mirror of
https://github.com/Mbed-TLS/mbedtls.git
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502 lines
18 KiB
C
502 lines
18 KiB
C
/**
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* \file psa/crypto_struct.h
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*
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* \brief PSA cryptography module: Mbed TLS structured type implementations
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*
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* \note This file may not be included directly. Applications must
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* include psa/crypto.h.
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*
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* This file contains the definitions of some data structures with
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* implementation-specific definitions.
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*
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* In implementations with isolation between the application and the
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* cryptography module, it is expected that the front-end and the back-end
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* would have different versions of this file.
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*
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* <h3>Design notes about multipart operation structures</h3>
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*
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* For multipart operations without driver delegation support, each multipart
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* operation structure contains a `psa_algorithm_t alg` field which indicates
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* which specific algorithm the structure is for. When the structure is not in
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* use, `alg` is 0. Most of the structure consists of a union which is
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* discriminated by `alg`.
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*
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* For multipart operations with driver delegation support, each multipart
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* operation structure contains an `unsigned int id` field indicating which
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* driver got assigned to do the operation. When the structure is not in use,
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* 'id' is 0. The structure contains also a driver context which is the union
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* of the contexts of all drivers able to handle the type of multipart
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* operation.
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*
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* Note that when `alg` or `id` is 0, the content of other fields is undefined.
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* In particular, it is not guaranteed that a freshly-initialized structure
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* is all-zero: we initialize structures to something like `{0, 0}`, which
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* is only guaranteed to initializes the first member of the union;
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* GCC and Clang initialize the whole structure to 0 (at the time of writing),
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* but MSVC and CompCert don't.
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*
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* In Mbed TLS, multipart operation structures live independently from
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* the key. This allows Mbed TLS to free the key objects when destroying
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* a key slot. If a multipart operation needs to remember the key after
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* the setup function returns, the operation structure needs to contain a
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* copy of the key.
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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 OR GPL-2.0-or-later
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*/
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#ifndef PSA_CRYPTO_STRUCT_H
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#define PSA_CRYPTO_STRUCT_H
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#include "mbedtls/private_access.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Include the build-time configuration information header. Here, we do not
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* include `"mbedtls/build_info.h"` directly but `"psa/build_info.h"`, which
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* is basically just an alias to it. This is to ease the maintenance of the
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* TF-PSA-Crypto repository which has a different build system and
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* configuration.
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*/
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#include "psa/build_info.h"
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/* Include the context definition for the compiled-in drivers for the primitive
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* algorithms. */
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#include "psa/crypto_driver_contexts_primitives.h"
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struct psa_hash_operation_s {
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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mbedtls_psa_client_handle_t handle;
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#else
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/** Unique ID indicating which driver got assigned to do the
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* operation. Since driver contexts are driver-specific, swapping
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* drivers halfway through the operation is not supported.
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* ID values are auto-generated in psa_driver_wrappers.h.
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* ID value zero means the context is not valid or not assigned to
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* any driver (i.e. the driver context is not active, in use). */
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unsigned int MBEDTLS_PRIVATE(id);
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psa_driver_hash_context_t MBEDTLS_PRIVATE(ctx);
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#endif
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};
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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#define PSA_HASH_OPERATION_INIT { 0 }
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#else
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#define PSA_HASH_OPERATION_INIT { 0, { 0 } }
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#endif
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static inline struct psa_hash_operation_s psa_hash_operation_init(void)
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{
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const struct psa_hash_operation_s v = PSA_HASH_OPERATION_INIT;
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return v;
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}
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struct psa_cipher_operation_s {
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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mbedtls_psa_client_handle_t handle;
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#else
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/** Unique ID indicating which driver got assigned to do the
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* operation. Since driver contexts are driver-specific, swapping
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* drivers halfway through the operation is not supported.
