mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-10-18 16:21:05 +00:00
f18de50b49
This issue has been reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai, Grant Hernandez, and Kevin Butler (University of Florida) and Dave Tian (Purdue University). In AES encrypt and decrypt some variables were left on the stack. The value of these variables can be used to recover the last round key. To follow best practice and to limit the impact of buffer overread vulnerabilities (like Heartbleed) we need to zeroize them before exiting the function.
2234 lines
72 KiB
C
2234 lines
72 KiB
C
/*
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* FIPS-197 compliant AES implementation
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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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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* This file is part of mbed TLS (https://tls.mbed.org)
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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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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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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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#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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#if defined(MBEDTLS_SELF_TEST)
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#define mbedtls_printf printf
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#endif /* MBEDTLS_PLATFORM_C */
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#endif /* MBEDTLS_SELF_TEST */
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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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/*
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* 32-bit integer manipulation macros (little endian)
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*/
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#ifndef GET_UINT32_LE
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#define GET_UINT32_LE(n,b,i) \
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{ \
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(n) = ( (uint32_t) (b)[(i) ] ) \
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| ( (uint32_t) (b)[(i) + 1] << 8 ) \
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| ( (uint32_t) (b)[(i) + 2] << 16 ) \
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| ( (uint32_t) (b)[(i) + 3] << 24 ); \
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}
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#endif
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#ifndef PUT_UINT32_LE
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#define PUT_UINT32_LE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \
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(b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \
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(b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \
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(b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \
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}
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#endif
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#if defined(MBEDTLS_PADLOCK_C) && \
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( defined(MBEDTLS_HAVE_X86) || defined(MBEDTLS_PADLOCK_ALIGN16) )
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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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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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/*
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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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#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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#undef FT
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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,
|
|
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
|
|
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 */
|
|
|
|
#undef RT
|
|
|
|
/*
|
|
* Round constants
|
|
*/
|
|
static const uint32_t RCON[10] =
|
|
{
|
|
0x00000001, 0x00000002, 0x00000004, 0x00000008,
|
|
0x00000010, 0x00000020, 0x00000040, 0x00000080,
|
|
0x0000001B, 0x00000036
|
|
};
|
|
|
|
#else /* MBEDTLS_AES_ROM_TABLES */
|
|
|
|
/*
|
|
* Forward S-box & tables
|
|
*/
|
|
