Kenji Arai / mbed-os_TYBLE16

mbed-os5 only for TYBLE16

Dependents:   TYBLE16_simple_data_logger TYBLE16_MP3_Air

features/cryptocell/FEATURE_CRYPTOCELL310/cmac_alt.c@1:9db0e321a9f4, 2019-12-31 (annotated)

Committer:
kenjiArai
Date:
Tue Dec 31 06:02:27 2019 +0000
Revision:
1:9db0e321a9f4
updated based on mbed-os5.15.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 1:9db0e321a9f4 1 /*
kenjiArai 1:9db0e321a9f4 2 * cmac_alt.c
kenjiArai 1:9db0e321a9f4 3 *
kenjiArai 1:9db0e321a9f4 4 * Copyright (C) 2019, Arm Limited, All Rights Reserved
kenjiArai 1:9db0e321a9f4 5 * SPDX-License-Identifier: Apache-2.0
kenjiArai 1:9db0e321a9f4 6 *
kenjiArai 1:9db0e321a9f4 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
kenjiArai 1:9db0e321a9f4 8 * not use this file except in compliance with the License.
kenjiArai 1:9db0e321a9f4 9 * You may obtain a copy of the License at
kenjiArai 1:9db0e321a9f4 10 *
kenjiArai 1:9db0e321a9f4 11 * http://www.apache.org/licenses/LICENSE-2.0
kenjiArai 1:9db0e321a9f4 12 *
kenjiArai 1:9db0e321a9f4 13 * Unless required by applicable law or agreed to in writing, software
kenjiArai 1:9db0e321a9f4 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
kenjiArai 1:9db0e321a9f4 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kenjiArai 1:9db0e321a9f4 16 * See the License for the specific language governing permissions and
kenjiArai 1:9db0e321a9f4 17 * limitations under the License.
kenjiArai 1:9db0e321a9f4 18 *
kenjiArai 1:9db0e321a9f4 19 */
kenjiArai 1:9db0e321a9f4 20
kenjiArai 1:9db0e321a9f4 21 #include "mbedtls/cmac.h"
kenjiArai 1:9db0e321a9f4 22 #if defined(MBEDTLS_CMAC_ALT)
kenjiArai 1:9db0e321a9f4 23 #include "mbedtls/platform.h"
kenjiArai 1:9db0e321a9f4 24 #include "mbedtls/platform_util.h"
kenjiArai 1:9db0e321a9f4 25 #if defined(MBEDTLS_AES_C)
kenjiArai 1:9db0e321a9f4 26 #include "mbedtls/aes.h"
kenjiArai 1:9db0e321a9f4 27 #endif
kenjiArai 1:9db0e321a9f4 28 #include "ssi_aes_defs.h"
kenjiArai 1:9db0e321a9f4 29 #include <string.h>
kenjiArai 1:9db0e321a9f4 30
kenjiArai 1:9db0e321a9f4 31 static int init_cc( mbedtls_cmac_context_t *cmac_ctx )
kenjiArai 1:9db0e321a9f4 32 {
kenjiArai 1:9db0e321a9f4 33 int ret = 0;
kenjiArai 1:9db0e321a9f4 34 SaSiAesUserKeyData_t CC_KeyData;
kenjiArai 1:9db0e321a9f4 35 if( SaSi_AesInit( &cmac_ctx->CC_Context, SASI_AES_ENCRYPT,
kenjiArai 1:9db0e321a9f4 36 SASI_AES_MODE_CMAC, SASI_AES_PADDING_NONE ) != 0 )
kenjiArai 1:9db0e321a9f4 37 {
kenjiArai 1:9db0e321a9f4 38 return( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
kenjiArai 1:9db0e321a9f4 39 }
kenjiArai 1:9db0e321a9f4 40
kenjiArai 1:9db0e321a9f4 41 CC_KeyData.pKey = cmac_ctx->CC_Key;
kenjiArai 1:9db0e321a9f4 42 CC_KeyData.keySize = cmac_ctx->CC_keySizeInBytes;
kenjiArai 1:9db0e321a9f4 43