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* ID values are auto-generated in psa_crypto_driver_wrappers.h
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* ID value zero means the context is not valid or not assigned to
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* any driver (i.e. none of the driver contexts are active). */
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unsigned int MBEDTLS_PRIVATE(id);
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unsigned int MBEDTLS_PRIVATE(iv_required) : 1;
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unsigned int MBEDTLS_PRIVATE(iv_set) : 1;
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uint8_t MBEDTLS_PRIVATE(default_iv_length);
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psa_driver_cipher_context_t MBEDTLS_PRIVATE(ctx);
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#endif
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};
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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#define PSA_CIPHER_OPERATION_INIT { 0 }
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#else
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#define PSA_CIPHER_OPERATION_INIT { 0, 0, 0, 0, { 0 } }
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#endif
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static inline struct psa_cipher_operation_s psa_cipher_operation_init(void)
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{
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const struct psa_cipher_operation_s v = PSA_CIPHER_OPERATION_INIT;
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return v;
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}
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/* Include the context definition for the compiled-in drivers for the composite
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* algorithms. */
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#include "psa/crypto_driver_contexts_composites.h"
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struct psa_mac_operation_s {
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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mbedtls_psa_client_handle_t handle;
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#else
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/** Unique ID indicating which driver got assigned to do the
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* operation. Since driver contexts are driver-specific, swapping
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* drivers halfway through the operation is not supported.
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* ID values are auto-generated in psa_driver_wrappers.h
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* ID value zero means the context is not valid or not assigned to
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* any driver (i.e. none of the driver contexts are active). */
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unsigned int MBEDTLS_PRIVATE(id);
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uint8_t MBEDTLS_PRIVATE(mac_size);
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unsigned int MBEDTLS_PRIVATE(is_sign) : 1;
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psa_driver_mac_context_t MBEDTLS_PRIVATE(ctx);
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#endif
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};
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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#define PSA_MAC_OPERATION_INIT { 0 }
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#else
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#define PSA_MAC_OPERATION_INIT { 0, 0, 0, { 0 } }
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#endif
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static inline struct psa_mac_operation_s psa_mac_operation_init(void)
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{
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const struct psa_mac_operation_s v = PSA_MAC_OPERATION_INIT;
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return v;
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}
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struct psa_aead_operation_s {
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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mbedtls_psa_client_handle_t handle;
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#else
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/** Unique ID indicating which driver got assigned to do the
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* operation. Since driver contexts are driver-specific, swapping
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* drivers halfway through the operation is not supported.
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* ID values are auto-generated in psa_crypto_driver_wrappers.h
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* ID value zero means the context is not valid or not assigned to
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* any driver (i.e. none of the driver contexts are active). */
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unsigned int MBEDTLS_PRIVATE(id);
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psa_algorithm_t MBEDTLS_PRIVATE(alg);
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psa_key_type_t MBEDTLS_PRIVATE(key_type);
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size_t MBEDTLS_PRIVATE(ad_remaining);
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size_t MBEDTLS_PRIVATE(body_remaining);
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unsigned int MBEDTLS_PRIVATE(nonce_set) : 1;
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unsigned int MBEDTLS_PRIVATE(lengths_set) : 1;
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unsigned int MBEDTLS_PRIVATE(ad_started) : 1;
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unsigned int MBEDTLS_PRIVATE(body_started) : 1;
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unsigned int MBEDTLS_PRIVATE(is_encrypt) : 1;
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psa_driver_aead_context_t MBEDTLS_PRIVATE(ctx);
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#endif
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};
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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#define PSA_AEAD_OPERATION_INIT { 0 }
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#else
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#define PSA_AEAD_OPERATION_INIT { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, { 0 } }
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#endif
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static inline struct psa_aead_operation_s psa_aead_operation_init(void)
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{
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const struct psa_aead_operation_s v = PSA_AEAD_OPERATION_INIT;
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return v;
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}
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/* Include the context definition for the compiled-in drivers for the key
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* derivation algorithms. */
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#include "psa/crypto_driver_contexts_key_derivation.h"
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struct psa_key_derivation_s {
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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mbedtls_psa_client_handle_t handle;
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#else
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psa_algorithm_t MBEDTLS_PRIVATE(alg);
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unsigned int MBEDTLS_PRIVATE(can_output_key) : 1;
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size_t MBEDTLS_PRIVATE(capacity);
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psa_driver_key_derivation_context_t MBEDTLS_PRIVATE(ctx);
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#endif
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};
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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#define PSA_KEY_DERIVATION_OPERATION_INIT { 0 }
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#else
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/* This only zeroes out the first byte in the union, the rest is unspecified. */
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#define PSA_KEY_DERIVATION_OPERATION_INIT { 0, 0, 0, { 0 } }
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#endif
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static inline struct psa_key_derivation_s psa_key_derivation_operation_init(
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void)
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{
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const struct psa_key_derivation_s v = PSA_KEY_DERIVATION_OPERATION_INIT;
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return v;
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}
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struct psa_key_production_parameters_s {
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/* Future versions may add other fields in this structure. */
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uint32_t flags;
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uint8_t data[];
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};
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/** The default production parameters for key generation or key derivation.
