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# ========================
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# ========================
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
146 lines
7.1 KiB
C
146 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_INVALID_SIZE The operation failed because the data associated with provided uid is larger than `data_size`
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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`, `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_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_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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#endif /* PSA_CRYPTO_ITS_H */
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