diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/library/cmac.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/library/cmac.c | 1087 |
1 files changed, 0 insertions, 1087 deletions
diff --git a/lib/mbedtls-2.27.0/library/cmac.c b/lib/mbedtls-2.27.0/library/cmac.c deleted file mode 100644 index 3cc49d1..0000000 --- a/lib/mbedtls-2.27.0/library/cmac.c +++ /dev/null @@ -1,1087 +0,0 @@ -/** - * \file cmac.c - * - * \brief NIST SP800-38B compliant CMAC implementation for AES and 3DES - * - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may - * not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* - * References: - * - * - NIST SP 800-38B Recommendation for Block Cipher Modes of Operation: The - * CMAC Mode for Authentication - * http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-38b.pdf - * - * - RFC 4493 - The AES-CMAC Algorithm - * https://tools.ietf.org/html/rfc4493 - * - * - RFC 4615 - The Advanced Encryption Standard-Cipher-based Message - * Authentication Code-Pseudo-Random Function-128 (AES-CMAC-PRF-128) - * Algorithm for the Internet Key Exchange Protocol (IKE) - * https://tools.ietf.org/html/rfc4615 - * - * Additional test vectors: ISO/IEC 9797-1 - * - */ - -#include "common.h" - -#if defined(MBEDTLS_CMAC_C) - -#include "mbedtls/cmac.h" -#include "mbedtls/platform_util.h" -#include "mbedtls/error.h" -#include "mbedtls/platform.h" - -#include <string.h> - -#if !defined(MBEDTLS_CMAC_ALT) || defined(MBEDTLS_SELF_TEST) - -/* - * Multiplication by u in the Galois field of GF(2^n) - * - * As explained in NIST SP 800-38B, this can be computed: - * - * If MSB(p) = 0, then p = (p << 1) - * If MSB(p) = 1, then p = (p << 1) ^ R_n - * with R_64 = 0x1B and R_128 = 0x87 - * - * Input and output MUST NOT point to the same buffer - * Block size must be 8 bytes or 16 bytes - the block sizes for DES and AES. - */ -static int cmac_multiply_by_u( unsigned char *output, - const unsigned char *input, - size_t blocksize ) -{ - const unsigned char R_128 = 0x87; - const unsigned char R_64 = 0x1B; - unsigned char R_n, mask; - unsigned char overflow = 0x00; - int i; - - if( blocksize == MBEDTLS_AES_BLOCK_SIZE ) - { - R_n = R_128; - } - else if( blocksize == MBEDTLS_DES3_BLOCK_SIZE ) - { - R_n = R_64; - } - else - { - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - } - - for( i = (int)blocksize - 1; i >= 0; i-- ) - { - output[i] = input[i] << 1 | overflow; - overflow = input[i] >> 7; - } - - /* mask = ( input[0] >> 7 ) ? 0xff : 0x00 - * using bit operations to avoid branches */ - - /* MSVC has a warning about unary minus on unsigned, but this is - * well-defined and precisely what we want to do here */ -#if defined(_MSC_VER) -#pragma warning( push ) -#pragma warning( disable : 4146 ) -#endif - mask = - ( input[0] >> 7 ); -#if defined(_MSC_VER) -#pragma warning( pop ) -#endif - - output[ blocksize - 1 ] ^= R_n & mask; - - return( 0 ); -} - -/* - * Generate subkeys - * - * - as specified by RFC 4493, section 2.3 Subkey Generation Algorithm - */ -static int cmac_generate_subkeys( mbedtls_cipher_context_t *ctx, - unsigned char* K1, unsigned char* K2 ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char L[MBEDTLS_CIPHER_BLKSIZE_MAX]; - size_t olen, block_size; - - mbedtls_platform_zeroize( L, sizeof( L ) ); - - block_size = ctx->cipher_info->block_size; - - /* Calculate Ek(0) */ - if( ( ret = mbedtls_cipher_update( ctx, L, block_size, L, &olen ) ) != 0 ) - goto exit; - - /* - * Generate K1 and K2 - */ - if( ( ret = cmac_multiply_by_u( K1, L , block_size ) ) != 0 ) - goto exit; - - if( ( ret = cmac_multiply_by_u( K2, K1 , block_size ) ) != 0 ) - goto exit; - -exit: - mbedtls_platform_zeroize( L, sizeof( L ) ); - - return( ret ); -} -#endif /* !defined(MBEDTLS_CMAC_ALT) || defined(MBEDTLS_SELF_TEST) */ - -#if !defined(MBEDTLS_CMAC_ALT) -static void cmac_xor_block( unsigned char *output, const unsigned char *input1, - const unsigned char *input2, - const size_t block_size ) -{ - size_t idx; - - for( idx = 0; idx < block_size; idx++ ) - output[ idx ] = input1[ idx ] ^ input2[ idx ]; -} - -/* - * Create padded last block from (partial) last block. - * - * We can't use the padding option from the cipher layer, as it only works for - * CBC and we use ECB mode, and anyway we need to XOR K1 or K2 in addition. - */ -static void cmac_pad( unsigned char padded_block[MBEDTLS_CIPHER_BLKSIZE_MAX], - size_t padded_block_len, - const unsigned char *last_block, - size_t last_block_len ) -{ - size_t j; - - for( j = 0; j < padded_block_len; j++ ) - { - if( j < last_block_len ) - padded_block[j] = last_block[j]; - else if( j == last_block_len ) - padded_block[j] = 0x80; - else - padded_block[j] = 0x00; - } -} - -int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx, - const unsigned char *key, size_t keybits ) -{ - mbedtls_cipher_type_t type; - mbedtls_cmac_context_t *cmac_ctx; - int retval; - - if( ctx == NULL || ctx->cipher_info == NULL || key == NULL ) - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - - if( ( retval = mbedtls_cipher_setkey( ctx, key, (int)keybits, - MBEDTLS_ENCRYPT ) ) != 0 ) - return( retval ); - - type = ctx->cipher_info->type; - - switch( type ) - { - case MBEDTLS_CIPHER_AES_128_ECB: - case MBEDTLS_CIPHER_AES_192_ECB: - case MBEDTLS_CIPHER_AES_256_ECB: - case MBEDTLS_CIPHER_DES_EDE3_ECB: - break; - default: - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - } - - /* Allocated and initialise in the cipher context memory for the CMAC - * context */ - cmac_ctx = mbedtls_calloc( 1, sizeof( mbedtls_cmac_context_t ) ); - if( cmac_ctx == NULL ) - return( MBEDTLS_ERR_CIPHER_ALLOC_FAILED ); - - ctx->cmac_ctx = cmac_ctx; - - mbedtls_platform_zeroize( cmac_ctx->state, sizeof( cmac_ctx->state ) ); - - return 0; -} - -int mbedtls_cipher_cmac_update( mbedtls_cipher_context_t *ctx, - const unsigned char *input, size_t ilen ) -{ - mbedtls_cmac_context_t* cmac_ctx; - unsigned char *state; - int ret = 0; - size_t n, j, olen, block_size; - - if( ctx == NULL || ctx->cipher_info == NULL || input == NULL || - ctx->cmac_ctx == NULL ) - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - - cmac_ctx = ctx->cmac_ctx; - block_size = ctx->cipher_info->block_size; - state = ctx->cmac_ctx->state; - - /* Is there data still to process from the last call, that's greater in - * size than a block? */ - if( cmac_ctx->unprocessed_len > 0 && - ilen > block_size - cmac_ctx->unprocessed_len ) - { - memcpy( &cmac_ctx->unprocessed_block[cmac_ctx->unprocessed_len], - input, - block_size - cmac_ctx->unprocessed_len ); - - cmac_xor_block( state, cmac_ctx->unprocessed_block, state, block_size ); - - if( ( ret = mbedtls_cipher_update( ctx, state, block_size, state, - &olen ) ) != 0 ) - { - goto exit; - } - - input += block_size - cmac_ctx->unprocessed_len; - ilen -= block_size - cmac_ctx->unprocessed_len; - cmac_ctx->unprocessed_len = 0; - } - - /* n is the number of blocks including any final partial block */ - n = ( ilen + block_size - 1 ) / block_size; - - /* Iterate across the input data in block sized chunks, excluding any - * final partial or complete block */ - for( j = 1; j < n; j++ ) - { - cmac_xor_block( state, input, state, block_size ); - - if( ( ret = mbedtls_cipher_update( ctx, state, block_size, state, - &olen ) ) != 0 ) - goto exit; - - ilen -= block_size; - input += block_size; - } - - /* If there is data left over that wasn't aligned to a block */ - if( ilen > 0 ) - { - memcpy( &cmac_ctx->unprocessed_block[cmac_ctx->unprocessed_len], - input, - ilen ); - cmac_ctx->unprocessed_len += ilen; - } - -exit: - return( ret ); -} - -int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx, - unsigned char *output ) -{ - mbedtls_cmac_context_t* cmac_ctx; - unsigned char *state, *last_block; - unsigned char K1[MBEDTLS_CIPHER_BLKSIZE_MAX]; - unsigned char K2[MBEDTLS_CIPHER_BLKSIZE_MAX]; - unsigned char M_last[MBEDTLS_CIPHER_BLKSIZE_MAX]; - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - size_t olen, block_size; - - if( ctx == NULL || ctx->cipher_info == NULL || ctx->cmac_ctx == NULL || - output == NULL ) - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - - cmac_ctx = ctx->cmac_ctx; - block_size = ctx->cipher_info->block_size; - state = cmac_ctx->state; - - mbedtls_platform_zeroize( K1, sizeof( K1 ) ); - mbedtls_platform_zeroize( K2, sizeof( K2 ) ); - cmac_generate_subkeys( ctx, K1, K2 ); - - last_block = cmac_ctx->unprocessed_block; - - /* Calculate last block */ - if( cmac_ctx->unprocessed_len < block_size ) - { - cmac_pad( M_last, block_size, last_block, cmac_ctx->unprocessed_len ); - cmac_xor_block( M_last, M_last, K2, block_size ); - } - else - { - /* Last block is complete block */ - cmac_xor_block( M_last, last_block, K1, block_size ); - } - - - cmac_xor_block( state, M_last, state, block_size ); - if( ( ret = mbedtls_cipher_update( ctx, state, block_size, state, - &olen ) ) != 0 ) - { - goto exit; - } - - memcpy( output, state, block_size ); - -exit: - /* Wipe the generated keys on the stack, and any other transients to avoid - * side channel leakage */ - mbedtls_platform_zeroize( K1, sizeof( K1 ) ); - mbedtls_platform_zeroize( K2, sizeof( K2 ) ); - - cmac_ctx->unprocessed_len = 0; - mbedtls_platform_zeroize( cmac_ctx->unprocessed_block, - sizeof( cmac_ctx->unprocessed_block ) ); - - mbedtls_platform_zeroize( state, MBEDTLS_CIPHER_BLKSIZE_MAX ); - return( ret ); -} - -int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx ) -{ - mbedtls_cmac_context_t* cmac_ctx; - - if( ctx == NULL || ctx->cipher_info == NULL || ctx->cmac_ctx == NULL ) - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - - cmac_ctx = ctx->cmac_ctx; - - /* Reset the internal state */ - cmac_ctx->unprocessed_len = 0; - mbedtls_platform_zeroize( cmac_ctx->unprocessed_block, - sizeof( cmac_ctx->unprocessed_block ) ); - mbedtls_platform_zeroize( cmac_ctx->state, - sizeof( cmac_ctx->state ) ); - - return( 0 ); -} - -int mbedtls_cipher_cmac( const mbedtls_cipher_info_t *cipher_info, - const unsigned char *key, size_t keylen, - const unsigned char *input, size_t ilen, - unsigned char *output ) -{ - mbedtls_cipher_context_t