mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-23 03:25:38 +01:00
374 lines
15 KiB
C
374 lines
15 KiB
C
/*
|
|
* Functions to delegate cryptographic operations to an available
|
|
* and appropriate accelerator.
|
|
* Warning: This file will be auto-generated in the future.
|
|
*/
|
|
/* 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.
|
|
*/
|
|
|
|
#include "psa_crypto_core.h"
|
|
#include "psa_crypto_driver_wrappers.h"
|
|
#include "mbedtls/platform.h"
|
|
|
|
#if defined(MBEDTLS_PSA_CRYPTO_DRIVERS)
|
|
|
|
/* Include test driver definition when running tests */
|
|
#if defined(PSA_CRYPTO_DRIVER_TEST)
|
|
#ifndef PSA_CRYPTO_DRIVER_PRESENT
|
|
#define PSA_CRYPTO_DRIVER_PRESENT
|
|
#endif
|
|
#ifndef PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
|
|
#define PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
|
|
#endif
|
|
#include "test/drivers/test_driver.h"
|
|
#endif /* PSA_CRYPTO_DRIVER_TEST */
|
|
|
|
/* Repeat above block for each JSON-declared driver during autogeneration */
|
|
|
|
#endif /* MBEDTLS_PSA_CRYPTO_DRIVERS */
|
|
|
|
/* Support the 'old' SE interface when asked to */
|
|
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
|
|
/* PSA_CRYPTO_DRIVER_PRESENT is defined when either a new-style or old-style
|
|
* SE driver is present, to avoid unused argument errors at compile time. */
|
|
#ifndef PSA_CRYPTO_DRIVER_PRESENT
|
|
#define PSA_CRYPTO_DRIVER_PRESENT
|
|
#endif
|
|
#include "psa_crypto_se.h"
|
|
#endif
|
|
|
|
/* Start delegation functions */
|
|
psa_status_t psa_driver_wrapper_sign_hash( psa_key_slot_t *slot,
|
|
psa_algorithm_t alg,
|
|
const uint8_t *hash,
|
|
size_t hash_length,
|
|
uint8_t *signature,
|
|
size_t signature_size,
|
|
size_t *signature_length )
|
|
{
|
|
#if defined(PSA_CRYPTO_DRIVER_PRESENT)
|
|
/* Try dynamically-registered SE interface first */
|
|
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
|
|
const psa_drv_se_t *drv;
|
|
psa_drv_se_context_t *drv_context;
|
|
|
|
if( psa_get_se_driver( slot->attr.lifetime, &drv, &drv_context ) )
|
|
{
|
|
if( drv->asymmetric == NULL ||
|
|
drv->asymmetric->p_sign == NULL )
|
|
{
|
|
/* Key is defined in SE, but we have no way to exercise it */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
}
|
|
return( drv->asymmetric->p_sign( drv_context,
|
|
slot->data.se.slot_number,
|
|
alg,
|
|
hash, hash_length,
|
|
signature, signature_size,
|
|
signature_length ) );
|
|
}
|
|
#endif /* PSA_CRYPTO_SE_C */
|
|
|
|
/* Then try accelerator API */
|
|
#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
|
|
psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
|
|
psa_key_location_t location = PSA_KEY_LIFETIME_GET_LOCATION(slot->attr.lifetime);
|
|
psa_key_attributes_t attributes = {
|
|
.core = slot->attr
|
|
};
|
|
|
|
switch( location )
|
|
{
|
|
case PSA_KEY_LOCATION_LOCAL_STORAGE:
|
|
/* Key is stored in the slot in export representation, so
|
|
* cycle through all known transparent accelerators */
|
|
#if defined(PSA_CRYPTO_DRIVER_TEST)
|
|
status = test_transparent_signature_sign_hash( &attributes,
|
|
slot->data.key.data,
|
|
slot->data.key.bytes,
|
|
alg,
|
|
hash,
|
|
hash_length,
|
|
signature,
|
|
signature_size,
|
|
signature_length );
|
|
/* Declared with fallback == true */
|
|
if( status != PSA_ERROR_NOT_SUPPORTED )
|
|
return( status );
|
|
#endif /* PSA_CRYPTO_DRIVER_TEST */
|
|
/* Fell through, meaning no accelerator supports this operation */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
/* Add cases for opaque driver here */
|
|
#if defined(PSA_CRYPTO_DRIVER_TEST)
|
|
case PSA_CRYPTO_TEST_DRIVER_LIFETIME:
|
|
return( test_opaque_signature_sign_hash( &attributes,
|
|
slot->data.key.data,
|
|
slot->data.key.bytes,
|
|
alg,
|
|
hash,
|
|
hash_length,
|
|
signature,
|
|
signature_size,
|
|
