2278 lines
76 KiB
C
2278 lines
76 KiB
C
/*
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* FIPS-197 compliant AES implementation
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*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* The AES block cipher was designed by Vincent Rijmen and Joan Daemen.
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*
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* http://csrc.nist.gov/encryption/aes/rijndael/Rijndael.pdf
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* http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
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*/
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#include "common.h"
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#if defined(MBEDTLS_AES_C)
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#include <string.h>
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#include "mbedtls/aes.h"
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#include "mbedtls/platform.h"
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#include "mbedtls/platform_util.h"
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#include "mbedtls/error.h"
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#if defined(MBEDTLS_PADLOCK_C)
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#include "mbedtls/padlock.h"
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#endif
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#if defined(MBEDTLS_AESNI_C)
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#include "mbedtls/aesni.h"
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#endif
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#include "mbedtls/platform.h"
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#if !defined(MBEDTLS_AES_ALT)
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/* Parameter validation macros based on platform_util.h */
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#define AES_VALIDATE_RET(cond) \
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MBEDTLS_INTERNAL_VALIDATE_RET(cond, MBEDTLS_ERR_AES_BAD_INPUT_DATA)
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#define AES_VALIDATE(cond) \
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MBEDTLS_INTERNAL_VALIDATE(cond)
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#if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
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static int aes_padlock_ace = -1;
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#endif
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#if defined(MBEDTLS_AES_ROM_TABLES)
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/*
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* Forward S-box
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*/
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#if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
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!defined(MBEDTLS_AES_SETKEY_DEC_ALT)
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static const unsigned char FSb[256] =
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{
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0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5,
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0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
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0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0,
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0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
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0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC,
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0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
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0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A,
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0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75,
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0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0,
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0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84,
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0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B,
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0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
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0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85,
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0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8,
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0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5,
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0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2,
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0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17,
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0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
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0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88,
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0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB,
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0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C,
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0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79,
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0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9,
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0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
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0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6,
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0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A,
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0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E,
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0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E,
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0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94,
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0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
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0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68,
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0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
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};
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#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
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!defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
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/*
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* Forward tables
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*/
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#define FT \
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\
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V(A5, 63, 63, C6), V(84, 7C, 7C, F8), V(99, 77, 77, EE), V(8D, 7B, 7B, F6), \
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V(0D, F2, F2, FF), V(BD, 6B, 6B, D6), V(B1, 6F, 6F, DE), V(54, C5, C5, 91), \
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V(50, 30, 30, 60), V(03, 01, 01, 02), V(A9, 67, 67, CE), V(7D, 2B, 2B, 56), \
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V(19, FE, FE, E7), V(62, D7, D7, B5), V(E6, AB, AB, 4D), V(9A, 76, 76, EC), \
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V(45, CA, CA, 8F), V(9D, 82, 82, 1F), V(40, C9, C9, 89), V(87, 7D, 7D, FA), \
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V(15, FA, FA, EF), V(EB, 59, 59, B2), V(C9, 47, 47, 8E), V(0B, F0, F0, FB), \
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V(EC, AD, AD, 41), V(67, D4, D4, B3), V(FD, A2, A2, 5F), V(EA, AF, AF, 45), \
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V(BF, 9C, 9C, 23), V(F7, A4, A4, 53), V(96, 72, 72, E4), V(5B, C0, C0, 9B), \
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V(C2, B7, B7, 75), V(1C, FD, FD, E1), V(AE, 93, 93, 3D), V(6A, 26, 26, 4C), \
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V(5A, 36, 36, 6C), V(41, 3F, 3F, 7E), V(02, F7, F7, F5), V(4F, CC, CC, 83), \
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V(5C, 34, 34, 68), V(F4, A5, A5, 51), V(34, E5, E5, D1), V(08, F1, F1, F9), \
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V(93, 71, 71, E2), V(73, D8, D8, AB), V(53, 31, 31, 62), V(3F, 15, 15, 2A), \
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V(0C, 04, 04, 08), V(52, C7, C7, 95), V(65, 23, 23, 46), V(5E, C3, C3, 9D), \
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V(28, 18, 18, 30), V(A1, 96, 96, 37), V(0F, 05, 05, 0A), V(B5, 9A, 9A, 2F), \
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V(09, 07, 07, 0E), V(36, 12, 12, 24), V(9B, 80, 80, 1B), V(3D, E2, E2, DF), \
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V(26, EB, EB, CD), V(69, 27, 27, 4E), V(CD, B2, B2, 7F), V(9F, 75, 75, EA), \
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V(1B, 09, 09, 12), V(9E, 83, 83, 1D), V(74, 2C, 2C, 58), V(2E, 1A, 1A, 34), \
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V(2D, 1B, 1B, 36), V(B2, 6E, 6E, DC), V(EE, 5A, 5A, B4), V(FB, A0, A0, 5B), \
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V(F6, 52, 52, A4), V(4D, 3B, 3B, 76), V(61, D6, D6, B7), V(CE, B3, B3, 7D), \
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V(7B, 29, 29, 52), V(3E, E3, E3, DD), V(71, 2F, 2F, 5E), V(97, 84, 84, 13), \
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V(F5, 53, 53, A6), V(68, D1, D1, B9), V(00, 00, 00, 00), V(2C, ED, ED, C1), \
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V(60, 20, 20, 40), V(1F, FC, FC, E3), V(C8, B1, B1, 79), V(ED, 5B, 5B, B6), \
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V(BE, 6A, 6A, D4), V(46, CB, CB, 8D), V(D9, BE, BE, 67), V(4B, 39, 39, 72), \
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V(DE, 4A, 4A, 94), V(D4, 4C, 4C, 98), V(E8, 58, 58, B0), V(4A, CF, CF, 85), \
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V(6B, D0, D0, BB), V(2A, EF, EF, C5), V(E5, AA, AA, 4F), V(16, FB, FB, ED), \
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V(C5, 43, 43, 86), V(D7, 4D, 4D, 9A), V(55, 33, 33, 66), V(94, 85, 85, 11), \
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V(CF, 45, 45, 8A), V(10, F9, F9, E9), V(06, 02, 02, 04), V(81, 7F, 7F, FE), \
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V(F0, 50, 50, A0), V(44, 3C, 3C, 78), V(BA, 9F, 9F, 25), V(E3, A8, A8, 4B), \
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V(F3, 51, 51, A2), V(FE, A3, A3, 5D), V(C0, 40, 40, 80), V(8A, 8F, 8F, 05), \
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V(AD, 92, 92, 3F), V(BC, 9D, 9D, 21), V(48, 38, 38, 70), V(04, F5, F5, F1), \
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V(DF, BC, BC, 63), V(C1, B6, B6, 77), V(75, DA, DA, AF), V(63, 21, 21, 42), \
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V(30, 10, 10, 20), V(1A, FF, FF, E5), V(0E, F3, F3, FD), V(6D, D2, D2, BF), \
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V(4C, CD, CD, 81), V(14, 0C, 0C, 18), V(35, 13, 13, 26), V(2F, EC, EC, C3), \
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V(E1, 5F, 5F, BE), V(A2, 97, 97, 35), V(CC, 44, 44, 88), V(39, 17, 17, 2E), \
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V(57, C4, C4, 93), V(F2, A7, A7, 55), V(82, 7E, 7E, FC), V(47, 3D, 3D, 7A), \
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V(AC, 64, 64, C8), V(E7, 5D, 5D, BA), V(2B, 19, 19, 32), V(95, 73, 73, E6), \
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V(A0, 60, 60, C0), V(98, 81, 81, 19), V(D1, 4F, 4F, 9E), V(7F, DC, DC, A3), \
