| /* |
| * FIPS-197 compliant AES implementation |
| * |
| * Copyright The Mbed TLS Contributors |
| * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later |
| */ |
| /* |
| * The AES block cipher was designed by Vincent Rijmen and Joan Daemen. |
| * |
| * https://csrc.nist.gov/csrc/media/projects/cryptographic-standards-and-guidelines/documents/aes-development/rijndael-ammended.pdf |
| * http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf |
| */ |
| |
| #include "common.h" |
| |
| #if defined(MBEDTLS_AES_C) |
| |
| #include <string.h> |
| |
| #include "mbedtls/aes.h" |
| #include "mbedtls/platform.h" |
| #include "mbedtls/platform_util.h" |
| #include "mbedtls/error.h" |
| |
| #if defined(MBEDTLS_AES_USE_HARDWARE_ONLY) |
| #if !((defined(MBEDTLS_ARCH_IS_ARMV8_A) && defined(MBEDTLS_AESCE_C)) || \ |
| (defined(MBEDTLS_ARCH_IS_X64) && defined(MBEDTLS_AESNI_C)) || \ |
| (defined(MBEDTLS_ARCH_IS_X86) && defined(MBEDTLS_AESNI_C))) |
| #error "MBEDTLS_AES_USE_HARDWARE_ONLY defined, but not all prerequisites" |
| #endif |
| #endif |
| |
| #if defined(MBEDTLS_ARCH_IS_X86) |
| #if defined(MBEDTLS_PADLOCK_C) |
| #if !defined(MBEDTLS_HAVE_ASM) |
| #error "MBEDTLS_PADLOCK_C defined, but not all prerequisites" |
| #endif |
| #if defined(MBEDTLS_AES_USE_HARDWARE_ONLY) |
| #error "MBEDTLS_AES_USE_HARDWARE_ONLY cannot be defined when " \ |
| "MBEDTLS_PADLOCK_C is set" |
| #endif |
| #endif |
| #endif |
| |
| #if defined(MBEDTLS_PADLOCK_C) |
| #include "padlock.h" |
| #endif |
| #if defined(MBEDTLS_AESNI_C) |
| #include "aesni.h" |
| #endif |
| #if defined(MBEDTLS_AESCE_C) |
| #include "aesce.h" |
| #endif |
| |
| #include "mbedtls/platform.h" |
| #include "ctr.h" |
| |
| /* |
| * This is a convenience shorthand macro to check if we need reverse S-box and |
| * reverse tables. It's private and only defined in this file. |
| */ |
| #if (!defined(MBEDTLS_AES_DECRYPT_ALT) || \ |
| (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY))) && \ |
| !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT) |
| #define MBEDTLS_AES_NEED_REVERSE_TABLES |
| #endif |
| |
| #if !defined(MBEDTLS_AES_ALT) |
| |
| #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE) |
| static int aes_padlock_ace = -1; |
| #endif |
| |
| #if defined(MBEDTLS_AES_ROM_TABLES) |
| /* |
| * Forward S-box |
| */ |
| MBEDTLS_MAYBE_UNUSED static const unsigned char FSb[256] = |
| { |
| 0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, |
| 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76, |
| 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, |
| 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0, |
| 0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, |
| 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15, |
| 0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, |
| 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75, |
| 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0, |
| 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84, |
| 0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B, |
| 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF, |
| 0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, |
| 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8, |
| 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5, |
| 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2, |
| 0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17, |
| 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73, |
| 0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, |
| 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB, |
| 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C, |
| 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79, |
| 0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9, |
| 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08, |