ctx; - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - - if( cipher_info == NULL || key == NULL || input == NULL || output == NULL ) - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - - mbedtls_cipher_init( &ctx ); - - if( ( ret = mbedtls_cipher_setup( &ctx, cipher_info ) ) != 0 ) - goto exit; - - ret = mbedtls_cipher_cmac_starts( &ctx, key, keylen ); - if( ret != 0 ) - goto exit; - - ret = mbedtls_cipher_cmac_update( &ctx, input, ilen ); - if( ret != 0 ) - goto exit; - - ret = mbedtls_cipher_cmac_finish( &ctx, output ); - -exit: - mbedtls_cipher_free( &ctx ); - - return( ret ); -} - -#if defined(MBEDTLS_AES_C) -/* - * Implementation of AES-CMAC-PRF-128 defined in RFC 4615 - */ -int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_length, - const unsigned char *input, size_t in_len, - unsigned char output[16] ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - const mbedtls_cipher_info_t *cipher_info; - unsigned char zero_key[MBEDTLS_AES_BLOCK_SIZE]; - unsigned char int_key[MBEDTLS_AES_BLOCK_SIZE]; - - if( key == NULL || input == NULL || output == NULL ) - return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - - cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_ECB ); - if( cipher_info == NULL ) - { - /* Failing at this point must be due to a build issue */ - ret = MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE; - goto exit; - } - - if( key_length == MBEDTLS_AES_BLOCK_SIZE ) - { - /* Use key as is */ - memcpy( int_key, key, MBEDTLS_AES_BLOCK_SIZE ); - } - else - { - memset( zero_key, 0, MBEDTLS_AES_BLOCK_SIZE ); - - ret = mbedtls_cipher_cmac( cipher_info, zero_key, 128, key, - key_length, int_key ); - if( ret != 0 ) - goto exit; - } - - ret = mbedtls_cipher_cmac( cipher_info, int_key, 128, input, in_len, - output ); - -exit: - mbedtls_platform_zeroize( int_key, sizeof( int_key ) ); - - return( ret ); -} -#endif /* MBEDTLS_AES_C */ - -#endif /* !MBEDTLS_CMAC_ALT */ - -#if defined(MBEDTLS_SELF_TEST) -/* - * CMAC test data for SP800-38B - * http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/AES_CMAC.pdf - * http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/TDES_CMAC.pdf - * - * AES-CMAC-PRF-128 test data from RFC 4615 - * https://tools.ietf.org/html/rfc4615#page-4 - */ - -#define NB_CMAC_TESTS_PER_KEY 4 -#define NB_PRF_TESTS 3 - -#if defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C) -/* All CMAC test inputs are truncated from the same 64 byte buffer. */ -static const unsigned char test_message[] = { - /* PT */ - 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 -}; -#endif /* MBEDTLS_AES_C || MBEDTLS_DES_C */ - -#if defined(MBEDTLS_AES_C) -/* Truncation point of message for AES CMAC tests */ -static const unsigned int aes_message_lengths[NB_CMAC_TESTS_PER_KEY] = { - /* Mlen */ - 0, - 16, - 20, - 64 -}; - -/* CMAC-AES128 Test Data */ -static const unsigned char aes_128_key[16] = { - 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, - 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c -}; -static const unsigned char aes_128_subkeys[2][MBEDTLS_AES_BLOCK_SIZE] = { - { - /* K1 */ - 0xfb, 0xee, 0xd6, 0x18, 0x35, 0x71, 0x33, 0x66, - 0x7c, 0x85, 0xe0, 0x8f, 0x72, 0x36, 0xa8, 0xde - }, - { - /* K2 */ - 0xf7, 0xdd, 0xac, 0x30, 0x6a, 0xe2, 0x66, 0xcc, - 0xf9, 0x0b, 0xc1, 0x1e, 0xe4, 0x6d, 0x51, 0x3b - } -}; -static const unsigned char