signature_length ) );
|
|
#endif /* PSA_CRYPTO_DRIVER_TEST */
|
|
default:
|
|
/* Key is declared with a lifetime not known to us */
|
|
return( status );
|
|
}
|
|
#else /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
|
|
#else /* PSA_CRYPTO_DRIVER_PRESENT */
|
|
(void)slot;
|
|
(void)alg;
|
|
(void)hash;
|
|
(void)hash_length;
|
|
(void)signature;
|
|
(void)signature_size;
|
|
(void)signature_length;
|
|
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
#endif /* PSA_CRYPTO_DRIVER_PRESENT */
|
|
}
|
|
|
|
psa_status_t psa_driver_wrapper_verify_hash( psa_key_slot_t *slot,
|
|
psa_algorithm_t alg,
|
|
const uint8_t *hash,
|
|
size_t hash_length,
|
|
const uint8_t *signature,
|
|
size_t signature_length )
|
|
{
|
|
#if defined(PSA_CRYPTO_DRIVER_PRESENT)
|
|
/* Try dynamically-registered SE interface first */
|
|
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
|
|
const psa_drv_se_t *drv;
|
|
psa_drv_se_context_t *drv_context;
|
|
|
|
if( psa_get_se_driver( slot->attr.lifetime, &drv, &drv_context ) )
|
|
{
|
|
if( drv->asymmetric == NULL ||
|
|
drv->asymmetric->p_verify == NULL )
|
|
{
|
|
/* Key is defined in SE, but we have no way to exercise it */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
}
|
|
return( drv->asymmetric->p_verify( drv_context,
|
|
slot->data.se.slot_number,
|
|
alg,
|
|
hash, hash_length,
|
|
signature, signature_length ) );
|
|
}
|
|
#endif /* PSA_CRYPTO_SE_C */
|
|
|
|
/* Then try accelerator API */
|
|
#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
|
|
psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
|
|
psa_key_location_t location = PSA_KEY_LIFETIME_GET_LOCATION(slot->attr.lifetime);
|
|
psa_key_attributes_t attributes = {
|
|
.core = slot->attr
|
|
};
|
|
|
|
switch( location )
|
|
{
|
|
case PSA_KEY_LOCATION_LOCAL_STORAGE:
|
|
/* Key is stored in the slot in export representation, so
|
|
* cycle through all known transparent accelerators */
|
|
#if defined(PSA_CRYPTO_DRIVER_TEST)
|
|
status = test_transparent_signature_verify_hash( &attributes,
|
|
slot->data.key.data,
|
|
slot->data.key.bytes,
|
|
alg,
|
|
hash,
|
|
hash_length,
|
|
signature,
|
|
signature_length );
|
|
/* Declared with fallback == true */
|
|
if( status != PSA_ERROR_NOT_SUPPORTED )
|
|
return( status );
|
|
#endif /* PSA_CRYPTO_DRIVER_TEST */
|
|
/* Fell through, meaning no accelerator supports this operation */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
/* Add cases for opaque driver here */
|
|
#if defined(PSA_CRYPTO_DRIVER_TEST)
|
|
case PSA_CRYPTO_TEST_DRIVER_LIFETIME:
|
|
return( test_opaque_signature_verify_hash( &attributes,
|
|
slot->data.key.data,
|
|
slot->data.key.bytes,
|
|
alg,
|
|
hash,
|
|
hash_length,
|
|
signature,
|
|
signature_length ) );
|
|
#endif /* PSA_CRYPTO_DRIVER_TEST */
|
|
default:
|
|
/* Key is declared with a lifetime not known to us */
|
|
return( status );
|
|
}
|
|
#else /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
|
|
#else /* PSA_CRYPTO_DRIVER_PRESENT */
|
|
(void)slot;
|
|
(void)alg;
|
|
(void)hash;
|
|
(void)hash_length;
|
|
(void)signature;
|
|
(void)signature_length;
|
|
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
#endif /* PSA_CRYPTO_DRIVER_PRESENT */
|
|
}
|
|
|
|
#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
|
|
/** Calculate the size to allocate for buffering a key with given attributes.
|
|
*
|
|
* This function provides a way to get the expected size for storing a key with
|
|
* the given attributes. This will be the size of the export representation for
|
|
* cleartext keys, and a driver-defined size for keys stored by opaque drivers.
|
|
*
|
|
* \param[in] attributes The key attribute structure of the key to store.
|
|
* \param[out] expected_size On success, a byte size large enough to contain
|
|
* the declared key.