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*
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* Calling psa_generate_key_ext() or psa_key_derivation_output_key_ext()
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* with `params=PSA_KEY_PRODUCTION_PARAMETERS_INIT` and
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* `params_data_length == 0` is equivalent to
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* calling psa_generate_key() or psa_key_derivation_output_key()
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* respectively.
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*/
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#define PSA_KEY_PRODUCTION_PARAMETERS_INIT { 0 }
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struct psa_key_policy_s {
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psa_key_usage_t MBEDTLS_PRIVATE(usage);
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psa_algorithm_t MBEDTLS_PRIVATE(alg);
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psa_algorithm_t MBEDTLS_PRIVATE(alg2);
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};
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typedef struct psa_key_policy_s psa_key_policy_t;
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#define PSA_KEY_POLICY_INIT { 0, 0, 0 }
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static inline struct psa_key_policy_s psa_key_policy_init(void)
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{
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const struct psa_key_policy_s v = PSA_KEY_POLICY_INIT;
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return v;
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}
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/* The type used internally for key sizes.
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* Public interfaces use size_t, but internally we use a smaller type. */
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typedef uint16_t psa_key_bits_t;
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/* The maximum value of the type used to represent bit-sizes.
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* This is used to mark an invalid key size. */
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#define PSA_KEY_BITS_TOO_LARGE ((psa_key_bits_t) -1)
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/* The maximum size of a key in bits.
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* Currently defined as the maximum that can be represented, rounded down
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* to a whole number of bytes.
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* This is an uncast value so that it can be used in preprocessor
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* conditionals. */
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#define PSA_MAX_KEY_BITS 0xfff8
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struct psa_key_attributes_s {
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#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
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psa_key_slot_number_t MBEDTLS_PRIVATE(slot_number);
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int MBEDTLS_PRIVATE(has_slot_number);
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#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
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psa_key_type_t MBEDTLS_PRIVATE(type);
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psa_key_bits_t MBEDTLS_PRIVATE(bits);
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psa_key_lifetime_t MBEDTLS_PRIVATE(lifetime);
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psa_key_policy_t MBEDTLS_PRIVATE(policy);
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/* This type has a different layout in the client view wrt the
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* service view of the key id, i.e. in service view usually is
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* expected to have MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER defined
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* thus adding an owner field to the standard psa_key_id_t. For
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* implementations with client/service separation, this means the
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* object will be marshalled through a transport channel and
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* interpreted differently at each side of the transport. Placing
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* it at the end of structures allows to interpret the structure
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* at the client without reorganizing the memory layout of the
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* struct
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*/
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mbedtls_svc_key_id_t MBEDTLS_PRIVATE(id);
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};
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#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
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#define PSA_KEY_ATTRIBUTES_MAYBE_SLOT_NUMBER 0, 0,
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#else
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#define PSA_KEY_ATTRIBUTES_MAYBE_SLOT_NUMBER
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#endif
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#define PSA_KEY_ATTRIBUTES_INIT { PSA_KEY_ATTRIBUTES_MAYBE_SLOT_NUMBER \
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PSA_KEY_TYPE_NONE, 0, \
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PSA_KEY_LIFETIME_VOLATILE, \
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PSA_KEY_POLICY_INIT, \
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MBEDTLS_SVC_KEY_ID_INIT }
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static inline struct psa_key_attributes_s psa_key_attributes_init(void)
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{
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const struct psa_key_attributes_s v = PSA_KEY_ATTRIBUTES_INIT;
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return v;
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}
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static inline void psa_set_key_id(psa_key_attributes_t *attributes,
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mbedtls_svc_key_id_t key)
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{
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psa_key_lifetime_t lifetime = attributes->MBEDTLS_PRIVATE(lifetime);
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attributes->MBEDTLS_PRIVATE(id) = key;
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if (PSA_KEY_LIFETIME_IS_VOLATILE(lifetime)) {
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attributes->MBEDTLS_PRIVATE(lifetime) =
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PSA_KEY_LIFETIME_FROM_PERSISTENCE_AND_LOCATION(
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PSA_KEY_LIFETIME_PERSISTENT,
