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-/**
- * \file psa/crypto_struct.h
- *
- * \brief PSA cryptography module: Mbed TLS structured type implementations
- *
- * \note This file may not be included directly. Applications must
- * include psa/crypto.h.
- *
- * This file contains the definitions of some data structures with
- * implementation-specific definitions.
- *
- * In implementations with isolation between the application and the
- * cryptography module, it is expected that the front-end and the back-end
- * would have different versions of this file.
- *
- * <h3>Design notes about multipart operation structures</h3>
- *
- * For multipart operations without driver delegation support, each multipart
- * operation structure contains a `psa_algorithm_t alg` field which indicates
- * which specific algorithm the structure is for. When the structure is not in
- * use, `alg` is 0. Most of the structure consists of a union which is
- * discriminated by `alg`.
- *
- * For multipart operations with driver delegation support, each multipart
- * operation structure contains an `unsigned int id` field indicating which
- * driver got assigned to do the operation. When the structure is not in use,
- * 'id' is 0. The structure contains also a driver context which is the union
- * of the contexts of all drivers able to handle the type of multipart
- * operation.
- *
- * Note that when `alg` or `id` is 0, the content of other fields is undefined.
- * In particular, it is not guaranteed that a freshly-initialized structure
- * is all-zero: we initialize structures to something like `{0, 0}`, which
- * is only guaranteed to initializes the first member of the union;
- * GCC and Clang initialize the whole structure to 0 (at the time of writing),
- * but MSVC and CompCert don't.
- *
- * In Mbed TLS, multipart operation structures live independently from
- * the key. This allows Mbed TLS to free the key objects when destroying
- * a key slot. If a multipart operation needs to remember the key after
- * the setup function returns, the operation structure needs to contain a
- * copy of the key.
- */
-/*
- * Copyright The Mbed TLS Contributors
- * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
- */
-
-#ifndef PSA_CRYPTO_STRUCT_H
-#define PSA_CRYPTO_STRUCT_H
-#include "mbedtls/private_access.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Include the Mbed TLS configuration file, the way Mbed TLS does it
- * in each of its header files. */
-#include "mbedtls/build_info.h"
-
-/* Include the context definition for the compiled-in drivers for the primitive
- * algorithms. */
-#include "psa/crypto_driver_contexts_primitives.h"
-
-struct psa_hash_operation_s {
- /** 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_driver_wrappers.h.
- * ID value zero means the context is not valid or not assigned to
- * any driver (i.e. the driver context is not active, in use). */
- unsigned int MBEDTLS_PRIVATE(id);
- psa_driver_hash_context_t MBEDTLS_PRIVATE(ctx);
-};
-
-#define PSA_HASH_OPERATION_INIT { 0, { 0 } }
-static inline struct psa_hash_operation_s psa_hash_operation_init(void)
-{
- const struct psa_hash_operation_s v = PSA_HASH_OPERATION_INIT;
- return v;
-}
-
-struct psa_cipher_operation_s {
- /** 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);
-
- unsigned int MBEDTLS_PRIVATE(iv_required) : 1;
- unsigned int MBEDTLS_PRIVATE(iv_set) : 1;
-
- uint8_t MBEDTLS_PRIVATE(default_iv_length);
-
- psa_driver_cipher_context_t MBEDTLS_PRIVATE(ctx);
-};
-
-#define PSA_CIPHER_OPERATION_INIT { 0, 0, 0, 0, { 0 } }
