/** \file psa_crypto_its.h * \brief Interface of trusted storage that crypto is built on. */ /* * 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_ITS_H #define PSA_CRYPTO_ITS_H #include #include #include #include #ifdef __cplusplus extern "C" { #endif /** \brief Flags used when creating a data entry */ typedef uint32_t psa_storage_create_flags_t; /** \brief A type for UIDs used for identifying data */ typedef uint64_t psa_storage_uid_t; #define PSA_STORAGE_FLAG_NONE 0 /**< No flags to pass */ #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*/ /** * \brief A container for metadata associated with a specific uid */ struct psa_storage_info_t { uint32_t size; /**< The size of the data associated with a uid **/ psa_storage_create_flags_t flags; /**< The flags set when the uid was created **/ }; /** Flag indicating that \ref psa_storage_create and \ref psa_storage_set_extended are supported */ #define PSA_STORAGE_SUPPORT_SET_EXTENDED (1 << 0) /** \brief PSA storage specific error codes */ #define PSA_ERROR_INVALID_SIGNATURE ((psa_status_t)-149) #define PSA_ERROR_DATA_CORRUPT ((psa_status_t)-152) #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 */ #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 */ /** * \brief create a new or modify an existing uid/value pair * * \param[in] uid the identifier for the data * \param[in] data_length The size in bytes of the data in p_data * \param[in] p_data A buffer containing the data * \param[in] create_flags The flags that the data will be stored with * * \return A status indicating the success/failure of the operation * * \retval #PSA_SUCCESS The operation completed successfully * \retval #PSA_ERROR_NOT_PERMITTED The operation failed because the provided uid value was already created with PSA_STORAGE_WRITE_ONCE_FLAG * \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 * \retval #PSA_ERROR_INSUFFICIENT_STORAGE The operation failed because there was insufficient space on the storage medium * \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error) * \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(p_data) * is invalid, for example is NULL or references memory the caller cannot access */ psa_status_t psa_its_set(psa_storage_uid_t uid, uint32_t data_length, const void *p_data, psa_storage_create_flags_t create_flags); /** * \brief Retrieve the value associated with a provided uid * * \param[in] uid The uid value * \param[in] data_offset The starting offset of the data requested * \param[in] data_length the amount of data requested (and the minimum allocated size of the p_data buffer) * \param[out] p_data The buffer where the data will be placed upon successful completion * \param[out] p_data_length The amount of data returned in the p_data buffer * * * \return A status indicating the success/failure of the operation * * \retval #PSA_SUCCESS The operation completed successfully * \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided uid value was not found in the storage * \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error) * \retval #PSA_ERROR_DATA_CORRUPT The operation failed because stored data has been corrupted * \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(p_data, p_data_length) * is invalid. For example is NULL or references memory the caller cannot access. * In addition, this can also happen if an invalid offset was provided. */ psa_status_t psa_its_get(psa_storage_uid_t uid, uint32_t data_offset, uint32_t data_length, void *p_data, size_t *p_data_length ); /** * \brief Retrieve the metadata about the provided uid * * \param[in] uid The uid value * \param[out] p_info A pointer to the psa_storage_info_t struct that will be populated with the metadata * * \return A status indicating the success/failure of the operation * * \retval #PSA_SUCCESS The operation completed successfully * \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided uid value was not found in the storage * \retval #PSA_ERROR_DATA_CORRUPT The operation failed because stored data has been corrupted * \retval #PSA_ERROR_INVALID_ARGUMENT The operation failed because one of the provided pointers(p_info) * is invalid, for example is NULL or references memory the caller cannot access */ psa_status_t psa_its_get_info(psa_storage_uid_t uid, struct psa_storage_info_t *p_info); /** * \brief Remove the provided key and its associated data from the storage * * \param[in] uid The uid value * * \return A status indicating the success/failure of the operation * * \retval #PSA_SUCCESS The operation completed successfully * \retval #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided key value was not found in the storage * \retval #PSA_ERROR_NOT_PERMITTED The operation failed because the provided key value was created with PSA_STORAGE_WRITE_ONCE_FLAG * \retval #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error) */ psa_status_t psa_its_remove(psa_storage_uid_t uid); #ifdef __cplusplus } #endif #endif /* PSA_CRYPTO_ITS_H */