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			668 lines
		
	
	
	
		
			24 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			668 lines
		
	
	
	
		
			24 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  *  PSA RSA layer on top of Mbed TLS crypto
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|  */
 | |
| /*
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|  *  Copyright The Mbed TLS Contributors
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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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| 
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| #include "common.h"
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| 
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| #if defined(MBEDTLS_PSA_CRYPTO_C)
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| 
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| #include <psa/crypto.h>
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| #include "psa_crypto_core.h"
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| #include "psa_crypto_random_impl.h"
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| #include "psa_crypto_rsa.h"
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| 
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| #include <stdlib.h>
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| #include <string.h>
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| #include "mbedtls/platform.h"
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| #if !defined(MBEDTLS_PLATFORM_C)
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| #define mbedtls_calloc calloc
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| #define mbedtls_free   free
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| #endif
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| 
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| #include <mbedtls/rsa.h>
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| #include <mbedtls/error.h>
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| #include <mbedtls/pk.h>
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| #include <mbedtls/pk_internal.h>
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| 
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| #if ( defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||  \
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|       ( defined(PSA_CRYPTO_DRIVER_TEST) &&                   \
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|         defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_KEY_PAIR) ) )
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| #define BUILTIN_KEY_TYPE_RSA_KEY_PAIR    1
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| #endif
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| 
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| #if ( defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) ||  \
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|       ( defined(PSA_CRYPTO_DRIVER_TEST) &&                   \
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|         defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_PUBLIC_KEY) ) )
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| #define BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY  1
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| #endif
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| 
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| #if ( defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) ||  \
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|       ( defined(PSA_CRYPTO_DRIVER_TEST) &&                   \
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|         defined(MBEDTLS_PSA_ACCEL_ALG_RSA_PKCS1V15_SIGN) &&  \
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|         defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V15) ) )
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| #define BUILTIN_ALG_RSA_PKCS1V15_SIGN  1
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| #endif
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| 
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| #if ( defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) ||  \
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|       ( defined(PSA_CRYPTO_DRIVER_TEST) &&         \
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|         defined(MBEDTLS_PSA_ACCEL_ALG_RSA_PSS) &&  \
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|         defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V21) ) )
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| #define BUILTIN_ALG_RSA_PSS 1
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| #endif
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| 
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| #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
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|     defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) || \
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|     defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \
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|     defined(BUILTIN_ALG_RSA_PSS) || \
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|     defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
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|     defined(BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
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| 
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| /* Mbed TLS doesn't support non-byte-aligned key sizes (i.e. key sizes
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|  * that are not a multiple of 8) well. For example, there is only
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|  * mbedtls_rsa_get_len(), which returns a number of bytes, and no
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|  * way to return the exact bit size of a key.
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|  * To keep things simple, reject non-byte-aligned key sizes. */
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| static psa_status_t psa_check_rsa_key_byte_aligned(
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|     const mbedtls_rsa_context *rsa) {
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|     mbedtls_mpi n;
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|     psa_status_t status;
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|     mbedtls_mpi_init(&n);
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|     status = mbedtls_to_psa_error(
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|                  mbedtls_rsa_export(rsa, &n, NULL, NULL, NULL, NULL));
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|     if (status == PSA_SUCCESS) {
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|         if (mbedtls_mpi_bitlen(&n) % 8 != 0)
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|             status = PSA_ERROR_NOT_SUPPORTED;
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|     }
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|     mbedtls_mpi_free(&n);
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|     return (status);
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| }
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| 
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| psa_status_t mbedtls_psa_rsa_load_representation(
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|     psa_key_type_t type, const uint8_t *data, size_t data_length,
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|     mbedtls_rsa_context **p_rsa) {
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|     psa_status_t status;
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|     mbedtls_pk_context ctx;
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|     size_t bits;
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|     mbedtls_pk_init(&ctx);
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| 
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|     /* Parse the data. */
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|     if (PSA_KEY_TYPE_IS_KEY_PAIR(type))
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|         status = mbedtls_to_psa_error(
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|                      mbedtls_pk_parse_key(&ctx, data, data_length, NULL, 0));
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|     else
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|         status = mbedtls_to_psa_error(
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|                      mbedtls_pk_parse_public_key(&ctx, data, data_length));
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|     if (status != PSA_SUCCESS)
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|         goto exit;
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| 
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|     /* We have something that the pkparse module recognizes. If it is a
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|      * valid RSA key, store it. */
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|     if (mbedtls_pk_get_type(&ctx) != MBEDTLS_PK_RSA) {