kenjiArai 1:9db0e321a9f4 44 if( SaSi_AesSetKey( &cmac_ctx->CC_Context, SASI_AES_USER_KEY,
kenjiArai 1:9db0e321a9f4 45 &CC_KeyData, sizeof( CC_KeyData ) ) != 0 )
kenjiArai 1:9db0e321a9f4 46 {
kenjiArai 1:9db0e321a9f4 47 ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
kenjiArai 1:9db0e321a9f4 48 goto exit;
kenjiArai 1:9db0e321a9f4 49 }
kenjiArai 1:9db0e321a9f4 50
kenjiArai 1:9db0e321a9f4 51 cmac_ctx->is_cc_initiated = 1;
kenjiArai 1:9db0e321a9f4 52
kenjiArai 1:9db0e321a9f4 53 exit:
kenjiArai 1:9db0e321a9f4 54 return( ret );
kenjiArai 1:9db0e321a9f4 55 }
kenjiArai 1:9db0e321a9f4 56
kenjiArai 1:9db0e321a9f4 57 static int deinit_cc( mbedtls_cmac_context_t *cmac_ctx )
kenjiArai 1:9db0e321a9f4 58 {
kenjiArai 1:9db0e321a9f4 59 if( cmac_ctx->is_cc_initiated == 1 &&
kenjiArai 1:9db0e321a9f4 60 SaSi_AesFree( &cmac_ctx->CC_Context ) != 0 )
kenjiArai 1:9db0e321a9f4 61 return( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
kenjiArai 1:9db0e321a9f4 62
kenjiArai 1:9db0e321a9f4 63 return( 0 );
kenjiArai 1:9db0e321a9f4 64 }
kenjiArai 1:9db0e321a9f4 65
kenjiArai 1:9db0e321a9f4 66 int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx,
kenjiArai 1:9db0e321a9f4 67 const unsigned char *key, size_t keybits )
kenjiArai 1:9db0e321a9f4 68 {
kenjiArai 1:9db0e321a9f4 69 mbedtls_cmac_context_t *cmac_ctx;
kenjiArai 1:9db0e321a9f4 70 mbedtls_cipher_type_t type;
kenjiArai 1:9db0e321a9f4 71
kenjiArai 1:9db0e321a9f4 72 if( ctx == NULL || ctx->cipher_info == NULL || key == NULL )
kenjiArai 1:9db0e321a9f4 73 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 74
kenjiArai 1:9db0e321a9f4 75 type = ctx->cipher_info->type;
kenjiArai 1:9db0e321a9f4 76
kenjiArai 1:9db0e321a9f4 77 switch( type )
kenjiArai 1:9db0e321a9f4 78 {
kenjiArai 1:9db0e321a9f4 79 case MBEDTLS_CIPHER_AES_128_ECB:
kenjiArai 1:9db0e321a9f4 80 break;
kenjiArai 1:9db0e321a9f4 81 case MBEDTLS_CIPHER_AES_192_ECB:
kenjiArai 1:9db0e321a9f4 82 case MBEDTLS_CIPHER_AES_256_ECB:
kenjiArai 1:9db0e321a9f4 83 case MBEDTLS_CIPHER_DES_EDE3_ECB:
kenjiArai 1:9db0e321a9f4 84 return( MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED );
kenjiArai 1:9db0e321a9f4 85 default:
kenjiArai 1:9db0e321a9f4 86 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 87 }
kenjiArai 1:9db0e321a9f4 88
kenjiArai 1:9db0e321a9f4 89
kenjiArai 1:9db0e321a9f4 90 switch( keybits )
kenjiArai 1:9db0e321a9f4 91 {
kenjiArai 1:9db0e321a9f4 92 case 128:
kenjiArai 1:9db0e321a9f4 93 /* Allocated and initialise in the cipher context memory for the CMAC
kenjiArai 1:9db0e321a9f4 94 * context
kenjiArai 1:9db0e321a9f4 95 */
kenjiArai 1:9db0e321a9f4 96 cmac_ctx = mbedtls_calloc( 1, sizeof( mbedtls_cmac_context_t ) );
kenjiArai 1:9db0e321a9f4 97 if( cmac_ctx == NULL )
kenjiArai 1:9db0e321a9f4 98 return( MBEDTLS_ERR_CIPHER_ALLOC_FAILED );
