include/psa/crypto_sizes.h

/**
 * \file psa/crypto_sizes.h
 *
 * \brief PSA cryptography module: Mbed TLS buffer size macros
 *
 * This file contains the definitions of macros that are useful to
 * compute buffer sizes. The signatures and semantics of these macros
 * are standardized, but the definitions are not, because they depend on
 * the available algorithms and, in some cases, on permitted tolerances
 * on buffer sizes.
 */
/*
 *  Copyright (C) 2018, ARM Limited, All Rights Reserved
 *  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.
 *
 *  This file is part of mbed TLS (https://tls.mbed.org)
 */

#ifndef PSA_CRYPTO_SIZES_H
#define PSA_CRYPTO_SIZES_H

/* Include the Mbed TLS configuration file, the way Mbed TLS does it
 * in each of its header files. */
#if !defined(MBEDTLS_CONFIG_FILE)
#include "../mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

#if defined(MBEDTLS_SHA512_C)
#define PSA_HASH_MAX_SIZE 64
#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128
#else
#define PSA_HASH_MAX_SIZE 32
#define PSA_HMAC_MAX_HASH_BLOCK_SIZE 64
#endif

#endif /* PSA_CRYPTO_SIZES_H */