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PSA_KEY_LIFETIME_GET_LOCATION(lifetime));
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}
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}
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static inline mbedtls_svc_key_id_t psa_get_key_id(
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const psa_key_attributes_t *attributes)
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{
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return attributes->MBEDTLS_PRIVATE(id);
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}
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#ifdef MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
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static inline void mbedtls_set_key_owner_id(psa_key_attributes_t *attributes,
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mbedtls_key_owner_id_t owner)
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{
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attributes->MBEDTLS_PRIVATE(id).MBEDTLS_PRIVATE(owner) = owner;
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}
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#endif
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static inline void psa_set_key_lifetime(psa_key_attributes_t *attributes,
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psa_key_lifetime_t lifetime)
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{
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attributes->MBEDTLS_PRIVATE(lifetime) = lifetime;
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if (PSA_KEY_LIFETIME_IS_VOLATILE(lifetime)) {
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#ifdef MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
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attributes->MBEDTLS_PRIVATE(id).MBEDTLS_PRIVATE(key_id) = 0;
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#else
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attributes->MBEDTLS_PRIVATE(id) = 0;
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#endif
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}
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}
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static inline psa_key_lifetime_t psa_get_key_lifetime(
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const psa_key_attributes_t *attributes)
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{
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return attributes->MBEDTLS_PRIVATE(lifetime);
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}
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static inline void psa_extend_key_usage_flags(psa_key_usage_t *usage_flags)
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{
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if (*usage_flags & PSA_KEY_USAGE_SIGN_HASH) {
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*usage_flags |= PSA_KEY_USAGE_SIGN_MESSAGE;
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}
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if (*usage_flags & PSA_KEY_USAGE_VERIFY_HASH) {
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*usage_flags |= PSA_KEY_USAGE_VERIFY_MESSAGE;
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}
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}
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static inline void psa_set_key_usage_flags(psa_key_attributes_t *attributes,
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psa_key_usage_t usage_flags)
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{
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psa_extend_key_usage_flags(&usage_flags);
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attributes->MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(usage) = usage_flags;
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}
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static inline psa_key_usage_t psa_get_key_usage_flags(
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const psa_key_attributes_t *attributes)
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{
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return attributes->MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(usage);
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}
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static inline void psa_set_key_algorithm(psa_key_attributes_t *attributes,
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psa_algorithm_t alg)
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{
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attributes->MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(alg) = alg;
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}
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static inline psa_algorithm_t psa_get_key_algorithm(
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const psa_key_attributes_t *attributes)
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{
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return attributes->MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(alg);
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}
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static inline void psa_set_key_type(psa_key_attributes_t *attributes,
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psa_key_type_t type)
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{
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attributes->MBEDTLS_PRIVATE(type) = type;
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}
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static inline psa_key_type_t psa_get_key_type(
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const psa_key_attributes_t *attributes)
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{
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return attributes->MBEDTLS_PRIVATE(type);
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}
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static inline void psa_set_key_bits(psa_key_attributes_t *attributes,
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size_t bits)
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{
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if (bits > PSA_MAX_KEY_BITS) {
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attributes->MBEDTLS_PRIVATE(bits) = PSA_KEY_BITS_TOO_LARGE;
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} else {
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attributes->MBEDTLS_PRIVATE(bits) = (psa_key_bits_t) bits;
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}
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}
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static inline size_t psa_get_key_bits(
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const psa_key_attributes_t *attributes)
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{
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return attributes->MBEDTLS_PRIVATE(bits);
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}
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/**
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* \brief The context for PSA interruptible hash signing.
