/*

 * Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <stdio.h>

#include "internal/cryptlib.h"

#include <openssl/evp.h>

#include <openssl/cmac.h>

#include "crypto/asn1.h"

/*

 * CMAC "ASN1" method. This is just here to indicate the maximum CMAC output

 * length and to free up a CMAC key.

 */

static int cmac_size(const EVP_PKEY *pkey)

{

    return EVP_MAX_BLOCK_LENGTH;

}

static void cmac_key_free(EVP_PKEY *pkey)

{

    CMAC_CTX *cmctx = EVP_PKEY_get0(pkey);

    CMAC_CTX_free(cmctx);

}

const EVP_PKEY_ASN1_METHOD cmac_asn1_meth = {

    EVP_PKEY_CMAC,

    EVP_PKEY_CMAC,

    0,

    "CMAC",

    "OpenSSL CMAC method",

    0, 0, 0, 0,

    0, 0, 0,

    cmac_size,

    0, 0,

    0, 0, 0, 0, 0, 0, 0,

    cmac_key_free,

    0,

    0, 0

};