/**
 * \file psa/crypto_compat.h
 *
 * \brief PSA cryptography module: Backward compatibility aliases
 *
 * This header declares alternative names for macro and functions.
 * New application code should not use these names.
 * These names may be removed in a future version of Mbed Crypto.
 *
 * \note This file may not be included directly. Applications must
 * include psa/crypto.h.
 */
/*
 *  Copyright (C) 2019, 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_COMPAT_H
#define PSA_CRYPTO_COMPAT_H

#ifdef __cplusplus
extern "C" {
#endif

#if !defined(MBEDTLS_DEPRECATED_REMOVED)

/*
 * Mechanism for declaring deprecated values
 */
#if defined(MBEDTLS_DEPRECATED_WARNING) && !defined(MBEDTLS_PSA_DEPRECATED)
#define MBEDTLS_PSA_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_PSA_DEPRECATED
#endif

typedef MBEDTLS_PSA_DEPRECATED size_t mbedtls_deprecated_size_t;
typedef MBEDTLS_PSA_DEPRECATED psa_status_t mbedtls_deprecated_psa_status_t;
typedef MBEDTLS_PSA_DEPRECATED psa_key_usage_t mbedtls_deprecated_psa_key_usage_t;

#define MBEDTLS_DEPRECATED_CONSTANT( type, value )      \
    ( (mbedtls_deprecated_##type) ( value ) )

/*
 * Deprecated PSA Crypto error code definitions (PSA Crypto API  <= 1.0 beta2)
 */
#define PSA_ERROR_UNKNOWN_ERROR \
    MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_GENERIC_ERROR )
#define PSA_ERROR_OCCUPIED_SLOT \
    MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_ALREADY_EXISTS )
#define PSA_ERROR_EMPTY_SLOT \
    MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_DOES_NOT_EXIST )
#define PSA_ERROR_INSUFFICIENT_CAPACITY \
    MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_INSUFFICIENT_DATA )
#define PSA_ERROR_TAMPERING_DETECTED \
    MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_CORRUPTION_DETECTED )

/*
 * Deprecated PSA Crypto numerical encodings (PSA Crypto API  <= 1.0 beta3)
 */
#define PSA_KEY_USAGE_SIGN \
    MBEDTLS_DEPRECATED_CONSTANT( psa_key_usage_t, PSA_KEY_USAGE_SIGN_HASH )
#define PSA_KEY_USAGE_VERIFY \
    MBEDTLS_DEPRECATED_CONSTANT( psa_key_usage_t, PSA_KEY_USAGE_VERIFY_HASH )

/*
 * Deprecated PSA Crypto size calculation macros (PSA Crypto API  <= 1.0 beta3)
 */
#define PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE \
    MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_SIGNATURE_MAX_SIZE )
#define PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE( key_type, key_bits, alg ) \
    MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_SIGN_OUTPUT_SIZE( key_type, key_bits, alg ) )

/*
 * Deprecated PSA Crypto function names (PSA Crypto API  <= 1.0 beta3)
 */
/* Make these macros and not wrappers so that there is no cost to
 * applications that don't use the deprecated names.
 *
 * Put backslash-newline after "#define" to bypass check-names.sh which
 * would otherwise complain about lowercase macro names.
 */
#define \
    psa_asymmetric_sign( key, alg, hash, hash_length, signature, signature_size, signature_length ) \
    ( (mbedtls_deprecated_psa_status_t) psa_sign_hash( key, alg, hash, hash_length, signature, signature_size, signature_length ) )
#define \
    psa_asymmetric_verify( key, alg, hash, hash_length, signature, signature_length ) \
    ( (mbedtls_deprecated_psa_status_t) psa_verify_hash( key, alg, hash, hash_length, signature, signature_length ) )

#endif /* MBEDTLS_DEPRECATED_REMOVED */

#ifdef __cplusplus
}
#endif

#endif /* PSA_CRYPTO_COMPAT_H */