kenjiArai 1:9db0e321a9f4 99 cmac_ctx->CC_keySizeInBytes = ( keybits / 8 );
kenjiArai 1:9db0e321a9f4 100 memcpy( cmac_ctx->CC_Key, key, cmac_ctx->CC_keySizeInBytes );
kenjiArai 1:9db0e321a9f4 101 break;
kenjiArai 1:9db0e321a9f4 102 case 192:
kenjiArai 1:9db0e321a9f4 103 case 256:
kenjiArai 1:9db0e321a9f4 104 return( MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED );
kenjiArai 1:9db0e321a9f4 105 default:
kenjiArai 1:9db0e321a9f4 106 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 107 }
kenjiArai 1:9db0e321a9f4 108
kenjiArai 1:9db0e321a9f4 109 ctx->cmac_ctx = cmac_ctx;
kenjiArai 1:9db0e321a9f4 110 return( init_cc( cmac_ctx ) );
kenjiArai 1:9db0e321a9f4 111 }
kenjiArai 1:9db0e321a9f4 112
kenjiArai 1:9db0e321a9f4 113 int mbedtls_cipher_cmac_update( mbedtls_cipher_context_t *ctx,
kenjiArai 1:9db0e321a9f4 114 const unsigned char *input, size_t ilen )
kenjiArai 1:9db0e321a9f4 115 {
kenjiArai 1:9db0e321a9f4 116 mbedtls_cmac_context_t *cmac_ctx;
kenjiArai 1:9db0e321a9f4 117 int ret = 0;
kenjiArai 1:9db0e321a9f4 118 size_t block_size;
kenjiArai 1:9db0e321a9f4 119
kenjiArai 1:9db0e321a9f4 120 if( ctx == NULL || ctx->cipher_info == NULL || input == NULL ||
kenjiArai 1:9db0e321a9f4 121 ctx->cmac_ctx == NULL )
kenjiArai 1:9db0e321a9f4 122 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 123
kenjiArai 1:9db0e321a9f4 124 if( ctx == NULL || ctx->cipher_info == NULL )
kenjiArai 1:9db0e321a9f4 125 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 126
kenjiArai 1:9db0e321a9f4 127 block_size = ctx->cipher_info->block_size;
kenjiArai 1:9db0e321a9f4 128 if( block_size != SASI_AES_BLOCK_SIZE_IN_BYTES )
kenjiArai 1:9db0e321a9f4 129 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 130
kenjiArai 1:9db0e321a9f4 131 cmac_ctx = ctx->cmac_ctx;
kenjiArai 1:9db0e321a9f4 132
kenjiArai 1:9db0e321a9f4 133 /* Is there data still to process from the last call?
kenjiArai 1:9db0e321a9f4 134 */
kenjiArai 1:9db0e321a9f4 135 if( cmac_ctx->unprocessed_len > 0 )
kenjiArai 1:9db0e321a9f4 136 {
kenjiArai 1:9db0e321a9f4 137 const size_t size_to_copy = ilen > ( block_size - cmac_ctx->unprocessed_len ) ?
kenjiArai 1:9db0e321a9f4 138 block_size - cmac_ctx->unprocessed_len : ilen;
kenjiArai 1:9db0e321a9f4 139 memcpy( &cmac_ctx->unprocessed_block[cmac_ctx->unprocessed_len],
kenjiArai 1:9db0e321a9f4 140 input, size_to_copy );
kenjiArai 1:9db0e321a9f4 141 cmac_ctx->unprocessed_len += size_to_copy;
kenjiArai 1:9db0e321a9f4 142 input += size_to_copy;
kenjiArai 1:9db0e321a9f4 143 ilen -= size_to_copy;
kenjiArai 1:9db0e321a9f4 144
kenjiArai 1:9db0e321a9f4 145 /*
kenjiArai 1:9db0e321a9f4 146 * Process the unproccessed data, in case it reached a full AES block,
kenjiArai 1:9db0e321a9f4 147 * and there is still input data.
