/** * \file psa/crypto_compat.h * * \brief PSA cryptography module: Backward compatibility aliases * * This header declares alternative names for macro and functions. * New application code should not use these names. * These names may be removed in a future version of Mbed Crypto. * * \note This file may not be included directly. Applications must * include psa/crypto.h. */ /* * 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_COMPAT_H #define PSA_CRYPTO_COMPAT_H #ifdef __cplusplus extern "C" { #endif /* * To support both openless APIs and psa_open_key() temporarily, define * psa_key_handle_t to be equal to mbedtls_svc_key_id_t. Do not mark the * type and its utility macros and functions deprecated yet. This will be done * in a subsequent phase. */ typedef mbedtls_svc_key_id_t psa_key_handle_t; #define PSA_KEY_HANDLE_INIT MBEDTLS_SVC_KEY_ID_INIT /** Check wether an handle is null. * * \param handle Handle * * \return Non-zero if the handle is null, zero otherwise. */ static inline int psa_key_handle_is_null( psa_key_handle_t handle ) { return( mbedtls_svc_key_id_is_null( handle ) ); } #if !defined(MBEDTLS_DEPRECATED_REMOVED) /* * Mechanism for declaring deprecated values */ #if defined(MBEDTLS_DEPRECATED_WARNING) && !defined(MBEDTLS_PSA_DEPRECATED) #define MBEDTLS_PSA_DEPRECATED __attribute__((deprecated)) #else #define MBEDTLS_PSA_DEPRECATED #endif typedef MBEDTLS_PSA_DEPRECATED size_t mbedtls_deprecated_size_t; typedef MBEDTLS_PSA_DEPRECATED psa_status_t mbedtls_deprecated_psa_status_t; typedef MBEDTLS_PSA_DEPRECATED psa_key_usage_t mbedtls_deprecated_psa_key_usage_t; typedef MBEDTLS_PSA_DEPRECATED psa_ecc_family_t mbedtls_deprecated_psa_ecc_family_t; typedef MBEDTLS_PSA_DEPRECATED psa_dh_family_t mbedtls_deprecated_psa_dh_family_t; typedef MBEDTLS_PSA_DEPRECATED psa_ecc_family_t psa_ecc_curve_t; typedef MBEDTLS_PSA_DEPRECATED psa_dh_family_t psa_dh_group_t; typedef MBEDTLS_PSA_DEPRECATED psa_algorithm_t mbedtls_deprecated_psa_algorithm_t; #define PSA_KEY_TYPE_GET_CURVE PSA_KEY_TYPE_ECC_GET_FAMILY #define PSA_KEY_TYPE_GET_GROUP PSA_KEY_TYPE_DH_GET_FAMILY #define MBEDTLS_DEPRECATED_CONSTANT( type, value ) \ ( (mbedtls_deprecated_##type) ( value ) ) /* * Deprecated PSA Crypto error code definitions (PSA Crypto API <= 1.0 beta2) */ #define PSA_ERROR_UNKNOWN_ERROR \ MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_GENERIC_ERROR ) #define PSA_ERROR_OCCUPIED_SLOT \ MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_ALREADY_EXISTS ) #define PSA_ERROR_EMPTY_SLOT \ MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_DOES_NOT_EXIST ) #define PSA_ERROR_INSUFFICIENT_CAPACITY \ MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_INSUFFICIENT_DATA ) #define PSA_ERROR_TAMPERING_DETECTED \ MBEDTLS_DEPRECATED_CONSTANT( psa_status_t, PSA_ERROR_CORRUPTION_DETECTED ) /* * Deprecated PSA Crypto numerical encodings (PSA Crypto API <= 1.0 beta3) */ #define PSA_KEY_USAGE_SIGN \ MBEDTLS_DEPRECATED_CONSTANT( psa_key_usage_t, PSA_KEY_USAGE_SIGN_HASH ) #define PSA_KEY_USAGE_VERIFY \ MBEDTLS_DEPRECATED_CONSTANT( psa_key_usage_t, PSA_KEY_USAGE_VERIFY_HASH ) /* * Deprecated PSA Crypto size calculation macros (PSA Crypto API <= 1.0 beta3) */ #define PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_SIGNATURE_MAX_SIZE ) #define PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE( key_type, key_bits, alg ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_SIGN_OUTPUT_SIZE( key_type, key_bits, alg ) ) #define PSA_KEY_EXPORT_MAX_SIZE( key_type, key_bits ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_EXPORT_KEY_OUTPUT_SIZE( key_type, key_bits ) ) #define PSA_BLOCK_CIPHER_BLOCK_SIZE( type ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_BLOCK_CIPHER_BLOCK_LENGTH( type ) ) #define PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE ) #define PSA_HASH_SIZE( alg ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_HASH_LENGTH( alg ) ) #define PSA_MAC_FINAL_SIZE( key_type, key_bits, alg ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_MAC_LENGTH( key_type, key_bits, alg ) ) #define PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN \ MBEDTLS_DEPRECATED_CONSTANT( size_t, PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE ) /* * Deprecated PSA Crypto function names (PSA Crypto API <= 1.0 beta3) */ MBEDTLS_PSA_DEPRECATED static inline psa_status_t psa_asymmetric_sign( psa_key_handle_t key, psa_algorithm_t alg, const uint8_t *hash, size_t hash_length, uint8_t *signature, size_t signature_size, size_t *signature_length ) { return psa_sign_hash( key, alg, hash, hash_length, signature, signature_size, signature_length ); } MBEDTLS_PSA_DEPRECATED static inline psa_status_t psa_asymmetric_verify( psa_key_handle_t key, psa_algorithm_t alg, const uint8_t *hash, size_t hash_length, const uint8_t *signature, size_t signature_length ) { return psa_verify_hash( key, alg, hash, hash_length, signature, signature_length ); } /* * Size-specific elliptic curve families. */ #define PSA_ECC_CURVE_SECP160K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 ) #define PSA_ECC_CURVE_SECP192K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 ) #define PSA_ECC_CURVE_SECP224K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 ) #define PSA_ECC_CURVE_SECP256K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 ) #define PSA_ECC_CURVE_SECP160R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 ) #define PSA_ECC_CURVE_SECP192R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 ) #define PSA_ECC_CURVE_SECP224R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 ) #define PSA_ECC_CURVE_SECP256R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 ) #define PSA_ECC_CURVE_SECP384R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 ) #define PSA_ECC_CURVE_SECP521R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 ) #define PSA_ECC_CURVE_SECP160R2 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R2 ) #define PSA_ECC_CURVE_SECT163K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 ) #define PSA_ECC_CURVE_SECT233K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 ) #define PSA_ECC_CURVE_SECT239K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 ) #define PSA_ECC_CURVE_SECT283K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 ) #define PSA_ECC_CURVE_SECT409K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 ) #define PSA_ECC_CURVE_SECT571K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 ) #define PSA_ECC_CURVE_SECT163R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 ) #define PSA_ECC_CURVE_SECT193R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 ) #define PSA_ECC_CURVE_SECT233R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 ) #define PSA_ECC_CURVE_SECT283R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 ) #define PSA_ECC_CURVE_SECT409R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 ) #define PSA_ECC_CURVE_SECT571R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 ) #define PSA_ECC_CURVE_SECT163R2 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R2 ) #define PSA_ECC_CURVE_SECT193R2 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R2 ) #define PSA_ECC_CURVE_BRAINPOOL_P256R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 ) #define PSA_ECC_CURVE_BRAINPOOL_P384R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 ) #define PSA_ECC_CURVE_BRAINPOOL_P512R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 ) #define PSA_ECC_CURVE_CURVE25519 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_MONTGOMERY ) #define PSA_ECC_CURVE_CURVE448 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_MONTGOMERY ) /* * Curves that changed name due to PSA specification. */ #define PSA_ECC_CURVE_SECP_K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_K1 ) #define PSA_ECC_CURVE_SECP_R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R1 ) #define PSA_ECC_CURVE_SECP_R2 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECP_R2 ) #define PSA_ECC_CURVE_SECT_K1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_K1 ) #define PSA_ECC_CURVE_SECT_R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R1 ) #define PSA_ECC_CURVE_SECT_R2 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_SECT_R2 ) #define PSA_ECC_CURVE_BRAINPOOL_P_R1 \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_BRAINPOOL_P_R1 ) #define PSA_ECC_CURVE_MONTGOMERY \ MBEDTLS_DEPRECATED_CONSTANT( psa_ecc_family_t, PSA_ECC_FAMILY_MONTGOMERY ) /* * Finite-field Diffie-Hellman families. */ #define PSA_DH_GROUP_FFDHE2048 \ MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 ) #define PSA_DH_GROUP_FFDHE3072 \ MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 ) #define PSA_DH_GROUP_FFDHE4096 \ MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 ) #define PSA_DH_GROUP_FFDHE6144 \ MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 ) #define PSA_DH_GROUP_FFDHE8192 \ MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 ) /* * Diffie-Hellman families that changed name due to PSA specification. */ #define PSA_DH_GROUP_RFC7919 \ MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_RFC7919 ) #define PSA_DH_GROUP_CUSTOM \ MBEDTLS_DEPRECATED_CONSTANT( psa_dh_family_t, PSA_DH_FAMILY_CUSTOM ) /* * Deprecated PSA Crypto stream cipher algorithms (PSA Crypto API <= 1.0 beta3) */ #define PSA_ALG_ARC4 \ MBEDTLS_DEPRECATED_CONSTANT( psa_algorithm_t, PSA_ALG_STREAM_CIPHER ) #define PSA_ALG_CHACHA20 \ MBEDTLS_DEPRECATED_CONSTANT( psa_algorithm_t, PSA_ALG_STREAM_CIPHER ) /* * Renamed AEAD tag length macros (PSA Crypto API <= 1.0 beta3) */ #define PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH( aead_alg ) \ MBEDTLS_DEPRECATED_CONSTANT( psa_algorithm_t, PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG( aead_alg ) ) #define PSA_ALG_AEAD_WITH_TAG_LENGTH( aead_alg, tag_length ) \ MBEDTLS_DEPRECATED_CONSTANT( psa_algorithm_t, PSA_ALG_AEAD_WITH_SHORTENED_TAG( aead_alg, tag_length ) ) /* * Deprecated PSA AEAD output size macros (PSA Crypto API <= 1.0 beta3) */ /** The tag size for an AEAD algorithm, in bytes. * * \param alg An AEAD algorithm * (\c PSA_ALG_XXX value such that * #PSA_ALG_IS_AEAD(\p alg) is true). * * \return The tag size for the specified algorithm. * If the AEAD algorithm does not have an identified * tag that can be distinguished from the rest of * the ciphertext, return 0. * If the AEAD algorithm is not recognized, return 0. */ #define PSA_AEAD_TAG_LENGTH_1_ARG( alg ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, \ PSA_ALG_IS_AEAD( alg ) ? \ PSA_ALG_AEAD_GET_TAG_LENGTH( alg ) : \ 0 ) /** The maximum size of the output of psa_aead_encrypt(), in bytes. * * If the size of the ciphertext buffer is at least this large, it is * guaranteed that psa_aead_encrypt() will not fail due to an * insufficient buffer size. Depending on the algorithm, the actual size of * the ciphertext may be smaller. * * \warning This macro may evaluate its arguments multiple times or * zero times, so you should not pass arguments that contain * side effects. * * \param alg An AEAD algorithm * (\c PSA_ALG_XXX value such that * #PSA_ALG_IS_AEAD(\p alg) is true). * \param plaintext_length Size of the plaintext in bytes. * * \return The AEAD ciphertext size for the specified * algorithm. * If the AEAD algorithm is not recognized, return 0. */ #define PSA_AEAD_ENCRYPT_OUTPUT_SIZE_2_ARG( alg, plaintext_length ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, \ PSA_ALG_IS_AEAD( alg ) ? \ (plaintext_length) + PSA_ALG_AEAD_GET_TAG_LENGTH( alg ) : \ 0 ) /** The maximum size of the output of psa_aead_decrypt(), in bytes. * * If the size of the plaintext buffer is at least this large, it is * guaranteed that psa_aead_decrypt() will not fail due to an * insufficient buffer size. Depending on the algorithm, the actual size of * the plaintext may be smaller. * * \warning This macro may evaluate its arguments multiple times or * zero times, so you should not pass arguments that contain * side effects. * * \param alg An AEAD algorithm * (\c PSA_ALG_XXX value such that * #PSA_ALG_IS_AEAD(\p alg) is true). * \param ciphertext_length Size of the plaintext in bytes. * * \return The AEAD ciphertext size for the specified * algorithm. * If the AEAD algorithm is not recognized, return 0. */ #define PSA_AEAD_DECRYPT_OUTPUT_SIZE_2_ARG( alg, ciphertext_length ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, \ PSA_ALG_IS_AEAD( alg ) ? \ (ciphertext_length) - PSA_ALG_AEAD_GET_TAG_LENGTH( alg ) : \ 0 ) /** A sufficient output buffer size for psa_aead_update(). * * If the size of the output buffer is at least this large, it is * guaranteed that psa_aead_update() will not fail due to an * insufficient buffer size. The actual size of the output may be smaller * in any given call. * * \warning This macro may evaluate its arguments multiple times or * zero times, so you should not pass arguments that contain * side effects. * * \param alg An AEAD algorithm * (\c PSA_ALG_XXX value such that * #PSA_ALG_IS_AEAD(\p alg) is true). * \param input_length Size of the input in bytes. * * \return A sufficient output buffer size for the specified * algorithm. * If the AEAD algorithm is not recognized, return 0. */ /* For all the AEAD modes defined in this specification, it is possible * to emit output without delay. However, hardware may not always be * capable of this. So for modes based on a block cipher, allow the * implementation to delay the output until it has a full block. */ #define PSA_AEAD_UPDATE_OUTPUT_SIZE_2_ARG( alg, input_length ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, \ PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER( alg ) ? \ PSA_ROUND_UP_TO_MULTIPLE( PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, (input_length) ) : \ (input_length) ) /** A sufficient ciphertext buffer size for psa_aead_finish(). * * If the size of the ciphertext buffer is at least this large, it is * guaranteed that psa_aead_finish() will not fail due to an * insufficient ciphertext buffer size. The actual size of the output may * be smaller in any given call. * * \param alg An AEAD algorithm * (\c PSA_ALG_XXX value such that * #PSA_ALG_IS_AEAD(\p alg) is true). * * \return A sufficient ciphertext buffer size for the * specified algorithm. * If the AEAD algorithm is not recognized, return 0. */ #define PSA_AEAD_FINISH_OUTPUT_SIZE_1_ARG( alg ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, \ PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER( alg ) ? \ PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE : \ 0 ) /** A sufficient plaintext buffer size for psa_aead_verify(). * * If the size of the plaintext buffer is at least this large, it is * guaranteed that psa_aead_verify() will not fail due to an * insufficient plaintext buffer size. The actual size of the output may * be smaller in any given call. * * \param alg An AEAD algorithm * (\c PSA_ALG_XXX value such that * #PSA_ALG_IS_AEAD(\p alg) is true). * * \return A sufficient plaintext buffer size for the * specified algorithm. * If the AEAD algorithm is not recognized, return 0. */ #define PSA_AEAD_VERIFY_OUTPUT_SIZE_1_ARG( alg ) \ MBEDTLS_DEPRECATED_CONSTANT( size_t, \ PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER( alg ) ? \ PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE : \ 0 ) #endif /* MBEDTLS_DEPRECATED_REMOVED */ /** Open a handle to an existing persistent key. * * Open a handle to a persistent key. A key is persistent if it was created * with a lifetime other than #PSA_KEY_LIFETIME_VOLATILE. A persistent key * always has a nonzero key identifier, set with psa_set_key_id() when * creating the key. Implementations may provide additional pre-provisioned * keys that can be opened with psa_open_key(). Such keys have an application * key identifier in the vendor range, as documented in the description of * #psa_key_id_t. * * The application must eventually close the handle with psa_close_key() or * psa_destroy_key() to release associated resources. If the application dies * without calling one of these