|
|
*
|
|
* \retval #PSA_SUCCESS
|
|
* \retval #PSA_ERROR_NOT_SUPPORTED
|
|
*/
|
|
static psa_status_t get_expected_key_size( const psa_key_attributes_t *attributes,
|
|
size_t *expected_size )
|
|
{
|
|
size_t buffer_size = 0;
|
|
if( PSA_KEY_LIFETIME_GET_LOCATION( attributes->core.lifetime ) == PSA_KEY_LOCATION_LOCAL_STORAGE )
|
|
{
|
|
buffer_size = PSA_KEY_EXPORT_MAX_SIZE( attributes->core.type,
|
|
attributes->core.bits );
|
|
|
|
if( buffer_size == 0 )
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
|
|
*expected_size = buffer_size;
|
|
return( PSA_SUCCESS );
|
|
}
|
|
else
|
|
{
|
|
/* TBD: opaque driver support: need to calculate size through a
|
|
* driver-defined size function, since the size of an opaque (wrapped)
|
|
* key will be different for each implementation. */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
}
|
|
}
|
|
#endif /* PSA_CRYPTO_DRIVER_PRESENT */
|
|
|
|
psa_status_t psa_driver_wrapper_generate_key( const psa_key_attributes_t *attributes,
|
|
psa_key_slot_t *slot )
|
|
{
|
|
#if defined(PSA_CRYPTO_DRIVER_PRESENT)
|
|
/* Try dynamically-registered SE interface first */
|
|
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
|
|
const psa_drv_se_t *drv;
|
|
psa_drv_se_context_t *drv_context;
|
|
|
|
if( psa_get_se_driver( slot->attr.lifetime, &drv, &drv_context ) )
|
|
{
|
|
size_t pubkey_length = 0; /* We don't support this feature yet */
|
|
if( drv->key_management == NULL ||
|
|
drv->key_management->p_generate == NULL )
|
|
{
|
|
/* Key is defined as being in SE, but we have no way to generate it */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
}
|
|
return( drv->key_management->p_generate(
|
|
drv_context,
|
|
slot->data.se.slot_number, attributes,
|
|
NULL, 0, &pubkey_length ) );
|
|
}
|
|
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
|
|
|
|
/* Then try accelerator API */
|
|
#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
|
|
psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
|
|
psa_key_location_t location = PSA_KEY_LIFETIME_GET_LOCATION(slot->attr.lifetime);
|
|
size_t export_size = 0;
|
|
|
|
status = get_expected_key_size( attributes, &export_size );
|
|
if( status != PSA_SUCCESS )
|
|
return( status );
|
|
|
|
slot->data.key.data = mbedtls_calloc(1, export_size);
|
|
if( slot->data.key.data == NULL )
|
|
return( PSA_ERROR_INSUFFICIENT_MEMORY );
|
|
slot->data.key.bytes = export_size;
|
|
|
|
switch( location )
|
|
{
|
|
case PSA_KEY_LOCATION_LOCAL_STORAGE:
|
|
/* Key is stored in the slot in export representation, so
|
|
* cycle through all known transparent accelerators */
|
|
|
|
/* Transparent drivers are limited to generating asymmetric keys */
|
|
if( ! PSA_KEY_TYPE_IS_ASYMMETRIC( slot->attr.type ) )
|
|
{
|
|
status = PSA_ERROR_NOT_SUPPORTED;
|
|
break;
|
|
}
|
|
#if defined(PSA_CRYPTO_DRIVER_TEST)
|
|
status = test_transparent_generate_key( attributes,
|
|
slot->data.key.data,
|
|
slot->data.key.bytes,
|
|
&slot->data.key.bytes );
|
|
/* Declared with fallback == true */
|
|
if( status != PSA_ERROR_NOT_SUPPORTED )
|
|
break;
|
|
#endif /* PSA_CRYPTO_DRIVER_TEST */
|
|
/* Fell through, meaning no accelerator supports this operation */
|
|
status = PSA_ERROR_NOT_SUPPORTED;
|
|
break;
|
|
/* Add cases for opaque driver here */
|
|
#if defined(PSA_CRYPTO_DRIVER_TEST)
|
|
case PSA_CRYPTO_TEST_DRIVER_LIFETIME:
|
|
status = test_opaque_generate_key( attributes,
|
|
slot->data.key.data,
|
|
slot->data.key.bytes,
|
|
&slot->data.key.bytes );
|
|
break;
|
|
#endif /* PSA_CRYPTO_DRIVER_TEST */
|
|
default:
|
|
/* Key is declared with a lifetime not known to us */
|
|
status = PSA_ERROR_INVALID_ARGUMENT;
|
|
break;
|
|
}
|
|
|
|
if( status != PSA_SUCCESS )
|
|
{
|
|
/* free allocated buffer */
|
|
mbedtls_free( slot->data.key.data );
|
|
slot->data.key.data = NULL;
|
|
slot->data.key.bytes = 0;
|
|
}
|
|
|
|
return( status );
|
|
#else /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
|
|
#else /* PSA_CRYPTO_DRIVER_PRESENT */
|
|
(void) attributes;
|
|
(void) slot;
|
|
|
|
return( PSA_ERROR_NOT_SUPPORTED );
|
|
#endif /* PSA_CRYPTO_DRIVER_PRESENT */
|
|
}
|
|
|
|
/* End of automatically generated file. */
|