1 /*
2 * Written by Dr Stephen N Henson ([email protected]) 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 * [email protected].
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 * ([email protected]). This product includes software written by Tim
55 * Hudson ([email protected]). */
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 #include "../asn1/internal.h"
65
66
67 ASN1_SEQUENCE(X509_ALGOR) = {
68 ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
69 ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY),
70 } ASN1_SEQUENCE_END(X509_ALGOR)
71
72 IMPLEMENT_ASN1_FUNCTIONS_const(X509_ALGOR)
73 IMPLEMENT_ASN1_DUP_FUNCTION_const(X509_ALGOR)
74
75 int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval) {
76 if (!alg) {
77 return 0;
78 }
79 if (ptype != V_ASN1_UNDEF) {
80 if (alg->parameter == NULL) {
81 alg->parameter = ASN1_TYPE_new();
82 }
83 if (alg->parameter == NULL) {
84 return 0;
85 }
86 }
87 if (alg) {
88 ASN1_OBJECT_free(alg->algorithm);
89 alg->algorithm = aobj;
90 }
91 if (ptype == 0) {
92 return 1;
93 }
94 if (ptype == V_ASN1_UNDEF) {
95 if (alg->parameter) {
96 ASN1_TYPE_free(alg->parameter);
97 alg->parameter = NULL;
98 }
99 } else {
100 ASN1_TYPE_set(alg->parameter, ptype, pval);
101 }
102 return 1;
103 }
104
X509_ALGOR_get0(const ASN1_OBJECT ** out_obj,int * out_param_type,const void ** out_param_value,const X509_ALGOR * alg)105 void X509_ALGOR_get0(const ASN1_OBJECT **out_obj, int *out_param_type,
106 const void **out_param_value, const X509_ALGOR *alg) {
107 if (out_obj != NULL) {
108 *out_obj = alg->algorithm;
109 }
110 if (out_param_type != NULL) {
111 int type = V_ASN1_UNDEF;
112 const void *value = NULL;
113 if (alg->parameter != NULL) {
114 type = alg->parameter->type;
115 value = asn1_type_value_as_pointer(alg->parameter);
116 }
117 *out_param_type = type;
118 if (out_param_value != NULL) {
119 *out_param_value = value;
120 }
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 int X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md) {
127 int param_type;
128
129 if (EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT) {
130 param_type = V_ASN1_UNDEF;
131 } else {
132 param_type = V_ASN1_NULL;
133 }
134
135 return X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
136 }
137
138 // 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)139 int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b) {
140 int rv;
141 rv = OBJ_cmp(a->algorithm, b->algorithm);
142 if (rv) {
143 return rv;
144 }
145 if (!a->parameter && !b->parameter) {
146 return 0;
147 }
148 return ASN1_TYPE_cmp(a->parameter, b->parameter);
149 }
150