kenjiArai 1:9db0e321a9f4 148 */
kenjiArai 1:9db0e321a9f4 149 if( cmac_ctx->unprocessed_len == SASI_AES_BLOCK_SIZE_IN_BYTES && ilen > 0 )
kenjiArai 1:9db0e321a9f4 150 {
kenjiArai 1:9db0e321a9f4 151 if( SaSi_AesBlock( &cmac_ctx->CC_Context, cmac_ctx->unprocessed_block,
kenjiArai 1:9db0e321a9f4 152 SASI_AES_BLOCK_SIZE_IN_BYTES, NULL ) != 0 )
kenjiArai 1:9db0e321a9f4 153 {
kenjiArai 1:9db0e321a9f4 154 ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
kenjiArai 1:9db0e321a9f4 155 goto exit;
kenjiArai 1:9db0e321a9f4 156 }
kenjiArai 1:9db0e321a9f4 157 cmac_ctx->unprocessed_len = 0;
kenjiArai 1:9db0e321a9f4 158 }
kenjiArai 1:9db0e321a9f4 159 }
kenjiArai 1:9db0e321a9f4 160
kenjiArai 1:9db0e321a9f4 161 if( ilen > 0 )
kenjiArai 1:9db0e321a9f4 162 {
kenjiArai 1:9db0e321a9f4 163 const size_t size_to_store = ( ilen % SASI_AES_BLOCK_SIZE_IN_BYTES == 0 ) ?
kenjiArai 1:9db0e321a9f4 164 SASI_AES_BLOCK_SIZE_IN_BYTES : ilen % SASI_AES_BLOCK_SIZE_IN_BYTES;
kenjiArai 1:9db0e321a9f4 165 memcpy( cmac_ctx->unprocessed_block,
kenjiArai 1:9db0e321a9f4 166 input + ilen - size_to_store,
kenjiArai 1:9db0e321a9f4 167 size_to_store );
kenjiArai 1:9db0e321a9f4 168 cmac_ctx->unprocessed_len = size_to_store;
kenjiArai 1:9db0e321a9f4 169 ilen -= size_to_store;
kenjiArai 1:9db0e321a9f4 170 if( ilen > 0 )
kenjiArai 1:9db0e321a9f4 171 {
kenjiArai 1:9db0e321a9f4 172 if( SaSi_AesBlock( &cmac_ctx->CC_Context, (uint8_t *)input,
kenjiArai 1:9db0e321a9f4 173 ilen, NULL ) != 0 )
kenjiArai 1:9db0e321a9f4 174 {
kenjiArai 1:9db0e321a9f4 175 ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
kenjiArai 1:9db0e321a9f4 176 goto exit;
kenjiArai 1:9db0e321a9f4 177 }
kenjiArai 1:9db0e321a9f4 178 }
kenjiArai 1:9db0e321a9f4 179 }
kenjiArai 1:9db0e321a9f4 180
kenjiArai 1:9db0e321a9f4 181 exit:
kenjiArai 1:9db0e321a9f4 182 if( ret != 0 )
kenjiArai 1:9db0e321a9f4 183 {
kenjiArai 1:9db0e321a9f4 184 deinit_cc( cmac_ctx );
kenjiArai 1:9db0e321a9f4 185 mbedtls_platform_zeroize( cmac_ctx, sizeof( *cmac_ctx ) );
kenjiArai 1:9db0e321a9f4 186 mbedtls_free( cmac_ctx );
kenjiArai 1:9db0e321a9f4 187 }
kenjiArai 1:9db0e321a9f4 188 return( ret );
kenjiArai 1:9db0e321a9f4 189 }
kenjiArai 1:9db0e321a9f4 190
kenjiArai 1:9db0e321a9f4 191 int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
kenjiArai 1:9db0e321a9f4 192 unsigned char *output )
kenjiArai 1:9db0e321a9f4 193 {
kenjiArai 1:9db0e321a9f4 194 mbedtls_cmac_context_t *cmac_ctx;
kenjiArai 1:9db0e321a9f4 195 int ret = 0;
kenjiArai 1:9db0e321a9f4 196 size_t olen = SASI_AES_BLOCK_SIZE_IN_BYTES;