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|         status = PSA_ERROR_INVALID_ARGUMENT;
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|         goto exit;
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|     }
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| 
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|     /* The size of an RSA key doesn't have to be a multiple of 8. Mbed TLS
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|      * supports non-byte-aligned key sizes, but not well. For example,
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|      * mbedtls_rsa_get_len() returns the key size in bytes, not in bits. */
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|     bits = PSA_BYTES_TO_BITS(mbedtls_rsa_get_len(mbedtls_pk_rsa(ctx)));
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|     if (bits > PSA_VENDOR_RSA_MAX_KEY_BITS) {
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|         status = PSA_ERROR_NOT_SUPPORTED;
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|         goto exit;
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|     }
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|     status = psa_check_rsa_key_byte_aligned(mbedtls_pk_rsa(ctx));
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|     if (status != PSA_SUCCESS)
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|         goto exit;
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| 
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|     /* Copy out the pointer to the RSA context, and reset the PK context
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|      * such that pk_free doesn't free the RSA context we just grabbed. */
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|     *p_rsa = mbedtls_pk_rsa(ctx);
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|     ctx.pk_info = NULL;
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| 
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| exit:
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|     mbedtls_pk_free(&ctx);
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|     return (status);
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| }
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| #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) ||
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|         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) ||
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|         * defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN) ||
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|         * defined(BUILTIN_ALG_RSA_PSS) ||
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|         * defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
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|         * defined(BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
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| 
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| #if defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
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|     defined(BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
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| 
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| static psa_status_t rsa_import_key(
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|     const psa_key_attributes_t *attributes,
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|     const uint8_t *data, size_t data_length,
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|     uint8_t *key_buffer, size_t key_buffer_size,
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|     size_t *key_buffer_length, size_t *bits) {
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|     psa_status_t status;
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|     mbedtls_rsa_context *rsa = NULL;
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| 
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|     /* Parse input */
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|     status = mbedtls_psa_rsa_load_representation(attributes->core.type,
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|                                                  data,
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|                                                  data_length,
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|                                                  &rsa);
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|     if (status != PSA_SUCCESS)
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|         goto exit;
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| 
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|     *bits = (psa_key_bits_t) PSA_BYTES_TO_BITS(mbedtls_rsa_get_len(rsa));
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| 
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|     /* Re-export the data to PSA export format, such that we can store export
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|      * representation in the key slot. Export representation in case of RSA is
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|      * the smallest representation that's allowed as input, so a straight-up
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|      * allocation of the same size as the input buffer will be large enough. */
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|     status = mbedtls_psa_rsa_export_key(attributes->core.type,
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|                                         rsa,
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|                                         key_buffer,
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|                                         key_buffer_size,
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|                                         key_buffer_length);
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| exit:
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|     /* Always free the RSA object */
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|     mbedtls_rsa_free(rsa);
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|     mbedtls_free(rsa);
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| 
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|     return (status);
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| }
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| 
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| psa_status_t mbedtls_psa_rsa_export_key(psa_key_type_t type,
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|                                         mbedtls_rsa_context *rsa,
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|                                         uint8_t *data,
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|                                         size_t data_size,
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|                                         size_t *data_length) {
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| #if defined(MBEDTLS_PK_WRITE_C)
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|     int ret;
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|     mbedtls_pk_context pk;
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|     uint8_t *pos = data + data_size;
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| 
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|     mbedtls_pk_init(&pk);
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|     pk.pk_info = &mbedtls_rsa_info;
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|     pk.pk_ctx = rsa;
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| 
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|     /* PSA Crypto API defines the format of an RSA key as a DER-encoded
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|      * representation of the non-encrypted PKCS#1 RSAPrivateKey for a
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|      * private key and of the RFC3279 RSAPublicKey for a public key. */
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|     if (PSA_KEY_TYPE_IS_KEY_PAIR(type))
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|         ret = mbedtls_pk_write_key_der(&pk, data, data_size);
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|     else
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|         ret = mbedtls_pk_write_pubkey(&pos, data, &pk);
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| 
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|     if (ret < 0) {
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|         /* Clean up in case pk_write failed halfway through. */
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|         memset(data, 0, data_size);
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|         return (mbedtls_to_psa_error(ret));
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|     }
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| 
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|     /* The mbedtls_pk_xxx functions write to the end of the buffer.