| 0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, |
| 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A, |
| 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, |
| 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E, |
| 0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, |
| 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF, |
| 0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, |
| 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16 |
| }; |
| |
| /* |
| * Forward tables |
| */ |
| #define FT \ |
| \ |
| V(A5, 63, 63, C6), V(84, 7C, 7C, F8), V(99, 77, 77, EE), V(8D, 7B, 7B, F6), \ |
| V(0D, F2, F2, FF), V(BD, 6B, 6B, D6), V(B1, 6F, 6F, DE), V(54, C5, C5, 91), \ |
| V(50, 30, 30, 60), V(03, 01, 01, 02), V(A9, 67, 67, CE), V(7D, 2B, 2B, 56), \ |
| V(19, FE, FE, E7), V(62, D7, D7, B5), V(E6, AB, AB, 4D), V(9A, 76, 76, EC), \ |
| V(45, CA, CA, 8F), V(9D, 82, 82, 1F), V(40, C9, C9, 89), V(87, 7D, 7D, FA), \ |
| V(15, FA, FA, EF), V(EB, 59, 59, B2), V(C9, 47, 47, 8E), V(0B, F0, F0, FB), \ |
| V(EC, AD, AD, 41), V(67, D4, D4, B3), V(FD, A2, A2, 5F), V(EA, AF, AF, 45), \ |
| V(BF, 9C, 9C, 23), V(F7, A4, A4, 53), V(96, 72, 72, E4), V(5B, C0, C0, 9B), \ |
| V(C2, B7, B7, 75), V(1C, FD, FD, E1), V(AE, 93, 93, 3D), V(6A, 26, 26, 4C), \ |
| V(5A, 36, 36, 6C), V(41, 3F, 3F, 7E), V(02, F7, F7, F5), V(4F, CC, CC, 83), \ |
| V(5C, 34, 34, 68), V(F4, A5, A5, 51), V(34, E5, E5, D1), V(08, F1, F1, F9), \ |
| V(93, 71, 71, E2), V(73, D8, D8, AB), V(53, 31, 31, 62), V(3F, 15, 15, 2A), \ |
| V(0C, 04, 04, 08), V(52, C7, C7, 95), V(65, 23, 23, 46), V(5E, C3, C3, 9D), \ |
| V(28, 18, 18, 30), V(A1, 96, 96, 37), V(0F, 05, 05, 0A), V(B5, 9A, 9A, 2F), \ |
| V(09, 07, 07, 0E), V(36, 12, 12, 24), V(9B, 80, 80, 1B), V(3D, E2, E2, DF), \ |
| V(26, EB, EB, CD), V(69, 27, 27, 4E), V(CD, B2, B2, 7F), V(9F, 75, 75, EA), \ |
| V(1B, 09, 09, 12), V(9E, 83, 83, 1D), V(74, 2C, 2C, 58), V(2E, 1A, 1A, 34), \ |
| V(2D, 1B, 1B, 36), V(B2, 6E, 6E, DC), V(EE, 5A, 5A, B4), V(FB, A0, A0, 5B), \ |
| V(F6, 52, 52, A4), V(4D, 3B, 3B, 76), V(61, D6, D6, B7), V(CE, B3, B3, 7D), \ |
| V(7B, 29, 29, 52), V(3E, E3, E3, DD), V(71, 2F, 2F, 5E), V(97, 84, 84, 13), \ |
| V(F5, 53, 53, A6), V(68, D1, D1, B9), V(00, 00, 00, 00), V(2C, ED, ED, C1), \ |
| V(60, 20, 20, 40), V(1F, FC, FC, E3), V(C8, B1, B1, 79), V(ED, 5B, 5B, B6), \ |
| V(BE, 6A, 6A, D4), V(46, CB, CB, 8D), V(D9, BE, BE, 67), V(4B, 39, 39, 72), \ |
| V(DE, 4A, 4A, 94), V(D4, 4C, 4C, 98), V(E8, 58, 58, B0), V(4A, CF, CF, 85), \ |
| V(6B, D0, D0, BB), V(2A, EF, EF, C5), V(E5, AA, AA, 4F), V(16, FB, FB, ED), \ |
| V(C5, 43, 43, 86), V(D7, 4D, 4D, 9A), V(55, 33, 33, 66), V(94, 85, 85, 11), \ |
| V(CF, 45, 45, 8A), V(10, F9, F9, E9), V(06, 02, 02, 04), V(81, 7F, 7F, FE), \ |
| V(F0, 50, 50, A0), V(44, 3C, 3C, 78), V(BA, 9F, 9F, 25), V(E3, A8, A8, 4B), \ |
| V(F3, 51, 51, A2), V(FE, A3, A3, 5D), V(C0, 40, 40, 80), V(8A, 8F, 8F, 05), \ |
| V(AD, 92, 92, 3F), V(BC, 9D, 9D, 21), V(48, 38, 38, 70), V(04, F5, F5, F1), \ |
| V(DF, BC, BC, 63), V(C1, B6, B6, 77), V(75, DA, DA, AF), V(63, 21, 21, 42), \ |
| V(30, 10, 10, 20), V(1A, FF, FF, E5), V(0E, F3, F3, FD), V(6D, D2, D2, BF), \ |
| V(4C, CD, CD, 81), V(14, 0C, 0C, 18), V(35, 13, 13, 26), V(2F, EC, EC, C3), \ |
| V(E1, 5F, 5F, BE), V(A2, 97, 97, 35), V(CC, 44, 44, 88), V(39, 17, 17, 2E), \ |
| V(57, C4, C4, 93), V(F2, A7, A7, 55), V(82, 7E, 7E, FC), V(47, 3D, 3D, 7A), \ |
| V(AC, 64, 64, C8), V(E7, 5D, 5D, BA), V(2B, 19, 19, 32), V(95, 73, 73, E6), \ |
| V(A0, 60, 60, C0), V(98, 81, 81, 19), V(D1, 4F, 4F, 9E), V(7F, DC, DC, A3), \ |
| V(66, 22, 22, 44), V(7E, 2A, 2A, 54), V(AB, 90, 90, 3B), V(83, 88, 88, 0B), \ |
| V(CA, 46, 46, 8C), V(29, EE, EE, C7), V(D3, B8, B8, 6B), V(3C, 14, 14, 28), \ |
| V(79, DE, DE, A7), V(E2, 5E, 5E, BC), V(1D, 0B, 0B, 16), V(76, DB, DB, AD), \ |
