1 /*
2 * PSA crypto client code
3 */
4 /*
5 * Copyright The Mbed TLS Contributors
6 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
7 */
8
9 #include "common.h"
10 #include "psa/crypto.h"
11
12 #if defined(MBEDTLS_PSA_CRYPTO_CLIENT)
13
14 #include <string.h>
15 #include "mbedtls/platform.h"
16
psa_reset_key_attributes(psa_key_attributes_t * attributes)17 void psa_reset_key_attributes(psa_key_attributes_t *attributes)
18 {
19 mbedtls_free(attributes->domain_parameters);
20 memset(attributes, 0, sizeof(*attributes));
21 }
22
psa_set_key_domain_parameters(psa_key_attributes_t * attributes,psa_key_type_t type,const uint8_t * data,size_t data_length)23 psa_status_t psa_set_key_domain_parameters(psa_key_attributes_t *attributes,
24 psa_key_type_t type,
25 const uint8_t *data,
26 size_t data_length)
27 {
28 uint8_t *copy = NULL;
29
30 if (data_length != 0) {
31 copy = mbedtls_calloc(1, data_length);
32 if (copy == NULL) {
33 return PSA_ERROR_INSUFFICIENT_MEMORY;
34 }
35 memcpy(copy, data, data_length);
36 }
37 /* After this point, this function is guaranteed to succeed, so it
38 * can start modifying `*attributes`. */
39
40 if (attributes->domain_parameters != NULL) {
41 mbedtls_free(attributes->domain_parameters);
42 attributes->domain_parameters = NULL;
43 attributes->domain_parameters_size = 0;
44 }
45
46 attributes->domain_parameters = copy;
47 attributes->domain_parameters_size = data_length;
48 attributes->core.type = type;
49 return PSA_SUCCESS;
50 }
51
psa_get_key_domain_parameters(const psa_key_attributes_t * attributes,uint8_t * data,size_t data_size,size_t * data_length)52 psa_status_t psa_get_key_domain_parameters(
53 const psa_key_attributes_t *attributes,
54 uint8_t *data, size_t data_size, size_t *data_length)
55 {
56 if (attributes->domain_parameters_size > data_size) {
57 return PSA_ERROR_BUFFER_TOO_SMALL;
58 }
59 *data_length = attributes->domain_parameters_size;
60 if (attributes->domain_parameters_size != 0) {
61 memcpy(data, attributes->domain_parameters,
62 attributes->domain_parameters_size);
63 }
64 return PSA_SUCCESS;
65 }
66
67 #endif /* MBEDTLS_PSA_CRYPTO_CLIENT */
68