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*/
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struct psa_sign_hash_interruptible_operation_s {
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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mbedtls_psa_client_handle_t handle;
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#else
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/** Unique ID indicating which driver got assigned to do the
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* operation. Since driver contexts are driver-specific, swapping
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* drivers halfway through the operation is not supported.
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* ID values are auto-generated in psa_crypto_driver_wrappers.h
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* ID value zero means the context is not valid or not assigned to
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* any driver (i.e. none of the driver contexts are active). */
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unsigned int MBEDTLS_PRIVATE(id);
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psa_driver_sign_hash_interruptible_context_t MBEDTLS_PRIVATE(ctx);
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unsigned int MBEDTLS_PRIVATE(error_occurred) : 1;
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uint32_t MBEDTLS_PRIVATE(num_ops);
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#endif
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};
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|
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#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
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#define PSA_SIGN_HASH_INTERRUPTIBLE_OPERATION_INIT { 0 }
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#else
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#define PSA_SIGN_HASH_INTERRUPTIBLE_OPERATION_INIT { 0, { 0 }, 0, 0 }
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#endif
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|
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static inline struct psa_sign_hash_interruptible_operation_s
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|
psa_sign_hash_interruptible_operation_init(void)
|
|
{
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|
const struct psa_sign_hash_interruptible_operation_s v =
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|
PSA_SIGN_HASH_INTERRUPTIBLE_OPERATION_INIT;
|
|
|
|
return v;
|
|
}
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|
|
|
/**
|
|
* \brief The context for PSA interruptible hash verification.
|
|
*/
|
|
struct psa_verify_hash_interruptible_operation_s {
|
|
#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
|
|
mbedtls_psa_client_handle_t handle;
|
|
#else
|
|
/** Unique ID indicating which driver got assigned to do the
|
|
* operation. Since driver contexts are driver-specific, swapping
|
|
* drivers halfway through the operation is not supported.
|
|
* ID values are auto-generated in psa_crypto_driver_wrappers.h
|
|
* ID value zero means the context is not valid or not assigned to
|
|
* any driver (i.e. none of the driver contexts are active). */
|
|
unsigned int MBEDTLS_PRIVATE(id);
|
|
|
|
psa_driver_verify_hash_interruptible_context_t MBEDTLS_PRIVATE(ctx);
|
|
|
|
unsigned int MBEDTLS_PRIVATE(error_occurred) : 1;
|
|
|
|
uint32_t MBEDTLS_PRIVATE(num_ops);
|
|
#endif
|
|
};
|
|
|
|
#if defined(MBEDTLS_PSA_CRYPTO_CLIENT) && !defined(MBEDTLS_PSA_CRYPTO_C)
|
|
#define PSA_VERIFY_HASH_INTERRUPTIBLE_OPERATION_INIT { 0 }
|
|
#else
|
|
#define PSA_VERIFY_HASH_INTERRUPTIBLE_OPERATION_INIT { 0, { 0 }, 0, 0 }
|
|
#endif
|
|
|
|
static inline struct psa_verify_hash_interruptible_operation_s
|
|
psa_verify_hash_interruptible_operation_init(void)
|
|
{
|
|
const struct psa_verify_hash_interruptible_operation_s v =
|
|
PSA_VERIFY_HASH_INTERRUPTIBLE_OPERATION_INIT;
|
|
|
|
return v;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* PSA_CRYPTO_STRUCT_H */
|