static unsigned char FSb[256];
|
|
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 */
|
|
|
|
/*
|
|
* Reverse S-box & tables
|
|
*/
|
|
static unsigned char RSb[256];
|
|
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 */
|
|
|
|
/*
|
|
* 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 = ( x ^ XTIME( x ) ) & 0xFF;
|
|
}
|
|
|
|
/*
|
|
* calculate the round constants
|
|
*/
|
|
for( i = 0, x = 1; i < 10; i++ )
|
|
{
|
|
RCON[i] = (uint32_t) x;
|
|
x = XTIME( x ) & 0xFF;
|
|
}
|
|
|
|
/*
|
|
* 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 = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
|
|
x ^= y; y = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
|
|
x ^= y; y = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
|
|
x ^= y; y = ( ( y << 1 ) | ( y >> 7 ) ) & 0xFF;
|
|
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 = XTIME( x ) & 0xFF;
|
|
z = ( y ^ x ) & 0xFF;
|
|
|
|
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];
|
|
|
|
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 */
|
|
}
|
|
}
|
|
|
|
#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 */
|
|
|
|
/*
|
|
* 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
|
|
|
|
#if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16)
|
|
if( aes_padlock_ace == -1 )
|
|
aes_padlock_ace = mbedtls_padlock_has_support( MBEDTLS_PADLOCK_ACE );
|
|
|
|
if( aes_padlock_ace )
|
|
ctx->rk = RK = MBEDTLS_PADLOCK_ALIGN16( ctx->buf );
|
|
else
|
|
#endif
|
|
ctx->rk = RK = ctx->buf;
|
|
|
|
#if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
|
|
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++ )
|
|
{
|
|
GET_UINT32_LE( RK[i], 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[ ( RK[3] >> 8 ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( RK[3] >> 16 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( RK[3] >> 24 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( RK[3] ) & 0xFF ] << 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[ ( RK[5] >> 8 ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( RK[5] >> 16 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( RK[5] >> 24 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( RK[5] ) & 0xFF ] << 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[ ( RK[7] >> 8 ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( RK[7] >> 16 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( RK[7] >> 24 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( RK[7] ) & 0xFF ] << 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[ ( RK[11] ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( RK[11] >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( RK[11] >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( RK[11] >> 24 ) & 0xFF ] << 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 );
|
|
|
|
#if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16)
|
|
if( aes_padlock_ace == -1 )
|
|
aes_padlock_ace = mbedtls_padlock_has_support( MBEDTLS_PADLOCK_ACE );
|
|
|
|
if( aes_padlock_ace )
|
|
ctx->rk = RK = MBEDTLS_PADLOCK_ALIGN16( ctx->buf );
|
|
else
|
|
#endif
|
|
ctx->rk = RK = 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_C) && defined(MBEDTLS_HAVE_X86_64)
|
|
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[ ( *SK ) & 0xFF ] ) ^
|
|
AES_RT1( FSb[ ( *SK >> 8 ) & 0xFF ] ) ^
|
|
AES_RT2( FSb[ ( *SK >> 16 ) & 0xFF ] ) ^
|
|
AES_RT3( FSb[ ( *SK >> 24 ) & 0xFF ] );
|
|
}
|
|
}
|
|
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
*RK++ = *SK++;
|
|
|
|
exit:
|
|
mbedtls_aes_free( &cty );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
#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;
|
|
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;
|
|
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 */
|
|
|
|
#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT */
|
|
|
|
#define AES_FROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
|
|
do \
|
|
{ \
|
|
(X0) = *RK++ ^ AES_FT0( ( (Y0) ) & 0xFF ) ^ \
|
|
AES_FT1( ( (Y1) >> 8 ) & 0xFF ) ^ \
|
|
AES_FT2( ( (Y2) >> 16 ) & 0xFF ) ^ \
|
|
AES_FT3( ( (Y3) >> 24 ) & 0xFF ); \
|
|
\
|
|
(X1) = *RK++ ^ AES_FT0( ( (Y1) ) & 0xFF ) ^ \
|
|
AES_FT1( ( (Y2) >> 8 ) & 0xFF ) ^ \
|
|
AES_FT2( ( (Y3) >> 16 ) & 0xFF ) ^ \
|
|
AES_FT3( ( (Y0) >> 24 ) & 0xFF ); \
|
|
\
|
|
(X2) = *RK++ ^ AES_FT0( ( (Y2) ) & 0xFF ) ^ \
|
|
AES_FT1( ( (Y3) >> 8 ) & 0xFF ) ^ \
|
|
AES_FT2( ( (Y0) >> 16 ) & 0xFF ) ^ \
|
|
AES_FT3( ( (Y1) >> 24 ) & 0xFF ); \
|
|
\
|
|
(X3) = *RK++ ^ AES_FT0( ( (Y3) ) & 0xFF ) ^ \
|
|
AES_FT1( ( (Y0) >> 8 ) & 0xFF ) ^ \
|
|
AES_FT2( ( (Y1) >> 16 ) & 0xFF ) ^ \
|
|
AES_FT3( ( (Y2) >> 24 ) & 0xFF ); \
|
|
} while( 0 )
|
|
|
|