kenjiArai 1:9db0e321a9f4 197
kenjiArai 1:9db0e321a9f4 198 if( ctx == NULL || ctx->cipher_info == NULL ||
kenjiArai 1:9db0e321a9f4 199 ctx->cmac_ctx == NULL || output == NULL )
kenjiArai 1:9db0e321a9f4 200 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 201
kenjiArai 1:9db0e321a9f4 202 cmac_ctx = ctx->cmac_ctx;
kenjiArai 1:9db0e321a9f4 203
kenjiArai 1:9db0e321a9f4 204 if( ( ret = SaSi_AesFinish( &cmac_ctx->CC_Context, cmac_ctx->unprocessed_len,
kenjiArai 1:9db0e321a9f4 205 cmac_ctx->unprocessed_block,
kenjiArai 1:9db0e321a9f4 206 cmac_ctx->unprocessed_len, output, &olen ) ) != 0 )
kenjiArai 1:9db0e321a9f4 207 {
kenjiArai 1:9db0e321a9f4 208 ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
kenjiArai 1:9db0e321a9f4 209 goto exit;
kenjiArai 1:9db0e321a9f4 210 }
kenjiArai 1:9db0e321a9f4 211
kenjiArai 1:9db0e321a9f4 212 exit:
kenjiArai 1:9db0e321a9f4 213 if( deinit_cc( cmac_ctx ) && ret == 0 )
kenjiArai 1:9db0e321a9f4 214 {
kenjiArai 1:9db0e321a9f4 215 ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
kenjiArai 1:9db0e321a9f4 216 }
kenjiArai 1:9db0e321a9f4 217
kenjiArai 1:9db0e321a9f4 218 return( ret );
kenjiArai 1:9db0e321a9f4 219 }
kenjiArai 1:9db0e321a9f4 220
kenjiArai 1:9db0e321a9f4 221 int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx )
kenjiArai 1:9db0e321a9f4 222 {
kenjiArai 1:9db0e321a9f4 223 mbedtls_cmac_context_t *cmac_ctx;
kenjiArai 1:9db0e321a9f4 224
kenjiArai 1:9db0e321a9f4 225 if( ctx == NULL || ctx->cipher_info == NULL || ctx->cmac_ctx == NULL )
kenjiArai 1:9db0e321a9f4 226 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 227
kenjiArai 1:9db0e321a9f4 228 cmac_ctx = ctx->cmac_ctx;
kenjiArai 1:9db0e321a9f4 229
kenjiArai 1:9db0e321a9f4 230 /* Reset the internal state */
kenjiArai 1:9db0e321a9f4 231 cmac_ctx->unprocessed_len = 0;
kenjiArai 1:9db0e321a9f4 232 mbedtls_platform_zeroize( cmac_ctx->unprocessed_block,
kenjiArai 1:9db0e321a9f4 233 sizeof( cmac_ctx->unprocessed_block ) );
kenjiArai 1:9db0e321a9f4 234
kenjiArai 1:9db0e321a9f4 235 if( deinit_cc( cmac_ctx ) != 0 )
kenjiArai 1:9db0e321a9f4 236 return( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
kenjiArai 1:9db0e321a9f4 237
kenjiArai 1:9db0e321a9f4 238 return( init_cc( cmac_ctx ) );
kenjiArai 1:9db0e321a9f4 239 }
kenjiArai 1:9db0e321a9f4 240
kenjiArai 1:9db0e321a9f4 241 int mbedtls_cipher_cmac( const mbedtls_cipher_info_t *cipher_info,
kenjiArai 1:9db0e321a9f4 242 const unsigned char *key, size_t keylen,
kenjiArai 1:9db0e321a9f4 243 const unsigned char *input, size_t ilen,
