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aes_cmac fix

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This commit is contained in:
merlokk 2018-10-31 16:39:26 +02:00
commit 4f04819a82
1 changed files with 7 additions and 0 deletions
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7
common/polarssl/libpcrypto.c
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@ -60,9 +60,16 @@ int aes_cmac(uint8_t *iv, uint8_t *key, uint8_t *input, uint8_t *mac, int length
data[length] = 0x80; data[length] = 0x80;
int datalen = (length & 0xfffffff0) + 0x10; int datalen = (length & 0xfffffff0) + 0x10;
// 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 )
// mbedtls_aes_cmac_prf_128(key, 16, input, length, mac);
// NIST 800-38B // NIST 800-38B
mbedtls_cipher_context_t ctx; mbedtls_cipher_context_t ctx;
mbedtls_cipher_init(&ctx); mbedtls_cipher_init(&ctx);
mbedtls_cipher_setup(&ctx, mbedtls_cipher_info_from_type(MBEDTLS_CIPHER_AES_128_ECB));
mbedtls_cipher_cmac_starts(&ctx, key, 128); mbedtls_cipher_cmac_starts(&ctx, key, 128);
mbedtls_cipher_cmac_update(&ctx, data, datalen); mbedtls_cipher_cmac_update(&ctx, data, datalen);
mbedtls_cipher_cmac_finish(&ctx, mac); mbedtls_cipher_cmac_finish(&ctx, mac);