] =
switches 0:5c4d7b2438d3 1162 {
switches 0:5c4d7b2438d3 1163 { 0xAE, 0x68, 0x52, 0xF8, 0x12, 0x10, 0x67, 0xCC,
switches 0:5c4d7b2438d3 1164 0x4B, 0xF7, 0xA5, 0x76, 0x55, 0x77, 0xF3, 0x9E },
switches 0:5c4d7b2438d3 1165 { 0x7E, 0x24, 0x06, 0x78, 0x17, 0xFA, 0xE0, 0xD7,
switches 0:5c4d7b2438d3 1166 0x43, 0xD6, 0xCE, 0x1F, 0x32, 0x53, 0x91, 0x63 },
switches 0:5c4d7b2438d3 1167 { 0x76, 0x91, 0xBE, 0x03, 0x5E, 0x50, 0x20, 0xA8,
switches 0:5c4d7b2438d3 1168 0xAC, 0x6E, 0x61, 0x85, 0x29, 0xF9, 0xA0, 0xDC }
switches 0:5c4d7b2438d3 1169 };
switches 0:5c4d7b2438d3 1170
switches 0:5c4d7b2438d3 1171 static const unsigned char aes_test_ctr_nonce_counter[3][16] =
switches 0:5c4d7b2438d3 1172 {
switches 0:5c4d7b2438d3 1173 { 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
switches 0:5c4d7b2438d3 1174 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
switches 0:5c4d7b2438d3 1175 { 0x00, 0x6C, 0xB6, 0xDB, 0xC0, 0x54, 0x3B, 0x59,
switches 0:5c4d7b2438d3 1176 0xDA, 0x48, 0xD9, 0x0B, 0x00, 0x00, 0x00, 0x01 },
switches 0:5c4d7b2438d3 1177 { 0x00, 0xE0, 0x01, 0x7B, 0x27, 0x77, 0x7F, 0x3F,
switches 0:5c4d7b2438d3 1178 0x4A, 0x17, 0x86, 0xF0, 0x00, 0x00, 0x00, 0x01 }
switches 0:5c4d7b2438d3 1179 };
switches 0:5c4d7b2438d3 1180
switches 0:5c4d7b2438d3 1181 static const unsigned char aes_test_ctr_pt[3][48] =
switches 0:5c4d7b2438d3 1182 {
switches 0:5c4d7b2438d3 1183 { 0x53, 0x69, 0x6E, 0x67, 0x6C, 0x65, 0x20, 0x62,
switches 0:5c4d7b2438d3 1184 0x6C, 0x6F, 0x63, 0x6B, 0x20, 0x6D, 0x73, 0x67 },
switches 0:5c4d7b2438d3 1185
switches 0:5c4d7b2438d3 1186 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
switches 0:5c4d7b2438d3 1187 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
switches 0:5c4d7b2438d3 1188 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
switches 0:5c4d7b2438d3 1189 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F },
switches 0:5c4d7b2438d3 1190
switches 0:5c4d7b2438d3 1191 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
switches 0:5c4d7b2438d3 1192 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
switches 0:5c4d7b2438d3 1193 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
switches 0:5c4d7b2438d3 1194 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
switches 0:5c4d7b2438d3 1195 0x20, 0x21, 0x22, 0x23 }
switches 0:5c4d7b2438d3 1196 };
switches 0:5c4d7b2438d3 1197
switches 0:5c4d7b2438d3 1198 static const unsigned char aes_test_ctr_ct[3][48] =
switches 0:5c4d7b2438d3 1199 {
switches 0:5c4d7b2438d3 1200 { 0xE4, 0x09, 0x5D, 0x4F, 0xB7, 0xA7, 0xB3, 0x79,
switches 0:5c4d7b2438d3 1201 0x2D, 0x61, 0x75, 0xA3, 0x26, 0x13, 0x11, 0xB8 },
switches 0:5c4d7b2438d3 1202 { 0x51, 0x04, 0xA1, 0x06, 0x16, 0x8A, 0x72, 0xD9,