kenjiArai 1:9db0e321a9f4 244 unsigned char *output )
kenjiArai 1:9db0e321a9f4 245 {
kenjiArai 1:9db0e321a9f4 246 int ret = 0;
kenjiArai 1:9db0e321a9f4 247 mbedtls_cipher_context_t ctx;
kenjiArai 1:9db0e321a9f4 248 size_t olen = SASI_AES_BLOCK_SIZE_IN_BYTES;
kenjiArai 1:9db0e321a9f4 249
kenjiArai 1:9db0e321a9f4 250 if( cipher_info == NULL || key == NULL ||
kenjiArai 1:9db0e321a9f4 251 input == NULL || output == NULL )
kenjiArai 1:9db0e321a9f4 252 return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
kenjiArai 1:9db0e321a9f4 253
kenjiArai 1:9db0e321a9f4 254 mbedtls_cipher_init( &ctx );
kenjiArai 1:9db0e321a9f4 255
kenjiArai 1:9db0e321a9f4 256 if( ( ret = mbedtls_cipher_setup( &ctx, cipher_info ) ) != 0 )
kenjiArai 1:9db0e321a9f4 257 goto exit;
kenjiArai 1:9db0e321a9f4 258
kenjiArai 1:9db0e321a9f4 259 ret = mbedtls_cipher_cmac_starts( &ctx, key, keylen );
kenjiArai 1:9db0e321a9f4 260 if( ret != 0 )
kenjiArai 1:9db0e321a9f4 261 goto exit;
kenjiArai 1:9db0e321a9f4 262
kenjiArai 1:9db0e321a9f4 263 if( SaSi_AesFinish( &ctx.cmac_ctx->CC_Context, ilen, ( uint8_t * ) input,
kenjiArai 1:9db0e321a9f4 264 ilen, output, &olen ) != 0 )
kenjiArai 1:9db0e321a9f4 265 {
kenjiArai 1:9db0e321a9f4 266 ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
kenjiArai 1:9db0e321a9f4 267 goto clear_cc;
kenjiArai 1:9db0e321a9f4 268 }
kenjiArai 1:9db0e321a9f4 269
kenjiArai 1:9db0e321a9f4 270 clear_cc:
kenjiArai 1:9db0e321a9f4 271 if( deinit_cc( ctx.cmac_ctx ) != 0 && ret == 0 )
kenjiArai 1:9db0e321a9f4 272 {
kenjiArai 1:9db0e321a9f4 273 ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
kenjiArai 1:9db0e321a9f4 274 }
kenjiArai 1:9db0e321a9f4 275
kenjiArai 1:9db0e321a9f4 276 exit:
kenjiArai 1:9db0e321a9f4 277 mbedtls_cipher_free( &ctx );
kenjiArai 1:9db0e321a9f4 278
kenjiArai 1:9db0e321a9f4 279 return( ret );
kenjiArai 1:9db0e321a9f4 280
kenjiArai 1:9db0e321a9f4 281 }
kenjiArai 1:9db0e321a9f4 282
kenjiArai 1:9db0e321a9f4 283 #if defined(MBEDTLS_AES_C)
kenjiArai 1:9db0e321a9f4 284
kenjiArai 1:9db0e321a9f4 285 int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
kenjiArai 1:9db0e321a9f4 286 const unsigned char *input, size_t in_len,
kenjiArai 1:9db0e321a9f4 287 unsigned char output[16] )
kenjiArai 1:9db0e321a9f4 288 {
kenjiArai 1:9db0e321a9f4 289 return( MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED );
kenjiArai 1:9db0e321a9f4 290 }
kenjiArai 1:9db0e321a9f4 291 #endif /* MBEDTLS_AES_C */
kenjiArai 1:9db0e321a9f4 292
kenjiArai 1:9db0e321a9f4 293
kenjiArai 1:9db0e321a9f4 294 #endif /* MBEDTLS_CMAC_ALT */