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https://github.com/yuzu-mirror/mbedtls.git
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117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
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/*
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* PSA crypto layer on top of Mbed TLS crypto
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*/
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/* Copyright (C) 2018, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_PSA_CRYPTO_C)
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#include "psa/crypto.h"
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#include "psa_crypto_slot_management.h"
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#include "psa_crypto_storage.h"
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#include <stdlib.h>
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#include <string.h>
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#define mbedtls_calloc calloc
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#define mbedtls_free free
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#endif
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#define ARRAY_LENGTH( array ) ( sizeof( array ) / sizeof( *( array ) ) )
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psa_status_t psa_allocate_key( psa_key_type_t type,
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size_t max_bits,
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psa_key_handle_t *handle )
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{
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/* This implementation doesn't reserve memory for the keys. */
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(void) type;
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(void) max_bits;
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*handle = 0;
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return( psa_internal_allocate_key_slot( handle ) );
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}
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static psa_status_t persistent_key_setup( psa_key_lifetime_t lifetime,
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psa_key_id_t id,
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psa_key_handle_t *handle,
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psa_status_t wanted_load_status )
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{
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psa_status_t status;
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*handle = 0;
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if( lifetime != PSA_KEY_LIFETIME_PERSISTENT )
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return( PSA_ERROR_INVALID_ARGUMENT );
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status = psa_internal_allocate_key_slot( handle );
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if( status != PSA_SUCCESS )
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return( status );
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status = psa_internal_make_key_persistent( *handle, id );
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if( status != wanted_load_status )
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{
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psa_internal_release_key_slot( *handle );
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*handle = 0;
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}
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return( status );
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}
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psa_status_t psa_open_key( psa_key_lifetime_t lifetime,
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psa_key_id_t id,
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psa_key_handle_t *handle )
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{
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return( persistent_key_setup( lifetime, id, handle, PSA_SUCCESS ) );
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}
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psa_status_t psa_create_key( psa_key_lifetime_t lifetime,
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psa_key_id_t id,
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psa_key_type_t type,
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size_t max_bits,
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psa_key_handle_t *handle )
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{
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psa_status_t status;
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/* This implementation doesn't reserve memory for the keys. */
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(void) type;
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(void) max_bits;
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status = persistent_key_setup( lifetime, id, handle,
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PSA_ERROR_EMPTY_SLOT );
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switch( status )
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{
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case PSA_SUCCESS: return( PSA_ERROR_OCCUPIED_SLOT );
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case PSA_ERROR_EMPTY_SLOT: return( PSA_SUCCESS );
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default: return( status );
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}
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}
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psa_status_t psa_close_key( psa_key_handle_t handle )
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{
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return( psa_internal_release_key_slot( handle ) );
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}
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#endif /* MBEDTLS_PSA_CRYPTO_C */
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