aes_128_expected_result[NB_CMAC_TESTS_PER_KEY][MBEDTLS_AES_BLOCK_SIZE] = { - { - /* Example #1 */ - 0xbb, 0x1d, 0x69, 0x29, 0xe9, 0x59, 0x37, 0x28, - 0x7f, 0xa3, 0x7d, 0x12, 0x9b, 0x75, 0x67, 0x46 - }, - { - /* Example #2 */ - 0x07, 0x0a, 0x16, 0xb4, 0x6b, 0x4d, 0x41, 0x44, - 0xf7, 0x9b, 0xdd, 0x9d, 0xd0, 0x4a, 0x28, 0x7c - }, - { - /* Example #3 */ - 0x7d, 0x85, 0x44, 0x9e, 0xa6, 0xea, 0x19, 0xc8, - 0x23, 0xa7, 0xbf, 0x78, 0x83, 0x7d, 0xfa, 0xde - }, - { - /* Example #4 */ - 0x51, 0xf0, 0xbe, 0xbf, 0x7e, 0x3b, 0x9d, 0x92, - 0xfc, 0x49, 0x74, 0x17, 0x79, 0x36, 0x3c, 0xfe - } -}; - -/* CMAC-AES192 Test Data */ -static const unsigned char aes_192_key[24] = { - 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, - 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5, - 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b -}; -static const unsigned char aes_192_subkeys[2][MBEDTLS_AES_BLOCK_SIZE] = { - { - /* K1 */ - 0x44, 0x8a, 0x5b, 0x1c, 0x93, 0x51, 0x4b, 0x27, - 0x3e, 0xe6, 0x43, 0x9d, 0xd4, 0xda, 0xa2, 0x96 - }, - { - /* K2 */ - 0x89, 0x14, 0xb6, 0x39, 0x26, 0xa2, 0x96, 0x4e, - 0x7d, 0xcc, 0x87, 0x3b, 0xa9, 0xb5, 0x45, 0x2c - } -}; -static const unsigned char aes_192_expected_result[NB_CMAC_TESTS_PER_KEY][MBEDTLS_AES_BLOCK_SIZE] = { - { - /* Example #1 */ - 0xd1, 0x7d, 0xdf, 0x46, 0xad, 0xaa, 0xcd, 0xe5, - 0x31, 0xca, 0xc4, 0x83, 0xde, 0x7a, 0x93, 0x67 - }, - { - /* Example #2 */ - 0x9e, 0x99, 0xa7, 0xbf, 0x31, 0xe7, 0x10, 0x90, - 0x06, 0x62, 0xf6, 0x5e, 0x61, 0x7c, 0x51, 0x84 - }, - { - /* Example #3 */ - 0x3d, 0x75, 0xc1, 0x94, 0xed, 0x96, 0x07, 0x04, - 0x44, 0xa9, 0xfa, 0x7e, 0xc7, 0x40, 0xec, 0xf8 - }, - { - /* Example #4 */ - 0xa1, 0xd5, 0xdf, 0x0e, 0xed, 0x79, 0x0f, 0x79, - 0x4d, 0x77, 0x58, 0x96, 0x59, 0xf3, 0x9a, 0x11 - } -}; - -/* CMAC-AES256 Test Data */ -static const unsigned char aes_256_key[32] = { - 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_256_subkeys[2][MBEDTLS_AES_BLOCK_SIZE] = { - { - /* K1 */ - 0xca, 0xd1, 0xed, 0x03, 0x29, 0x9e, 0xed, 0xac, - 0x2e, 0x9a, 0x99, 0x80, 0x86, 0x21, 0x50, 0x2f - }, - { - /* K2 */ - 0x95, 0xa3, 0xda, 0x06, 0x53, 0x3d, 0xdb, 0x58, - 0x5d, 0x35, 0x33, 0x01, 0x0c, 0x42, 0xa0, 0xd9 - } -}; -static const unsigned char aes_256_expected_result[NB_CMAC_TESTS_PER_KEY][MBEDTLS_AES_BLOCK_SIZE] = { - { - /* Example #1 */ - 0x02, 0x89, 0x62, 0xf6, 0x1b, 0x7b, 0xf8, 0x9e, - 0xfc, 0x6b, 0x55, 0x1f, 0x46, 0x67, 0xd9, 0x83 - }, - { - /* Example #2 */ - 0x28, 0xa7, 0x02, 0x3f, 0x45, 0x2e, 0x8f, 0x82, - 0xbd, 0x4b, 0xf2, 0x8d, 0x8c, 0x37, 0xc3, 0x5c - }, - { - /* Example #3 */ - 0x15, 0x67, 0x27, 0xdc, 0x08, 0x78, 0x94, 0x4a, - 0x02, 0x3c, 0x1f, 0xe0, 0x3b, 0xad, 0x6d, 0x93 - }, - { - /* Example #4 */ - 0xe1, 0x99, 0x21, 0x90, 0x54, 0x9f, 0x6e, 0xd5, - 0x69, 0x6a, 0x2c, 0x05, 0x6c, 0x31, 0x54, 0x10 - } -}; -#endif /* MBEDTLS_AES_C */ - -#if defined(MBEDTLS_DES_C) -/* Truncation point of message for 3DES CMAC tests */ -static const unsigned int des3_message_lengths[NB_CMAC_TESTS_PER_KEY] = { - 0, - 16, - 20, - 32 -}; - -/* CMAC-TDES (Generation) - 2 Key Test Data */ -static const unsigned char des3_2key_key[24] = { - /* Key1 */ - 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, - /* Key2 */ - 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xEF, 0x01, - /* Key3 */ - 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef -}; -static const unsigned