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/**
* \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 TLS.
*
* \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 OR GPL-2.0-or-later
*/
#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 whether a 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);
}
/** 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 \emptydescription
* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
* \retval #PSA_ERROR_STORAGE_FAILURE \emptydescription
* \retval #PSA_ERROR_DATA_INVALID \emptydescription
* \retval #PSA_ERROR_DATA_CORRUPT \emptydescription
* \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 <multipart-operations>\`, 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 \emptydescription
* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
* \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);
/** \addtogroup attributes
* @{
*/
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
/** Custom Diffie-Hellman group.
*
* Mbed TLS does not support custom DH groups.
*
* \deprecated This value is not useful, so this macro will be removed in
* a future version of the library.
*/
#define PSA_DH_FAMILY_CUSTOM \
((psa_dh_family_t) MBEDTLS_DEPRECATED_NUMERIC_CONSTANT(0x7e))
/**
* \brief Set domain parameters for a key.
*
* \deprecated Mbed TLS no longer supports any domain parameters.
* This function only does the equivalent of
* psa_set_key_type() and will be removed in a future version
* of the library.
*
* \param[in,out] attributes Attribute structure where \p type will be set.
* \param type Key type (a \c PSA_KEY_TYPE_XXX value).
* \param[in] data Ignored.
* \param data_length Must be 0.
*
* \retval #PSA_SUCCESS \emptydescription
* \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription
*/
static inline psa_status_t MBEDTLS_DEPRECATED psa_set_key_domain_parameters(
psa_key_attributes_t *attributes,
psa_key_type_t type, const uint8_t *data, size_t data_length)
{
(void) data;
if (data_length != 0) {
return PSA_ERROR_NOT_SUPPORTED;
}
psa_set_key_type(attributes, type);
return PSA_SUCCESS;
}
/**
* \brief Get domain parameters for a key.
*
* \deprecated Mbed TLS no longer supports any domain parameters.
* This function alwaya has an empty output and will be
* removed in a future version of the library.
* \param[in] attributes Ignored.
* \param[out] data Ignored.
* \param data_size Ignored.
* \param[out] data_length Set to 0.
*
* \retval #PSA_SUCCESS \emptydescription
*/
static inline psa_status_t MBEDTLS_DEPRECATED psa_get_key_domain_parameters(
const psa_key_attributes_t *attributes,
uint8_t *data, size_t data_size, size_t *data_length)
{
(void) attributes;
(void) data;
(void) data_size;
*data_length = 0;
return PSA_SUCCESS;
}
/** Safe output buffer size for psa_get_key_domain_parameters().
*
*/
#define PSA_KEY_DOMAIN_PARAMETERS_SIZE(key_type, key_bits) \
MBEDTLS_DEPRECATED_NUMERIC_CONSTANT(1u)
#endif /* MBEDTLS_DEPRECATED_REMOVED */
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_COMPAT_H */
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