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V(66, 22, 22, 44), V(7E, 2A, 2A, 54), V(AB, 90, 90, 3B), V(83, 88, 88, 0B), \
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V(CA, 46, 46, 8C), V(29, EE, EE, C7), V(D3, B8, B8, 6B), V(3C, 14, 14, 28), \
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V(79, DE, DE, A7), V(E2, 5E, 5E, BC), V(1D, 0B, 0B, 16), V(76, DB, DB, AD), \
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V(3B, E0, E0, DB), V(56, 32, 32, 64), V(4E, 3A, 3A, 74), V(1E, 0A, 0A, 14), \
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V(DB, 49, 49, 92), V(0A, 06, 06, 0C), V(6C, 24, 24, 48), V(E4, 5C, 5C, B8), \
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V(5D, C2, C2, 9F), V(6E, D3, D3, BD), V(EF, AC, AC, 43), V(A6, 62, 62, C4), \
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V(A8, 91, 91, 39), V(A4, 95, 95, 31), V(37, E4, E4, D3), V(8B, 79, 79, F2), \
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V(32, E7, E7, D5), V(43, C8, C8, 8B), V(59, 37, 37, 6E), V(B7, 6D, 6D, DA), \
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V(8C, 8D, 8D, 01), V(64, D5, D5, B1), V(D2, 4E, 4E, 9C), V(E0, A9, A9, 49), \
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V(B4, 6C, 6C, D8), V(FA, 56, 56, AC), V(07, F4, F4, F3), V(25, EA, EA, CF), \
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V(AF, 65, 65, CA), V(8E, 7A, 7A, F4), V(E9, AE, AE, 47), V(18, 08, 08, 10), \
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V(D5, BA, BA, 6F), V(88, 78, 78, F0), V(6F, 25, 25, 4A), V(72, 2E, 2E, 5C), \
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V(24, 1C, 1C, 38), V(F1, A6, A6, 57), V(C7, B4, B4, 73), V(51, C6, C6, 97), \
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V(23, E8, E8, CB), V(7C, DD, DD, A1), V(9C, 74, 74, E8), V(21, 1F, 1F, 3E), \
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V(DD, 4B, 4B, 96), V(DC, BD, BD, 61), V(86, 8B, 8B, 0D), V(85, 8A, 8A, 0F), \
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V(90, 70, 70, E0), V(42, 3E, 3E, 7C), V(C4, B5, B5, 71), V(AA, 66, 66, CC), \
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V(D8, 48, 48, 90), V(05, 03, 03, 06), V(01, F6, F6, F7), V(12, 0E, 0E, 1C), \
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V(A3, 61, 61, C2), V(5F, 35, 35, 6A), V(F9, 57, 57, AE), V(D0, B9, B9, 69), \
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V(91, 86, 86, 17), V(58, C1, C1, 99), V(27, 1D, 1D, 3A), V(B9, 9E, 9E, 27), \
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V(38, E1, E1, D9), V(13, F8, F8, EB), V(B3, 98, 98, 2B), V(33, 11, 11, 22), \
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V(BB, 69, 69, D2), V(70, D9, D9, A9), V(89, 8E, 8E, 07), V(A7, 94, 94, 33), \
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V(B6, 9B, 9B, 2D), V(22, 1E, 1E, 3C), V(92, 87, 87, 15), V(20, E9, E9, C9), \
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V(49, CE, CE, 87), V(FF, 55, 55, AA), V(78, 28, 28, 50), V(7A, DF, DF, A5), \
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V(8F, 8C, 8C, 03), V(F8, A1, A1, 59), V(80, 89, 89, 09), V(17, 0D, 0D, 1A), \
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V(DA, BF, BF, 65), V(31, E6, E6, D7), V(C6, 42, 42, 84), V(B8, 68, 68, D0), \
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V(C3, 41, 41, 82), V(B0, 99, 99, 29), V(77, 2D, 2D, 5A), V(11, 0F, 0F, 1E), \
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V(CB, B0, B0, 7B), V(FC, 54, 54, A8), V(D6, BB, BB, 6D), V(3A, 16, 16, 2C)
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#if !defined(MBEDTLS_AES_ENCRYPT_ALT)
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#define V(a, b, c, d) 0x##a##b##c##d
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static const uint32_t FT0[256] = { FT };
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#undef V
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#if !defined(MBEDTLS_AES_FEWER_TABLES)
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#define V(a, b, c, d) 0x##b##c##d##a
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static const uint32_t FT1[256] = { FT };
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#undef V
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#define V(a, b, c, d) 0x##c##d##a##b
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static const uint32_t FT2[256] = { FT };
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#undef V
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#define V(a, b, c, d) 0x##d##a##b##c
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static const uint32_t FT3[256] = { FT };
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#undef V
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#endif /* !MBEDTLS_AES_FEWER_TABLES */
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#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) */
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#undef FT
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#if !defined(MBEDTLS_AES_DECRYPT_ALT)
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/*
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* Reverse S-box
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*/
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static const unsigned char RSb[256] =
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{
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0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38,
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0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
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0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87,
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0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
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0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D,
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0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
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0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2,
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0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
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0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16,
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0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
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0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA,
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0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
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0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A,
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0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
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0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02,
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0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
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0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA,
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0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
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0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85,
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0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
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0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89,
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0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
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0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20,
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0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
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0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31,
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0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
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0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D,
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0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
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0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0,
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0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
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0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26,
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0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
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};
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#endif /* defined(MBEDTLS_AES_DECRYPT_ALT)) */
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/*
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* Reverse tables
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*/
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#define RT \
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\
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V(50, A7, F4, 51), V(53, 65, 41, 7E), V(C3, A4, 17, 1A), V(96, 5E, 27, 3A), \
|
|
V(CB, 6B, AB, 3B), V(F1, 45, 9D, 1F), V(AB, 58, FA, AC), V(93, 03, E3, 4B), \
|
|
V(55, FA, 30, 20), V(F6, 6D, 76, AD), V(91, 76, CC, 88), V(25, 4C, 02, F5), \
|
|
V(FC, D7, E5, 4F), V(D7, CB, 2A, C5), V(80, 44, 35, 26), V(8F, A3, 62, B5), \
|
|
V(49, 5A, B1, DE), V(67, 1B, BA, 25), V(98, 0E, EA, 45), V(E1, C0, FE, 5D), \
|
|
V(02, 75, 2F, C3), V(12, F0, 4C, 81), V(A3, 97, 46, 8D), V(C6, F9, D3, 6B), \
|
|
V(E7, 5F, 8F, 03), V(95, 9C, 92, 15), V(EB, 7A, 6D, BF), V(DA, 59, 52, 95), \
|
|
V(2D, 83, BE, D4), V(D3, 21, 74, 58), V(29, 69, E0, 49), V(44, C8, C9, 8E), \
|
|
V(6A, 89, C2, 75), V(78, 79, 8E, F4), V(6B, 3E, 58, 99), V(DD, 71, B9, 27), \
|
|
V(B6, 4F, E1, BE), V(17, AD, 88, F0), V(66, AC, 20, C9), V(B4, 3A, CE, 7D), \
|
|
V(18, 4A, DF, 63), V(82, 31, 1A, E5), V(60, 33, 51, 97), V(45, 7F, 53, 62), \
|
|
V(E0, 77, 64, B1), V(84, AE, 6B, BB), V(1C, A0, 81, FE), V(94, 2B, 08, F9), \
|
|
V(58, 68, 48, 70), V(19, FD, 45, 8F), V(87, 6C, DE, 94), V(B7, F8, 7B, 52), \
|
|
V(23, D3, 73, AB), V(E2, 02, 4B, 72), V(57, 8F, 1F, E3), V(2A, AB, 55, 66), \
|
|
V(07, 28, EB, B2), V(03, C2, B5, 2F), V(9A, 7B, C5, 86), V(A5, 08, 37, D3), \
|
|
V(F2, 87, 28, 30), V(B2, A5, BF, 23), V(BA, 6A, 03, 02), V(5C, 82, 16, ED), \
|
|
V(2B, 1C, CF, 8A), V(92, B4, 79, A7), V(F0, F2, 07, F3), V(A1, E2, 69, 4E), \
|
|
V(CD, F4, DA, 65), V(D5, BE, 05, 06), V(1F, 62, 34, D1), V(8A, FE, A6, C4), \
|
|
V(9D, 53, 2E, 34), V(A0, 55, F3, A2), V(32, E1, 8A, 05), V(75, EB, F6, A4), \
|
|
V(39, EC, 83, 0B), V(AA, EF, 60, 40), V(06, 9F, 71, 5E), V(51, 10, 6E, BD), \
|
|
V(F9, 8A, 21, 3E), V(3D, 06, DD, 96), V(AE, 05, 3E, DD), V(46, BD, E6, 4D), \
|
|
V(B5, 8D, 54, 91), V(05, 5D, C4, 71), V(6F, D4, 06, 04), V(FF, 15, 50, 60), \
|
|
V(24, FB, 98, 19), V(97, E9, BD, D6), V(CC, 43, 40, 89), V(77, 9E, D9, 67), \
|
|
V(BD, 42, E8, B0), V(88, 8B, 89, 07), V(38, 5B, 19, E7), V(DB, EE, C8, 79), \
|
|
V(47, 0A, 7C, A1), V(E9, 0F, 42, 7C), V(C9, 1E, 84, F8), V(00, 00, 00, 00), \
|
|
V(83, 86, 80, 09), V(48, ED, 2B, 32), V(AC, 70, 11, 1E), V(4E, 72, 5A, 6C), \
|
|
V(FB, FF, 0E, FD), V(56, 38, 85, 0F), V(1E, D5, AE, 3D), V(27, 39, 2D, 36), \
|
|
V(64, D9, 0F, 0A), V(21, A6, 5C, 68), V(D1, 54, 5B, 9B), V(3A, 2E, 36, 24), \
|
|
V(B1, 67, 0A, 0C), V(0F, E7, 57, 93), V(D2, 96, EE, B4), V(9E, 91, 9B, 1B), \
|
|
V(4F, C5, C0, 80), V(A2, 20, DC, 61), V(69, 4B, 77, 5A), V(16, 1A, 12, 1C), \
|
|
V(0A, BA, 93, E2), V(E5, 2A, A0, C0), V(43, E0, 22, 3C), V(1D, 17, 1B, 12), \
|
|
V(0B, 0D, 09, 0E), V(AD, C7, 8B, F2), V(B9, A8, B6, 2D), V(C8, A9, 1E, 14), \
|
|
V(85, 19, F1, 57), V(4C, 07, 75, AF), V(BB, DD, 99, EE), V(FD, 60, 7F, A3), \
|
|
V(9F, 26, 01, F7), V(BC, F5, 72, 5C), V(C5, 3B, 66, 44), V(34, 7E, FB, 5B), \
|
|
V(76, 29, 43, 8B), V(DC, C6, 23, CB), V(68, FC, ED, B6), V(63, F1, E4, B8), \
