380 lines
15 KiB
C
380 lines
15 KiB
C
/*
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* Functions to delegate cryptographic operations to an available
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* and appropriate accelerator.
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* Warning: auto-generated file.
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*/
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/* Copyright (C) 2020, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#include "psa_crypto_core.h"
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#include "psa_crypto_driver_wrappers.h"
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#include "mbedtls/platform.h"
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#if defined(MBEDTLS_PSA_CRYPTO_DRIVERS)
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/* Include test driver definition when running tests */
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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#undef PSA_CRYPTO_DRIVER_PRESENT
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#define PSA_CRYPTO_DRIVER_PRESENT
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#undef PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
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#define PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
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#include "drivers/test_driver.h"
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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/* Include driver definition file for each registered driver here */
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#endif /* MBEDTLS_PSA_CRYPTO_DRIVERS */
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/* Support the 'old' SE interface when asked to */
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#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
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#undef PSA_CRYPTO_DRIVER_PRESENT
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#define PSA_CRYPTO_DRIVER_PRESENT
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#include "psa_crypto_se.h"
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#endif
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/* Start delegation functions */
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psa_status_t psa_driver_wrapper_sign_hash( psa_key_slot_t *slot,
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psa_algorithm_t alg,
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const uint8_t *hash,
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size_t hash_length,
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uint8_t *signature,
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size_t signature_size,
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size_t *signature_length )
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{
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#if defined(PSA_CRYPTO_DRIVER_PRESENT)
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/* Try dynamically-registered SE interface first */
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#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
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const psa_drv_se_t *drv;
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psa_drv_se_context_t *drv_context;
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if( psa_get_se_driver( slot->attr.lifetime, &drv, &drv_context ) )
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{
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if( drv->asymmetric == NULL ||
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drv->asymmetric->p_sign == NULL )
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{
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/* Key is defined in SE, but we have no way to exercise it */
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return PSA_ERROR_INVALID_ARGUMENT;
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}
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return( drv->asymmetric->p_sign( drv_context,
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slot->data.se.slot_number,
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alg,
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hash, hash_length,
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signature, signature_size,
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signature_length ) );
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}
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#endif /* PSA_CRYPTO_SE_C */
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/* Then try accelerator API */
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#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
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psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
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psa_key_location_t location = PSA_KEY_LIFETIME_GET_LOCATION(slot->attr.lifetime);
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psa_key_attributes_t attributes = {
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.core = slot->attr
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};
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switch( location )
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{
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case PSA_KEY_LOCATION_LOCAL_STORAGE:
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/* Key is stored in the slot in export representation, so
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* cycle through all known transparent accelerators */
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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status = test_transparent_signature_sign_hash( &attributes,
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slot->data.key.data,
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slot->data.key.bytes,
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alg,
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hash,
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hash_length,
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signature,
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signature_size,
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signature_length );
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/* Declared with fallback == true */
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if( status != PSA_ERROR_NOT_SUPPORTED )
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return status;
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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/* Fell through, meaning no accelerator supports this operation */
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return PSA_ERROR_NOT_SUPPORTED;
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/* Add cases for opaque driver here */
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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case PSA_CRYPTO_TEST_DRIVER_LIFETIME:
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return( test_opaque_signature_sign_hash( &attributes,
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slot->data.key.data,
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slot->data.key.bytes,
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alg,
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hash,
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hash_length,
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signature,
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signature_size,
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signature_length ) );
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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default:
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/* Key is declared with a lifetime not known to us */
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return status;
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}
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#else /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
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return PSA_ERROR_NOT_SUPPORTED;
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#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
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#else /* PSA_CRYPTO_DRIVER_PRESENT */
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(void)slot;
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(void)alg;
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(void)hash;
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(void)hash_length;
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(void)signature;
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(void)signature_size;
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(void)signature_length;
