452b0a32ad
The return values of the functions are updated in the documetation. All possible return values are added including nested functions' return values. The values which cannot be returned are removed. Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
150 lines
7.1 KiB
C
150 lines
7.1 KiB
C
/** \file psa_crypto_its.h
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* \brief Interface of trusted storage that crypto is built on.
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*/
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/*
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* Copyright The Mbed TLS Contributors
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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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#ifndef PSA_CRYPTO_ITS_H
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#define PSA_CRYPTO_ITS_H
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#include <stddef.h>
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#include <stdint.h>
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#include <psa/crypto_types.h>
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#include <psa/crypto_values.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \brief Flags used when creating a data entry
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*/
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typedef uint32_t psa_storage_create_flags_t;
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/** \brief A type for UIDs used for identifying data
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*/
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typedef uint64_t psa_storage_uid_t;
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#define PSA_STORAGE_FLAG_NONE 0 /**< No flags to pass */
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#define PSA_STORAGE_FLAG_WRITE_ONCE (1 << 0) /**< The data associated with the uid will not be able to be modified or deleted. Intended to be used to set bits in `psa_storage_create_flags_t`*/
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/**
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* \brief A container for metadata associated with a specific uid
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*/
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struct psa_storage_info_t
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{
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uint32_t size; /**< The size of the data associated with a uid **/
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psa_storage_create_flags_t flags; /**< The flags set when the uid was created **/
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};
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/** Flag indicating that \ref psa_storage_create and \ref psa_storage_set_extended are supported */
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#define PSA_STORAGE_SUPPORT_SET_EXTENDED (1 << 0)
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/** \brief PSA storage specific error codes
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*/
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#define PSA_ERROR_INVALID_SIGNATURE ((psa_status_t)-149)
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#define PSA_ERROR_DATA_CORRUPT ((psa_status_t)-152)
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#define PSA_ITS_API_VERSION_MAJOR 1 /**< The major version number of the PSA ITS API. It will be incremented on significant updates that may include breaking changes */
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#define PSA_ITS_API_VERSION_MINOR 1 /**< The minor version number of the PSA ITS API. It will be incremented in small updates that are unlikely to include breaking changes */
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/**
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* \brief create a new or modify an existing uid/value pair
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*
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* \param[in] uid the identifier for the data
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* \param[in] data_length The size in bytes of the data in `p_data`
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* \param[in] p_data A buffer containing the data
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* \param[in] create_flags The flags that the data will be stored with
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*
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* \return A status indicating the success/failure of the operation
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*
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* \retval #PSA_SUCCESS The operation completed successfully
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* \retval #PSA_ERROR_NOT_PERMITTED The operation failed because the provided `uid` value was already created with PSA_STORAGE_WRITE_ONCE_FLAG
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* \retval #PSA_ERROR_NOT_SUPPORTED The operation failed because one or more of the flags provided in `create_flags` is not supported or is not valid
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* \retval #PSA_ERROR_INSUFFICIENT_STORAGE The operation failed because there was insufficient space on the storage medium
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* \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error)
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* \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(`p_data`)
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* is invalid, for example is `NULL` or references memory the caller cannot access
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*/
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psa_status_t psa_its_set(psa_storage_uid_t uid,
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uint32_t data_length,
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const void *p_data,
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psa_storage_create_flags_t create_flags);
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/**
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* \brief Retrieve the value associated with a provided uid
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*
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* \param[in] uid The uid value
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* \param[in] data_offset The starting offset of the data requested
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* \param[in] data_length the amount of data requested (and the minimum allocated size of the `p_data` buffer)
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* \param[out] p_data The buffer where the data will be placed upon successful completion
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* \param[out] p_data_length The amount of data returned in the p_data buffer
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*
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*
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* \return A status indicating the success/failure of the operation
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*
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* \retval #PSA_SUCCESS The operation completed successfully
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* \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided `uid` value was not found in the storage
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* \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error)
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* \retval #PSA_ERROR_DATA_CORRUPT The operation failed because stored data has been corrupted
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* \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(`p_data`, `p_data_length`)
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* is invalid. For example is `NULL` or references memory the caller cannot access.
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* In addition, this can also happen if an invalid offset was provided.
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*/
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psa_status_t psa_its_get(psa_storage_uid_t uid,
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uint32_t data_offset,
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uint32_t data_length,
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void *p_data,
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size_t *p_data_length );
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/**
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* \brief Retrieve the metadata about the provided uid
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*
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* \param[in] uid The uid value
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* \param[out] p_info A pointer to the `psa_storage_info_t` struct that will be populated with the metadata
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*
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* \return A status indicating the success/failure of the operation
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*
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* \retval #PSA_SUCCESS The operation completed successfully
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* \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided uid value was not found in the storage
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* \retval #PSA_ERROR_DATA_CORRUPT The operation failed because stored data has been corrupted
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* \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(`p_info`)
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* is invalid, for example is `NULL` or references memory the caller cannot access
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*/
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psa_status_t psa_its_get_info(psa_storage_uid_t uid,
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struct psa_storage_info_t *p_info);
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/**
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* \brief Remove the provided key and its associated data from the storage
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*
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* \param[in] uid The uid value
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*
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* \return A status indicating the success/failure of the operation
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*
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* \retval #PSA_SUCCESS The operation completed successfully
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* \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided key value was not found in the storage
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* \retval #PSA_ERROR_NOT_PERMITTED The operation failed because the provided key value was created with PSA_STORAGE_WRITE_ONCE_FLAG
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* \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error)
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*/
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psa_status_t psa_its_remove(psa_storage_uid_t uid);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PSA_CRYPTO_ITS_H */
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