switches 0:5c4d7b2438d3 1203 0x79, 0x0D, 0x41, 0xEE, 0x8E, 0xDA, 0xD3, 0x88,
switches 0:5c4d7b2438d3 1204 0xEB, 0x2E, 0x1E, 0xFC, 0x46, 0xDA, 0x57, 0xC8,
switches 0:5c4d7b2438d3 1205 0xFC, 0xE6, 0x30, 0xDF, 0x91, 0x41, 0xBE, 0x28 },
switches 0:5c4d7b2438d3 1206 { 0xC1, 0xCF, 0x48, 0xA8, 0x9F, 0x2F, 0xFD, 0xD9,
switches 0:5c4d7b2438d3 1207 0xCF, 0x46, 0x52, 0xE9, 0xEF, 0xDB, 0x72, 0xD7,
switches 0:5c4d7b2438d3 1208 0x45, 0x40, 0xA4, 0x2B, 0xDE, 0x6D, 0x78, 0x36,
switches 0:5c4d7b2438d3 1209 0xD5, 0x9A, 0x5C, 0xEA, 0xAE, 0xF3, 0x10, 0x53,
switches 0:5c4d7b2438d3 1210 0x25, 0xB2, 0x07, 0x2F }
switches 0:5c4d7b2438d3 1211 };
switches 0:5c4d7b2438d3 1212
switches 0:5c4d7b2438d3 1213 static const int aes_test_ctr_len[3] =
switches 0:5c4d7b2438d3 1214 { 16, 32, 36 };
switches 0:5c4d7b2438d3 1215 #endif /* MBEDTLS_CIPHER_MODE_CTR */
switches 0:5c4d7b2438d3 1216
switches 0:5c4d7b2438d3 1217 /*
switches 0:5c4d7b2438d3 1218 * Checkup routine
switches 0:5c4d7b2438d3 1219 */
switches 0:5c4d7b2438d3 1220 int mbedtls_aes_self_test( int verbose )
switches 0:5c4d7b2438d3 1221 {
switches 0:5c4d7b2438d3 1222 int ret = 0, i, j, u, v;
switches 0:5c4d7b2438d3 1223 unsigned char key[32];
switches 0:5c4d7b2438d3 1224 unsigned char buf[64];
switches 0:5c4d7b2438d3 1225 #if defined(MBEDTLS_CIPHER_MODE_CBC) || defined(MBEDTLS_CIPHER_MODE_CFB)
switches 0:5c4d7b2438d3 1226 unsigned char iv[16];
switches 0:5c4d7b2438d3 1227 #endif
switches 0:5c4d7b2438d3 1228 #if defined(MBEDTLS_CIPHER_MODE_CBC)
switches 0:5c4d7b2438d3 1229 unsigned char prv[16];
switches 0:5c4d7b2438d3 1230 #endif
switches 0:5c4d7b2438d3 1231 #if defined(MBEDTLS_CIPHER_MODE_CTR) || defined(MBEDTLS_CIPHER_MODE_CFB)
switches 0:5c4d7b2438d3 1232 size_t offset;
switches 0:5c4d7b2438d3 1233 #endif
switches 0:5c4d7b2438d3 1234 #if defined(MBEDTLS_CIPHER_MODE_CTR)
switches 0:5c4d7b2438d3 1235 int len;
switches 0:5c4d7b2438d3 1236 unsigned char nonce_counter[16];
switches 0:5c4d7b2438d3 1237 unsigned char stream_block[16];
switches 0:5c4d7b2438d3 1238 #endif
switches 0:5c4d7b2438d3 1239 mbedtls_aes_context ctx;
switches 0:5c4d7b2438d3 1240
switches 0:5c4d7b2438d3 1241 memset( key, 0, 32 );
switches 0:5c4d7b2438d3 1242 mbedtls_aes_init( &ctx );
switches 0:5c4d7b2438d3 1243
switches 0:5c4d7b2438d3 1244 /*
switches 0:5c4d7b2438d3 1245 * ECB mode
switches 0:5c4d7b2438d3 1246 */
switches 0:5c4d7b2438d3 1247 for( i = 0; i < 6; i++ )
switches 0:5c4d7b2438d3 1248 {
switches 0:5c4d7b2438d3 1249 u = i >> 1;
switches 0:5c4d7b2438d3 1250 v = i & 1;
switches 0:5c4d7b2438d3 1251
switches 0:5c4d7b2438d3 1252 if( verbose != 0 )
switches 0:5c4d7b2438d3 1253 mbedtls_printf( " AES-ECB-%3d (%s): ", 128 + u * 64,
switches 0:5c4d7b2438d3 1254 ( v == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
