1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
2 * project 2000. */
3 /* ====================================================================
4 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * 3. All advertising materials mentioning features or use of this
19 * software must display the following acknowledgment:
20 * "This product includes software developed by the OpenSSL Project
21 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
22 *
23 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
24 * endorse or promote products derived from this software without
25 * prior written permission. For written permission, please contact
26 * licensing@OpenSSL.org.
27 *
28 * 5. Products derived from this software may not be called "OpenSSL"
29 * nor may "OpenSSL" appear in their names without prior written
30 * permission of the OpenSSL Project.
31 *
32 * 6. Redistributions of any form whatsoever must retain the following
33 * acknowledgment:
34 * "This product includes software developed by the OpenSSL Project
35 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
36 *
37 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
38 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
39 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
40 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
43 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
44 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
46 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
47 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
48 * OF THE POSSIBILITY OF SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This product includes cryptographic software written by Eric Young
52 * (eay@cryptsoft.com). This product includes software written by Tim
53 * Hudson (tjh@cryptsoft.com). */
54
55 #include <openssl/x509.h>
56
57 #include <openssl/asn1.h>
58 #include <openssl/asn1t.h>
59 #include <openssl/digest.h>
60 #include <openssl/obj.h>
61
62
63 ASN1_SEQUENCE(X509_ALGOR) = {
64 ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
65 ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)
66 } ASN1_SEQUENCE_END(X509_ALGOR)
67
68 ASN1_ITEM_TEMPLATE(X509_ALGORS) =
69 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
70 ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
71
72 IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
73 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
74 IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
75
76 IMPLEMENT_ASN1_SET_OF(X509_ALGOR)
77
78 int X509_ALGOR_set0(X509_ALGOR *alg, const ASN1_OBJECT *aobj, int ptype, void *pval)
79 {
80 if (!alg)
81 return 0;
82 if (ptype != V_ASN1_UNDEF)
83 {
84 if (alg->parameter == NULL)
85 alg->parameter = ASN1_TYPE_new();
86 if (alg->parameter == NULL)
87 return 0;
88 }
89 if (alg)
90 {
91 if (alg->algorithm)
92 ASN1_OBJECT_free(alg->algorithm);
93 alg->algorithm = (ASN1_OBJECT*) aobj;
94 }
95 if (ptype == 0)
96 return 1;
97 if (ptype == V_ASN1_UNDEF)
98 {
99 if (alg->parameter)
100 {
101 ASN1_TYPE_free(alg->parameter);
102 alg->parameter = NULL;
103 }
104 }
105 else
106 ASN1_TYPE_set(alg->parameter, ptype, pval);
107 return 1;
108 }
109
X509_ALGOR_get0(ASN1_OBJECT ** paobj,int * pptype,void ** ppval,X509_ALGOR * algor)110 void X509_ALGOR_get0(ASN1_OBJECT **paobj, int *pptype, void **ppval,
111 X509_ALGOR *algor)
112 {
113 if (paobj)
114 *paobj = algor->algorithm;
115 if (pptype)
116 {
117 if (algor->parameter == NULL)
118 {
119 *pptype = V_ASN1_UNDEF;
120 return;
121 }
122 else
123 *pptype = algor->parameter->type;
124 if (ppval)
125 *ppval = algor->parameter->value.ptr;
126 }
127 }
128
129 /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
130
X509_ALGOR_set_md(X509_ALGOR * alg,const EVP_MD * md)131 void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
132 {
133 int param_type;
134
135 if (EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT)
136 param_type = V_ASN1_UNDEF;
137 else
138 param_type = V_ASN1_NULL;
139
140 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
141
142 }
143
144 /* X509_ALGOR_cmp returns 0 if |a| and |b| are equal and non-zero otherwise. */
X509_ALGOR_cmp(const X509_ALGOR * a,const X509_ALGOR * b)145 int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
146 {
147 int rv;
148 rv = OBJ_cmp(a->algorithm, b->algorithm);
149 if (rv)
150 return rv;
151 if (!a->parameter && !b->parameter)
152 return 0;
153 return ASN1_TYPE_cmp(a->parameter, b->parameter);
154 }
155