mirror of
https://github.com/yuzu-emu/mbedtls.git
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78 lines
2.5 KiB
C
78 lines
2.5 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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#ifndef PSA_CRYPTO_SLOT_MANAGEMENT_H
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#define PSA_CRYPTO_SLOT_MANAGEMENT_H
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/* Number of key slots (plus one because 0 is not used).
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* The value is a compile-time constant for now, for simplicity. */
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#define PSA_KEY_SLOT_COUNT 32
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/** \defgroup core_slot_management Internal functions exposed by the core
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* @{
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*/
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/** Find a free key slot and mark it as in use.
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*
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* \param[out] handle On success, a slot number that is not in use.
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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*/
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psa_status_t psa_internal_allocate_key_slot( psa_key_handle_t *handle );
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/** Wipe an a key slot and mark it as available.
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*
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* This does not affect persistent storage.
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*
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* \param handle The key slot number to release.
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* \retval #PSA_ERROR_TAMPERING_DETECTED
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*/
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psa_status_t psa_internal_release_key_slot( psa_key_handle_t handle );
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/** Declare a slot as persistent and load it from storage.
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*
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* This function may only be called immediately after a successful call
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* to psa_internal_allocate_key_slot().
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*
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* \param handle A handle to a key slot freshly allocated with
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* psa_internal_allocate_key_slot().
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*
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* \retval #PSA_SUCCESS
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* The slot content was loaded successfully.
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* \retval #PSA_ERROR_EMPTY_SLOT
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* There is no content for this slot in persistent storage.
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* \retval #PSA_ERROR_INVALID_HANDLE
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* \p id is not acceptable.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_STORAGE_FAILURE
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*/
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psa_status_t psa_internal_make_key_persistent( psa_key_handle_t handle,
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psa_key_id_t id );
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/**@}*/
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#endif /* PSA_CRYPTO_SLOT_MANAGEMENT_H */
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