| V(3B, E0, E0, DB), V(56, 32, 32, 64), V(4E, 3A, 3A, 74), V(1E, 0A, 0A, 14), \ |
| V(DB, 49, 49, 92), V(0A, 06, 06, 0C), V(6C, 24, 24, 48), V(E4, 5C, 5C, B8), \ |
| V(5D, C2, C2, 9F), V(6E, D3, D3, BD), V(EF, AC, AC, 43), V(A6, 62, 62, C4), \ |
| V(A8, 91, 91, 39), V(A4, 95, 95, 31), V(37, E4, E4, D3), V(8B, 79, 79, F2), \ |
| V(32, E7, E7, D5), V(43, C8, C8, 8B), V(59, 37, 37, 6E), V(B7, 6D, 6D, DA), \ |
| V(8C, 8D, 8D, 01), V(64, D5, D5, B1), V(D2, 4E, 4E, 9C), V(E0, A9, A9, 49), \ |
| V(B4, 6C, 6C, D8), V(FA, 56, 56, AC), V(07, F4, F4, F3), V(25, EA, EA, CF), \ |
| V(AF, 65, 65, CA), V(8E, 7A, 7A, F4), V(E9, AE, AE, 47), V(18, 08, 08, 10), \ |
| V(D5, BA, BA, 6F), V(88, 78, 78, F0), V(6F, 25, 25, 4A), V(72, 2E, 2E, 5C), \ |
| V(24, 1C, 1C, 38), V(F1, A6, A6, 57), V(C7, B4, B4, 73), V(51, C6, C6, 97), \ |
| V(23, E8, E8, CB), V(7C, DD, DD, A1), V(9C, 74, 74, E8), V(21, 1F, 1F, 3E), \ |
| V(DD, 4B, 4B, 96), V(DC, BD, BD, 61), V(86, 8B, 8B, 0D), V(85, 8A, 8A, 0F), \ |
| V(90, 70, 70, E0), V(42, 3E, 3E, 7C), V(C4, B5, B5, 71), V(AA, 66, 66, CC), \ |
| V(D8, 48, 48, 90), V(05, 03, 03, 06), V(01, F6, F6, F7), V(12, 0E, 0E, 1C), \ |
| V(A3, 61, 61, C2), V(5F, 35, 35, 6A), V(F9, 57, 57, AE), V(D0, B9, B9, 69), \ |
| V(91, 86, 86, 17), V(58, C1, C1, 99), V(27, 1D, 1D, 3A), V(B9, 9E, 9E, 27), \ |
| V(38, E1, E1, D9), V(13, F8, F8, EB), V(B3, 98, 98, 2B), V(33, 11, 11, 22), \ |
| V(BB, 69, 69, D2), V(70, D9, D9, A9), V(89, 8E, 8E, 07), V(A7, 94, 94, 33), \ |
| V(B6, 9B, 9B, 2D), V(22, 1E, 1E, 3C), V(92, 87, 87, 15), V(20, E9, E9, C9), \ |
| V(49, CE, CE, 87), V(FF, 55, 55, AA), V(78, 28, 28, 50), V(7A, DF, DF, A5), \ |
| V(8F, 8C, 8C, 03), V(F8, A1, A1, 59), V(80, 89, 89, 09), V(17, 0D, 0D, 1A), \ |
| V(DA, BF, BF, 65), V(31, E6, E6, D7), V(C6, 42, 42, 84), V(B8, 68, 68, D0), \ |
| V(C3, 41, 41, 82), V(B0, 99, 99, 29), V(77, 2D, 2D, 5A), V(11, 0F, 0F, 1E), \ |
| V(CB, B0, B0, 7B), V(FC, 54, 54, A8), V(D6, BB, BB, 6D), V(3A, 16, 16, 2C) |
| |
| #define V(a, b, c, d) 0x##a##b##c##d |
| MBEDTLS_MAYBE_UNUSED static const uint32_t FT0[256] = { FT }; |
| #undef V |
| |
| #define V(a, b, c, d) 0x##b##c##d##a |
| MBEDTLS_MAYBE_UNUSED static const uint32_t FT1[256] = { FT }; |
| #undef V |
| |
| #define V(a, b, c, d) 0x##c##d##a##b |
| MBEDTLS_MAYBE_UNUSED static const uint32_t FT2[256] = { FT }; |
| #undef V |
| |
| #define V(a, b, c, d) 0x##d##a##b##c |
| MBEDTLS_MAYBE_UNUSED static const uint32_t FT3[256] = { FT }; |
| #undef V |
| |
| #undef FT |
| |
| /* |
| * Reverse S-box |
| */ |
| MBEDTLS_MAYBE_UNUSED static const unsigned char RSb[256] = |
| { |
| 0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38, |
| 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB, |
| 0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87, |
| 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB, |
| 0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D, |
| 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E, |
| 0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2, |
| 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25, |
| 0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16, |
| 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92, |
| 0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA, |
| 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84, |
| 0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A, |
| 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06, |
| 0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02, |
| 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B, |
| 0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA, |
| 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73, |
| 0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85, |
| 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E, |
