1 /*
2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
3 * 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 #include <openssl/x509.h>
58
59 #include <openssl/asn1.h>
60 #include <openssl/asn1t.h>
61 #include <openssl/digest.h>
62 #include <openssl/obj.h>
63
64
65 ASN1_SEQUENCE(X509_ALGOR) = {
66 ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
67 ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)
68 } ASN1_SEQUENCE_END(X509_ALGOR)
69
70 ASN1_ITEM_TEMPLATE(X509_ALGORS) =
71 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
72 ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
73
74 IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
75 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
76 IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
77
78 IMPLEMENT_ASN1_SET_OF(X509_ALGOR)
79
80 int X509_ALGOR_set0(X509_ALGOR *alg, const ASN1_OBJECT *aobj, int ptype,
81 void *pval)
82 {
83 if (!alg)
84 return 0;
85 if (ptype != V_ASN1_UNDEF) {
86 if (alg->parameter == NULL)
87 alg->parameter = ASN1_TYPE_new();
88 if (alg->parameter == NULL)
89 return 0;
90 }
91 if (alg) {
92 if (alg->algorithm)
93 ASN1_OBJECT_free(alg->algorithm);
94 alg->algorithm = (ASN1_OBJECT *)aobj;
95 }
96 if (ptype == 0)
97 return 1;
98 if (ptype == V_ASN1_UNDEF) {
99 if (alg->parameter) {
100 ASN1_TYPE_free(alg->parameter);
101 alg->parameter = NULL;
102 }
103 } else
104 ASN1_TYPE_set(alg->parameter, ptype, pval);
105 return 1;
106 }
107
X509_ALGOR_get0(const ASN1_OBJECT ** paobj,int * pptype,const void ** ppval,const X509_ALGOR * algor)108 void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype, const void **ppval,
109 const X509_ALGOR *algor)
110 {
111 if (paobj)
112 *paobj = algor->algorithm;
113 if (pptype) {
114 if (algor->parameter == NULL) {
115 *pptype = V_ASN1_UNDEF;
116 return;
117 } else
118 *pptype = algor->parameter->type;
119 if (ppval)
120 *ppval = algor->parameter->value.ptr;
121 }
122 }
123
124 /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
125
X509_ALGOR_set_md(X509_ALGOR * alg,const EVP_MD * md)126 void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
127 {
128 int param_type;
129
130 if (EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT)
131 param_type = V_ASN1_UNDEF;
132 else
133 param_type = V_ASN1_NULL;
134
135 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
136
137 }
138
139 /*
140 * X509_ALGOR_cmp returns 0 if |a| and |b| are equal and non-zero otherwise.
141 */
X509_ALGOR_cmp(const X509_ALGOR * a,const X509_ALGOR * b)142 int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
143 {
144 int rv;
145 rv = OBJ_cmp(a->algorithm, b->algorithm);
146 if (rv)
147 return rv;
148 if (!a->parameter && !b->parameter)
149 return 0;
150 return ASN1_TYPE_cmp(a->parameter, b->parameter);
151 }
152