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|      * Move the data to the beginning and erase remaining data
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|      * at the original location. */
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|     if (2 * (size_t) ret <= data_size) {
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|         memcpy(data, data + data_size - ret, ret);
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|         memset(data + data_size - ret, 0, ret);
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|     } else if ((size_t) ret < data_size) {
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|         memmove(data, data + data_size - ret, ret);
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|         memset(data + ret, 0, data_size - ret);
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|     }
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| 
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|     *data_length = ret;
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|     return (PSA_SUCCESS);
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| #else
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|     (void) type;
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|     (void) rsa;
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|     (void) data;
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|     (void) data_size;
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|     (void) data_length;
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|     return (PSA_ERROR_NOT_SUPPORTED);
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| #endif /* MBEDTLS_PK_WRITE_C */
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| }
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| 
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| static psa_status_t rsa_export_public_key(
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|     const psa_key_attributes_t *attributes,
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|     const uint8_t *key_buffer, size_t key_buffer_size,
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|     uint8_t *data, size_t data_size, size_t *data_length) {
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|     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
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|     mbedtls_rsa_context *rsa = NULL;
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| 
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|     status = mbedtls_psa_rsa_load_representation(
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|                  attributes->core.type, key_buffer, key_buffer_size, &rsa);
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|     if (status != PSA_SUCCESS)
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|         return (status);
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| 
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|     status = mbedtls_psa_rsa_export_key(PSA_KEY_TYPE_RSA_PUBLIC_KEY,
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|                                         rsa,
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|                                         data,
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|                                         data_size,
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|                                         data_length);
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| 
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|     mbedtls_rsa_free(rsa);
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|     mbedtls_free(rsa);
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| 
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|     return (status);
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| }
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| #endif /* defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
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|         * defined(BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
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| 
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| #if defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
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| static psa_status_t psa_rsa_read_exponent(const uint8_t *domain_parameters,
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|                                           size_t domain_parameters_size,
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|                                           int *exponent) {
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|     size_t i;
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|     uint32_t acc = 0;
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| 
 | |
|     if (domain_parameters_size == 0) {
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|         *exponent = 65537;
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|         return (PSA_SUCCESS);
 | |
|     }
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| 
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|     /* Mbed TLS encodes the public exponent as an int. For simplicity, only
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|      * support values that fit in a 32-bit integer, which is larger than
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|      * int on just about every platform anyway. */