|
|
V(CA, DC, 31, D7), V(10, 85, 63, 42), V(40, 22, 97, 13), V(20, 11, C6, 84), \
|
|
V(7D, 24, 4A, 85), V(F8, 3D, BB, D2), V(11, 32, F9, AE), V(6D, A1, 29, C7), \
|
|
V(4B, 2F, 9E, 1D), V(F3, 30, B2, DC), V(EC, 52, 86, 0D), V(D0, E3, C1, 77), \
|
|
V(6C, 16, B3, 2B), V(99, B9, 70, A9), V(FA, 48, 94, 11), V(22, 64, E9, 47), \
|
|
V(C4, 8C, FC, A8), V(1A, 3F, F0, A0), V(D8, 2C, 7D, 56), V(EF, 90, 33, 22), \
|
|
V(C7, 4E, 49, 87), V(C1, D1, 38, D9), V(FE, A2, CA, 8C), V(36, 0B, D4, 98), \
|
|
V(CF, 81, F5, A6), V(28, DE, 7A, A5), V(26, 8E, B7, DA), V(A4, BF, AD, 3F), \
|
|
V(E4, 9D, 3A, 2C), V(0D, 92, 78, 50), V(9B, CC, 5F, 6A), V(62, 46, 7E, 54), \
|
|
V(C2, 13, 8D, F6), V(E8, B8, D8, 90), V(5E, F7, 39, 2E), V(F5, AF, C3, 82), \
|
|
V(BE, 80, 5D, 9F), V(7C, 93, D0, 69), V(A9, 2D, D5, 6F), V(B3, 12, 25, CF), \
|
|
V(3B, 99, AC, C8), V(A7, 7D, 18, 10), V(6E, 63, 9C, E8), V(7B, BB, 3B, DB), \
|
|
V(09, 78, 26, CD), V(F4, 18, 59, 6E), V(01, B7, 9A, EC), V(A8, 9A, 4F, 83), \
|
|
V(65, 6E, 95, E6), V(7E, E6, FF, AA), V(08, CF, BC, 21), V(E6, E8, 15, EF), \
|
|
V(D9, 9B, E7, BA), V(CE, 36, 6F, 4A), V(D4, 09, 9F, EA), V(D6, 7C, B0, 29), \
|
|
V(AF, B2, A4, 31), V(31, 23, 3F, 2A), V(30, 94, A5, C6), V(C0, 66, A2, 35), \
|
|
V(37, BC, 4E, 74), V(A6, CA, 82, FC), V(B0, D0, 90, E0), V(15, D8, A7, 33), \
|
|
V(4A, 98, 04, F1), V(F7, DA, EC, 41), V(0E, 50, CD, 7F), V(2F, F6, 91, 17), \
|
|
V(8D, D6, 4D, 76), V(4D, B0, EF, 43), V(54, 4D, AA, CC), V(DF, 04, 96, E4), \
|
|
V(E3, B5, D1, 9E), V(1B, 88, 6A, 4C), V(B8, 1F, 2C, C1), V(7F, 51, 65, 46), \
|
|
V(04, EA, 5E, 9D), V(5D, 35, 8C, 01), V(73, 74, 87, FA), V(2E, 41, 0B, FB), \
|
|
V(5A, 1D, 67, B3), V(52, D2, DB, 92), V(33, 56, 10, E9), V(13, 47, D6, 6D), \
|
|
V(8C, 61, D7, 9A), V(7A, 0C, A1, 37), V(8E, 14, F8, 59), V(89, 3C, 13, EB), \
|
|
V(EE, 27, A9, CE), V(35, C9, 61, B7), V(ED, E5, 1C, E1), V(3C, B1, 47, 7A), \
|
|
V(59, DF, D2, 9C), V(3F, 73, F2, 55), V(79, CE, 14, 18), V(BF, 37, C7, 73), \
|
|
V(EA, CD, F7, 53), V(5B, AA, FD, 5F), V(14, 6F, 3D, DF), V(86, DB, 44, 78), \
|
|
V(81, F3, AF, CA), V(3E, C4, 68, B9), V(2C, 34, 24, 38), V(5F, 40, A3, C2), \
|
|
V(72, C3, 1D, 16), V(0C, 25, E2, BC), V(8B, 49, 3C, 28), V(41, 95, 0D, FF), \
|
|
V(71, 01, A8, 39), V(DE, B3, 0C, 08), V(9C, E4, B4, D8), V(90, C1, 56, 64), \
|
|
V(61, 84, CB, 7B), V(70, B6, 32, D5), V(74, 5C, 6C, 48), V(42, 57, B8, D0)
|
|
|
|
#if !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
|
|
|
|
#define V(a, b, c, d) 0x##a##b##c##d
|
|
static const uint32_t RT0[256] = { RT };
|
|
#undef V
|
|
|
|
#if !defined(MBEDTLS_AES_FEWER_TABLES)
|
|
|
|
#define V(a, b, c, d) 0x##b##c##d##a
|
|
static const uint32_t RT1[256] = { RT };
|
|
#undef V
|
|
|
|
#define V(a, b, c, d) 0x##c##d##a##b
|
|
static const uint32_t RT2[256] = { RT };
|
|
#undef V
|
|
|
|
#define V(a, b, c, d) 0x##d##a##b##c
|
|
static const uint32_t RT3[256] = { RT };
|
|
#undef V
|
|
|
|
#endif /* !MBEDTLS_AES_FEWER_TABLES */
|
|
|
|
#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
|
|
|
|
#undef RT
|
|
|
|
#if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
|
|
/*
|
|
* Round constants
|
|
*/
|
|
static const uint32_t RCON[10] =
|
|
{
|
|
0x00000001, 0x00000002, 0x00000004, 0x00000008,
|
|
0x00000010, 0x00000020, 0x00000040, 0x00000080,
|
|
0x0000001B, 0x00000036
|
|
};
|
|
#endif /* !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
|
|
|
|
#else /* MBEDTLS_AES_ROM_TABLES */
|
|
|
|
/*
|
|
* Forward S-box & tables
|
|
*/
|
|
#if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
|
|
!defined(MBEDTLS_AES_SETKEY_DEC_ALT)
|
|
static unsigned char FSb[256];
|
|
#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
|
|
!defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
|
|
#if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
|
|
static uint32_t FT0[256];
|
|
#if !defined(MBEDTLS_AES_FEWER_TABLES)
|
|
static uint32_t FT1[256];
|
|
static uint32_t FT2[256];
|
|
static uint32_t FT3[256];
|
|
#endif /* !MBEDTLS_AES_FEWER_TABLES */
|
|
#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
|
|
|
|
/*
|
|
* Reverse S-box & tables
|
|
*/
|
|
#if !(defined(MBEDTLS_AES_SETKEY_ENC_ALT) && defined(MBEDTLS_AES_DECRYPT_ALT))
|
|
static unsigned char RSb[256];
|
|
#endif /* !(defined(MBEDTLS_AES_SETKEY_ENC_ALT) && defined(MBEDTLS_AES_DECRYPT_ALT)) */
|
|
|
|
#if !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
|
|
static uint32_t RT0[256];
|
|
#if !defined(MBEDTLS_AES_FEWER_TABLES)
|
|
static uint32_t RT1[256];
|
|
static uint32_t RT2[256];
|
|
static uint32_t RT3[256];
|
|
#endif /* !MBEDTLS_AES_FEWER_TABLES */
|
|
#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
|
|
|
|
#if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
|
|
/*
|
|
* Round constants
|
|
*/
|
|
static uint32_t RCON[10];
|
|
|
|
/*
|
|
* Tables generation code
|
|
*/
|
|
#define ROTL8(x) (((x) << 8) & 0xFFFFFFFF) | ((x) >> 24)
|
|
#define XTIME(x) (((x) << 1) ^ (((x) & 0x80) ? 0x1B : 0x00))
|
|
#define MUL(x, y) (((x) && (y)) ? pow[(log[(x)]+log[(y)]) % 255] : 0)
|
|
|
|
static int aes_init_done = 0;
|
|
|
|
static void aes_gen_tables(void)
|
|
{
|
|
int i, x, y, z;
|
|
int pow[256];
|
|
int log[256];
|
|
|
|
/*
|
|
* compute pow and log tables over GF(2^8)
|
|
*/
|
|
for (i = 0, x = 1; i < 256; i++) {
|
|
pow[i] = x;
|
|
log[x] = i;
|
|
x = MBEDTLS_BYTE_0(x ^ XTIME(x));
|
|
}
|
|
|
|
/*
|
|
* calculate the round constants
|
|
*/
|
|
for (i = 0, x = 1; i < 10; i++) {
|
|
RCON[i] = (uint32_t) x;
|
|
x = MBEDTLS_BYTE_0(XTIME(x));
|
|
}
|
|
|
|
/*
|
|
* generate the forward and reverse S-boxes
|
|
*/
|
|
FSb[0x00] = 0x63;
|
|
RSb[0x63] = 0x00;
|
|
|
|
for (i = 1; i < 256; i++) {
|
|
x = pow[255 - log[i]];
|
|
|
|
y = x; y = MBEDTLS_BYTE_0((y << 1) | (y >> 7));
|
|
x ^= y; y = MBEDTLS_BYTE_0((y << 1) | (y >> 7));
|
|
x ^= y; y = MBEDTLS_BYTE_0((y << 1) | (y >> 7));
|
|
x ^= y; y = MBEDTLS_BYTE_0((y << 1) | (y >> 7));
|
|
x ^= y ^ 0x63;
|
|
|
|
FSb[i] = (unsigned char) x;
|
|
RSb[x] = (unsigned char) i;
|
|
}
|
|
|
|
/*
|
|
* generate the forward and reverse tables
|
|
*/
|
|
for (i = 0; i < 256; i++) {
|
|
x = FSb[i];
|
|
y = MBEDTLS_BYTE_0(XTIME(x));
|
|
z = MBEDTLS_BYTE_0(y ^ x);
|
|
|
|
FT0[i] = ((uint32_t) y) ^
|
|
((uint32_t) x << 8) ^
|
|
((uint32_t) x << 16) ^
|
|
((uint32_t) z << 24);
|
|
|
|
#if !defined(MBEDTLS_AES_FEWER_TABLES)
|
|
FT1[i] = ROTL8(FT0[i]);
|
|
FT2[i] = ROTL8(FT1[i]);
|
|
FT3[i] = ROTL8(FT2[i]);
|
|
#endif /* !MBEDTLS_AES_FEWER_TABLES */
|
|
|
|
x = RSb[i];
|
|
|
|
#if !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
|
|
RT0[i] = ((uint32_t) MUL(0x0E, x)) ^
|
|
((uint32_t) MUL(0x09, x) << 8) ^
|
|
((uint32_t) MUL(0x0D, x) << 16) ^
|
|
((uint32_t) MUL(0x0B, x) << 24);
|
|
|
|
#if !defined(MBEDTLS_AES_FEWER_TABLES)
|
|
RT1[i] = ROTL8(RT0[i]);
|
|
RT2[i] = ROTL8(RT1[i]);
|
|
RT3[i] = ROTL8(RT2[i]);
|
|
#endif /* !MBEDTLS_AES_FEWER_TABLES */
|
|
#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
|
|
}
|
|
}
|
|
|
|
#endif /* !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
|
|
|
|
#undef ROTL8
|
|
|
|
#endif /* MBEDTLS_AES_ROM_TABLES */
|
|
|
|
#if defined(MBEDTLS_AES_FEWER_TABLES)
|
|
|
|
#define ROTL8(x) ((uint32_t) ((x) << 8) + (uint32_t) ((x) >> 24))
|
|
#define ROTL16(x) ((uint32_t) ((x) << 16) + (uint32_t) ((x) >> 16))
|
|
#define ROTL24(x) ((uint32_t) ((x) << 24) + (uint32_t) ((x) >> 8))
|
|
|
|
#define AES_RT0(idx) RT0[idx]
|
|
#define AES_RT1(idx) ROTL8(RT0[idx])
|
|
#define AES_RT2(idx) ROTL16(RT0[idx])
|
|
#define AES_RT3(idx) ROTL24(RT0[idx])
|
|
|
|
#define AES_FT0(idx) FT0[idx]
|
|
#define AES_FT1(idx) ROTL8(FT0[idx])
|
|
#define AES_FT2(idx) ROTL16(FT0[idx])
|
|
#define AES_FT3(idx) ROTL24(FT0[idx])
|
|
|
|
#else /* MBEDTLS_AES_FEWER_TABLES */
|
|
|
|
#define AES_RT0(idx) RT0[idx]
|
|
#define AES_RT1(idx) RT1[idx]
|
|
#define AES_RT2(idx) RT2[idx]
|
|
#define AES_RT3(idx) RT3[idx]
|
|
|
|
#define AES_FT0(idx) FT0[idx]
|
|
#define AES_FT1(idx) FT1[idx]
|
|
#define AES_FT2(idx) FT2[idx]
|
|
#define AES_FT3(idx) FT3[idx]
|
|
|
|
#endif /* MBEDTLS_AES_FEWER_TABLES */
|
|
|
|
void mbedtls_aes_init(mbedtls_aes_context *ctx)
|
|
{
|
|
AES_VALIDATE(ctx != NULL);
|
|
|
|
memset(ctx, 0, sizeof(mbedtls_aes_context));
|
|
}
|
|
|
|
void mbedtls_aes_free(mbedtls_aes_context *ctx)
|
|
{
|
|
if (ctx == NULL) {
|
|
return;
|
|
}
|
|
|
|
mbedtls_platform_zeroize(ctx, sizeof(mbedtls_aes_context));
|
|
}
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_XTS)
|
|
void mbedtls_aes_xts_init(mbedtls_aes_xts_context *ctx)
|
|
{
|
|
AES_VALIDATE(ctx != NULL);
|
|
|
|
mbedtls_aes_init(&ctx->crypt);
|
|
mbedtls_aes_init(&ctx->tweak);
|
|
}
|
|
|
|
void mbedtls_aes_xts_free(mbedtls_aes_xts_context *ctx)
|
|
{
|
|
if (ctx == NULL) {
|
|
return;
|
|
}
|
|
|
|
mbedtls_aes_free(&ctx->crypt);
|
|
mbedtls_aes_free(&ctx->tweak);
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_XTS */
|
|
|
|
/* Some implementations need the round keys to be aligned.
|
|
* Return an offset to be added to buf, such that (buf + offset) is
|
|
* correctly aligned.
|
|
* Note that the offset is in units of elements of buf, i.e. 32-bit words,
|
|
* i.e. an offset of 1 means 4 bytes and so on.
|
|
*/
|
|
#if (defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)) || \
|
|
(defined(MBEDTLS_AESNI_C) && MBEDTLS_AESNI_HAVE_CODE == 2)
|
|
#define MAY_NEED_TO_ALIGN
|
|
#endif
|
|
|
|
#if defined(MAY_NEED_TO_ALIGN) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) || \
|
|
!defined(MBEDTLS_AES_SETKEY_ENC_ALT)
|
|
static unsigned mbedtls_aes_rk_offset(uint32_t *buf)
|
|
{
|
|
#if defined(MAY_NEED_TO_ALIGN)
|
|
int align_16_bytes = 0;
|
|
|
|
#if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
|
|
if (aes_padlock_ace == -1) {
|
|
aes_padlock_ace = mbedtls_padlock_has_support(MBEDTLS_PADLOCK_ACE);
|
|
}
|
|
if (aes_padlock_ace) {
|
|
align_16_bytes = 1;
|
|
}
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_AESNI_C) && MBEDTLS_AESNI_HAVE_CODE == 2
|
|
if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
|
|
align_16_bytes = 1;
|
|
}
|
|
#endif
|
|
|
|
if (align_16_bytes) {
|
|
/* These implementations needs 16-byte alignment
|
|
* for the round key array. */
|
|
unsigned delta = ((uintptr_t) buf & 0x0000000fU) / 4;
|
|
if (delta == 0) {
|
|
return 0;
|
|
} else {
|
|
return 4 - delta; // 16 bytes = 4 uint32_t
|
|
}
|
|
}
|
|
#else /* MAY_NEED_TO_ALIGN */
|
|
(void) buf;
|
|
#endif /* MAY_NEED_TO_ALIGN */
|
|
|
|
return 0;
|
|
}
|
|
#endif /* defined(MAY_NEED_TO_ALIGN) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) || \
|
|
!defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
|
|
|
|
/*
|
|
* AES key schedule (encryption)
|
|
*/
|
|
#if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
|
|
int mbedtls_aes_setkey_enc(mbedtls_aes_context *ctx, const unsigned char *key,
|
|
unsigned int keybits)
|
|
{
|
|
unsigned int i;
|
|
uint32_t *RK;
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(key != NULL);
|
|
|
|
switch (keybits) {
|
|
case 128: ctx->nr = 10; break;
|
|
case 192: ctx->nr = 12; break;
|
|
case 256: ctx->nr = 14; break;
|
|
default: return MBEDTLS_ERR_AES_INVALID_KEY_LENGTH;
|
|
}
|
|
|
|
#if !defined(MBEDTLS_AES_ROM_TABLES)
|
|
if (aes_init_done == 0) {
|
|
aes_gen_tables();
|
|
aes_init_done = 1;
|
|
}
|
|
#endif
|
|
|
|
ctx->rk = RK = ctx->buf + mbedtls_aes_rk_offset(ctx->buf);
|
|
|
|
#if defined(MBEDTLS_AESNI_HAVE_CODE)
|
|
if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
|
|
return mbedtls_aesni_setkey_enc((unsigned char *) ctx->rk, key, keybits);
|
|
}
|
|
#endif
|
|
|
|
for (i = 0; i < (keybits >> 5); i++) {
|
|
RK[i] = MBEDTLS_GET_UINT32_LE(key, i << 2);
|
|
}
|
|
|
|
switch (ctx->nr) {
|
|
case 10:
|
|
|
|
for (i = 0; i < 10; i++, RK += 4) {
|
|
RK[4] = RK[0] ^ RCON[i] ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(RK[3])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(RK[3])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(RK[3])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(RK[3])] << 24);
|
|
|
|
RK[5] = RK[1] ^ RK[4];
|
|
RK[6] = RK[2] ^ RK[5];
|
|
RK[7] = RK[3] ^ RK[6];
|
|
}
|
|
break;
|
|
|
|
case 12:
|
|
|
|
for (i = 0; i < 8; i++, RK += 6) {
|
|