-static inline struct psa_cipher_operation_s psa_cipher_operation_init(void)
-{
- const struct psa_cipher_operation_s v = PSA_CIPHER_OPERATION_INIT;
- return v;
-}
-
-/* Include the context definition for the compiled-in drivers for the composite
- * algorithms. */
-#include "psa/crypto_driver_contexts_composites.h"
-
-struct psa_mac_operation_s {
- /** 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_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);
- uint8_t MBEDTLS_PRIVATE(mac_size);
- unsigned int MBEDTLS_PRIVATE(is_sign) : 1;
- psa_driver_mac_context_t MBEDTLS_PRIVATE(ctx);
-};
-
-#define PSA_MAC_OPERATION_INIT { 0, 0, 0, { 0 } }
-static inline struct psa_mac_operation_s psa_mac_operation_init(void)
-{
- const struct psa_mac_operation_s v = PSA_MAC_OPERATION_INIT;
- return v;
-}
-
-struct psa_aead_operation_s {
-
- /** 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_algorithm_t MBEDTLS_PRIVATE(alg);
- psa_key_type_t MBEDTLS_PRIVATE(key_type);
-
- size_t MBEDTLS_PRIVATE(ad_remaining);
- size_t MBEDTLS_PRIVATE(body_remaining);
-
- unsigned int MBEDTLS_PRIVATE(nonce_set) : 1;
- unsigned int MBEDTLS_PRIVATE(lengths_set) : 1;
- unsigned int MBEDTLS_PRIVATE(ad_started) : 1;
- unsigned int MBEDTLS_PRIVATE(body_started) : 1;
- unsigned int MBEDTLS_PRIVATE(is_encrypt) : 1;
-
- psa_driver_aead_context_t MBEDTLS_PRIVATE(ctx);
-};
-
-#define PSA_AEAD_OPERATION_INIT { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, { 0 } }
-static inline struct psa_aead_operation_s psa_aead_operation_init(void)
-{
- const struct psa_aead_operation_s v = PSA_AEAD_OPERATION_INIT;
- return v;
-}
-
-/* Include the context definition for the compiled-in drivers for the key
- * derivation algorithms. */
-#include "psa/crypto_driver_contexts_key_derivation.h"
-
-struct psa_key_derivation_s {
- psa_algorithm_t MBEDTLS_PRIVATE(alg);
- unsigned int MBEDTLS_PRIVATE(can_output_key) : 1;
- size_t MBEDTLS_PRIVATE(capacity);
- psa_driver_key_derivation_context_t MBEDTLS_PRIVATE(ctx);
-};
-
-/* This only zeroes out the first byte in the union, the rest is unspecified. */
-#define PSA_KEY_DERIVATION_OPERATION_INIT { 0, 0, 0, { 0 } }
-static inline struct psa_key_derivation_s psa_key_derivation_operation_init(
- void)
-{
- const struct psa_key_derivation_s v = PSA_KEY_DERIVATION_OPERATION_INIT;
- return v;
-}
-
-struct psa_key_policy_s {
- psa_key_usage_t MBEDTLS_PRIVATE(usage);
- psa_algorithm_t MBEDTLS_PRIVATE(alg);
- psa_algorithm_t MBEDTLS_PRIVATE(alg2);
-};
-typedef struct psa_key_policy_s psa_key_policy_t;
-
-#define PSA_KEY_POLICY_INIT { 0, 0, 0 }
-static inline struct psa_key_policy_s psa_key_policy_init(void)
-{
- const struct psa_key_policy_s v = PSA_KEY_POLICY_INIT;
- return v;
-}
-
-/* The type used internally for key sizes.
- * Public interfaces use size_t, but internally we use a smaller type. */
-typedef uint16_t psa_key_bits_t;
-/* The maximum value of the type used to represent bit-sizes.
- * This is used to mark an invalid key size. */
-#define PSA_KEY_BITS_TOO_LARGE ((psa_key_bits_t) -1)
-/* The maximum size of a key in bits.
- * Currently defined as the maximum that can be represented, rounded down
- * to a whole number of bytes.
- * This is an uncast value so that it can be used in preprocessor
- * conditionals. */
-#define PSA_MAX_KEY_BITS 0xfff8
-
-/** A mask of flags that can be stored in key attributes.
- *
- * This type is also used internally to store flags in slots. Internal
- * flags are defined in library/psa_crypto_core.h. Internal flags may have
- * the same value as external flags if they are properly handled during
- * key creation and in psa_get_key_attributes.