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|     if (domain_parameters_size > sizeof(acc))
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|         return (PSA_ERROR_NOT_SUPPORTED);
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|     for (i = 0; i < domain_parameters_size; i++)
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|         acc = (acc << 8) | domain_parameters[i];
 | |
|     if (acc > INT_MAX)
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|         return (PSA_ERROR_NOT_SUPPORTED);
 | |
|     *exponent = acc;
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|     return (PSA_SUCCESS);
 | |
| }
 | |
| 
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| static psa_status_t rsa_generate_key(
 | |
|     const psa_key_attributes_t *attributes,
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|     uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length) {
 | |
|     psa_status_t status;
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|     mbedtls_rsa_context rsa;
 | |
|     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 | |
|     int exponent;
 | |
| 
 | |
|     status = psa_rsa_read_exponent(attributes->domain_parameters,
 | |
|                                    attributes->domain_parameters_size,
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|                                    &exponent);
 | |
|     if (status != PSA_SUCCESS)
 | |
|         return (status);
 | |
| 
 | |
|     mbedtls_rsa_init(&rsa, MBEDTLS_RSA_PKCS_V15, MBEDTLS_MD_NONE);
 | |
|     ret = mbedtls_rsa_gen_key(&rsa,
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|                               mbedtls_psa_get_random,
 | |
|                               MBEDTLS_PSA_RANDOM_STATE,
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|                               (unsigned int)attributes->core.bits,
 | |
|                               exponent);
 | |
|     if (ret != 0)
 | |
|         return (mbedtls_to_psa_error(ret));
 | |
| 
 | |
|     status = mbedtls_psa_rsa_export_key(attributes->core.type,
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|                                         &rsa, key_buffer, key_buffer_size,
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|                                         key_buffer_length);
 | |
|     mbedtls_rsa_free(&rsa);
 | |
| 
 | |
|     return (status);
 | |
| }
 | |
| #endif /* defined(BUILTIN_KEY_TYPE_RSA_KEY_PAIR) */
 | |
| 
 | |
| /****************************************************************/
 | |
| /* Sign/verify hashes */
 | |
| /****************************************************************/
 | |
| 
 | |
| #if defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN) || defined(BUILTIN_ALG_RSA_PSS)
 | |
| 
 | |
| /* Decode the hash algorithm from alg and store the mbedtls encoding in
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|  * md_alg. Verify that the hash length is acceptable. */
 | |
| static psa_status_t psa_rsa_decode_md_type(psa_algorithm_t alg,
 | |
|                                            size_t hash_length,
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|                                            mbedtls_md_type_t *md_alg) {
 | |
|     psa_algorithm_t hash_alg = PSA_ALG_SIGN_GET_HASH(alg);
 | |
|     const mbedtls_md_info_t *md_info = mbedtls_md_info_from_psa(hash_alg);
 | |
|     *md_alg = mbedtls_md_get_type(md_info);
 | |
| 
 | |
|     /* The Mbed TLS RSA module uses an unsigned int for hash length
 | |
|      * parameters. Validate that it fits so that we don't risk an
 | |
|      * overflow later. */
 | |
| #if SIZE_MAX > UINT_MAX
 | |
|     if (hash_length > UINT_MAX)
 | |
|         return (PSA_ERROR_INVALID_ARGUMENT);
 | |
| #endif
 | |
| 
 | |
| #if defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN)
 | |
|     /* For PKCS#1 v1.5 signature, if using a hash, the hash length
 | |
|      * must be correct. */
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|     if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) &&
 | |
|             alg != PSA_ALG_RSA_PKCS1V15_SIGN_RAW) {
 | |
|         if (md_info == NULL)
 | |
|             return (PSA_ERROR_NOT_SUPPORTED);
 | |
|         if (mbedtls_md_get_size(md_info) != hash_length)
 | |
|             return (PSA_ERROR_INVALID_ARGUMENT);
 | |
|     }
 | |
| #endif /* BUILTIN_ALG_RSA_PKCS1V15_SIGN */
 | |
| 
 | |
| #if defined(BUILTIN_ALG_RSA_PSS)
 | |
|     /* PSS requires a hash internally. */
 | |
|     if (PSA_ALG_IS_RSA_PSS(alg)) {
 | |
|         if (md_info == NULL)
 | |
|             return (PSA_ERROR_NOT_SUPPORTED);
 | |
|     }
 | |
| #endif /* BUILTIN_ALG_RSA_PSS */
 | |
| 
 | |
|     return (PSA_SUCCESS);
 | |
| }
 | |
| 
 | |
| static psa_status_t rsa_sign_hash(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     psa_algorithm_t alg, const uint8_t *hash, size_t hash_length,
 | |
|     uint8_t *signature, size_t signature_size, size_t *signature_length) {
 | |
|     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 | |
|     mbedtls_rsa_context *rsa = NULL;
 | |
|     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 | |
|     mbedtls_md_type_t md_alg;
 | |
| 
 | |
|     status = mbedtls_psa_rsa_load_representation(attributes->core.type,
 | |
|                                                  key_buffer,
 | |
|                                                  key_buffer_size,
 | |
|                                                  &rsa);
 | |