switches 0:5c4d7b2438d3 1255
switches 0:5c4d7b2438d3 1256 memset( buf, 0, 16 );
switches 0:5c4d7b2438d3 1257
switches 0:5c4d7b2438d3 1258 if( v == MBEDTLS_AES_DECRYPT )
switches 0:5c4d7b2438d3 1259 {
switches 0:5c4d7b2438d3 1260 mbedtls_aes_setkey_dec( &ctx, key, 128 + u * 64 );
switches 0:5c4d7b2438d3 1261
switches 0:5c4d7b2438d3 1262 for( j = 0; j < 10000; j++ )
switches 0:5c4d7b2438d3 1263 mbedtls_aes_crypt_ecb( &ctx, v, buf, buf );
switches 0:5c4d7b2438d3 1264
switches 0:5c4d7b2438d3 1265 if( memcmp( buf, aes_test_ecb_dec[u], 16 ) != 0 )
switches 0:5c4d7b2438d3 1266 {
switches 0:5c4d7b2438d3 1267 if( verbose != 0 )
switches 0:5c4d7b2438d3 1268 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1269
switches 0:5c4d7b2438d3 1270 ret = 1;
switches 0:5c4d7b2438d3 1271 goto exit;
switches 0:5c4d7b2438d3 1272 }
switches 0:5c4d7b2438d3 1273 }
switches 0:5c4d7b2438d3 1274 else
switches 0:5c4d7b2438d3 1275 {
switches 0:5c4d7b2438d3 1276 mbedtls_aes_setkey_enc( &ctx, key, 128 + u * 64 );
switches 0:5c4d7b2438d3 1277
switches 0:5c4d7b2438d3 1278 for( j = 0; j < 10000; j++ )
switches 0:5c4d7b2438d3 1279 mbedtls_aes_crypt_ecb( &ctx, v, buf, buf );
switches 0:5c4d7b2438d3 1280
switches 0:5c4d7b2438d3 1281 if( memcmp( buf, aes_test_ecb_enc[u], 16 ) != 0 )
switches 0:5c4d7b2438d3 1282 {
switches 0:5c4d7b2438d3 1283 if( verbose != 0 )
switches 0:5c4d7b2438d3 1284 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1285
switches 0:5c4d7b2438d3 1286 ret = 1;
switches 0:5c4d7b2438d3 1287 goto exit;
switches 0:5c4d7b2438d3 1288 }
switches 0:5c4d7b2438d3 1289 }
switches 0:5c4d7b2438d3 1290
switches 0:5c4d7b2438d3 1291 if( verbose != 0 )
switches 0:5c4d7b2438d3 1292 mbedtls_printf( "passed\n" );
switches 0:5c4d7b2438d3 1293 }
switches 0:5c4d7b2438d3 1294
switches 0:5c4d7b2438d3 1295 if( verbose != 0 )
switches 0:5c4d7b2438d3 1296 mbedtls_printf( "\n" );
switches 0:5c4d7b2438d3 1297
switches 0:5c4d7b2438d3 1298 #if defined(MBEDTLS_CIPHER_MODE_CBC)
switches 0:5c4d7b2438d3 1299 /*
switches 0:5c4d7b2438d3 1300 * CBC mode
switches 0:5c4d7b2438d3 1301 */
switches 0:5c4d7b2438d3 1302 for( i = 0; i < 6; i++ )
switches 0:5c4d7b2438d3 1303 {
switches 0:5c4d7b2438d3 1304 u = i >> 1;
switches 0:5c4d7b2438d3 1305 v = i & 1;
switches 0:5c4d7b2438d3 1306
switches 0:5c4d7b2438d3 1307 if( verbose != 0 )
switches 0:5c4d7b2438d3 1308 mbedtls_printf( " AES-CBC-%3d (%s): ", 128 + u * 64,
switches 0:5c4d7b2438d3 1309 ( v == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
switches 0:5c4d7b2438d3 1310
switches 0:5c4d7b2438d3 1311 memset( iv , 0, 16 );
switches 0:5c4d7b2438d3 1312 memset( prv, 0, 16 );
switches 0:5c4d7b2438d3 1313 memset( buf, 0, 16 );
switches 0:5c4d7b2438d3 1314
