1 /* x_algor.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2000.
4 */
5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include <stddef.h>
60 #include <openssl/x509.h>
61 #include <openssl/asn1.h>
62 #include <openssl/asn1t.h>
63
64 ASN1_SEQUENCE(X509_ALGOR) = {
65 ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
66 ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)
67 } ASN1_SEQUENCE_END(X509_ALGOR)
68
69 ASN1_ITEM_TEMPLATE(X509_ALGORS) =
70 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
71 ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
72
73 IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
74 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
75 IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
76
77 IMPLEMENT_STACK_OF(X509_ALGOR)
78 IMPLEMENT_ASN1_SET_OF(X509_ALGOR)
79
80 int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval)
81 {
82 if (!alg)
83 return 0;
84 if (ptype != V_ASN1_UNDEF)
85 {
86 if (alg->parameter == NULL)
87 alg->parameter = ASN1_TYPE_new();
88 if (alg->parameter == NULL)
89 return 0;
90 }
91 if (alg)
92 {
93 if (alg->algorithm)
94 ASN1_OBJECT_free(alg->algorithm);
95 alg->algorithm = aobj;
96 }
97 if (ptype == 0)
98 return 1;
99 if (ptype == V_ASN1_UNDEF)
100 {
101 if (alg->parameter)
102 {
103 ASN1_TYPE_free(alg->parameter);
104 alg->parameter = NULL;
105 }
106 }
107 else
108 ASN1_TYPE_set(alg->parameter, ptype, pval);
109 return 1;
110 }
111
112 void X509_ALGOR_get0(ASN1_OBJECT **paobj, int *pptype, void **ppval,
113 X509_ALGOR *algor)
114 {
115 if (paobj)
116 *paobj = algor->algorithm;
117 if (pptype)
118 {
119 if (algor->parameter == NULL)
120 {
121 *pptype = V_ASN1_UNDEF;
122 return;
123 }
124 else
125 *pptype = algor->parameter->type;
126 if (ppval)
127 *ppval = algor->parameter->value.ptr;
128 }
129 }
130
131 /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
132
133 void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
134 {
135 int param_type;
136
137 if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT)
138 param_type = V_ASN1_UNDEF;
139 else
140 param_type = V_ASN1_NULL;
141
142 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
143
144 }