#define AES_RROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
|
|
do \
|
|
{ \
|
|
(X0) = *RK++ ^ AES_RT0( ( (Y0) ) & 0xFF ) ^ \
|
|
AES_RT1( ( (Y3) >> 8 ) & 0xFF ) ^ \
|
|
AES_RT2( ( (Y2) >> 16 ) & 0xFF ) ^ \
|
|
AES_RT3( ( (Y1) >> 24 ) & 0xFF ); \
|
|
\
|
|
(X1) = *RK++ ^ AES_RT0( ( (Y1) ) & 0xFF ) ^ \
|
|
AES_RT1( ( (Y0) >> 8 ) & 0xFF ) ^ \
|
|
AES_RT2( ( (Y3) >> 16 ) & 0xFF ) ^ \
|
|
AES_RT3( ( (Y2) >> 24 ) & 0xFF ); \
|
|
\
|
|
(X2) = *RK++ ^ AES_RT0( ( (Y2) ) & 0xFF ) ^ \
|
|
AES_RT1( ( (Y1) >> 8 ) & 0xFF ) ^ \
|
|
AES_RT2( ( (Y0) >> 16 ) & 0xFF ) ^ \
|
|
AES_RT3( ( (Y3) >> 24 ) & 0xFF ); \
|
|
\
|
|
(X3) = *RK++ ^ AES_RT0( ( (Y3) ) & 0xFF ) ^ \
|
|
AES_RT1( ( (Y2) >> 8 ) & 0xFF ) ^ \
|
|
AES_RT2( ( (Y1) >> 16 ) & 0xFF ) ^ \
|
|
AES_RT3( ( (Y0) >> 24 ) & 0xFF ); \
|
|
} 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, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
|
|
|
|
RK = ctx->rk;
|
|
|
|
GET_UINT32_LE( X0, input, 0 ); X0 ^= *RK++;
|
|
GET_UINT32_LE( X1, input, 4 ); X1 ^= *RK++;
|
|
GET_UINT32_LE( X2, input, 8 ); X2 ^= *RK++;
|
|
GET_UINT32_LE( X3, input, 12 ); X3 ^= *RK++;
|
|
|
|
for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
|
|
{
|
|
AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
|
|
AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 );
|
|
}
|
|
|
|
AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
|
|
|
|
X0 = *RK++ ^ \
|
|
( (uint32_t) FSb[ ( Y0 ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( Y1 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( Y3 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
X1 = *RK++ ^ \
|
|
( (uint32_t) FSb[ ( Y1 ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( Y2 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( Y0 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
X2 = *RK++ ^ \
|
|
( (uint32_t) FSb[ ( Y2 ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( Y3 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( Y1 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
X3 = *RK++ ^ \
|
|
( (uint32_t) FSb[ ( Y3 ) & 0xFF ] ) ^
|
|
( (uint32_t) FSb[ ( Y0 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) FSb[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) FSb[ ( Y2 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
PUT_UINT32_LE( X0, output, 0 );
|
|
PUT_UINT32_LE( X1, output, 4 );
|
|
PUT_UINT32_LE( X2, output, 8 );
|
|
PUT_UINT32_LE( X3, output, 12 );
|
|
|
|
mbedtls_platform_zeroize( &X0, sizeof( X0 ) );
|
|
mbedtls_platform_zeroize( &X1, sizeof( X1 ) );
|
|
mbedtls_platform_zeroize( &X2, sizeof( X2 ) );
|
|
mbedtls_platform_zeroize( &X3, sizeof( X3 ) );
|
|
|
|
mbedtls_platform_zeroize( &Y0, sizeof( Y0 ) );
|
|
mbedtls_platform_zeroize( &Y1, sizeof( Y1 ) );
|
|
mbedtls_platform_zeroize( &Y2, sizeof( Y2 ) );
|
|
mbedtls_platform_zeroize( &Y3, sizeof( Y3 ) );
|
|
|
|
mbedtls_platform_zeroize( &RK, sizeof( RK ) );
|
|
|
|
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_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, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
|
|
|
|
RK = ctx->rk;
|
|
|
|
GET_UINT32_LE( X0, input, 0 ); X0 ^= *RK++;
|
|
GET_UINT32_LE( X1, input, 4 ); X1 ^= *RK++;
|
|
GET_UINT32_LE( X2, input, 8 ); X2 ^= *RK++;
|
|
GET_UINT32_LE( X3, input, 12 ); X3 ^= *RK++;
|
|
|
|
for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
|
|
{
|
|
AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
|
|
AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 );
|
|
}
|
|
|
|
AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
|
|
|
|
X0 = *RK++ ^ \
|
|
( (uint32_t) RSb[ ( Y0 ) & 0xFF ] ) ^
|
|
( (uint32_t) RSb[ ( Y3 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) RSb[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) RSb[ ( Y1 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
X1 = *RK++ ^ \
|
|
( (uint32_t) RSb[ ( Y1 ) & 0xFF ] ) ^
|
|
( (uint32_t) RSb[ ( Y0 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) RSb[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) RSb[ ( Y2 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
X2 = *RK++ ^ \
|
|
( (uint32_t) RSb[ ( Y2 ) & 0xFF ] ) ^
|
|
( (uint32_t) RSb[ ( Y1 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) RSb[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) RSb[ ( Y3 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
X3 = *RK++ ^ \
|
|
( (uint32_t) RSb[ ( Y3 ) & 0xFF ] ) ^
|
|
( (uint32_t) RSb[ ( Y2 >> 8 ) & 0xFF ] << 8 ) ^
|
|
( (uint32_t) RSb[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
|
|
( (uint32_t) RSb[ ( Y0 >> 24 ) & 0xFF ] << 24 );
|
|
|
|
PUT_UINT32_LE( X0, output, 0 );
|
|
PUT_UINT32_LE( X1, output, 4 );
|
|
PUT_UINT32_LE( X2, output, 8 );
|
|
PUT_UINT32_LE( X3, output, 12 );
|