switches 0:5c4d7b2438d3 1315 if( v == MBEDTLS_AES_DECRYPT )
switches 0:5c4d7b2438d3 1316 {
switches 0:5c4d7b2438d3 1317 mbedtls_aes_setkey_dec( &ctx, key, 128 + u * 64 );
switches 0:5c4d7b2438d3 1318
switches 0:5c4d7b2438d3 1319 for( j = 0; j < 10000; j++ )
switches 0:5c4d7b2438d3 1320 mbedtls_aes_crypt_cbc( &ctx, v, 16, iv, buf, buf );
switches 0:5c4d7b2438d3 1321
switches 0:5c4d7b2438d3 1322 if( memcmp( buf, aes_test_cbc_dec[u], 16 ) != 0 )
switches 0:5c4d7b2438d3 1323 {
switches 0:5c4d7b2438d3 1324 if( verbose != 0 )
switches 0:5c4d7b2438d3 1325 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1326
switches 0:5c4d7b2438d3 1327 ret = 1;
switches 0:5c4d7b2438d3 1328 goto exit;
switches 0:5c4d7b2438d3 1329 }
switches 0:5c4d7b2438d3 1330 }
switches 0:5c4d7b2438d3 1331 else
switches 0:5c4d7b2438d3 1332 {
switches 0:5c4d7b2438d3 1333 mbedtls_aes_setkey_enc( &ctx, key, 128 + u * 64 );
switches 0:5c4d7b2438d3 1334
switches 0:5c4d7b2438d3 1335 for( j = 0; j < 10000; j++ )
switches 0:5c4d7b2438d3 1336 {
switches 0:5c4d7b2438d3 1337 unsigned char tmp[16];
switches 0:5c4d7b2438d3 1338
switches 0:5c4d7b2438d3 1339 mbedtls_aes_crypt_cbc( &ctx, v, 16, iv, buf, buf );
switches 0:5c4d7b2438d3 1340
switches 0:5c4d7b2438d3 1341 memcpy( tmp, prv, 16 );
switches 0:5c4d7b2438d3 1342 memcpy( prv, buf, 16 );
switches 0:5c4d7b2438d3 1343 memcpy( buf, tmp, 16 );
switches 0:5c4d7b2438d3 1344 }
switches 0:5c4d7b2438d3 1345
switches 0:5c4d7b2438d3 1346 if( memcmp( prv, aes_test_cbc_enc[u], 16 ) != 0 )
switches 0:5c4d7b2438d3 1347 {
switches 0:5c4d7b2438d3 1348 if( verbose != 0 )
switches 0:5c4d7b2438d3 1349 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1350
switches 0:5c4d7b2438d3 1351 ret = 1;
switches 0:5c4d7b2438d3 1352 goto exit;
switches 0:5c4d7b2438d3 1353 }
switches 0:5c4d7b2438d3 1354 }
switches 0:5c4d7b2438d3 1355
switches 0:5c4d7b2438d3 1356 if( verbose != 0 )
switches 0:5c4d7b2438d3 1357 mbedtls_printf( "passed\n" );
switches 0:5c4d7b2438d3 1358 }
switches 0:5c4d7b2438d3 1359
switches 0:5c4d7b2438d3 1360 if( verbose != 0 )
switches 0:5c4d7b2438d3 1361 mbedtls_printf( "\n" );
switches 0:5c4d7b2438d3 1362 #endif /* MBEDTLS_CIPHER_MODE_CBC */
switches 0:5c4d7b2438d3 1363
switches 0:5c4d7b2438d3 1364 #if defined(MBEDTLS_CIPHER_MODE_CFB)
switches 0:5c4d7b2438d3 1365 /*
switches 0:5c4d7b2438d3 1366 * CFB128 mode
switches 0:5c4d7b2438d3 1367 */
switches 0:5c4d7b2438d3 1368 for( i = 0; i < 6; i++ )
switches 0:5c4d7b2438d3 1369 {
switches 0:5c4d7b2438d3 1370 u = i >> 1;
switches 0:5c4d7b2438d3 1371 v = i & 1;
switches 0:5c4d7b2438d3 1372
switches 0:5c4d7b2438d3 1373 if( verbose != 0 )
switches 0:5c4d7b2438d3 1374 mbedtls_printf( " AES-CFB128-%3d (%s): ", 128 + u * 64,