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return PSA_ERROR_NOT_SUPPORTED;
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#endif /* PSA_CRYPTO_DRIVER_PRESENT */
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}
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psa_status_t psa_driver_wrapper_verify_hash( psa_key_slot_t *slot,
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psa_algorithm_t alg,
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const uint8_t *hash,
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size_t hash_length,
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const uint8_t *signature,
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size_t signature_length )
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{
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#if defined(PSA_CRYPTO_DRIVER_PRESENT)
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/* Try dynamically-registered SE interface first */
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#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
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const psa_drv_se_t *drv;
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psa_drv_se_context_t *drv_context;
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if( psa_get_se_driver( slot->attr.lifetime, &drv, &drv_context ) )
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{
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if( drv->asymmetric == NULL ||
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drv->asymmetric->p_verify == NULL )
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{
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/* Key is defined in SE, but we have no way to exercise it */
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return PSA_ERROR_INVALID_ARGUMENT;
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}
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return( drv->asymmetric->p_verify( drv_context,
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slot->data.se.slot_number,
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alg,
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hash, hash_length,
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signature, signature_length ) );
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}
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#endif /* PSA_CRYPTO_SE_C */
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/* Then try accelerator API */
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#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
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psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
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psa_key_location_t location = PSA_KEY_LIFETIME_GET_LOCATION(slot->attr.lifetime);
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psa_key_attributes_t attributes = {
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.core = slot->attr
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};
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switch( location )
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{
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case PSA_KEY_LOCATION_LOCAL_STORAGE:
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/* Key is stored in the slot in export representation, so
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* cycle through all known transparent accelerators */
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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status = test_transparent_signature_verify_hash( &attributes,
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slot->data.key.data,
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slot->data.key.bytes,
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alg,
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hash,
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hash_length,
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signature,
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signature_length );
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/* Declared with fallback == true */
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if( status != PSA_ERROR_NOT_SUPPORTED )
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return status;
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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/* Fell through, meaning no accelerator supports this operation */
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return PSA_ERROR_NOT_SUPPORTED;
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/* Add cases for opaque driver here */
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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case PSA_CRYPTO_TEST_DRIVER_LIFETIME:
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return( test_opaque_signature_verify_hash( &attributes,
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slot->data.key.data,
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slot->data.key.bytes,
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alg,
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hash,
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hash_length,
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signature,
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signature_length ) );
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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default:
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/* Key is declared with a lifetime not known to us */
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return status;
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}
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#else /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
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return PSA_ERROR_NOT_SUPPORTED;
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#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
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#else /* PSA_CRYPTO_DRIVER_PRESENT */
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(void)slot;
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(void)alg;
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(void)hash;
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(void)hash_length;
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(void)signature;
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(void)signature_length;
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return PSA_ERROR_NOT_SUPPORTED;
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#endif /* PSA_CRYPTO_DRIVER_PRESENT */
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}
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#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
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static psa_status_t get_expected_key_size( const psa_key_attributes_t *attributes,
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size_t *expected_size )
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{
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if( PSA_KEY_LIFETIME_GET_LOCATION( attributes->core.lifetime ) == PSA_KEY_LOCATION_LOCAL_STORAGE )
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{
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if( PSA_KEY_TYPE_IS_UNSTRUCTURED( attributes->core.type ) )
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{
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*expected_size = PSA_BITS_TO_BYTES( attributes->core.bits );
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return PSA_SUCCESS;
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}
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if( PSA_KEY_TYPE_IS_ECC( attributes->core.type ) )
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{
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if( PSA_KEY_TYPE_IS_KEY_PAIR( attributes->core.type ) )
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{
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*expected_size = PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE( attributes->core.bits );
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return PSA_SUCCESS;
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}
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else
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{
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*expected_size = PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE( attributes->core.bits );
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return PSA_SUCCESS;
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}
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}
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if( PSA_KEY_TYPE_IS_RSA( attributes->core.type ) )
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{
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if( PSA_KEY_TYPE_IS_KEY_PAIR( attributes->core.type ) )