| 0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89, |
| 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B, |
| 0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20, |
| 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4, |
| 0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31, |
| 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F, |
| 0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D, |
| 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF, |
| 0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0, |
| 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61, |
| 0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26, |
| 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D |
| }; |
| |
| /* |
| * Reverse tables |
| */ |
| #define RT \ |
| \ |
| 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) |
| |
| |
| #define V(a, b, c, d) 0x##a##b##c##d |
| MBEDTLS_MAYBE_UNUSED static const uint32_t RT0[256] = { RT }; |
| #undef V |
| |
| #define V(a, b, c, d) 0x##b##c##d##a |
| MBEDTLS_MAYBE_UNUSED static const uint32_t RT1[256] = { RT }; |
| #undef V |
| |
| #define V(a, b, c, d) 0x##c##d##a##b |
| MBEDTLS_MAYBE_UNUSED static const uint32_t RT2[256] = { RT }; |
| #undef V |
| |
| #define V(a, b, c, d) 0x##d##a##b##c |
| MBEDTLS_MAYBE_UNUSED static const uint32_t RT3[256] = { RT }; |
| #undef V |
| |
| #undef RT |
| |
| /* |
| * Round constants |
| */ |
| MBEDTLS_MAYBE_UNUSED static const uint32_t round_constants[10] = |
| { |
| 0x00000001, 0x00000002, 0x00000004, 0x00000008, |
| 0x00000010, 0x00000020, 0x00000040, 0x00000080, |
| 0x0000001B, 0x00000036 |
| }; |
| |
| #else /* MBEDTLS_AES_ROM_TABLES */ |
| |
| /* |
| * Forward S-box & tables |
| */ |
| MBEDTLS_MAYBE_UNUSED static unsigned char FSb[256]; |
| MBEDTLS_MAYBE_UNUSED static uint32_t FT0[256]; |
| MBEDTLS_MAYBE_UNUSED static uint32_t FT1[256]; |
| MBEDTLS_MAYBE_UNUSED static uint32_t FT2[256]; |
| MBEDTLS_MAYBE_UNUSED static uint32_t FT3[256]; |
| |
| /* |
| * Reverse S-box & tables |
| */ |
| MBEDTLS_MAYBE_UNUSED static unsigned char RSb[256]; |
| |
| MBEDTLS_MAYBE_UNUSED static uint32_t RT0[256]; |
| MBEDTLS_MAYBE_UNUSED static uint32_t RT1[256]; |
| MBEDTLS_MAYBE_UNUSED static uint32_t RT2[256]; |
| MBEDTLS_MAYBE_UNUSED static uint32_t RT3[256]; |
| |
| /* |
| * Round constants |
| */ |
| MBEDTLS_MAYBE_UNUSED static uint32_t round_constants[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) |
| |
| MBEDTLS_MAYBE_UNUSED static int aes_init_done = 0; |
| |
| MBEDTLS_MAYBE_UNUSED static void aes_gen_tables(void) |
| { |
| int i; |
| uint8_t x, y, z; |
| uint8_t pow[256]; |
| uint8_t log[256]; |
| |
| /* |
| * compute pow and log tables over GF(2^8) |
| */ |
| for (i = 0, x = 1; i < 256; i++) { |
| pow[i] = x; |
| log[x] = (uint8_t) i; |
| x ^= XTIME(x); |
| } |
| |
| /* |
| * calculate the round constants |
| */ |
| for (i = 0, x = 1; i < 10; i++) { |
| round_constants[i] = x; |
| x = XTIME(x); |
| } |
| |
| /* |
| * generate the forward and reverse S-boxes |
| */ |
| FSb[0x00] = 0x63; |
| #if defined(MBEDTLS_AES_NEED_REVERSE_TABLES) |
| RSb[0x63] = 0x00; |
| #endif |
| |
| for (i = 1; i < 256; i++) { |
| x = pow[255 - log[i]]; |
| |
| y = x; y = (y << 1) | (y >> 7); |
| x ^= y; y = (y << 1) | (y >> 7); |
| x ^= y; y = (y << 1) | (y >> 7); |
| x ^= y; y = (y << 1) | (y >> 7); |
| x ^= y ^ 0x63; |
| |
| FSb[i] = x; |
| #if defined(MBEDTLS_AES_NEED_REVERSE_TABLES) |
| RSb[x] = (unsigned char) i; |
| #endif |
| } |
| |
| /* |
| * generate the forward and reverse tables |
| */ |
| for (i = 0; i < 256; i++) { |
| x = FSb[i]; |
| y = XTIME(x); |
| z = 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 */ |
| |
| #if defined(MBEDTLS_AES_NEED_REVERSE_TABLES) |
| x = RSb[i]; |
| |
| 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 /* MBEDTLS_AES_NEED_REVERSE_TABLES */ |