functions, the implementation should perform * the equivalent of a call to psa_close_key(). * * Some implementations permit an application to open the same key multiple * times. If this is successful, each call to psa_open_key() will return a * different key handle. * * \note This API is not part of the PSA Cryptography API Release 1.0.0 * specification. It was defined in the 1.0 Beta 3 version of the * specification but was removed in the 1.0.0 released version. This API is * kept for the time being to not break applications relying on it. It is not * deprecated yet but will be in the near future. * * \note Applications that rely on opening a key multiple times will not be * portable to implementations that only permit a single key handle to be * opened. See also :ref:\`key-handles\`. * * * \param key The persistent identifier of the key. * \param[out] handle On success, a handle to the key. * * \retval #PSA_SUCCESS * Success. The application can now use the value of `*handle` * to access the key. * \retval #PSA_ERROR_INSUFFICIENT_MEMORY * The implementation does not have sufficient resources to open the * key. This can be due to reaching an implementation limit on the * number of open keys, the number of open key handles, or available * memory. * \retval #PSA_ERROR_DOES_NOT_EXIST * There is no persistent key with key identifier \p key. * \retval #PSA_ERROR_INVALID_ARGUMENT * \p key is not a valid persistent key identifier. * \retval #PSA_ERROR_NOT_PERMITTED * The specified key exists, but the application does not have the * permission to access it. Note that this specification does not * define any way to create such a key, but it may be possible * through implementation-specific means. * \retval #PSA_ERROR_COMMUNICATION_FAILURE * \retval #PSA_ERROR_CORRUPTION_DETECTED * \retval #PSA_ERROR_STORAGE_FAILURE * \retval #PSA_ERROR_DATA_INVALID * \retval #PSA_ERROR_DATA_CORRUPT * \retval #PSA_ERROR_BAD_STATE * The library has not been previously initialized by psa_crypto_init(). * It is implementation-dependent whether a failure to initialize * results in this error code. */ psa_status_t psa_open_key( mbedtls_svc_key_id_t key, psa_key_handle_t *handle ); /** Close a key handle. * * If the handle designates a volatile key, this will destroy the key material * and free all associated resources, just like psa_destroy_key(). * * If this is the last open handle to a persistent key, then closing the handle * will free all resources associated with the key in volatile memory. The key * data in persistent storage is not affected and can be opened again later * with a call to psa_open_key(). * * Closing the key handle makes the handle invalid, and the key handle * must not be used again by the application. * * \note This API is not part of the PSA Cryptography API Release 1.0.0 * specification. It was defined in the 1.0 Beta 3 version of the * specification but was removed in the 1.0.0 released version. This API is * kept for the time being to not break applications relying on it. It is not * deprecated yet but will be in the near future. * * \note If the key handle was used to set up an active * :ref:\`multipart operation \`, then closing the * key handle can cause the multipart operation to fail. Applications should * maintain the key handle until after the multipart operation has finished. * * \param handle The key handle to close. * If this is \c 0, do nothing and return \c PSA_SUCCESS. * * \retval #PSA_SUCCESS * \p handle was a valid handle or \c 0. It is now closed. * \retval #PSA_ERROR_INVALID_HANDLE * \p handle is not a valid handle nor \c 0. * \retval #PSA_ERROR_COMMUNICATION_FAILURE * \retval #PSA_ERROR_CORRUPTION_DETECTED * \retval #PSA_ERROR_BAD_STATE * The library has not been previously initialized by psa_crypto_init(). * It is implementation-dependent whether a failure to initialize * results in this error code. */ psa_status_t psa_close_key(psa_key_handle_t handle); #ifdef __cplusplus } #endif #endif /* PSA_CRYPTO_COMPAT_H */