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{
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*expected_size = PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE( attributes->core.bits );
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return PSA_SUCCESS;
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}
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else
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{
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*expected_size = PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE( attributes->core.bits );
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return PSA_SUCCESS;
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}
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}
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return PSA_ERROR_NOT_SUPPORTED;
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}
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else
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{
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/* TBD: opaque driver support, need to calculate size through driver-defined size function */
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return PSA_ERROR_NOT_SUPPORTED;
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}
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}
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#endif /* PSA_CRYPTO_DRIVER_PRESENT */
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psa_status_t psa_driver_wrapper_generate_key( const psa_key_attributes_t *attributes,
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psa_key_slot_t *slot )
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{
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#if defined(PSA_CRYPTO_DRIVER_PRESENT)
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/* Try dynamically-registered SE interface first */
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#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
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const psa_drv_se_t *drv;
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psa_drv_se_context_t *drv_context;
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if( psa_get_se_driver( slot->attr.lifetime, &drv, &drv_context ) )
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{
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size_t pubkey_length = 0; /* We don't support this feature yet */
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if( drv->key_management == NULL ||
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drv->key_management->p_generate == NULL )
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{
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/* Key is defined as being in SE, but we have no way to generate it */
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return PSA_ERROR_NOT_SUPPORTED;
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}
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return( drv->key_management->p_generate(
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drv_context,
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slot->data.se.slot_number, attributes,
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NULL, 0, &pubkey_length ) );
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}
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#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
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/* Then try accelerator API */
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#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
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psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
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psa_key_location_t location = PSA_KEY_LIFETIME_GET_LOCATION(slot->attr.lifetime);
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size_t export_size = 0;
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status = get_expected_key_size( attributes, &export_size );
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if( status != PSA_SUCCESS )
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return status;
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slot->data.key.data = mbedtls_calloc(1, export_size);
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if( slot->data.key.data == NULL )
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return PSA_ERROR_INSUFFICIENT_MEMORY;
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slot->data.key.bytes = export_size;
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switch( location )
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{
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case PSA_KEY_LOCATION_LOCAL_STORAGE:
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/* Key is stored in the slot in export representation, so
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* cycle through all known transparent accelerators */
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/* Transparent drivers are limited to generating asymmetric keys */
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if( ! PSA_KEY_TYPE_IS_ASYMMETRIC( slot->attr.type ) )
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{
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status = PSA_ERROR_NOT_SUPPORTED;
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break;
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}
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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status = test_transparent_generate_key( attributes,
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slot->data.key.data,
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slot->data.key.bytes,
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&slot->data.key.bytes );
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/* Declared with fallback == true */
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if( status != PSA_ERROR_NOT_SUPPORTED )
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break;
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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/* Fell through, meaning no accelerator supports this operation */
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status = PSA_ERROR_NOT_SUPPORTED;
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break;
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/* Add cases for opaque driver here */
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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case PSA_CRYPTO_TEST_DRIVER_LIFETIME:
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status = test_opaque_generate_key( attributes,
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slot->data.key.data,
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slot->data.key.bytes,
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&slot->data.key.bytes );
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break;
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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default:
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/* Key is declared with a lifetime not known to us */
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status = PSA_ERROR_INVALID_ARGUMENT;
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break;
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}
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if( status != PSA_SUCCESS )
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{
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/* free allocated buffer */
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mbedtls_free( slot->data.key.data );
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slot->data.key.data = NULL;
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slot->data.key.bytes = 0;
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}
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return( status );
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#else /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
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return PSA_ERROR_NOT_SUPPORTED;
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#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
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#else /* PSA_CRYPTO_DRIVER_PRESENT */
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(void) attributes;
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(void) slot;
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return PSA_ERROR_NOT_SUPPORTED;
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#endif /* PSA_CRYPTO_DRIVER_PRESENT */
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}
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/* End of automatically generated file. */
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