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
63ASN1_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
68ASN1_ITEM_TEMPLATE(X509_ALGORS) =
69	ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
70ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
71
72IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
73IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
74IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
75
76IMPLEMENT_ASN1_SET_OF(X509_ALGOR)
77
78int 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
110void 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
131void 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