RK[6] = RK[0] ^ RCON[i] ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(RK[5])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(RK[5])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(RK[5])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(RK[5])] << 24);
|
|
|
|
RK[7] = RK[1] ^ RK[6];
|
|
RK[8] = RK[2] ^ RK[7];
|
|
RK[9] = RK[3] ^ RK[8];
|
|
RK[10] = RK[4] ^ RK[9];
|
|
RK[11] = RK[5] ^ RK[10];
|
|
}
|
|
break;
|
|
|
|
case 14:
|
|
|
|
for (i = 0; i < 7; i++, RK += 8) {
|
|
RK[8] = RK[0] ^ RCON[i] ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(RK[7])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(RK[7])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(RK[7])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(RK[7])] << 24);
|
|
|
|
RK[9] = RK[1] ^ RK[8];
|
|
RK[10] = RK[2] ^ RK[9];
|
|
RK[11] = RK[3] ^ RK[10];
|
|
|
|
RK[12] = RK[4] ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(RK[11])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(RK[11])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(RK[11])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(RK[11])] << 24);
|
|
|
|
RK[13] = RK[5] ^ RK[12];
|
|
RK[14] = RK[6] ^ RK[13];
|
|
RK[15] = RK[7] ^ RK[14];
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* !MBEDTLS_AES_SETKEY_ENC_ALT */
|
|
|
|
/*
|
|
* AES key schedule (decryption)
|
|
*/
|
|
#if !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
|
|
int mbedtls_aes_setkey_dec(mbedtls_aes_context *ctx, const unsigned char *key,
|
|
unsigned int keybits)
|
|
{
|
|
int i, j, ret;
|
|
mbedtls_aes_context cty;
|
|
uint32_t *RK;
|
|
uint32_t *SK;
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(key != NULL);
|
|
|
|
mbedtls_aes_init(&cty);
|
|
|
|
ctx->rk = RK = ctx->buf + mbedtls_aes_rk_offset(ctx->buf);
|
|
|
|
/* Also checks keybits */
|
|
if ((ret = mbedtls_aes_setkey_enc(&cty, key, keybits)) != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
ctx->nr = cty.nr;
|
|
|
|
#if defined(MBEDTLS_AESNI_HAVE_CODE)
|
|
if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
|
|
mbedtls_aesni_inverse_key((unsigned char *) ctx->rk,
|
|
(const unsigned char *) cty.rk, ctx->nr);
|
|
goto exit;
|
|
}
|
|
#endif
|
|
|
|
SK = cty.rk + cty.nr * 4;
|
|
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
|
|
for (i = ctx->nr - 1, SK -= 8; i > 0; i--, SK -= 8) {
|
|
for (j = 0; j < 4; j++, SK++) {
|
|
*RK++ = AES_RT0(FSb[MBEDTLS_BYTE_0(*SK)]) ^
|
|
AES_RT1(FSb[MBEDTLS_BYTE_1(*SK)]) ^
|
|
AES_RT2(FSb[MBEDTLS_BYTE_2(*SK)]) ^
|
|
AES_RT3(FSb[MBEDTLS_BYTE_3(*SK)]);
|
|
}
|
|
}
|
|
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
|
|
exit:
|
|
mbedtls_aes_free(&cty);
|
|
|
|
return ret;
|
|
}
|
|
#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_XTS)
|
|
static int mbedtls_aes_xts_decode_keys(const unsigned char *key,
|
|
unsigned int keybits,
|
|
const unsigned char **key1,
|
|
unsigned int *key1bits,
|
|
const unsigned char **key2,
|
|
unsigned int *key2bits)
|
|
{
|
|
const unsigned int half_keybits = keybits / 2;
|
|
const unsigned int half_keybytes = half_keybits / 8;
|
|
|
|
switch (keybits) {
|
|
case 256: break;
|
|
case 512: break;
|
|
default: return MBEDTLS_ERR_AES_INVALID_KEY_LENGTH;
|
|
}
|
|
|
|
*key1bits = half_keybits;
|
|
*key2bits = half_keybits;
|
|
*key1 = &key[0];
|
|
*key2 = &key[half_keybytes];
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mbedtls_aes_xts_setkey_enc(mbedtls_aes_xts_context *ctx,
|
|
const unsigned char *key,
|
|
unsigned int keybits)
|
|
{
|
|
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
|
|
const unsigned char *key1, *key2;
|
|
unsigned int key1bits, key2bits;
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(key != NULL);
|
|
|
|
ret = mbedtls_aes_xts_decode_keys(key, keybits, &key1, &key1bits,
|
|
&key2, &key2bits);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
/* Set the tweak key. Always set tweak key for the encryption mode. */
|
|
ret = mbedtls_aes_setkey_enc(&ctx->tweak, key2, key2bits);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
/* Set crypt key for encryption. */
|
|
return mbedtls_aes_setkey_enc(&ctx->crypt, key1, key1bits);
|
|
}
|
|
|
|
int mbedtls_aes_xts_setkey_dec(mbedtls_aes_xts_context *ctx,
|
|
const unsigned char *key,
|
|
unsigned int keybits)
|
|
{
|
|
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
|
|
const unsigned char *key1, *key2;
|
|
unsigned int key1bits, key2bits;
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(key != NULL);
|
|
|
|
ret = mbedtls_aes_xts_decode_keys(key, keybits, &key1, &key1bits,
|
|
&key2, &key2bits);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
/* Set the tweak key. Always set tweak key for encryption. */
|
|
ret = mbedtls_aes_setkey_enc(&ctx->tweak, key2, key2bits);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
/* Set crypt key for decryption. */
|
|
return mbedtls_aes_setkey_dec(&ctx->crypt, key1, key1bits);
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_XTS */
|
|
|
|
#define AES_FROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3) \
|
|
do \
|
|
{ \
|
|
(X0) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y0)) ^ \
|
|
AES_FT1(MBEDTLS_BYTE_1(Y1)) ^ \
|
|
AES_FT2(MBEDTLS_BYTE_2(Y2)) ^ \
|
|
AES_FT3(MBEDTLS_BYTE_3(Y3)); \
|
|
\
|
|
(X1) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y1)) ^ \
|
|
AES_FT1(MBEDTLS_BYTE_1(Y2)) ^ \
|
|
AES_FT2(MBEDTLS_BYTE_2(Y3)) ^ \
|
|
AES_FT3(MBEDTLS_BYTE_3(Y0)); \
|
|
\
|
|
(X2) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y2)) ^ \
|
|
AES_FT1(MBEDTLS_BYTE_1(Y3)) ^ \
|
|
AES_FT2(MBEDTLS_BYTE_2(Y0)) ^ \
|
|
AES_FT3(MBEDTLS_BYTE_3(Y1)); \
|
|
\
|
|
(X3) = *RK++ ^ AES_FT0(MBEDTLS_BYTE_0(Y3)) ^ \
|
|
AES_FT1(MBEDTLS_BYTE_1(Y0)) ^ \
|
|
AES_FT2(MBEDTLS_BYTE_2(Y1)) ^ \
|
|
AES_FT3(MBEDTLS_BYTE_3(Y2)); \
|
|
} while (0)
|
|
|
|
#define AES_RROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3) \
|
|
do \
|
|
{ \
|
|
(X0) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y0)) ^ \
|
|
AES_RT1(MBEDTLS_BYTE_1(Y3)) ^ \
|
|
AES_RT2(MBEDTLS_BYTE_2(Y2)) ^ \
|
|
AES_RT3(MBEDTLS_BYTE_3(Y1)); \
|
|
\
|
|
(X1) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y1)) ^ \
|
|
AES_RT1(MBEDTLS_BYTE_1(Y0)) ^ \
|
|
AES_RT2(MBEDTLS_BYTE_2(Y3)) ^ \
|
|
AES_RT3(MBEDTLS_BYTE_3(Y2)); \
|
|
\
|
|
(X2) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y2)) ^ \
|
|
AES_RT1(MBEDTLS_BYTE_1(Y1)) ^ \
|
|
AES_RT2(MBEDTLS_BYTE_2(Y0)) ^ \
|
|
AES_RT3(MBEDTLS_BYTE_3(Y3)); \
|
|
\
|
|
(X3) = *RK++ ^ AES_RT0(MBEDTLS_BYTE_0(Y3)) ^ \
|
|
AES_RT1(MBEDTLS_BYTE_1(Y2)) ^ \
|
|
AES_RT2(MBEDTLS_BYTE_2(Y1)) ^ \
|
|
AES_RT3(MBEDTLS_BYTE_3(Y0)); \
|
|
} while (0)
|
|
|
|
/*
|
|
* AES-ECB block encryption
|
|
*/
|
|
#if !defined(MBEDTLS_AES_ENCRYPT_ALT)
|
|
int mbedtls_internal_aes_encrypt(mbedtls_aes_context *ctx,
|
|
const unsigned char input[16],
|
|
unsigned char output[16])
|
|
{
|
|
int i;
|
|
uint32_t *RK = ctx->rk;
|
|
struct {
|
|
uint32_t X[4];
|
|
uint32_t Y[4];
|
|
} t;
|
|
|
|
t.X[0] = MBEDTLS_GET_UINT32_LE(input, 0); t.X[0] ^= *RK++;
|
|
t.X[1] = MBEDTLS_GET_UINT32_LE(input, 4); t.X[1] ^= *RK++;
|
|
t.X[2] = MBEDTLS_GET_UINT32_LE(input, 8); t.X[2] ^= *RK++;
|
|
t.X[3] = MBEDTLS_GET_UINT32_LE(input, 12); t.X[3] ^= *RK++;
|
|
|
|
for (i = (ctx->nr >> 1) - 1; i > 0; i--) {
|
|
AES_FROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
|
|
AES_FROUND(t.X[0], t.X[1], t.X[2], t.X[3], t.Y[0], t.Y[1], t.Y[2], t.Y[3]);
|
|
}
|
|
|
|
AES_FROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
|
|
|
|
t.X[0] = *RK++ ^ \
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[0])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[1])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[2])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[3])] << 24);
|
|
|
|
t.X[1] = *RK++ ^ \
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[1])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[2])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[3])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[0])] << 24);
|
|
|
|
t.X[2] = *RK++ ^ \
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[2])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[3])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[0])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[1])] << 24);
|
|
|
|
t.X[3] = *RK++ ^ \
|
|
((uint32_t) FSb[MBEDTLS_BYTE_0(t.Y[3])]) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_1(t.Y[0])] << 8) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_2(t.Y[1])] << 16) ^
|
|
((uint32_t) FSb[MBEDTLS_BYTE_3(t.Y[2])] << 24);
|
|
|
|
MBEDTLS_PUT_UINT32_LE(t.X[0], output, 0);
|
|
MBEDTLS_PUT_UINT32_LE(t.X[1], output, 4);
|
|
MBEDTLS_PUT_UINT32_LE(t.X[2], output, 8);
|
|
MBEDTLS_PUT_UINT32_LE(t.X[3], output, 12);
|
|
|
|
mbedtls_platform_zeroize(&t, sizeof(t));
|
|
|
|
return 0;
|
|
}
|
|
#endif /* !MBEDTLS_AES_ENCRYPT_ALT */
|
|
|
|
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
|
|
void mbedtls_aes_encrypt(mbedtls_aes_context *ctx,
|
|
const unsigned char input[16],
|
|
unsigned char output[16])
|
|
{
|
|
MBEDTLS_IGNORE_RETURN(mbedtls_internal_aes_encrypt(ctx, input, output));
|
|
}
|
|
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
|
|
|
|
/*
|
|
* AES-ECB block decryption
|
|
*/
|
|
#if !defined(MBEDTLS_AES_DECRYPT_ALT)
|
|
int mbedtls_internal_aes_decrypt(mbedtls_aes_context *ctx,
|
|
const unsigned char input[16],
|
|
unsigned char output[16])
|
|
{
|
|
int i;
|
|
uint32_t *RK = ctx->rk;
|
|
struct {
|
|
uint32_t X[4];
|
|
uint32_t Y[4];
|
|
} t;
|
|
|
|
t.X[0] = MBEDTLS_GET_UINT32_LE(input, 0); t.X[0] ^= *RK++;
|
|
t.X[1] = MBEDTLS_GET_UINT32_LE(input, 4); t.X[1] ^= *RK++;
|
|
t.X[2] = MBEDTLS_GET_UINT32_LE(input, 8); t.X[2] ^= *RK++;
|
|
t.X[3] = MBEDTLS_GET_UINT32_LE(input, 12); t.X[3] ^= *RK++;
|
|
|
|
for (i = (ctx->nr >> 1) - 1; i > 0; i--) {
|
|
AES_RROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
|
|
AES_RROUND(t.X[0], t.X[1], t.X[2], t.X[3], t.Y[0], t.Y[1], t.Y[2], t.Y[3]);
|
|
}
|
|
|
|
AES_RROUND(t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3]);
|
|
|
|
t.X[0] = *RK++ ^ \
|
|
((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[0])]) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[3])] << 8) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[2])] << 16) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[1])] << 24);
|
|
|
|
t.X[1] = *RK++ ^ \
|
|
((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[1])]) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[0])] << 8) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[3])] << 16) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[2])] << 24);
|
|
|
|
t.X[2] = *RK++ ^ \
|
|
((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[2])]) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[1])] << 8) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[0])] << 16) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[3])] << 24);
|
|
|
|
t.X[3] = *RK++ ^ \
|
|
((uint32_t) RSb[MBEDTLS_BYTE_0(t.Y[3])]) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_1(t.Y[2])] << 8) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_2(t.Y[1])] << 16) ^
|
|
((uint32_t) RSb[MBEDTLS_BYTE_3(t.Y[0])] << 24);
|
|
|
|
MBEDTLS_PUT_UINT32_LE(t.X[0], output, 0);
|
|
MBEDTLS_PUT_UINT32_LE(t.X[1], output, 4);
|
|
MBEDTLS_PUT_UINT32_LE(t.X[2], output, 8);
|
|
MBEDTLS_PUT_UINT32_LE(t.X[3], output, 12);
|
|
|
|
mbedtls_platform_zeroize(&t, sizeof(t));
|
|
|
|
return 0;
|
|
}
|
|
#endif /* !MBEDTLS_AES_DECRYPT_ALT */
|
|
|
|
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
|
|
void mbedtls_aes_decrypt(mbedtls_aes_context *ctx,
|
|
const unsigned char input[16],
|
|
unsigned char output[16])
|
|
{
|
|
MBEDTLS_IGNORE_RETURN(mbedtls_internal_aes_decrypt(ctx, input, output));
|
|
}
|
|
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
|
|
|
|
#if defined(MAY_NEED_TO_ALIGN)
|
|
/* VIA Padlock and our intrinsics-based implementation of AESNI require
|
|
* the round keys to be aligned on a 16-byte boundary. We take care of this
|
|
* before creating them, but the AES context may have moved (this can happen
|
|
* if the library is called from a language with managed memory), and in later
|
|
* calls it might have a different alignment with respect to 16-byte memory.