|     if (status != PSA_SUCCESS)
 | |
|         return (status);
 | |
| 
 | |
|     status = psa_rsa_decode_md_type(alg, hash_length, &md_alg);
 | |
|     if (status != PSA_SUCCESS)
 | |
|         goto exit;
 | |
| 
 | |
|     if (signature_size < mbedtls_rsa_get_len(rsa)) {
 | |
|         status = PSA_ERROR_BUFFER_TOO_SMALL;
 | |
|         goto exit;
 | |
|     }
 | |
| 
 | |
| #if defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN)
 | |
|     if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg)) {
 | |
|         mbedtls_rsa_set_padding(rsa, MBEDTLS_RSA_PKCS_V15,
 | |
|                                 MBEDTLS_MD_NONE);
 | |
|         ret = mbedtls_rsa_pkcs1_sign(rsa,
 | |
|                                      mbedtls_psa_get_random,
 | |
|                                      MBEDTLS_PSA_RANDOM_STATE,
 | |
|                                      MBEDTLS_RSA_PRIVATE,
 | |
|                                      md_alg,
 | |
|                                      (unsigned int) hash_length,
 | |
|                                      hash,
 | |
|                                      signature);
 | |
|     } else
 | |
| #endif /* BUILTIN_ALG_RSA_PKCS1V15_SIGN */
 | |
| #if defined(BUILTIN_ALG_RSA_PSS)
 | |
|         if (PSA_ALG_IS_RSA_PSS(alg)) {
 | |
|             mbedtls_rsa_set_padding(rsa, MBEDTLS_RSA_PKCS_V21, md_alg);
 | |
|             ret = mbedtls_rsa_rsassa_pss_sign(rsa,
 | |
|                                               mbedtls_psa_get_random,
 | |
|                                               MBEDTLS_PSA_RANDOM_STATE,
 | |
|                                               MBEDTLS_RSA_PRIVATE,
 | |
|                                               MBEDTLS_MD_NONE,
 | |
|                                               (unsigned int) hash_length,
 | |
|                                               hash,
 | |
|                                               signature);
 | |
|         } else
 | |
| #endif /* BUILTIN_ALG_RSA_PSS */
 | |
|         {
 | |
|             status = PSA_ERROR_INVALID_ARGUMENT;
 | |
|             goto exit;
 | |
|         }
 | |
| 
 | |
|     if (ret == 0)
 | |
|         *signature_length = mbedtls_rsa_get_len(rsa);
 | |
|     status = mbedtls_to_psa_error(ret);
 | |
| 
 | |
| exit:
 | |
|     mbedtls_rsa_free(rsa);
 | |
|     mbedtls_free(rsa);
 | |
| 
 | |
|     return (status);
 | |
| }
 | |
| 
 | |
| static psa_status_t rsa_verify_hash(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     psa_algorithm_t alg, const uint8_t *hash, size_t hash_length,
 | |
|     const uint8_t *signature, size_t signature_length) {
 | |
|     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 | |
|     mbedtls_rsa_context *rsa = NULL;
 | |
|     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 | |
|     mbedtls_md_type_t md_alg;
 | |
| 
 | |
|     status = mbedtls_psa_rsa_load_representation(attributes->core.type,
 | |
|                                                  key_buffer,
 | |
|                                                  key_buffer_size,
 | |
|                                                  &rsa);
 | |
|     if (status != PSA_SUCCESS)
 | |
|         goto exit;
 | |
| 
 | |
|     status = psa_rsa_decode_md_type(alg, hash_length, &md_alg);
 | |
|     if (status != PSA_SUCCESS)
 | |
|         goto exit;
 | |
| 
 | |
|     if (signature_length != mbedtls_rsa_get_len(rsa)) {
 | |
|         status = PSA_ERROR_INVALID_SIGNATURE;
 | |
|         goto exit;
 | |
|     }
 | |
| 
 | |
| #if defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN)
 | |
|     if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg)) {
 | |
|         mbedtls_rsa_set_padding(rsa, MBEDTLS_RSA_PKCS_V15,
 | |
|                                 MBEDTLS_MD_NONE);
 | |
|         ret = mbedtls_rsa_pkcs1_verify(rsa,
 | |
|                                        mbedtls_psa_get_random,
 | |
|                                        MBEDTLS_PSA_RANDOM_STATE,
 | |
|                                        MBEDTLS_RSA_PUBLIC,
 | |
|                                        md_alg,
 | |
|                                        (unsigned int) hash_length,
 | |
|                                        hash,
 | |
|                                        signature);
 | |
|     } else
 | |
| #endif /* BUILTIN_ALG_RSA_PKCS1V15_SIGN */
 | |
| #if defined(BUILTIN_ALG_RSA_PSS)
 | |
|         if (PSA_ALG_IS_RSA_PSS(alg)) {
 | |
|             mbedtls_rsa_set_padding(rsa, MBEDTLS_RSA_PKCS_V21, md_alg);
 | |
|             ret = mbedtls_rsa_rsassa_pss_verify(rsa,
 | |
|                                                 mbedtls_psa_get_random,
 | |
|                                                 MBEDTLS_PSA_RANDOM_STATE,
 | |
|                                                 MBEDTLS_RSA_PUBLIC,
 | |
|                                                 MBEDTLS_MD_NONE,
 | |
|                                                 (unsigned int) hash_length,
 | |
|                                                 hash,
 | |
|                                                 signature);
 | |
|         } else
 | |
| #endif /* BUILTIN_ALG_RSA_PSS */
 | |
|         {
 | |
|             status = PSA_ERROR_INVALID_ARGUMENT;
 | |
|             goto exit;
 | |
|         }
 | |
| 
 | |
|     /* Mbed TLS distinguishes "invalid padding" from "valid padding but
 | |
|      * the rest of the signature is invalid". This has little use in
 | |
|      * practice and PSA doesn't report this distinction. */
 | |
|     status = (ret == MBEDTLS_ERR_RSA_INVALID_PADDING) ?