- */
-typedef uint16_t psa_key_attributes_flag_t;
-
-#define MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER \
- ((psa_key_attributes_flag_t) 0x0001)
-
-/* A mask of key attribute flags used externally only.
- * Only meant for internal checks inside the library. */
-#define MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY ( \
- MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER | \
- 0)
-
-/* A mask of key attribute flags used both internally and externally.
- * Currently there aren't any. */
-#define MBEDTLS_PSA_KA_MASK_DUAL_USE ( \
- 0)
-
-typedef struct {
- psa_key_type_t MBEDTLS_PRIVATE(type);
- psa_key_bits_t MBEDTLS_PRIVATE(bits);
- psa_key_lifetime_t MBEDTLS_PRIVATE(lifetime);
- mbedtls_svc_key_id_t MBEDTLS_PRIVATE(id);
- psa_key_policy_t MBEDTLS_PRIVATE(policy);
- psa_key_attributes_flag_t MBEDTLS_PRIVATE(flags);
-} psa_core_key_attributes_t;
-
-#define PSA_CORE_KEY_ATTRIBUTES_INIT { PSA_KEY_TYPE_NONE, 0, \
- PSA_KEY_LIFETIME_VOLATILE, \
- MBEDTLS_SVC_KEY_ID_INIT, \
- PSA_KEY_POLICY_INIT, 0 }
-
-struct psa_key_attributes_s {
- psa_core_key_attributes_t MBEDTLS_PRIVATE(core);
-#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
- psa_key_slot_number_t MBEDTLS_PRIVATE(slot_number);
-#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
- void *MBEDTLS_PRIVATE(domain_parameters);
- size_t MBEDTLS_PRIVATE(domain_parameters_size);
-};
-
-#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
-#define PSA_KEY_ATTRIBUTES_INIT { PSA_CORE_KEY_ATTRIBUTES_INIT, 0, NULL, 0 }
-#else
-#define PSA_KEY_ATTRIBUTES_INIT { PSA_CORE_KEY_ATTRIBUTES_INIT, NULL, 0 }
-#endif
-
-static inline struct psa_key_attributes_s psa_key_attributes_init(void)
-{
- const struct psa_key_attributes_s v = PSA_KEY_ATTRIBUTES_INIT;
- return v;
-}
-
-static inline void psa_set_key_id(psa_key_attributes_t *attributes,
- mbedtls_svc_key_id_t key)
-{
- psa_key_lifetime_t lifetime = attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(lifetime);
-
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(id) = key;
-
- if (PSA_KEY_LIFETIME_IS_VOLATILE(lifetime)) {
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(lifetime) =
- PSA_KEY_LIFETIME_FROM_PERSISTENCE_AND_LOCATION(
- PSA_KEY_LIFETIME_PERSISTENT,
- PSA_KEY_LIFETIME_GET_LOCATION(lifetime));
- }
-}
-
-static inline mbedtls_svc_key_id_t psa_get_key_id(
- const psa_key_attributes_t *attributes)
-{
- return attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(id);
-}
-
-#ifdef MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
-static inline void mbedtls_set_key_owner_id(psa_key_attributes_t *attributes,
- mbedtls_key_owner_id_t owner)
-{
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(id).MBEDTLS_PRIVATE(owner) = owner;
-}
-#endif
-
-static inline void psa_set_key_lifetime(psa_key_attributes_t *attributes,
- psa_key_lifetime_t lifetime)
-{
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(lifetime) = lifetime;
- if (PSA_KEY_LIFETIME_IS_VOLATILE(lifetime)) {
-#ifdef MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(id).MBEDTLS_PRIVATE(key_id) = 0;
-#else
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(id) = 0;
-#endif
- }
-}
-
-static inline psa_key_lifetime_t psa_get_key_lifetime(
- const psa_key_attributes_t *attributes)
-{
- return attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(lifetime);
-}
-
-static inline void psa_extend_key_usage_flags(psa_key_usage_t *usage_flags)
-{
- if (*usage_flags & PSA_KEY_USAGE_SIGN_HASH) {