switches 0:5c4d7b2438d3 1375 ( v == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
switches 0:5c4d7b2438d3 1376
switches 0:5c4d7b2438d3 1377 memcpy( iv, aes_test_cfb128_iv, 16 );
switches 0:5c4d7b2438d3 1378 memcpy( key, aes_test_cfb128_key[u], 16 + u * 8 );
switches 0:5c4d7b2438d3 1379
switches 0:5c4d7b2438d3 1380 offset = 0;
switches 0:5c4d7b2438d3 1381 mbedtls_aes_setkey_enc( &ctx, key, 128 + u * 64 );
switches 0:5c4d7b2438d3 1382
switches 0:5c4d7b2438d3 1383 if( v == MBEDTLS_AES_DECRYPT )
switches 0:5c4d7b2438d3 1384 {
switches 0:5c4d7b2438d3 1385 memcpy( buf, aes_test_cfb128_ct[u], 64 );
switches 0:5c4d7b2438d3 1386 mbedtls_aes_crypt_cfb128( &ctx, v, 64, &offset, iv, buf, buf );
switches 0:5c4d7b2438d3 1387
switches 0:5c4d7b2438d3 1388 if( memcmp( buf, aes_test_cfb128_pt, 64 ) != 0 )
switches 0:5c4d7b2438d3 1389 {
switches 0:5c4d7b2438d3 1390 if( verbose != 0 )
switches 0:5c4d7b2438d3 1391 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1392
switches 0:5c4d7b2438d3 1393 ret = 1;
switches 0:5c4d7b2438d3 1394 goto exit;
switches 0:5c4d7b2438d3 1395 }
switches 0:5c4d7b2438d3 1396 }
switches 0:5c4d7b2438d3 1397 else
switches 0:5c4d7b2438d3 1398 {
switches 0:5c4d7b2438d3 1399 memcpy( buf, aes_test_cfb128_pt, 64 );
switches 0:5c4d7b2438d3 1400 mbedtls_aes_crypt_cfb128( &ctx, v, 64, &offset, iv, buf, buf );
switches 0:5c4d7b2438d3 1401
switches 0:5c4d7b2438d3 1402 if( memcmp( buf, aes_test_cfb128_ct[u], 64 ) != 0 )
switches 0:5c4d7b2438d3 1403 {
switches 0:5c4d7b2438d3 1404 if( verbose != 0 )
switches 0:5c4d7b2438d3 1405 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1406
switches 0:5c4d7b2438d3 1407 ret = 1;
switches 0:5c4d7b2438d3 1408 goto exit;
switches 0:5c4d7b2438d3 1409 }
switches 0:5c4d7b2438d3 1410 }
switches 0:5c4d7b2438d3 1411
switches 0:5c4d7b2438d3 1412 if( verbose != 0 )
switches 0:5c4d7b2438d3 1413 mbedtls_printf( "passed\n" );
switches 0:5c4d7b2438d3 1414 }
switches 0:5c4d7b2438d3 1415
switches 0:5c4d7b2438d3 1416 if( verbose != 0 )
switches 0:5c4d7b2438d3 1417 mbedtls_printf( "\n" );
switches 0:5c4d7b2438d3 1418 #endif /* MBEDTLS_CIPHER_MODE_CFB */
switches 0:5c4d7b2438d3 1419
switches 0:5c4d7b2438d3 1420 #if defined(MBEDTLS_CIPHER_MODE_CTR)
switches 0:5c4d7b2438d3 1421 /*
switches 0:5c4d7b2438d3 1422 * CTR mode
switches 0:5c4d7b2438d3 1423 */
switches 0:5c4d7b2438d3 1424 for( i = 0; i < 6; i++ )
switches 0:5c4d7b2438d3 1425 {
switches 0:5c4d7b2438d3 1426 u = i >> 1;
switches 0:5c4d7b2438d3 1427 v = i & 1;
switches 0:5c4d7b2438d3 1428
switches 0:5c4d7b2438d3 1429 if( verbose != 0 )
switches 0:5c4d7b2438d3 1430 mbedtls_printf( " AES-CTR-128 (%s): ",
switches 0:5c4d7b2438d3 1431 ( v == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
switches 0:5c4d7b2438d3 1432