 | |
|              PSA_ERROR_INVALID_SIGNATURE :
 | |
|              mbedtls_to_psa_error(ret);
 | |
| 
 | |
| exit:
 | |
|     mbedtls_rsa_free(rsa);
 | |
|     mbedtls_free(rsa);
 | |
| 
 | |
|     return (status);
 | |
| }
 | |
| 
 | |
| #endif /* defined(BUILTIN_ALG_RSA_PKCS1V15_SIGN) ||
 | |
|         * defined(BUILTIN_ALG_RSA_PSS) */
 | |
| 
 | |
| #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
 | |
|     defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
 | |
| 
 | |
| psa_status_t mbedtls_psa_rsa_import_key(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *data, size_t data_length,
 | |
|     uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     size_t *key_buffer_length, size_t *bits) {
 | |
|     return (rsa_import_key(attributes, data, data_length,
 | |
|                            key_buffer, key_buffer_size,
 | |
|                            key_buffer_length, bits));
 | |
| }
 | |
| 
 | |
| psa_status_t mbedtls_psa_rsa_export_public_key(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     uint8_t *data, size_t data_size, size_t *data_length) {
 | |
|     return (rsa_export_public_key(attributes, key_buffer, key_buffer_size,
 | |
|                                   data, data_size, data_length));
 | |
| }
 | |
| 
 | |
| #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
 | |
|         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
 | |
| 
 | |
| #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
 | |
| psa_status_t mbedtls_psa_rsa_generate_key(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length) {
 | |
|     return (rsa_generate_key(attributes, key_buffer, key_buffer_size,
 | |
|                              key_buffer_length));
 | |
| }
 | |
| #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) */
 | |
| 
 | |
| #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \
 | |
|     defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
 | |
| psa_status_t mbedtls_psa_rsa_sign_hash(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     psa_algorithm_t alg, const uint8_t *hash, size_t hash_length,
 | |
|     uint8_t *signature, size_t signature_size, size_t *signature_length) {
 | |
|     return (rsa_sign_hash(
 | |
|                 attributes,
 | |
|                 key_buffer, key_buffer_size,
 | |
|                 alg, hash, hash_length,
 | |
|                 signature, signature_size, signature_length));
 | |
| }
 | |
| 
 | |
| psa_status_t mbedtls_psa_rsa_verify_hash(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     psa_algorithm_t alg, const uint8_t *hash, size_t hash_length,
 | |
|     const uint8_t *signature, size_t signature_length) {
 | |
|     return (rsa_verify_hash(
 | |
|                 attributes,
 | |
|                 key_buffer, key_buffer_size,
 | |
|                 alg, hash, hash_length,
 | |
|                 signature, signature_length));
 | |
| }
 | |
| #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) ||
 | |
|         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) */
 | |
| 
 | |
| /*
 | |
|  * BEYOND THIS POINT, TEST DRIVER ENTRY POINTS ONLY.