|
|
* So we may need to realign.
|
|
* NOTE: In the LTS branch, the context contains a pointer to within itself,
|
|
* so if it has been moved, things will probably go pear-shaped. We keep this
|
|
* code for compatibility with the development branch, in case of future changes.
|
|
*/
|
|
static void aes_maybe_realign(mbedtls_aes_context *ctx)
|
|
{
|
|
unsigned current_offset = (unsigned) (ctx->rk - ctx->buf);
|
|
unsigned new_offset = mbedtls_aes_rk_offset(ctx->buf);
|
|
if (new_offset != current_offset) {
|
|
memmove(ctx->buf + new_offset, // new address
|
|
ctx->buf + current_offset, // current address
|
|
(ctx->nr + 1) * 16); // number of round keys * bytes per rk
|
|
ctx->rk = ctx->buf + new_offset;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* AES-ECB block encryption/decryption
|
|
*/
|
|
int mbedtls_aes_crypt_ecb(mbedtls_aes_context *ctx,
|
|
int mode,
|
|
const unsigned char input[16],
|
|
unsigned char output[16])
|
|
{
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(input != NULL);
|
|
AES_VALIDATE_RET(output != NULL);
|
|
AES_VALIDATE_RET(mode == MBEDTLS_AES_ENCRYPT ||
|
|
mode == MBEDTLS_AES_DECRYPT);
|
|
|
|
#if defined(MAY_NEED_TO_ALIGN)
|
|
aes_maybe_realign(ctx);
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_AESNI_HAVE_CODE)
|
|
if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
|
|
return mbedtls_aesni_crypt_ecb(ctx, mode, input, output);
|
|
}
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
|
|
if (aes_padlock_ace) {
|
|
return mbedtls_padlock_xcryptecb(ctx, mode, input, output);
|
|
}
|
|
#endif
|
|
|
|
if (mode == MBEDTLS_AES_ENCRYPT) {
|
|
return mbedtls_internal_aes_encrypt(ctx, input, output);
|
|
} else {
|
|
return mbedtls_internal_aes_decrypt(ctx, input, output);
|
|
}
|
|
}
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CBC)
|
|
/*
|
|
* AES-CBC buffer encryption/decryption
|
|
*/
|
|
int mbedtls_aes_crypt_cbc(mbedtls_aes_context *ctx,
|
|
int mode,
|
|
size_t length,
|
|
unsigned char iv[16],
|
|
const unsigned char *input,
|
|
unsigned char *output)
|
|
{
|
|
int i;
|
|
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
|
|
unsigned char temp[16];
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(mode == MBEDTLS_AES_ENCRYPT ||
|
|
mode == MBEDTLS_AES_DECRYPT);
|
|
AES_VALIDATE_RET(iv != NULL);
|
|
AES_VALIDATE_RET(input != NULL);
|
|
AES_VALIDATE_RET(output != NULL);
|
|
|
|
if (length % 16) {
|
|
return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH;
|
|
}
|
|
|
|
#if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
|
|
if (aes_padlock_ace) {
|
|
if (mbedtls_padlock_xcryptcbc(ctx, mode, length, iv, input, output) == 0) {
|
|
return 0;
|
|
}
|
|
|
|
// If padlock data misaligned, we just fall back to
|
|
// unaccelerated mode
|
|
//
|
|
}
|
|
#endif
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
while (length > 0) {
|
|
memcpy(temp, input, 16);
|
|
ret = mbedtls_aes_crypt_ecb(ctx, mode, input, output);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
output[i] = (unsigned char) (output[i] ^ iv[i]);
|
|
}
|
|
|
|
memcpy(iv, temp, 16);
|
|
|
|
input += 16;
|
|
output += 16;
|
|
length -= 16;
|
|
}
|
|
} else {
|
|
while (length > 0) {
|
|
for (i = 0; i < 16; i++) {
|
|
output[i] = (unsigned char) (input[i] ^ iv[i]);
|
|
}
|
|
|
|
ret = mbedtls_aes_crypt_ecb(ctx, mode, output, output);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
memcpy(iv, output, 16);
|
|
|
|
input += 16;
|
|
output += 16;
|
|
length -= 16;
|
|
}
|
|
}
|
|
ret = 0;
|
|
|
|
exit:
|
|
return ret;
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_CBC */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_XTS)
|
|
|
|
typedef unsigned char mbedtls_be128[16];
|
|
|
|
/*
|
|
* GF(2^128) multiplication function
|
|
*
|
|
* This function multiplies a field element by x in the polynomial field
|
|
* representation. It uses 64-bit word operations to gain speed but compensates
|
|
* for machine endianness and hence works correctly on both big and little
|
|
* endian machines.
|
|
*/
|
|
static void mbedtls_gf128mul_x_ble(unsigned char r[16],
|
|
const unsigned char x[16])
|
|
{
|
|
uint64_t a, b, ra, rb;
|
|
|
|
a = MBEDTLS_GET_UINT64_LE(x, 0);
|
|
b = MBEDTLS_GET_UINT64_LE(x, 8);
|
|
|
|
ra = (a << 1) ^ 0x0087 >> (8 - ((b >> 63) << 3));
|
|
rb = (a >> 63) | (b << 1);
|
|
|
|
MBEDTLS_PUT_UINT64_LE(ra, r, 0);
|
|
MBEDTLS_PUT_UINT64_LE(rb, r, 8);
|
|
}
|
|
|
|
/*
|
|
* AES-XTS buffer encryption/decryption
|
|
*/
|
|
int mbedtls_aes_crypt_xts(mbedtls_aes_xts_context *ctx,
|
|
int mode,
|
|
size_t length,
|
|
const unsigned char data_unit[16],
|
|
const unsigned char *input,
|
|
unsigned char *output)
|
|
{
|
|
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
|
|
size_t blocks = length / 16;
|
|
size_t leftover = length % 16;
|
|
unsigned char tweak[16];
|
|
unsigned char prev_tweak[16];
|
|
unsigned char tmp[16];
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(mode == MBEDTLS_AES_ENCRYPT ||
|
|
mode == MBEDTLS_AES_DECRYPT);
|
|
AES_VALIDATE_RET(data_unit != NULL);
|
|
AES_VALIDATE_RET(input != NULL);
|
|
AES_VALIDATE_RET(output != NULL);
|
|
|
|
/* Data units must be at least 16 bytes long. */
|
|
if (length < 16) {
|
|
return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH;
|
|
}
|
|
|
|
/* NIST SP 800-38E disallows data units larger than 2**20 blocks. */
|
|
if (length > (1 << 20) * 16) {
|
|
return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH;
|
|
}
|
|
|
|
/* Compute the tweak. */
|
|
ret = mbedtls_aes_crypt_ecb(&ctx->tweak, MBEDTLS_AES_ENCRYPT,
|
|
data_unit, tweak);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
while (blocks--) {
|
|
size_t i;
|
|
|
|
if (leftover && (mode == MBEDTLS_AES_DECRYPT) && blocks == 0) {
|
|
/* We are on the last block in a decrypt operation that has
|
|
* leftover bytes, so we need to use the next tweak for this block,
|
|
* and this tweak for the leftover bytes. Save the current tweak for
|
|
* the leftovers and then update the current tweak for use on this,
|
|
* the last full block. */
|
|
memcpy(prev_tweak, tweak, sizeof(tweak));
|
|
mbedtls_gf128mul_x_ble(tweak, tweak);
|
|
}
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
tmp[i] = input[i] ^ tweak[i];
|
|
}
|
|
|
|
ret = mbedtls_aes_crypt_ecb(&ctx->crypt, mode, tmp, tmp);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
output[i] = tmp[i] ^ tweak[i];
|
|
}
|
|
|
|
/* Update the tweak for the next block. */
|
|
mbedtls_gf128mul_x_ble(tweak, tweak);
|
|
|
|
output += 16;
|
|
input += 16;
|
|
}
|
|
|
|
if (leftover) {
|
|
/* If we are on the leftover bytes in a decrypt operation, we need to
|
|
* use the previous tweak for these bytes (as saved in prev_tweak). */
|
|
unsigned char *t = mode == MBEDTLS_AES_DECRYPT ? prev_tweak : tweak;
|
|
|
|
/* We are now on the final part of the data unit, which doesn't divide
|
|
* evenly by 16. It's time for ciphertext stealing. */
|
|
size_t i;
|
|
unsigned char *prev_output = output - 16;
|
|
|
|
/* Copy ciphertext bytes from the previous block to our output for each
|
|
* byte of ciphertext we won't steal. At the same time, copy the
|
|
* remainder of the input for this final round (since the loop bounds
|
|
* are the same). */
|
|
for (i = 0; i < leftover; i++) {
|
|
output[i] = prev_output[i];
|
|
tmp[i] = input[i] ^ t[i];
|
|
}
|
|
|
|
/* Copy ciphertext bytes from the previous block for input in this
|
|
* round. */
|
|
for (; i < 16; i++) {
|
|
tmp[i] = prev_output[i] ^ t[i];
|
|
}
|
|
|
|
ret = mbedtls_aes_crypt_ecb(&ctx->crypt, mode, tmp, tmp);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
/* Write the result back to the previous block, overriding the previous
|
|
* output we copied. */
|
|
for (i = 0; i < 16; i++) {
|
|
prev_output[i] = tmp[i] ^ t[i];
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_XTS */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CFB)
|
|
/*
|
|
* AES-CFB128 buffer encryption/decryption
|
|
*/
|
|
int mbedtls_aes_crypt_cfb128(mbedtls_aes_context *ctx,
|
|
int mode,
|
|
size_t length,
|
|
size_t *iv_off,
|
|
unsigned char iv[16],
|
|
const unsigned char *input,
|
|
unsigned char *output)
|
|
{
|
|
int c;
|
|
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
|
|
size_t n;
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(mode == MBEDTLS_AES_ENCRYPT ||
|
|
mode == MBEDTLS_AES_DECRYPT);
|
|
AES_VALIDATE_RET(iv_off != NULL);
|
|
AES_VALIDATE_RET(iv != NULL);
|
|
AES_VALIDATE_RET(input != NULL);
|
|
AES_VALIDATE_RET(output != NULL);
|
|
|
|
n = *iv_off;
|
|
|
|
if (n > 15) {
|
|
return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
|
|
}
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
while (length--) {
|
|
if (n == 0) {
|
|
ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
c = *input++;
|
|
*output++ = (unsigned char) (c ^ iv[n]);
|
|
iv[n] = (unsigned char) c;
|
|
|
|
n = (n + 1) & 0x0F;
|
|
}
|
|
} else {
|
|
while (length--) {
|
|
if (n == 0) {
|
|
ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
iv[n] = *output++ = (unsigned char) (iv[n] ^ *input++);
|
|
|
|
n = (n + 1) & 0x0F;
|
|
}
|
|
}
|
|
|
|
*iv_off = n;
|
|
ret = 0;
|
|
|
|
exit:
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* AES-CFB8 buffer encryption/decryption
|
|
*/
|
|
int mbedtls_aes_crypt_cfb8(mbedtls_aes_context *ctx,
|
|
int mode,
|
|
size_t length,
|
|
unsigned char iv[16],
|
|
const unsigned char *input,
|
|
unsigned char *output)
|
|
{
|
|
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
|
|
unsigned char c;
|
|
unsigned char ov[17];
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(mode == MBEDTLS_AES_ENCRYPT ||
|
|
mode == MBEDTLS_AES_DECRYPT);
|
|
AES_VALIDATE_RET(iv != NULL);
|
|
AES_VALIDATE_RET(input != NULL);
|
|
AES_VALIDATE_RET(output != NULL);
|
|
while (length--) {
|
|
memcpy(ov, iv, 16);
|
|
ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
ov[16] = *input;
|
|
}
|
|
|
|
c = *output++ = (unsigned char) (iv[0] ^ *input++);
|
|
|
|
if (mode == MBEDTLS_AES_ENCRYPT) {
|
|
ov[16] = c;
|
|
}
|
|
|
|
memcpy(iv, ov + 1, 16);
|
|
}
|
|
ret = 0;
|
|
|
|
exit:
|
|
return ret;
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_CFB */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_OFB)
|
|
/*
|
|
* AES-OFB (Output Feedback Mode) buffer encryption/decryption
|
|
*/
|
|
int mbedtls_aes_crypt_ofb(mbedtls_aes_context *ctx,
|
|
size_t length,
|
|
size_t *iv_off,
|
|
unsigned char iv[16],
|
|
const unsigned char *input,
|
|
unsigned char *output)
|
|
{
|
|
int ret = 0;
|
|
size_t n;
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(iv_off != NULL);
|
|
AES_VALIDATE_RET(iv != NULL);
|
|
AES_VALIDATE_RET(input != NULL);
|
|
AES_VALIDATE_RET(output != NULL);
|
|
|
|
n = *iv_off;
|
|
|
|
if (n > 15) {
|
|
return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
|
|
}
|
|
|
|
while (length--) {
|
|
if (n == 0) {
|
|
ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, iv, iv);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
}
|
|
*output++ = *input++ ^ iv[n];
|
|
|
|
n = (n + 1) & 0x0F;
|
|
}
|
|
|
|
*iv_off = n;
|
|
|
|
exit:
|
|
return ret;
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_OFB */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CTR)
|
|
/*
|
|
* AES-CTR buffer encryption/decryption
|
|
*/
|
|
int mbedtls_aes_crypt_ctr(mbedtls_aes_context *ctx,
|
|
size_t length,
|
|
size_t *nc_off,
|
|
unsigned char nonce_counter[16],
|
|
unsigned char stream_block[16],
|
|
const unsigned char *input,
|
|
unsigned char *output)
|
|
{
|
|
int c, i;
|
|
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
|
|
size_t n;
|
|
|
|
AES_VALIDATE_RET(ctx != NULL);
|
|
AES_VALIDATE_RET(nc_off != NULL);
|
|
AES_VALIDATE_RET(nonce_counter != NULL);
|
|
AES_VALIDATE_RET(stream_block != NULL);
|
|
AES_VALIDATE_RET(input != NULL);
|
|
AES_VALIDATE_RET(output != NULL);
|
|
|
|
n = *nc_off;
|
|
|
|
if (n > 0x0F) {
|
|
return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
|
|
}
|
|
|
|
while (length--) {
|
|
if (n == 0) {
|
|
ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, nonce_counter, stream_block);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
for (i = 16; i > 0; i--) {
|
|
if (++nonce_counter[i - 1] != 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
c = *input++;
|
|
*output++ = (unsigned char) (c ^ stream_block[n]);
|
|
|
|
n = (n + 1) & 0x0F;
|
|
}
|
|
|
|
*nc_off = n;
|
|
ret = 0;
|
|
|
|
exit:
|
|
return ret;
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_CTR */
|
|
|
|
#endif /* !MBEDTLS_AES_ALT */
|
|
|
|
#if defined(MBEDTLS_SELF_TEST)
|
|
/*
|
|
* AES test vectors from:
|
|
*
|
|
* http://csrc.nist.gov/archive/aes/rijndael/rijndael-vals.zip
|
|
*/
|
|
static const unsigned char aes_test_ecb_dec[3][16] =
|
|
{
|
|
{ 0x44, 0x41, 0x6A, 0xC2, 0xD1, 0xF5, 0x3C, 0x58,
|
|
0x33, 0x03, 0x91, 0x7E, 0x6B, 0xE9, 0xEB, 0xE0 },
|
|
{ 0x48, 0xE3, 0x1E, 0x9E, 0x25, 0x67, 0x18, 0xF2,
|
|
0x92, 0x29, 0x31, 0x9C, 0x19, 0xF1, 0x5B, 0xA4 },
|
|
{ 0x05, 0x8C, 0xCF, 0xFD, 0xBB, 0xCB, 0x38, 0x2D,
|
|
0x1F, 0x6F, 0x56, 0x58, 0x5D, 0x8A, 0x4A, 0xDE }
|
|
};
|
|
|
|
static const unsigned char aes_test_ecb_enc[3][16] =
|
|
{
|
|
{ 0xC3, 0x4C, 0x05, 0x2C, 0xC0, 0xDA, 0x8D, 0x73,
|
|
0x45, 0x1A, 0xFE, 0x5F, 0x03, 0xBE, 0x29, 0x7F },
|
|
{ 0xF3, 0xF6, 0x75, 0x2A, 0xE8, 0xD7, 0x83, 0x11,
|
|
0x38, 0xF0, 0x41, 0x56, 0x06, 0x31, 0xB1, 0x14 },
|
|
{ 0x8B, 0x79, 0xEE, 0xCC, 0x93, 0xA0, 0xEE, 0x5D,
|
|
0xFF, 0x30, 0xB4, 0xEA, 0x21, 0x63, 0x6D, 0xA4 }
|
|
};
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CBC)
|
|
static const unsigned char aes_test_cbc_dec[3][16] =
|
|
{
|
|
{ 0xFA, 0xCA, 0x37, 0xE0, 0xB0, 0xC8, 0x53, 0x73,
|
|
0xDF, 0x70, 0x6E, 0x73, 0xF7, 0xC9, 0xAF, 0x86 },
|
|
{ 0x5D, 0xF6, 0x78, 0xDD, 0x17, 0xBA, 0x4E, 0x75,
|
|
0xB6, 0x17, 0x68, 0xC6, 0xAD, 0xEF, 0x7C, 0x7B },
|
|
{ 0x48, 0x04, 0xE1, 0x81, 0x8F, 0xE6, 0x29, 0x75,
|
|
0x19, 0xA3, 0xE8, 0x8C, 0x57, 0x31, 0x04, 0x13 }
|
|
};
|
|
|
|
static const unsigned char aes_test_cbc_enc[3][16] =
|
|
{
|
|
{ 0x8A, 0x05, 0xFC, 0x5E, 0x09, 0x5A, 0xF4, 0x84,
|
|
0x8A, 0x08, 0xD3, 0x28, 0xD3, 0x68, 0x8E, 0x3D },
|
|
{ 0x7B, 0xD9, 0x66, 0xD5, 0x3A, 0xD8, 0xC1, 0xBB,
|
|
0x85, 0xD2, 0xAD, 0xFA, 0xE8, 0x7B, 0xB1, 0x04 },
|
|
{ 0xFE, 0x3C, 0x53, 0x65, 0x3E, 0x2F, 0x45, 0xB5,
|
|
0x6F, 0xCD, 0x88, 0xB2, 0xCC, 0x89, 0x8F, 0xF0 }
|
|
};
|
|
#endif /* MBEDTLS_CIPHER_MODE_CBC */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CFB)
|
|
/*
|
|
* AES-CFB128 test vectors from:
|
|
*
|
|
* http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
|
|
*/
|
|
static const unsigned char aes_test_cfb128_key[3][32] =
|
|
{
|
|
{ 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6,
|
|
0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C },
|
|
{ 0x8E, 0x73, 0xB0, 0xF7, 0xDA, 0x0E, 0x64, 0x52,
|
|
0xC8, 0x10, 0xF3, 0x2B, 0x80, 0x90, 0x79, 0xE5,
|
|
0x62, 0xF8, 0xEA, 0xD2, 0x52, 0x2C, 0x6B, 0x7B },
|
|
{ 0x60, 0x3D, 0xEB, 0x10, 0x15, 0xCA, 0x71, 0xBE,
|
|
0x2B, 0x73, 0xAE, 0xF0, 0x85, 0x7D, 0x77, 0x81,
|
|
0x1F, 0x35, 0x2C, 0x07, 0x3B, 0x61, 0x08, 0xD7,
|
|
0x2D, 0x98, 0x10, 0xA3, 0x09, 0x14, 0xDF, 0xF4 }
|
|
};
|
|
|
|
static const unsigned char aes_test_cfb128_iv[16] =
|
|
{
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
|
|
};
|
|
|
|
static const unsigned char aes_test_cfb128_pt[64] =
|
|
{
|
|
0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96,
|
|
0xE9, 0x3D, 0x7E, 0x11, 0x73, 0x93, 0x17, 0x2A,
|
|
0xAE, 0x2D, 0x8A, 0x57, 0x1E, 0x03, 0xAC, 0x9C,
|
|
0x9E, 0xB7, 0x6F, 0xAC, 0x45, 0xAF, 0x8E, 0x51,
|
|
0x30, 0xC8, 0x1C, 0x46, 0xA3, 0x5C, 0xE4, 0x11,
|
|
0xE5, 0xFB, 0xC1, 0x19, 0x1A, 0x0A, 0x52, 0xEF,
|
|
0xF6, 0x9F, 0x24, 0x45, 0xDF, 0x4F, 0x9B, 0x17,
|
|
0xAD, 0x2B, 0x41, 0x7B, 0xE6, 0x6C, 0x37, 0x10
|
|
};
|
|
|
|
static const unsigned char aes_test_cfb128_ct[3][64] =
|
|
{
|
|
{ 0x3B, 0x3F, 0xD9, 0x2E, 0xB7, 0x2D, 0xAD, 0x20,
|
|
0x33, 0x34, 0x49, 0xF8, 0xE8, 0x3C, 0xFB, 0x4A,
|
|
0xC8, 0xA6, 0x45, 0x37, 0xA0, 0xB3, 0xA9, 0x3F,
|
|
0xCD, 0xE3, 0xCD, 0xAD, 0x9F, 0x1C, 0xE5, 0x8B,
|
|
0x26, 0x75, 0x1F, 0x67, 0xA3, 0xCB, 0xB1, 0x40,
|
|
0xB1, 0x80, 0x8C, 0xF1, 0x87, 0xA4, 0xF4, 0xDF,
|
|
0xC0, 0x4B, 0x05, 0x35, 0x7C, 0x5D, 0x1C, 0x0E,
|
|
0xEA, 0xC4, 0xC6, 0x6F, 0x9F, 0xF7, 0xF2, 0xE6 },
|
|
{ 0xCD, 0xC8, 0x0D, 0x6F, 0xDD, 0xF1, 0x8C, 0xAB,
|
|
0x34, 0xC2, 0x59, 0x09, 0xC9, 0x9A, 0x41, 0x74,
|
|
0x67, 0xCE, 0x7F, 0x7F, 0x81, 0x17, 0x36, 0x21,
|
|
0x96, 0x1A, 0x2B, 0x70, 0x17, 0x1D, 0x3D, 0x7A,
|
|
0x2E, 0x1E, 0x8A, 0x1D, 0xD5, 0x9B, 0x88, 0xB1,
|
|
0xC8, 0xE6, 0x0F, 0xED, 0x1E, 0xFA, 0xC4, 0xC9,
|
|
0xC0, 0x5F, 0x9F, 0x9C, 0xA9, 0x83, 0x4F, 0xA0,
|
|
0x42, 0xAE, 0x8F, 0xBA, 0x58, 0x4B, 0x09, 0xFF },
|
|
{ 0xDC, 0x7E, 0x84, 0xBF, 0xDA, 0x79, 0x16, 0x4B,
|
|
0x7E, 0xCD, 0x84, 0x86, 0x98, 0x5D, 0x38, 0x60,
|
|
0x39, 0xFF, 0xED, 0x14, 0x3B, 0x28, 0xB1, 0xC8,
|
|
0x32, 0x11, 0x3C, 0x63, 0x31, 0xE5, 0x40, 0x7B,
|
|
0xDF, 0x10, 0x13, 0x24, 0x15, 0xE5, 0x4B, 0x92,
|
|
0xA1, 0x3E, 0xD0, 0xA8, 0x26, 0x7A, 0xE2, 0xF9,
|
|
0x75, 0xA3, 0x85, 0x74, 0x1A, 0xB9, 0xCE, 0xF8,
|
|
0x20, 0x31, 0x62, 0x3D, 0x55, 0xB1, 0xE4, 0x71 }
|
|
};
|
|
#endif /* MBEDTLS_CIPHER_MODE_CFB */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_OFB)
|
|
/*
|
|
* AES-OFB test vectors from:
|
|
*
|
|
* https://csrc.nist.gov/publications/detail/sp/800-38a/final
|
|
*/
|
|
static const unsigned char aes_test_ofb_key[3][32] =
|
|
{
|
|
{ 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6,
|
|