switches 0:5c4d7b2438d3 1433 memcpy( nonce_counter, aes_test_ctr_nonce_counter[u], 16 );
switches 0:5c4d7b2438d3 1434 memcpy( key, aes_test_ctr_key[u], 16 );
switches 0:5c4d7b2438d3 1435
switches 0:5c4d7b2438d3 1436 offset = 0;
switches 0:5c4d7b2438d3 1437 mbedtls_aes_setkey_enc( &ctx, key, 128 );
switches 0:5c4d7b2438d3 1438
switches 0:5c4d7b2438d3 1439 if( v == MBEDTLS_AES_DECRYPT )
switches 0:5c4d7b2438d3 1440 {
switches 0:5c4d7b2438d3 1441 len = aes_test_ctr_len[u];
switches 0:5c4d7b2438d3 1442 memcpy( buf, aes_test_ctr_ct[u], len );
switches 0:5c4d7b2438d3 1443
switches 0:5c4d7b2438d3 1444 mbedtls_aes_crypt_ctr( &ctx, len, &offset, nonce_counter, stream_block,
switches 0:5c4d7b2438d3 1445 buf, buf );
switches 0:5c4d7b2438d3 1446
switches 0:5c4d7b2438d3 1447 if( memcmp( buf, aes_test_ctr_pt[u], len ) != 0 )
switches 0:5c4d7b2438d3 1448 {
switches 0:5c4d7b2438d3 1449 if( verbose != 0 )
switches 0:5c4d7b2438d3 1450 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1451
switches 0:5c4d7b2438d3 1452 ret = 1;
switches 0:5c4d7b2438d3 1453 goto exit;
switches 0:5c4d7b2438d3 1454 }
switches 0:5c4d7b2438d3 1455 }
switches 0:5c4d7b2438d3 1456 else
switches 0:5c4d7b2438d3 1457 {
switches 0:5c4d7b2438d3 1458 len = aes_test_ctr_len[u];
switches 0:5c4d7b2438d3 1459 memcpy( buf, aes_test_ctr_pt[u], len );
switches 0:5c4d7b2438d3 1460
switches 0:5c4d7b2438d3 1461 mbedtls_aes_crypt_ctr( &ctx, len, &offset, nonce_counter, stream_block,
switches 0:5c4d7b2438d3 1462 buf, buf );
switches 0:5c4d7b2438d3 1463
switches 0:5c4d7b2438d3 1464 if( memcmp( buf, aes_test_ctr_ct[u], len ) != 0 )
switches 0:5c4d7b2438d3 1465 {
switches 0:5c4d7b2438d3 1466 if( verbose != 0 )
switches 0:5c4d7b2438d3 1467 mbedtls_printf( "failed\n" );
switches 0:5c4d7b2438d3 1468
switches 0:5c4d7b2438d3 1469 ret = 1;
switches 0:5c4d7b2438d3 1470 goto exit;
switches 0:5c4d7b2438d3 1471 }
switches 0:5c4d7b2438d3 1472 }
switches 0:5c4d7b2438d3 1473
switches 0:5c4d7b2438d3 1474 if( verbose != 0 )
switches 0:5c4d7b2438d3 1475 mbedtls_printf( "passed\n" );
switches 0:5c4d7b2438d3 1476 }
switches 0:5c4d7b2438d3 1477
switches 0:5c4d7b2438d3 1478 if( verbose != 0 )
switches 0:5c4d7b2438d3 1479 mbedtls_printf( "\n" );
switches 0:5c4d7b2438d3 1480 #endif /* MBEDTLS_CIPHER_MODE_CTR */
switches 0:5c4d7b2438d3 1481
switches 0:5c4d7b2438d3 1482 ret = 0;
switches 0:5c4d7b2438d3 1483
switches 0:5c4d7b2438d3 1484 exit:
switches 0:5c4d7b2438d3 1485 mbedtls_aes_free( &ctx );
switches 0:5c4d7b2438d3 1486
switches 0:5c4d7b2438d3 1487 return( ret );
switches 0:5c4d7b2438d3 1488 }
switches 0:5c4d7b2438d3 1489
switches 0:5c4d7b2438d3 1490 #endif /* MBEDTLS_SELF_TEST */
switches 0:5c4d7b2438d3 1491
switches 0:5c4d7b2438d3 1492 #endif /* MBEDTLS_AES_C */