| } |
| } |
| |
| #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) |
| { |
| 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) |
| { |
| 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_VIA_PADLOCK_HAVE_CODE)) || \ |
| (defined(MBEDTLS_AESNI_C) && MBEDTLS_AESNI_HAVE_CODE == 2) |
| #define MAY_NEED_TO_ALIGN |
| #endif |
| |
| MBEDTLS_MAYBE_UNUSED static unsigned mbedtls_aes_rk_offset(uint32_t *buf) |
| { |
| #if defined(MAY_NEED_TO_ALIGN) |
| int align_16_bytes = 0; |
| |
| #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE) |
| 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; |
| } |
| |
| /* |
| * 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) |
| { |
| uint32_t *RK; |
| |
| switch (keybits) { |
| case 128: ctx->nr = 10; break; |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| case 192: ctx->nr = 12; break; |
| case 256: ctx->nr = 14; break; |
| #endif /* !MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH */ |
| 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_offset = mbedtls_aes_rk_offset(ctx->buf); |
| RK = ctx->buf + ctx->rk_offset; |
| |
| #if defined(MBEDTLS_AESNI_HAVE_CODE) |
| if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) { |
| return mbedtls_aesni_setkey_enc((unsigned char *) RK, key, keybits); |
| } |
| #endif |
| |
| #if defined(MBEDTLS_AESCE_HAVE_CODE) |
| if (MBEDTLS_AESCE_HAS_SUPPORT()) { |
| return mbedtls_aesce_setkey_enc((unsigned char *) RK, key, keybits); |
| } |
| #endif |
| |
| #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY) |
| for (unsigned int i = 0; i < (keybits >> 5); i++) { |
| RK[i] = MBEDTLS_GET_UINT32_LE(key, i << 2); |
| } |
| |
| switch (ctx->nr) { |
| case 10: |
| |
| for (unsigned int i = 0; i < 10; i++, RK += 4) { |
| RK[4] = RK[0] ^ round_constants[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; |
| |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| case 12: |
| |
| for (unsigned int i = 0; i < 8; i++, RK += 6) { |
| RK[6] = RK[0] ^ round_constants[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 (unsigned int i = 0; i < 7; i++, RK += 8) { |
| RK[8] = RK[0] ^ round_constants[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; |
| #endif /* !MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH */ |
| } |
| |
| return 0; |
| #endif /* !MBEDTLS_AES_USE_HARDWARE_ONLY */ |
| } |
| #endif /* !MBEDTLS_AES_SETKEY_ENC_ALT */ |
| |
| /* |
| * AES key schedule (decryption) |
| */ |
| #if !defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT) |
| int mbedtls_aes_setkey_dec(mbedtls_aes_context *ctx, const unsigned char *key, |
| unsigned int keybits) |
| { |
| #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY) |
| uint32_t *SK; |
| #endif |
| int ret; |
| mbedtls_aes_context cty; |
| uint32_t *RK; |
| |
| |
| mbedtls_aes_init(&cty); |
| |
| ctx->rk_offset = mbedtls_aes_rk_offset(ctx->buf); |
| RK = ctx->buf + ctx->rk_offset; |
| |
| /* 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 *) RK, |
| (const unsigned char *) (cty.buf + cty.rk_offset), ctx->nr); |
| goto exit; |
| } |
| #endif |
| |
| #if defined(MBEDTLS_AESCE_HAVE_CODE) |
| if (MBEDTLS_AESCE_HAS_SUPPORT()) { |
| mbedtls_aesce_inverse_key( |
| (unsigned char *) RK, |
| (const unsigned char *) (cty.buf + cty.rk_offset), |
| ctx->nr); |
| goto exit; |
| } |
| #endif |
| |
| #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY) |
| SK = cty.buf + cty.rk_offset + cty.nr * 4; |
| |
| *RK++ = *SK++; |
| *RK++ = *SK++; |
| *RK++ = *SK++; |
| *RK++ = *SK++; |
| SK -= 8; |
| for (int i = ctx->nr - 1; i > 0; i--, SK -= 8) { |
| for (int 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++; |
| #endif /* !MBEDTLS_AES_USE_HARDWARE_ONLY */ |
| exit: |
| mbedtls_aes_free(&cty); |
| |
| return ret; |
| } |
| #endif /* !MBEDTLS_AES_SETKEY_DEC_ALT && !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */ |
| |
| #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; |
| |
| 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; |
| |
| 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->buf + ctx->rk_offset; |
| 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 */ |
| |
| /* |
| * AES-ECB block decryption |
| */ |
| #if !defined(MBEDTLS_AES_DECRYPT_ALT) && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT) |
| int mbedtls_internal_aes_decrypt(mbedtls_aes_context *ctx, |
| const unsigned char input[16], |
| unsigned char output[16]) |
| { |
| int i; |
| uint32_t *RK = ctx->buf + ctx->rk_offset; |
| 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 && !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */ |
| |
| /* 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. |
| */ |
| MBEDTLS_MAYBE_UNUSED static void aes_maybe_realign(mbedtls_aes_context *ctx) |
| { |
| unsigned new_offset = mbedtls_aes_rk_offset(ctx->buf); |
| if (new_offset != ctx->rk_offset) { |
| memmove(ctx->buf + new_offset, // new address |
| ctx->buf + ctx->rk_offset, // current address |
| (ctx->nr + 1) * 16); // number of round keys * bytes per rk |
| ctx->rk_offset = new_offset; |
| } |
| } |
| |
| /* |
| * 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]) |
| { |
| if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) { |
| return MBEDTLS_ERR_AES_BAD_INPUT_DATA; |
| } |
| |
| #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_AESCE_HAVE_CODE) |
| if (MBEDTLS_AESCE_HAS_SUPPORT()) { |
| return mbedtls_aesce_crypt_ecb(ctx, mode, input, output); |
| } |
| #endif |
| |
| #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE) |
| if (aes_padlock_ace > 0) { |
| return mbedtls_padlock_xcryptecb(ctx, mode, input, output); |
| } |
| #endif |
| |
| #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY) |
| #if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT) |
| if (mode == MBEDTLS_AES_DECRYPT) { |
| return mbedtls_internal_aes_decrypt(ctx, input, output); |
| } else |
| #endif |
| { |
| return mbedtls_internal_aes_encrypt(ctx, input, output); |
| } |
| #endif /* !MBEDTLS_AES_USE_HARDWARE_ONLY */ |
| } |
| |
| #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 ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
| unsigned char temp[16]; |
| |
| if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) { |
| return MBEDTLS_ERR_AES_BAD_INPUT_DATA; |
| } |
| |
| /* Nothing to do if length is zero. */ |
| if (length == 0) { |
| return 0; |
| } |
| |
| if (length % 16) { |
| return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH; |
| } |
| |
| #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE) |
| if (aes_padlock_ace > 0) { |
| 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 |
| |
| const unsigned char *ivp = iv; |
| |
| 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; |
| } |
| /* Avoid using the NEON implementation of mbedtls_xor. Because of the dependency on |
| * the result for the next block in CBC, and the cost of transferring that data from |
| * NEON registers, NEON is slower on aarch64. */ |
| mbedtls_xor_no_simd(output, output, iv, 16); |
| |
| memcpy(iv, temp, 16); |
| |
| input += 16; |
| output += 16; |
| length -= 16; |
| } |
| } else { |
| while (length > 0) { |
| mbedtls_xor_no_simd(output, input, ivp, 16); |
| |
| ret = mbedtls_aes_crypt_ecb(ctx, mode, output, output); |
| if (ret != 0) { |
| goto exit; |
| } |
| ivp = output; |
| |
| input += 16; |
| output += 16; |
| length -= 16; |
| } |
| memcpy(iv, ivp, 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. |
| */ |
| #if defined(MBEDTLS_AESCE_C) || defined(MBEDTLS_AESNI_C) |
| MBEDTLS_OPTIMIZE_FOR_PERFORMANCE |
| #endif |
| static inline 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 |
| * |