0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C },
|
|
{ 0x8E, 0x73, 0xB0, 0xF7, 0xDA, 0x0E, 0x64, 0x52,
|
|
0xC8, 0x10, 0xF3, 0x2B, 0x80, 0x90, 0x79, 0xE5,
|
|
0x62, 0xF8, 0xEA, 0xD2, 0x52, 0x2C, 0x6B, 0x7B },
|
|
{ 0x60, 0x3D, 0xEB, 0x10, 0x15, 0xCA, 0x71, 0xBE,
|
|
0x2B, 0x73, 0xAE, 0xF0, 0x85, 0x7D, 0x77, 0x81,
|
|
0x1F, 0x35, 0x2C, 0x07, 0x3B, 0x61, 0x08, 0xD7,
|
|
0x2D, 0x98, 0x10, 0xA3, 0x09, 0x14, 0xDF, 0xF4 }
|
|
};
|
|
|
|
static const unsigned char aes_test_ofb_iv[16] =
|
|
{
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
|
|
};
|
|
|
|
static const unsigned char aes_test_ofb_pt[64] =
|
|
{
|
|
0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96,
|
|
0xE9, 0x3D, 0x7E, 0x11, 0x73, 0x93, 0x17, 0x2A,
|
|
0xAE, 0x2D, 0x8A, 0x57, 0x1E, 0x03, 0xAC, 0x9C,
|
|
0x9E, 0xB7, 0x6F, 0xAC, 0x45, 0xAF, 0x8E, 0x51,
|
|
0x30, 0xC8, 0x1C, 0x46, 0xA3, 0x5C, 0xE4, 0x11,
|
|
0xE5, 0xFB, 0xC1, 0x19, 0x1A, 0x0A, 0x52, 0xEF,
|
|
0xF6, 0x9F, 0x24, 0x45, 0xDF, 0x4F, 0x9B, 0x17,
|
|
0xAD, 0x2B, 0x41, 0x7B, 0xE6, 0x6C, 0x37, 0x10
|
|
};
|
|
|
|
static const unsigned char aes_test_ofb_ct[3][64] =
|
|
{
|
|
{ 0x3B, 0x3F, 0xD9, 0x2E, 0xB7, 0x2D, 0xAD, 0x20,
|
|
0x33, 0x34, 0x49, 0xF8, 0xE8, 0x3C, 0xFB, 0x4A,
|
|
0x77, 0x89, 0x50, 0x8d, 0x16, 0x91, 0x8f, 0x03,
|
|
0xf5, 0x3c, 0x52, 0xda, 0xc5, 0x4e, 0xd8, 0x25,
|
|
0x97, 0x40, 0x05, 0x1e, 0x9c, 0x5f, 0xec, 0xf6,
|
|
0x43, 0x44, 0xf7, 0xa8, 0x22, 0x60, 0xed, 0xcc,
|
|
0x30, 0x4c, 0x65, 0x28, 0xf6, 0x59, 0xc7, 0x78,
|
|
0x66, 0xa5, 0x10, 0xd9, 0xc1, 0xd6, 0xae, 0x5e },
|
|
{ 0xCD, 0xC8, 0x0D, 0x6F, 0xDD, 0xF1, 0x8C, 0xAB,
|
|
0x34, 0xC2, 0x59, 0x09, 0xC9, 0x9A, 0x41, 0x74,
|
|
0xfc, 0xc2, 0x8b, 0x8d, 0x4c, 0x63, 0x83, 0x7c,
|
|
0x09, 0xe8, 0x17, 0x00, 0xc1, 0x10, 0x04, 0x01,
|
|
0x8d, 0x9a, 0x9a, 0xea, 0xc0, 0xf6, 0x59, 0x6f,
|
|
0x55, 0x9c, 0x6d, 0x4d, 0xaf, 0x59, 0xa5, 0xf2,
|
|
0x6d, 0x9f, 0x20, 0x08, 0x57, 0xca, 0x6c, 0x3e,
|
|
0x9c, 0xac, 0x52, 0x4b, 0xd9, 0xac, 0xc9, 0x2a },
|
|
{ 0xDC, 0x7E, 0x84, 0xBF, 0xDA, 0x79, 0x16, 0x4B,
|
|
0x7E, 0xCD, 0x84, 0x86, 0x98, 0x5D, 0x38, 0x60,
|
|
0x4f, 0xeb, 0xdc, 0x67, 0x40, 0xd2, 0x0b, 0x3a,
|
|
0xc8, 0x8f, 0x6a, 0xd8, 0x2a, 0x4f, 0xb0, 0x8d,
|
|
0x71, 0xab, 0x47, 0xa0, 0x86, 0xe8, 0x6e, 0xed,
|
|
0xf3, 0x9d, 0x1c, 0x5b, 0xba, 0x97, 0xc4, 0x08,
|
|
0x01, 0x26, 0x14, 0x1d, 0x67, 0xf3, 0x7b, 0xe8,
|
|
0x53, 0x8f, 0x5a, 0x8b, 0xe7, 0x40, 0xe4, 0x84 }
|
|
};
|
|
#endif /* MBEDTLS_CIPHER_MODE_OFB */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CTR)
|
|
/*
|
|
* AES-CTR test vectors from:
|
|
*
|
|
* http://www.faqs.org/rfcs/rfc3686.html
|
|
*/
|
|
|
|
static const unsigned char aes_test_ctr_key[3][16] =
|
|
{
|
|
{ 0xAE, 0x68, 0x52, 0xF8, 0x12, 0x10, 0x67, 0xCC,
|
|
0x4B, 0xF7, 0xA5, 0x76, 0x55, 0x77, 0xF3, 0x9E },
|
|
{ 0x7E, 0x24, 0x06, 0x78, 0x17, 0xFA, 0xE0, 0xD7,
|
|
0x43, 0xD6, 0xCE, 0x1F, 0x32, 0x53, 0x91, 0x63 },
|
|
{ 0x76, 0x91, 0xBE, 0x03, 0x5E, 0x50, 0x20, 0xA8,
|
|
0xAC, 0x6E, 0x61, 0x85, 0x29, 0xF9, 0xA0, 0xDC }
|
|
};
|
|
|
|
static const unsigned char aes_test_ctr_nonce_counter[3][16] =
|
|
{
|
|
{ 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
|
|
{ 0x00, 0x6C, 0xB6, 0xDB, 0xC0, 0x54, 0x3B, 0x59,
|
|
0xDA, 0x48, 0xD9, 0x0B, 0x00, 0x00, 0x00, 0x01 },
|
|
{ 0x00, 0xE0, 0x01, 0x7B, 0x27, 0x77, 0x7F, 0x3F,
|
|
0x4A, 0x17, 0x86, 0xF0, 0x00, 0x00, 0x00, 0x01 }
|
|
};
|
|
|
|
static const unsigned char aes_test_ctr_pt[3][48] =
|
|
{
|
|
{ 0x53, 0x69, 0x6E, 0x67, 0x6C, 0x65, 0x20, 0x62,
|
|
0x6C, 0x6F, 0x63, 0x6B, 0x20, 0x6D, 0x73, 0x67 },
|
|
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
|
|
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F },
|
|
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
|
|
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
|
|
0x20, 0x21, 0x22, 0x23 }
|
|
};
|
|
|
|
static const unsigned char aes_test_ctr_ct[3][48] =
|
|
{
|
|
{ 0xE4, 0x09, 0x5D, 0x4F, 0xB7, 0xA7, 0xB3, 0x79,
|
|
0x2D, 0x61, 0x75, 0xA3, 0x26, 0x13, 0x11, 0xB8 },
|
|
{ 0x51, 0x04, 0xA1, 0x06, 0x16, 0x8A, 0x72, 0xD9,
|
|
0x79, 0x0D, 0x41, 0xEE, 0x8E, 0xDA, 0xD3, 0x88,
|
|
0xEB, 0x2E, 0x1E, 0xFC, 0x46, 0xDA, 0x57, 0xC8,
|
|
0xFC, 0xE6, 0x30, 0xDF, 0x91, 0x41, 0xBE, 0x28 },
|
|
{ 0xC1, 0xCF, 0x48, 0xA8, 0x9F, 0x2F, 0xFD, 0xD9,
|
|
0xCF, 0x46, 0x52, 0xE9, 0xEF, 0xDB, 0x72, 0xD7,
|
|
0x45, 0x40, 0xA4, 0x2B, 0xDE, 0x6D, 0x78, 0x36,
|
|
0xD5, 0x9A, 0x5C, 0xEA, 0xAE, 0xF3, 0x10, 0x53,
|
|
0x25, 0xB2, 0x07, 0x2F }
|
|
};
|
|
|
|
static const int aes_test_ctr_len[3] =
|
|
{ 16, 32, 36 };
|
|
#endif /* MBEDTLS_CIPHER_MODE_CTR */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_XTS)
|
|
/*
|
|
* AES-XTS test vectors from:
|
|
*
|
|
* IEEE P1619/D16 Annex B
|
|
* https://web.archive.org/web/20150629024421/http://grouper.ieee.org/groups/1619/email/pdf00086.pdf
|
|
* (Archived from original at http://grouper.ieee.org/groups/1619/email/pdf00086.pdf)
|
|
*/
|
|
static const unsigned char aes_test_xts_key[][32] =
|
|
{
|
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
|
{ 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
|
|
0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
|
|
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
|
|
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
|
|
{ 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
|
|
0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0,
|
|
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
|
|
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
|
|
};
|
|
|
|
static const unsigned char aes_test_xts_pt32[][32] =
|
|
{
|
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
|
{ 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
|
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
|
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
|
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
|
|
{ 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
|
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
|
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
|
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
|
|
};
|
|
|
|
static const unsigned char aes_test_xts_ct32[][32] =
|
|
{
|
|
{ 0x91, 0x7c, 0xf6, 0x9e, 0xbd, 0x68, 0xb2, 0xec,
|
|
0x9b, 0x9f, 0xe9, 0xa3, 0xea, 0xdd, 0xa6, 0x92,
|
|
0xcd, 0x43, 0xd2, 0xf5, 0x95, 0x98, 0xed, 0x85,
|
|
0x8c, 0x02, 0xc2, 0x65, 0x2f, 0xbf, 0x92, 0x2e },
|
|
{ 0xc4, 0x54, 0x18, 0x5e, 0x6a, 0x16, 0x93, 0x6e,
|
|
0x39, 0x33, 0x40, 0x38, 0xac, 0xef, 0x83, 0x8b,
|
|
0xfb, 0x18, 0x6f, 0xff, 0x74, 0x80, 0xad, 0xc4,
|
|
0x28, 0x93, 0x82, 0xec, 0xd6, 0xd3, 0x94, 0xf0 },
|
|
{ 0xaf, 0x85, 0x33, 0x6b, 0x59, 0x7a, 0xfc, 0x1a,
|
|
0x90, 0x0b, 0x2e, 0xb2, 0x1e, 0xc9, 0x49, 0xd2,
|
|
0x92, 0xdf, 0x4c, 0x04, 0x7e, 0x0b, 0x21, 0x53,
|
|
0x21, 0x86, 0xa5, 0x97, 0x1a, 0x22, 0x7a, 0x89 },
|
|
};
|
|
|
|
static const unsigned char aes_test_xts_data_unit[][16] =
|
|
{
|
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
|
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
|
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
|
};
|
|
|
|
#endif /* MBEDTLS_CIPHER_MODE_XTS */
|
|
|
|
/*
|
|
* Checkup routine
|
|
*/
|
|
int mbedtls_aes_self_test(int verbose)
|
|
{
|
|
int ret = 0, i, j, u, mode;
|
|
unsigned int keybits;
|
|
unsigned char key[32];
|
|
unsigned char buf[64];
|
|
const unsigned char *aes_tests;
|
|
#if defined(MBEDTLS_CIPHER_MODE_CBC) || defined(MBEDTLS_CIPHER_MODE_CFB) || \
|
|
defined(MBEDTLS_CIPHER_MODE_OFB)
|
|
unsigned char iv[16];
|
|
#endif
|
|
#if defined(MBEDTLS_CIPHER_MODE_CBC)
|
|
unsigned char prv[16];
|
|
#endif
|
|
#if defined(MBEDTLS_CIPHER_MODE_CTR) || defined(MBEDTLS_CIPHER_MODE_CFB) || \
|
|
defined(MBEDTLS_CIPHER_MODE_OFB)
|
|
size_t offset;
|
|
#endif
|
|
#if defined(MBEDTLS_CIPHER_MODE_CTR) || defined(MBEDTLS_CIPHER_MODE_XTS)
|
|
int len;
|
|
#endif
|
|
#if defined(MBEDTLS_CIPHER_MODE_CTR)
|
|
unsigned char nonce_counter[16];
|
|
unsigned char stream_block[16];
|
|
#endif
|
|
mbedtls_aes_context ctx;
|
|
|
|
memset(key, 0, 32);
|
|
mbedtls_aes_init(&ctx);
|
|
|
|
if (verbose != 0) {
|
|
#if defined(MBEDTLS_AES_ALT)
|
|
mbedtls_printf(" AES note: alternative implementation.\n");
|
|
#else /* MBEDTLS_AES_ALT */
|
|
#if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
|
|
if (mbedtls_padlock_has_support(MBEDTLS_PADLOCK_ACE)) {
|
|
mbedtls_printf(" AES note: using VIA Padlock.\n");
|
|
} else
|
|
#endif
|
|
#if defined(MBEDTLS_AESNI_HAVE_CODE)
|
|
if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
|
|
mbedtls_printf(" AES note: using AESNI via ");
|
|
#if MBEDTLS_AESNI_HAVE_CODE == 1
|
|
mbedtls_printf("assembly");
|
|
#elif MBEDTLS_AESNI_HAVE_CODE == 2
|
|
mbedtls_printf("intrinsics");
|
|
#else
|
|
mbedtls_printf("(unknown)");
|
|
#endif
|
|
mbedtls_printf(".\n");