 | |
|  */
 | |
| 
 | |
| #if defined(PSA_CRYPTO_DRIVER_TEST)
 | |
| 
 | |
| #if defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_KEY_PAIR) || \
 | |
|     defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_PUBLIC_KEY)
 | |
| 
 | |
| psa_status_t mbedtls_transparent_test_driver_rsa_import_key(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *data, size_t data_length,
 | |
|     uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     size_t *key_buffer_length, size_t *bits) {
 | |
|     return (rsa_import_key(attributes, data, data_length,
 | |
|                            key_buffer, key_buffer_size,
 | |
|                            key_buffer_length, bits));
 | |
| }
 | |
| 
 | |
| psa_status_t mbedtls_transparent_test_driver_rsa_export_public_key(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     uint8_t *data, size_t data_size, size_t *data_length) {
 | |
|     return (rsa_export_public_key(attributes, key_buffer, key_buffer_size,
 | |
|                                   data, data_size, data_length));
 | |
| }
 | |
| 
 | |
| #endif /* defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_KEY_PAIR) ||
 | |
|           defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_PUBLIC_KEY) */
 | |
| 
 | |
| #if defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_KEY_PAIR)
 | |
| psa_status_t mbedtls_transparent_test_driver_rsa_generate_key(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length) {
 | |
|     return (rsa_generate_key(attributes, key_buffer, key_buffer_size,
 | |
|                              key_buffer_length));
 | |
| }
 | |
| #endif /* defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_KEY_PAIR) */
 | |
| 
 | |
| #if defined(MBEDTLS_PSA_ACCEL_ALG_RSA_PKCS1V15_SIGN) || \
 | |
|     defined(MBEDTLS_PSA_ACCEL_ALG_RSA_PSS)
 | |
| psa_status_t mbedtls_transparent_test_driver_rsa_sign_hash(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     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(MBEDTLS_RSA_C) && \
 | |
|     (defined(MBEDTLS_PKCS1_V15) || defined(MBEDTLS_PKCS1_V21))
 | |
|     return (rsa_sign_hash(
 | |
|                 attributes,
 | |
|                 key_buffer, key_buffer_size,
 | |
|                 alg, hash, hash_length,
 | |
|                 signature, signature_size, signature_length));
 | |
| #else
 | |
|     (void)attributes;
 | |
|     (void)key_buffer;
 | |
|     (void)key_buffer_size;
 | |
|     (void)alg;
 | |
|     (void)hash;
 | |
|     (void)hash_length;
 | |
|     (void)signature;
 | |
|     (void)signature_size;
 | |
|     (void)signature_length;
 | |
|     return (PSA_ERROR_NOT_SUPPORTED);
 | |
| #endif
 | |
| }
 | |
| 
 | |
| psa_status_t mbedtls_transparent_test_driver_rsa_verify_hash(
 | |
|     const psa_key_attributes_t *attributes,
 | |
|     const uint8_t *key_buffer, size_t key_buffer_size,
 | |
|     psa_algorithm_t alg, const uint8_t *hash, size_t hash_length,
 | |
|     const uint8_t *signature, size_t signature_length) {
 | |
| #if defined(MBEDTLS_RSA_C) && \
 | |
|     (defined(MBEDTLS_PKCS1_V15) || defined(MBEDTLS_PKCS1_V21))
 | |
|     return (rsa_verify_hash(
 | |
|                 attributes,
 | |
|                 key_buffer, key_buffer_size,
 | |
|                 alg, hash, hash_length,
 | |
|                 signature, signature_length));
 | |
| #else
 | |
|     (void)attributes;
 | |
|     (void)key_buffer;
 | |
|     (void)key_buffer_size;
 | |
|     (void)alg;
 | |
|     (void)hash;
 | |
|     (void)hash_length;
 | |
|     (void)signature;
 | |
|     (void)signature_length;
 | |
|     return (PSA_ERROR_NOT_SUPPORTED);
 | |
| #endif
 | |
| }
 | |
| #endif /* defined(MBEDTLS_PSA_ACCEL_ALG_RSA_PKCS1V15_SIGN) ||
 | |
|         * defined(MBEDTLS_PSA_ACCEL_ALG_RSA_PSS) */
 | |
| 
 | |
| #endif /* PSA_CRYPTO_DRIVER_TEST */
 | |
| 
 | |
| #endif /* MBEDTLS_PSA_CRYPTO_C */
 |