char des3_2key_subkeys[2][8] = { - { - /* K1 */ - 0x0d, 0xd2, 0xcb, 0x7a, 0x3d, 0x88, 0x88, 0xd9 - }, - { - /* K2 */ - 0x1b, 0xa5, 0x96, 0xf4, 0x7b, 0x11, 0x11, 0xb2 - } -}; -static const unsigned char des3_2key_expected_result[NB_CMAC_TESTS_PER_KEY][MBEDTLS_DES3_BLOCK_SIZE] = { - { - /* Sample #1 */ - 0x79, 0xce, 0x52, 0xa7, 0xf7, 0x86, 0xa9, 0x60 - }, - { - /* Sample #2 */ - 0xcc, 0x18, 0xa0, 0xb7, 0x9a, 0xf2, 0x41, 0x3b - }, - { - /* Sample #3 */ - 0xc0, 0x6d, 0x37, 0x7e, 0xcd, 0x10, 0x19, 0x69 - }, - { - /* Sample #4 */ - 0x9c, 0xd3, 0x35, 0x80, 0xf9, 0xb6, 0x4d, 0xfb - } -}; - -/* CMAC-TDES (Generation) - 3 Key Test Data */ -static const unsigned char des3_3key_key[24] = { - /* Key1 */ - 0x01, 0x23, 0x45, 0x67, 0x89, 0xaa, 0xcd, 0xef, - /* Key2 */ - 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01, - /* Key3 */ - 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23 -}; -static const unsigned char des3_3key_subkeys[2][8] = { - { - /* K1 */ - 0x9d, 0x74, 0xe7, 0x39, 0x33, 0x17, 0x96, 0xc0 - }, - { - /* K2 */ - 0x3a, 0xe9, 0xce, 0x72, 0x66, 0x2f, 0x2d, 0x9b - } -}; -static const unsigned char des3_3key_expected_result[NB_CMAC_TESTS_PER_KEY][MBEDTLS_DES3_BLOCK_SIZE] = { - { - /* Sample #1 */ - 0x7d, 0xb0, 0xd3, 0x7d, 0xf9, 0x36, 0xc5, 0x50 - }, - { - /* Sample #2 */ - 0x30, 0x23, 0x9c, 0xf1, 0xf5, 0x2e, 0x66, 0x09 - }, - { - /* Sample #3 */ - 0x6c, 0x9f, 0x3e, 0xe4, 0x92, 0x3f, 0x6b, 0xe2 - }, - { - /* Sample #4 */ - 0x99, 0x42, 0x9b, 0xd0, 0xbF, 0x79, 0x04, 0xe5 - } -}; - -#endif /* MBEDTLS_DES_C */ - -#if defined(MBEDTLS_AES_C) -/* AES AES-CMAC-PRF-128 Test Data */ -static const unsigned char PRFK[] = { - /* Key */ - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, - 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, - 0xed, 0xcb -}; - -/* Sizes in bytes */ -static const size_t PRFKlen[NB_PRF_TESTS] = { - 18, - 16, - 10 -}; - -/* Message */ -static const unsigned char PRFM[] = { - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, - 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, - 0x10, 0x11, 0x12, 0x13 -}; - -static const unsigned char PRFT[NB_PRF_TESTS][16] = { - { - 0x84, 0xa3, 0x48, 0xa4, 0xa4, 0x5d, 0x23, 0x5b, - 0xab, 0xff, 0xfc, 0x0d, 0x2b, 0x4d, 0xa0, 0x9a - }, - { - 0x98, 0x0a, 0xe8, 0x7b, 0x5f, 0x4c, 0x9c, 0x52, - 0x14, 0xf5, 0xb6, 0xa8, 0x45, 0x5e, 0x4c, 0x2d - }, - { - 0x29, 0x0d, 0x9e, 0x11, 0x2e, 0xdb, 0x09, 0xee, - 0x14, 0x1f, 0xcf, 0x64, 0xc0, 0xb7, 0x2f, 0x3d - } -}; -#endif /* MBEDTLS_AES_C */ - -static int cmac_test_subkeys( int verbose, - const char* testname, - const unsigned char* key, - int keybits, - const unsigned char* subkeys, - mbedtls_cipher_type_t cipher_type, - int block_size, - int num_tests ) -{ - int i, ret = 0; - mbedtls_cipher_context_t ctx; - const mbedtls_cipher_info_t *cipher_info; - unsigned char K1[MBEDTLS_CIPHER_BLKSIZE_MAX]; - unsigned char K2[MBEDTLS_CIPHER_BLKSIZE_MAX]; - - cipher_info = mbedtls_cipher_info_from_type( cipher_type ); - if( cipher_info == NULL ) - { - /* Failing at this point must be due to a build issue */ - return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE ); - } - - for( i = 0; i < num_tests; i++ ) - { - if( verbose != 0 ) - mbedtls_printf( " %s CMAC subkey #%d: ", testname, i + 1 ); - - mbedtls_cipher_init( &ctx ); - - if( ( ret = mbedtls_cipher_setup( &ctx, cipher_info ) ) != 0 ) - { - if( verbose != 0 ) - mbedtls_printf( "test execution failed\n" ); - - goto cleanup; - } - - if( ( ret = mbedtls_cipher_setkey( &ctx, key, keybits, - MBEDTLS_ENCRYPT ) ) != 0 ) - { - /* When CMAC is implemented by an alternative implementation, or - * the underlying primitive itself is implemented alternatively, - * AES-192 may be unavailable. This should not cause the selftest - * function to fail. */ - if( ( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED || - ret == MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE ) && - cipher_type == MBEDTLS_CIPHER_AES_192_ECB ) { - if( verbose != 0 ) - mbedtls_printf( "skipped\n" ); - goto next_test; - } - - if( verbose != 0 ) - mbedtls_printf( "test execution failed\n" ); - - goto cleanup; - } - - ret = cmac_generate_subkeys( &ctx, K1, K2 ); - if( ret != 0 ) - { - if( verbose != 0 ) - mbedtls_printf( "failed\n" ); - - goto cleanup; - } - - if( ( ret = memcmp( K1, subkeys, block_size ) ) != 0 || - ( ret = memcmp( K2, &subkeys[block_size], block_size ) ) != 0 ) - { - if( verbose != 0 ) - mbedtls_printf( "failed\n" ); - - goto cleanup; - } - - if( verbose != 0 ) - mbedtls_printf( "passed\n" ); - -next_test: - mbedtls_cipher_free( &ctx ); - } - - ret = 0; - goto exit; - -cleanup: - mbedtls_cipher_free( &ctx ); - -exit: - return( ret ); -} - -static int cmac_test_wth_cipher( int verbose, - const char* testname, - const unsigned char* key, - int keybits, - const unsigned char* messages, - const unsigned int message_lengths[4], - const unsigned char* expected_result, - mbedtls_cipher_type_t cipher_type, - int block_size, - int num_tests ) -{ - const mbedtls_cipher_info_t *cipher_info; - int i, ret = 0; - unsigned char output[MBEDTLS_CIPHER_BLKSIZE_MAX]; - - cipher_info = mbedtls_cipher_info_from_type( cipher_type ); - if( cipher_info == NULL ) - { - /* Failing at this point must be due to a build issue */ - ret = MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE; - goto exit; - } - - for( i = 0; i < num_tests; i++ ) - { - if( verbose != 0 ) - mbedtls_printf( " %s CMAC #%d: ", testname, i + 1 ); - - if( ( ret = mbedtls_cipher_cmac( cipher_info, key, keybits, messages, - message_lengths[i], output ) ) != 0 ) - { - /* When CMAC is implemented by an alternative implementation, or - * the underlying primitive itself is implemented alternatively, - * AES-192 and/or 3DES may be unavailable. This should not cause - * the selftest function to fail. */ - if( ( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED || - ret == MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE ) && - ( cipher_type == MBEDTLS_CIPHER_AES_192_ECB || - cipher_type == MBEDTLS_CIPHER_DES_EDE3_ECB ) ) { - if( verbose != 0 ) - mbedtls_printf( "skipped\n" ); - continue; - } - - if( verbose != 0 ) - mbedtls_printf( "failed\n" ); - goto exit; - } - - if( ( ret = memcmp( output, &expected_result[i * block_size], block_size ) ) != 0 ) - { - if( verbose != 0 ) - mbedtls_printf( "failed\n" ); - goto exit; - } - - if( verbose != 0 ) - mbedtls_printf( "passed\n" ); - } - ret = 0; - -exit: - return( ret ); -} - -#if defined(MBEDTLS_AES_C) -static int test_aes128_cmac_prf( int verbose ) -{ - int i; - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char output[MBEDTLS_AES_BLOCK_SIZE]; - - for( i = 0; i < NB_PRF_TESTS; i++ ) - { - mbedtls_printf( " AES CMAC 128 PRF #%d: ", i ); - ret = mbedtls_aes_cmac_prf_128( PRFK, PRFKlen[i], PRFM, 20, output ); - if( ret != 0 || - memcmp( output, PRFT[i], MBEDTLS_AES_BLOCK_SIZE ) != 0 ) - { - - if( verbose != 0 ) - mbedtls_printf( "failed\n" ); - - return( ret ); - } - else if( verbose != 0 ) - { - mbedtls_printf( "passed\n" ); - } - } - return( ret ); -} -#endif /* MBEDTLS_AES_C */ - -int mbedtls_cmac_self_test( int verbose ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - -#if defined(MBEDTLS_AES_C) - /* AES-128 */ - if( ( ret = cmac_test_subkeys( verbose, - "AES 128", - aes_128_key, - 128, - (const unsigned char*)aes_128_subkeys, - MBEDTLS_CIPHER_AES_128_ECB, - MBEDTLS_AES_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - if( ( ret = cmac_test_wth_cipher( verbose, - "AES 128", - aes_128_key, - 128, - test_message, - aes_message_lengths, - (const unsigned char*)aes_128_expected_result, - MBEDTLS_CIPHER_AES_128_ECB, - MBEDTLS_AES_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - /* AES-192 */ - if( ( ret = cmac_test_subkeys( verbose, - "AES 192", - aes_192_key, - 192, - (const unsigned char*)aes_192_subkeys, - MBEDTLS_CIPHER_AES_192_ECB, - MBEDTLS_AES_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - if( ( ret = cmac_test_wth_cipher( verbose, - "AES 192", - aes_192_key, - 192, - test_message, - aes_message_lengths, - (const unsigned char*)aes_192_expected_result, - MBEDTLS_CIPHER_AES_192_ECB, - MBEDTLS_AES_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - /* AES-256 */ - if( ( ret = cmac_test_subkeys( verbose, - "AES 256", - aes_256_key, - 256, - (const unsigned char*)aes_256_subkeys, - MBEDTLS_CIPHER_AES_256_ECB, - MBEDTLS_AES_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - if( ( ret = cmac_test_wth_cipher ( verbose, - "AES 256", - aes_256_key, - 256, - test_message, - aes_message_lengths, - (const unsigned char*)aes_256_expected_result, - MBEDTLS_CIPHER_AES_256_ECB, - MBEDTLS_AES_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } -#endif /* MBEDTLS_AES_C */ - -#if defined(MBEDTLS_DES_C) - /* 3DES 2 key */ - if( ( ret = cmac_test_subkeys( verbose, - "3DES 2 key", - des3_2key_key, - 192, - (const unsigned char*)des3_2key_subkeys, - MBEDTLS_CIPHER_DES_EDE3_ECB, - MBEDTLS_DES3_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - if( ( ret = cmac_test_wth_cipher( verbose, - "3DES 2 key", - des3_2key_key, - 192, - test_message, - des3_message_lengths, - (const unsigned char*)des3_2key_expected_result, - MBEDTLS_CIPHER_DES_EDE3_ECB, - MBEDTLS_DES3_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - /* 3DES 3 key */ - if( ( ret = cmac_test_subkeys( verbose, - "3DES 3 key", - des3_3key_key, - 192, - (const unsigned char*)des3_3key_subkeys, - MBEDTLS_CIPHER_DES_EDE3_ECB, - MBEDTLS_DES3_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } - - if( ( ret = cmac_test_wth_cipher( verbose, - "3DES 3 key", - des3_3key_key, - 192, - test_message, - des3_message_lengths, - (const unsigned char*)des3_3key_expected_result, - MBEDTLS_CIPHER_DES_EDE3_ECB, - MBEDTLS_DES3_BLOCK_SIZE, - NB_CMAC_TESTS_PER_KEY ) ) != 0 ) - { - return( ret ); - } -#endif /* MBEDTLS_DES_C */ - -#if defined(MBEDTLS_AES_C) - if( ( ret = test_aes128_cmac_prf( verbose ) ) != 0 ) - return( ret ); -#endif /* MBEDTLS_AES_C */ - - if( verbose != 0 ) - mbedtls_printf( "\n" ); - - return( 0 ); -} - -#endif /* MBEDTLS_SELF_TEST */ - -#endif /* MBEDTLS_CMAC_C */ |