crypto_platform.h

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/*
 *  Copyright The Mbed TLS Contributors
 *  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.
 */

#ifndef PSA_CRYPTO_PLATFORM_H
#define PSA_CRYPTO_PLATFORM_H
#include "mbedtls/private_access.h"

/* Include the Mbed TLS configuration file, the way Mbed TLS does it
 * in each of its header files. */
#include "mbedtls/build_info.h"

/* Translate between classic MBEDTLS_xxx feature symbols and PSA_xxx
 * feature symbols. */
#include "mbedtls/config_psa.h"

/* PSA requires several types which C99 provides in stdint.h. */
#include <stdint.h>

#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
    !defined(inline) && !defined(__cplusplus)
#define inline __inline
#endif

#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)

/* Building for the PSA Crypto service on a PSA platform, a key owner is a PSA
 * partition identifier.
 *
 * The function psa_its_identifier_of_slot() in psa_crypto_storage.c that
 * translates a key identifier to a key storage file name assumes that
 * mbedtls_key_owner_id_t is an 32 bits integer. This function thus needs
 * reworking if mbedtls_key_owner_id_t is not defined as a 32 bits integer
 * here anymore.
 */
typedef int32_t mbedtls_key_owner_id_t;

static inline int mbedtls_key_owner_id_equal( mbedtls_key_owner_id_t id1,
                                              mbedtls_key_owner_id_t id2 )
{
    return( id1 == id2 );
}

#endif /* MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER */

/*
 * When MBEDTLS_PSA_CRYPTO_SPM is defined, the code is being built for SPM
 * (Secure Partition Manager) integration which separates the code into two
 * parts: NSPE (Non-Secure Processing Environment) and SPE (Secure Processing
 * Environment). When building for the SPE, an additional header file should be
 * included.
 */
#if defined(MBEDTLS_PSA_CRYPTO_SPM)
#define PSA_CRYPTO_SECURE 1
#include "crypto_spe.h"
#endif // MBEDTLS_PSA_CRYPTO_SPM

#if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)

typedef struct {
    uintptr_t MBEDTLS_PRIVATE(opaque)[2];
} mbedtls_psa_external_random_context_t;
#endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */

#endif /* PSA_CRYPTO_PLATFORM_H */