1 /*
2 * Copyright (C) 2017 Red Hat, Inc.
3 *
4 * Authors: Daiki Ueno
5 *
6 * This file is part of GnuTLS.
7 *
8 * The GnuTLS is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public License
10 * as published by the Free Software Foundation; either version 2.1 of
11 * the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program. If not, see <https://www.gnu.org/licenses/>
20 *
21 */
22
23 #include "gnutls_int.h"
24 #include "errors.h"
25 #include <common.h>
26 #include <x509.h>
27 #include <x509_int.h>
28
29 /**
30 * gnutls_x509_spki_init:
31 * @spki: A pointer to the type to be initialized
32 *
33 * This function will initialize a SubjectPublicKeyInfo structure used
34 * in PKIX. The structure is used to set additional parameters
35 * in the public key information field of a certificate.
36 *
37 * Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise a
38 * negative error value.
39 *
40 * Since: 3.6.0
41 *
42 **/
43 int
gnutls_x509_spki_init(gnutls_x509_spki_t * spki)44 gnutls_x509_spki_init(gnutls_x509_spki_t *spki)
45 {
46 gnutls_x509_spki_t tmp;
47
48 FAIL_IF_LIB_ERROR;
49
50 tmp =
51 gnutls_calloc(1, sizeof(gnutls_x509_spki_st));
52
53 if (!tmp)
54 return GNUTLS_E_MEMORY_ERROR;
55
56 *spki = tmp;
57
58 return 0; /* success */
59 }
60
61 /**
62 * gnutls_x509_spki_deinit:
63 * @spki: the SubjectPublicKeyInfo structure
64 *
65 * This function will deinitialize a SubjectPublicKeyInfo structure.
66 *
67 * Since: 3.6.0
68 *
69 **/
70 void
gnutls_x509_spki_deinit(gnutls_x509_spki_t spki)71 gnutls_x509_spki_deinit(gnutls_x509_spki_t spki)
72 {
73 gnutls_free(spki);
74 }
75
76 /**
77 * gnutls_x509_spki_set_rsa_pss_params:
78 * @spki: the SubjectPublicKeyInfo structure
79 * @dig: a digest algorithm of type #gnutls_digest_algorithm_t
80 * @salt_size: the size of salt string
81 *
82 * This function will set the public key parameters for
83 * an RSA-PSS algorithm, in the SubjectPublicKeyInfo structure.
84 *
85 * Since: 3.6.0
86 *
87 **/
88 void
gnutls_x509_spki_set_rsa_pss_params(gnutls_x509_spki_t spki,gnutls_digest_algorithm_t dig,unsigned int salt_size)89 gnutls_x509_spki_set_rsa_pss_params(gnutls_x509_spki_t spki,
90 gnutls_digest_algorithm_t dig,
91 unsigned int salt_size)
92 {
93 spki->pk = GNUTLS_PK_RSA_PSS;
94 spki->rsa_pss_dig = dig;
95 spki->salt_size = salt_size;
96 }
97
98 /**
99 * gnutls_x509_spki_get_rsa_pss_params:
100 * @spki: the SubjectPublicKeyInfo structure
101 * @dig: if non-NULL, it will hold the digest algorithm
102 * @salt_size: if non-NULL, it will hold the salt size
103 *
104 * This function will get the public key algorithm parameters
105 * of RSA-PSS type.
106 *
107 * Returns: zero if the parameters are present or a negative
108 * value on error.
109 *
110 * Since: 3.6.0
111 *
112 **/
113 int
gnutls_x509_spki_get_rsa_pss_params(gnutls_x509_spki_t spki,gnutls_digest_algorithm_t * dig,unsigned int * salt_size)114 gnutls_x509_spki_get_rsa_pss_params(gnutls_x509_spki_t spki,
115 gnutls_digest_algorithm_t *dig,
116 unsigned int *salt_size)
117 {
118 if (spki->pk == 0)
119 return gnutls_assert_val(GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE);
120
121 if (spki->pk != GNUTLS_PK_RSA_PSS)
122 return gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
123
124 if (dig)
125 *dig = spki->rsa_pss_dig;
126 if (salt_size)
127 *salt_size = spki->salt_size;
128
129 return 0;
130 }
131