|
|
} else
|
|
#endif
|
|
mbedtls_printf(" AES note: built-in implementation.\n");
|
|
#endif /* MBEDTLS_AES_ALT */
|
|
}
|
|
|
|
/*
|
|
* ECB mode
|
|
*/
|
|
for (i = 0; i < 6; i++) {
|
|
u = i >> 1;
|
|
keybits = 128 + u * 64;
|
|
mode = i & 1;
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf(" AES-ECB-%3u (%s): ", keybits,
|
|
(mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
|
|
}
|
|
|
|
memset(buf, 0, 16);
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
ret = mbedtls_aes_setkey_dec(&ctx, key, keybits);
|
|
aes_tests = aes_test_ecb_dec[u];
|
|
} else {
|
|
ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
|
|
aes_tests = aes_test_ecb_enc[u];
|
|
}
|
|
|
|
/*
|
|
* AES-192 is an optional feature that may be unavailable when
|
|
* there is an alternative underlying implementation i.e. when
|
|
* MBEDTLS_AES_ALT is defined.
|
|
*/
|
|
if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
|
|
mbedtls_printf("skipped\n");
|
|
continue;
|
|
} else if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
for (j = 0; j < 10000; j++) {
|
|
ret = mbedtls_aes_crypt_ecb(&ctx, mode, buf, buf);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
if (memcmp(buf, aes_tests, 16) != 0) {
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("passed\n");
|
|
}
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("\n");
|
|
}
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CBC)
|
|
/*
|
|
* CBC mode
|
|
*/
|
|
for (i = 0; i < 6; i++) {
|
|
u = i >> 1;
|
|
keybits = 128 + u * 64;
|
|
mode = i & 1;
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf(" AES-CBC-%3u (%s): ", keybits,
|
|
(mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
|
|
}
|
|
|
|
memset(iv, 0, 16);
|
|
memset(prv, 0, 16);
|
|
memset(buf, 0, 16);
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
ret = mbedtls_aes_setkey_dec(&ctx, key, keybits);
|
|
aes_tests = aes_test_cbc_dec[u];
|
|
} else {
|
|
ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
|
|
aes_tests = aes_test_cbc_enc[u];
|
|
}
|
|
|
|
/*
|
|
* AES-192 is an optional feature that may be unavailable when
|
|
* there is an alternative underlying implementation i.e. when
|
|
* MBEDTLS_AES_ALT is defined.
|
|
*/
|
|
if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
|
|
mbedtls_printf("skipped\n");
|
|
continue;
|
|
} else if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
for (j = 0; j < 10000; j++) {
|
|
if (mode == MBEDTLS_AES_ENCRYPT) {
|
|
unsigned char tmp[16];
|
|
|
|
memcpy(tmp, prv, 16);
|
|
memcpy(prv, buf, 16);
|
|
memcpy(buf, tmp, 16);
|
|
}
|
|
|
|
ret = mbedtls_aes_crypt_cbc(&ctx, mode, 16, iv, buf, buf);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
}
|
|
|
|
if (memcmp(buf, aes_tests, 16) != 0) {
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("passed\n");
|
|
}
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("\n");
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_CBC */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CFB)
|
|
/*
|
|
* CFB128 mode
|
|
*/
|
|
for (i = 0; i < 6; i++) {
|
|
u = i >> 1;
|
|
keybits = 128 + u * 64;
|
|
mode = i & 1;
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf(" AES-CFB128-%3u (%s): ", keybits,
|
|
(mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
|
|
}
|
|
|
|
memcpy(iv, aes_test_cfb128_iv, 16);
|
|
memcpy(key, aes_test_cfb128_key[u], keybits / 8);
|
|
|
|
offset = 0;
|
|
ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
|
|
/*
|
|
* AES-192 is an optional feature that may be unavailable when
|
|
* there is an alternative underlying implementation i.e. when
|
|
* MBEDTLS_AES_ALT is defined.
|
|
*/
|
|
if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
|
|
mbedtls_printf("skipped\n");
|
|
continue;
|
|
} else if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
memcpy(buf, aes_test_cfb128_ct[u], 64);
|
|
aes_tests = aes_test_cfb128_pt;
|
|
} else {
|
|
memcpy(buf, aes_test_cfb128_pt, 64);
|
|
aes_tests = aes_test_cfb128_ct[u];
|
|
}
|
|
|
|
ret = mbedtls_aes_crypt_cfb128(&ctx, mode, 64, &offset, iv, buf, buf);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
if (memcmp(buf, aes_tests, 64) != 0) {
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("passed\n");
|
|
}
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("\n");
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_CFB */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_OFB)
|
|
/*
|
|
* OFB mode
|
|
*/
|
|
for (i = 0; i < 6; i++) {
|
|
u = i >> 1;
|
|
keybits = 128 + u * 64;
|
|
mode = i & 1;
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf(" AES-OFB-%3u (%s): ", keybits,
|
|
(mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
|
|
}
|
|
|
|
memcpy(iv, aes_test_ofb_iv, 16);
|
|
memcpy(key, aes_test_ofb_key[u], keybits / 8);
|
|
|
|
offset = 0;
|
|
ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
|
|
/*
|
|
* AES-192 is an optional feature that may be unavailable when
|
|
* there is an alternative underlying implementation i.e. when
|
|
* MBEDTLS_AES_ALT is defined.
|
|
*/
|
|
if (ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192) {
|
|
mbedtls_printf("skipped\n");
|
|
continue;
|
|
} else if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
memcpy(buf, aes_test_ofb_ct[u], 64);
|
|
aes_tests = aes_test_ofb_pt;
|
|
} else {
|
|
memcpy(buf, aes_test_ofb_pt, 64);
|
|
aes_tests = aes_test_ofb_ct[u];
|
|
}
|
|
|
|
ret = mbedtls_aes_crypt_ofb(&ctx, 64, &offset, iv, buf, buf);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
if (memcmp(buf, aes_tests, 64) != 0) {
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("passed\n");
|
|
}
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("\n");
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_OFB */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_CTR)
|
|
/*
|
|
* CTR mode
|
|
*/
|
|
for (i = 0; i < 6; i++) {
|
|
u = i >> 1;
|
|
mode = i & 1;
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf(" AES-CTR-128 (%s): ",
|
|
(mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
|
|
}
|
|
|
|
memcpy(nonce_counter, aes_test_ctr_nonce_counter[u], 16);
|
|
memcpy(key, aes_test_ctr_key[u], 16);
|
|
|
|
offset = 0;
|
|
if ((ret = mbedtls_aes_setkey_enc(&ctx, key, 128)) != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
len = aes_test_ctr_len[u];
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
memcpy(buf, aes_test_ctr_ct[u], len);
|
|
aes_tests = aes_test_ctr_pt[u];
|
|
} else {
|
|
memcpy(buf, aes_test_ctr_pt[u], len);
|
|
aes_tests = aes_test_ctr_ct[u];
|
|
}
|
|
|
|
ret = mbedtls_aes_crypt_ctr(&ctx, len, &offset, nonce_counter,
|
|
stream_block, buf, buf);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
if (memcmp(buf, aes_tests, len) != 0) {
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("passed\n");
|
|
}
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("\n");
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_CTR */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_XTS)
|
|
{
|
|
static const int num_tests =
|
|
sizeof(aes_test_xts_key) / sizeof(*aes_test_xts_key);
|
|
mbedtls_aes_xts_context ctx_xts;
|
|
|
|
/*
|
|
* XTS mode
|
|
*/
|
|
mbedtls_aes_xts_init(&ctx_xts);
|
|
|
|
for (i = 0; i < num_tests << 1; i++) {
|
|
const unsigned char *data_unit;
|
|
u = i >> 1;
|
|
mode = i & 1;
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf(" AES-XTS-128 (%s): ",
|
|
(mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
|
|
}
|
|
|
|
memset(key, 0, sizeof(key));
|
|
memcpy(key, aes_test_xts_key[u], 32);
|
|
data_unit = aes_test_xts_data_unit[u];
|
|
|
|
len = sizeof(*aes_test_xts_ct32);
|
|
|
|
if (mode == MBEDTLS_AES_DECRYPT) {
|
|
ret = mbedtls_aes_xts_setkey_dec(&ctx_xts, key, 256);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
memcpy(buf, aes_test_xts_ct32[u], len);
|
|
aes_tests = aes_test_xts_pt32[u];
|
|
} else {
|
|
ret = mbedtls_aes_xts_setkey_enc(&ctx_xts, key, 256);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
memcpy(buf, aes_test_xts_pt32[u], len);
|
|
aes_tests = aes_test_xts_ct32[u];
|
|
}
|
|
|
|
|
|
ret = mbedtls_aes_crypt_xts(&ctx_xts, mode, len, data_unit,
|
|
buf, buf);
|
|
if (ret != 0) {
|
|
goto exit;
|
|
}
|
|
|
|
if (memcmp(buf, aes_tests, len) != 0) {
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("passed\n");
|
|
}
|
|
}
|
|
|
|
if (verbose != 0) {
|
|
mbedtls_printf("\n");
|
|
}
|
|
|
|
mbedtls_aes_xts_free(&ctx_xts);
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_XTS */
|
|
|
|
ret = 0;
|
|
|
|
exit:
|
|
if (ret != 0 && verbose != 0) {
|
|
mbedtls_printf("failed\n");
|
|
}
|
|
|
|
mbedtls_aes_free(&ctx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* MBEDTLS_SELF_TEST */
|
|
|
|
#endif /* MBEDTLS_AES_C */
|