- *usage_flags |= PSA_KEY_USAGE_SIGN_MESSAGE;
- }
-
- if (*usage_flags & PSA_KEY_USAGE_VERIFY_HASH) {
- *usage_flags |= PSA_KEY_USAGE_VERIFY_MESSAGE;
- }
-}
-
-static inline void psa_set_key_usage_flags(psa_key_attributes_t *attributes,
- psa_key_usage_t usage_flags)
-{
- psa_extend_key_usage_flags(&usage_flags);
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(usage) = usage_flags;
-}
-
-static inline psa_key_usage_t psa_get_key_usage_flags(
- const psa_key_attributes_t *attributes)
-{
- return attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(usage);
-}
-
-static inline void psa_set_key_algorithm(psa_key_attributes_t *attributes,
- psa_algorithm_t alg)
-{
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(alg) = alg;
-}
-
-static inline psa_algorithm_t psa_get_key_algorithm(
- const psa_key_attributes_t *attributes)
-{
- return attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(policy).MBEDTLS_PRIVATE(alg);
-}
-
-/* This function is declared in crypto_extra.h, which comes after this
- * header file, but we need the function here, so repeat the declaration. */
-psa_status_t psa_set_key_domain_parameters(psa_key_attributes_t *attributes,
- psa_key_type_t type,
- const uint8_t *data,
- size_t data_length);
-
-static inline void psa_set_key_type(psa_key_attributes_t *attributes,
- psa_key_type_t type)
-{
- if (attributes->MBEDTLS_PRIVATE(domain_parameters) == NULL) {
- /* Common case: quick path */
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(type) = type;
- } else {
- /* Call the bigger function to free the old domain parameters.
- * Ignore any errors which may arise due to type requiring
- * non-default domain parameters, since this function can't
- * report errors. */
- (void) psa_set_key_domain_parameters(attributes, type, NULL, 0);
- }
-}
-
-static inline psa_key_type_t psa_get_key_type(
- const psa_key_attributes_t *attributes)
-{
- return attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(type);
-}
-
-static inline void psa_set_key_bits(psa_key_attributes_t *attributes,
- size_t bits)
-{
- if (bits > PSA_MAX_KEY_BITS) {
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(bits) = PSA_KEY_BITS_TOO_LARGE;
- } else {
- attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(bits) = (psa_key_bits_t) bits;
- }
-}
-
-static inline size_t psa_get_key_bits(
- const psa_key_attributes_t *attributes)
-{
- return attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(bits);
-}
-
-/**
- * \brief The context for PSA interruptible hash signing.
- */
-struct psa_sign_hash_interruptible_operation_s {
- /** 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_sign_hash_interruptible_context_t MBEDTLS_PRIVATE(ctx);
-
- unsigned int MBEDTLS_PRIVATE(error_occurred) : 1;
-
- uint32_t MBEDTLS_PRIVATE(num_ops);
-};
-
-#define PSA_SIGN_HASH_INTERRUPTIBLE_OPERATION_INIT { 0, { 0 }, 0, 0 }
-
-static inline struct psa_sign_hash_interruptible_operation_s
-psa_sign_hash_interruptible_operation_init(void)
-{
- const struct psa_sign_hash_interruptible_operation_s v =
- PSA_SIGN_HASH_INTERRUPTIBLE_OPERATION_INIT;
-
- return v;
-}
-
-/**
- * \brief The context for PSA interruptible hash verification.
- */
-struct psa_verify_hash_interruptible_operation_s {
- /** 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);
-};
-
-#define PSA_VERIFY_HASH_INTERRUPTIBLE_OPERATION_INIT { 0, { 0 }, 0, 0 }
-
-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 */