1 /* $OpenBSD: pk7_attr.c,v 1.12 2017/01/29 17:49:23 beck Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2001.
4 */
5 /* ====================================================================
6 * Copyright (c) 2001-2004 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 <stdio.h>
60 #include <stdlib.h>
61 #include <openssl/bio.h>
62 #include <openssl/asn1.h>
63 #include <openssl/asn1t.h>
64 #include <openssl/pem.h>
65 #include <openssl/pkcs7.h>
66 #include <openssl/x509.h>
67 #include <openssl/err.h>
68
69 int
PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO * si,STACK_OF (X509_ALGOR)* cap)70 PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap)
71 {
72 ASN1_STRING *seq;
73 if (!(seq = ASN1_STRING_new())) {
74 PKCS7error(ERR_R_MALLOC_FAILURE);
75 return 0;
76 }
77 seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data,
78 &X509_ALGORS_it);
79 return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
80 V_ASN1_SEQUENCE, seq);
81 }
82
STACK_OF(X509_ALGOR)83 STACK_OF(X509_ALGOR) *
84 PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
85 {
86 ASN1_TYPE *cap;
87 const unsigned char *p;
88
89 cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
90 if (!cap || (cap->type != V_ASN1_SEQUENCE))
91 return NULL;
92 p = cap->value.sequence->data;
93 return (STACK_OF(X509_ALGOR) *)
94 ASN1_item_d2i(NULL, &p, cap->value.sequence->length,
95 &X509_ALGORS_it);
96 }
97
98 /* Basic smime-capabilities OID and optional integer arg */
99 int
PKCS7_simple_smimecap(STACK_OF (X509_ALGOR)* sk,int nid,int arg)100 PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
101 {
102 X509_ALGOR *alg;
103
104 if (!(alg = X509_ALGOR_new())) {
105 PKCS7error(ERR_R_MALLOC_FAILURE);
106 return 0;
107 }
108 ASN1_OBJECT_free(alg->algorithm);
109 alg->algorithm = OBJ_nid2obj(nid);
110 if (arg > 0) {
111 ASN1_INTEGER *nbit;
112
113 if (!(alg->parameter = ASN1_TYPE_new()))
114 goto err;
115 if (!(nbit = ASN1_INTEGER_new()))
116 goto err;
117 if (!ASN1_INTEGER_set(nbit, arg)) {
118 ASN1_INTEGER_free(nbit);
119 goto err;
120 }
121 alg->parameter->value.integer = nbit;
122 alg->parameter->type = V_ASN1_INTEGER;
123 }
124 if (sk_X509_ALGOR_push(sk, alg) == 0)
125 goto err;
126 return 1;
127
128 err:
129 PKCS7error(ERR_R_MALLOC_FAILURE);
130 X509_ALGOR_free(alg);
131 return 0;
132 }
133
134 int
PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO * si,ASN1_OBJECT * coid)135 PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid)
136 {
137 if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType))
138 return 0;
139 if (!coid)
140 coid = OBJ_nid2obj(NID_pkcs7_data);
141 return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
142 V_ASN1_OBJECT, coid);
143 }
144
145 int
PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO * si,ASN1_TIME * t)146 PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t)
147 {
148 if (!t && !(t = X509_gmtime_adj(NULL, 0))) {
149 PKCS7error(ERR_R_MALLOC_FAILURE);
150 return 0;
151 }
152 return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime,
153 V_ASN1_UTCTIME, t);
154 }
155
156 int
PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO * si,const unsigned char * md,int mdlen)157 PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si, const unsigned char *md,
158 int mdlen)
159 {
160 ASN1_OCTET_STRING *os;
161
162 os = ASN1_OCTET_STRING_new();
163 if (!os)
164 return 0;
165 if (!ASN1_STRING_set(os, md, mdlen) ||
166 !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest,
167 V_ASN1_OCTET_STRING, os)) {
168 ASN1_OCTET_STRING_free(os);
169 return 0;
170 }
171 return 1;
172 }
173