|
|
|
mbedtls_platform_zeroize( &X0, sizeof( X0 ) );
|
|
mbedtls_platform_zeroize( &X1, sizeof( X1 ) );
|
|
mbedtls_platform_zeroize( &X2, sizeof( X2 ) );
|
|
mbedtls_platform_zeroize( &X3, sizeof( X3 ) );
|
|
|
|
mbedtls_platform_zeroize( &Y0, sizeof( Y0 ) );
|
|
mbedtls_platform_zeroize( &Y1, sizeof( Y1 ) );
|
|
mbedtls_platform_zeroize( &Y2, sizeof( Y2 ) );
|
|
mbedtls_platform_zeroize( &Y3, sizeof( Y3 ) );
|
|
|
|
mbedtls_platform_zeroize( &RK, sizeof( RK ) );
|
|
|
|
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_internal_aes_decrypt( ctx, input, output );
|
|
}
|
|
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
|
|
|
|
/*
|
|
* 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(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
|
|
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 )
|
|
{
|
|
if( mbedtls_padlock_xcryptecb( ctx, mode, input, output ) == 0 )
|
|
return( 0 );
|
|
|
|
// If padlock data misaligned, we just fall back to
|
|
// unaccelerated mode
|
|
//
|
|
}
|
|
#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;
|
|
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 );
|
|
mbedtls_aes_crypt_ecb( ctx, mode, input, output );
|
|
|
|
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] );
|
|
|
|
mbedtls_aes_crypt_ecb( ctx, mode, output, output );
|
|
memcpy( iv, output, 16 );
|
|
|
|
input += 16;
|
|
output += 16;
|
|
length -= 16;
|
|
}
|
|
}
|
|
|
|
return( 0 );
|
|
}
|
|
#endif /* MBEDTLS_CIPHER_MODE_CBC */
|
|
|
|
#if defined(MBEDTLS_CIPHER_MODE_XTS)
|
|
|
|
/* Endianess with 64 bits values */
|
|
#ifndef GET_UINT64_LE
|
|
#define GET_UINT64_LE(n,b,i) \
|
|
{ \
|
|
(n) = ( (uint64_t) (b)[(i) + 7] << 56 ) \
|
|
| ( (uint64_t) (b)[(i) + 6] << 48 ) \
|
|
| ( (uint64_t) (b)[(i) + 5] << 40 ) \
|
|
| ( (uint64_t) (b)[(i) + 4] << 32 ) \
|
|
| ( (uint64_t) (b)[(i) + 3] << 24 ) \
|
|
| ( (uint64_t) (b)[(i) + 2] << 16 ) \
|
|
| ( (uint64_t) (b)[(i) + 1] << 8 ) \
|
|
| ( (uint64_t) (b)[(i) ] ); \
|
|
}
|
|
#endif
|
|
|
|
#ifndef PUT_UINT64_LE
|
|
#define PUT_UINT64_LE(n,b,i) \
|
|
{ \
|
|
(b)[(i) + 7] = (unsigned char) ( (n) >> 56 ); \
|
|
(b)[(i) + 6] = (unsigned char) ( (n) >> 48 ); \
|
|
(b)[(i) + 5] = (unsigned char) ( (n) >> 40 ); \
|
|
(b)[(i) + 4] = (unsigned char) ( (n) >> 32 ); \
|
|
(b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \
|
|
(b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \
|
|
(b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \
|
|
(b)[(i) ] = (unsigned char) ( (n) ); \
|
|
}
|
|
#endif
|
|
|
|
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 endianess 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;
|
|
|
|
GET_UINT64_LE( a, x, 0 );
|
|
GET_UINT64_LE( b, x, 8 );
|
|
|
|
ra = ( a << 1 ) ^ 0x0087 >> ( 8 - ( ( b >> 63 ) << 3 ) );
|
|
rb = ( a >> 63 ) | ( b << 1 );
|
|
|
|
PUT_UINT64_LE( ra, r, 0 );
|
|
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;
|
|
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 lefover 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 cyphertext 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;
|
|
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 )
|
|
mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv );
|
|
|
|
c = *input++;
|
|
*output++ = (unsigned char)( c ^ iv[n] );
|
|
iv[n] = (unsigned char) c;
|
|
|
|
n = ( n + 1 ) & 0x0F;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while( length-- )
|
|
{
|
|
if( n == 0 )
|
|
mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv );
|
|
|
|
iv[n] = *output++ = (unsigned char)( iv[n] ^ *input++ );
|
|
|
|
n = ( n + 1 ) & 0x0F;
|
|
}
|
|
}
|
|
|
|
*iv_off = n;
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* 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 )
|
|
{
|
|
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 );
|
|
mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv );
|
|
|
|
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 );
|
|
}
|
|
|
|
return( 0 );
|
|
}
|
|
#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;
|
|
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 ) {
|
|
mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, nonce_counter, stream_block );
|
|
|
|
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;
|
|
|
|
return( 0 );
|
|
}
|
|
#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)
|
|
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 );
|
|
|
|
/*
|
|
* 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-%3d (%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-%3d (%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-%3d (%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-%3d (%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 */
|