| * Use of MBEDTLS_OPTIMIZE_FOR_PERFORMANCE here and for mbedtls_gf128mul_x_ble() |
| * is a 3x performance improvement for gcc -Os, if we have hardware AES support. |
| */ |
| #if defined(MBEDTLS_AESCE_C) || defined(MBEDTLS_AESNI_C) |
| MBEDTLS_OPTIMIZE_FOR_PERFORMANCE |
| #endif |
| 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]; |
| |
| if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) { |
| return MBEDTLS_ERR_AES_BAD_INPUT_DATA; |
| } |
| |
| /* 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--) { |
| if (MBEDTLS_UNLIKELY(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); |
| } |
| |
| mbedtls_xor(tmp, input, tweak, 16); |
| |
| ret = mbedtls_aes_crypt_ecb(&ctx->crypt, mode, tmp, tmp); |
| if (ret != 0) { |
| return ret; |
| } |
| |
| mbedtls_xor(output, tmp, tweak, 16); |
| |
| /* 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. */ |
| for (i = 0; i < leftover; i++) { |
| output[i] = prev_output[i]; |
| } |
| |
| /* Copy the remainder of the input for this final round. */ |
| mbedtls_xor(tmp, input, t, leftover); |
| |
| /* Copy ciphertext bytes from the previous block for input in this |
| * round. */ |
| mbedtls_xor(tmp + i, prev_output + i, t + i, 16 - 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. */ |
| mbedtls_xor(prev_output, tmp, t, 16); |
| } |
| |
| 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; |
| |
| if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) { |
| return MBEDTLS_ERR_AES_BAD_INPUT_DATA; |
| } |
| |
| 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]; |
| |
| if (mode != MBEDTLS_AES_ENCRYPT && mode != MBEDTLS_AES_DECRYPT) { |
| return MBEDTLS_ERR_AES_BAD_INPUT_DATA; |
| } |
| 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; |
| |
| 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 ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
| |
| size_t offset = *nc_off; |
| |
| if (offset > 0x0F) { |
| return MBEDTLS_ERR_AES_BAD_INPUT_DATA; |
| } |
| |
| for (size_t i = 0; i < length;) { |
| size_t n = 16; |
| if (offset == 0) { |
| ret = mbedtls_aes_crypt_ecb(ctx, MBEDTLS_AES_ENCRYPT, nonce_counter, stream_block); |
| if (ret != 0) { |
| goto exit; |
| } |
| mbedtls_ctr_increment_counter(nonce_counter); |
| } else { |
| n -= offset; |
| } |
| |
| if (n > (length - i)) { |
| n = (length - i); |
| } |
| mbedtls_xor(&output[i], &input[i], &stream_block[offset], n); |
| // offset might be non-zero for the last block, but in that case, we don't use it again |
| offset = 0; |
| i += n; |
| } |
| |
| // capture offset for future resumption |
| *nc_off = (*nc_off + length) % 16; |
| |
| 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 |
| */ |
| #if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT) |
| static const unsigned char aes_test_ecb_dec[][16] = |
| { |
| { 0x44, 0x41, 0x6A, 0xC2, 0xD1, 0xF5, 0x3C, 0x58, |
| 0x33, 0x03, 0x91, 0x7E, 0x6B, 0xE9, 0xEB, 0xE0 }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 } |
| #endif |
| }; |
| #endif |
| |
| static const unsigned char aes_test_ecb_enc[][16] = |
| { |
| { 0xC3, 0x4C, 0x05, 0x2C, 0xC0, 0xDA, 0x8D, 0x73, |
| 0x45, 0x1A, 0xFE, 0x5F, 0x03, 0xBE, 0x29, 0x7F }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 } |
| #endif |
| }; |
| |
| #if defined(MBEDTLS_CIPHER_MODE_CBC) |
| static const unsigned char aes_test_cbc_dec[][16] = |
| { |
| { 0xFA, 0xCA, 0x37, 0xE0, 0xB0, 0xC8, 0x53, 0x73, |
| 0xDF, 0x70, 0x6E, 0x73, 0xF7, 0xC9, 0xAF, 0x86 }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 } |
| #endif |
| }; |
| |
| static const unsigned char aes_test_cbc_enc[][16] = |
| { |
| { 0x8A, 0x05, 0xFC, 0x5E, 0x09, 0x5A, 0xF4, 0x84, |
| 0x8A, 0x08, 0xD3, 0x28, 0xD3, 0x68, 0x8E, 0x3D }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 |
| }; |
| #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[][32] = |
| { |
| { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, |
| 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 } |
| #endif |
| }; |
| |
| 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[][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 }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 |
| }; |
| #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[][32] = |
| { |
| { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, |
| 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 } |
| #endif |
| }; |
| |
| 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[][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 }, |
| #if !defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) |
| { 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 |
| }; |
| #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[][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[][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[][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[][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_AESNI_HAVE_CODE) |
| #if MBEDTLS_AESNI_HAVE_CODE == 1 |
| mbedtls_printf(" AES note: AESNI code present (assembly implementation).\n"); |
| #elif MBEDTLS_AESNI_HAVE_CODE == 2 |
| mbedtls_printf(" AES note: AESNI code present (intrinsics implementation).\n"); |
| #else |
| #error "Unrecognised value for MBEDTLS_AESNI_HAVE_CODE" |
| #endif |
| if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) { |
| mbedtls_printf(" AES note: using AESNI.\n"); |
| } else |
| #endif |
| #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE) |
| if (mbedtls_padlock_has_support(MBEDTLS_PADLOCK_ACE)) { |
| mbedtls_printf(" AES note: using VIA Padlock.\n"); |
| } else |
| #endif |
| #if defined(MBEDTLS_AESCE_HAVE_CODE) |
| if (MBEDTLS_AESCE_HAS_SUPPORT()) { |
| mbedtls_printf(" AES note: using AESCE.\n"); |
| } else |
| #endif |
| { |
| #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY) |
| mbedtls_printf(" AES note: built-in implementation.\n"); |
| #endif |
| } |
| #endif /* MBEDTLS_AES_ALT */ |
| } |
| |
| /* |
| * ECB mode |
| */ |
| { |
| static const int num_tests = |
| sizeof(aes_test_ecb_enc) / sizeof(*aes_test_ecb_enc); |
| |
| for (i = 0; i < num_tests << 1; 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"); |
| } |
| #if defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT) |
| if (mode == MBEDTLS_AES_DECRYPT) { |
| if (verbose != 0) { |
| mbedtls_printf("skipped\n"); |
| } |
| continue; |
| } |
| #endif |
| |
| memset(buf, 0, 16); |
| |
| #if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT) |
| if (mode == MBEDTLS_AES_DECRYPT) { |
| ret = mbedtls_aes_setkey_dec(&ctx, key, keybits); |
| aes_tests = aes_test_ecb_dec[u]; |
| } else |
| #endif |
| { |
| 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 |
| */ |
| { |
| static const int num_tests = |
| sizeof(aes_test_cbc_dec) / sizeof(*aes_test_cbc_dec); |
| |
| for (i = 0; i < num_tests << 1; 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 |
| */ |
| { |
| static const int num_tests = |
| sizeof(aes_test_cfb128_key) / sizeof(*aes_test_cfb128_key); |
| |
| for (i = 0; i < num_tests << 1; 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 |
| */ |
| { |
| static const int num_tests = |
| sizeof(aes_test_ofb_key) / sizeof(*aes_test_ofb_key); |
| |
| for (i = 0; i < num_tests << 1; 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 |
| */ |
| { |
| static const int num_tests = |
| sizeof(aes_test_ctr_key) / sizeof(*aes_test_ctr_key); |
| |
| for (i = 0; i < num_tests << 1; 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) |
| /* |
| * XTS mode |
| */ |
| { |
| static const int num_tests = |
| sizeof(aes_test_xts_key) / sizeof(*aes_test_xts_key); |
| mbedtls_aes_xts_context ctx_xts; |
| |
| 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 */ |
