1 /* pk7_asn.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 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 */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/asn1t.h>
62 #include <openssl/pkcs7.h>
63 #include <openssl/x509.h>
64
65 /* PKCS#7 ASN1 module */
66
67 /* This is the ANY DEFINED BY table for the top level PKCS#7 structure */
68
69 ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0);
70
71 ASN1_ADB(PKCS7) = {
72 ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)),
73 ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)),
74 ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)),
75 ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)),
76 ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)),
77 ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0))
78 } ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL);
79
80 /* PKCS#7 streaming support */
81 static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
82 void *exarg)
83 {
84 ASN1_STREAM_ARG *sarg = exarg;
85 PKCS7 **pp7 = (PKCS7 **)pval;
86
87 switch(operation)
88 {
89
90 case ASN1_OP_STREAM_PRE:
91 if (PKCS7_stream(&sarg->boundary, *pp7) <= 0)
92 return 0;
93 case ASN1_OP_DETACHED_PRE:
94 sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out);
95 if (!sarg->ndef_bio)
96 return 0;
97 break;
98
99 case ASN1_OP_STREAM_POST:
100 case ASN1_OP_DETACHED_POST:
101 if (PKCS7_dataFinal(*pp7, sarg->ndef_bio) <= 0)
102 return 0;
103 break;
104
105 }
106 return 1;
107 }
108
109 ASN1_NDEF_SEQUENCE_cb(PKCS7, pk7_cb) = {
110 ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT),
111 ASN1_ADB_OBJECT(PKCS7)
112 }ASN1_NDEF_SEQUENCE_END_cb(PKCS7, PKCS7)
113
114 IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
115 IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7)
116 IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7)
117
118 ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = {
119 ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER),
120 ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR),
121 ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7),
122 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0),
123 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1),
124 ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO)
125 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED)
126
127 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
128
129 /* Minor tweak to operation: free up EVP_PKEY */
130 static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
131 void *exarg)
132 {
133 if(operation == ASN1_OP_FREE_POST) {
134 PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
135 EVP_PKEY_free(si->pkey);
136 }
137 return 1;
138 }
139
140 ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = {
141 ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER),
142 ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
143 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR),
144 /* NB this should be a SET OF but we use a SEQUENCE OF so the
145 * original order * is retained when the structure is reencoded.
146 * Since the attributes are implicitly tagged this will not affect
147 * the encoding.
148 */
149 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0),
150 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR),
151 ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING),
152 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1)
153 } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO)
154
155 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO)
156
157 ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = {
158 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME),
159 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER)
160 } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL)
161
162 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL)
163
164 ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = {
165 ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER),
166 ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
167 ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT)
168 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE)
169
170 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
171
172 /* Minor tweak to operation: free up X509 */
173 static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
174 void *exarg)
175 {
176 if(operation == ASN1_OP_FREE_POST) {
177 PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
178 X509_free(ri->cert);
179 }
180 return 1;
181 }
182
183 ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = {
184 ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER),
185 ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
186 ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR),
187 ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING)
188 } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO)
189
190 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO)
191
192 ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = {
193 ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT),
194 ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR),
195 ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0)
196 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT)
197
198 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT)
199
200 ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = {
201 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER),
202 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
203 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR),
204 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT),
205 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0),
206 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1),
207 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO)
208 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE)
209
210 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE)
211
212 ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = {
213 ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER),
214 ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT)
215 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT)
216
217 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT)
218
219 ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = {
220 ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER),
221 ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR),
222 ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7),
223 ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING)
224 } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST)
225
226 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST)
227
228 /* Specials for authenticated attributes */
229
230 /* When signing attributes we want to reorder them to match the sorted
231 * encoding.
232 */
233
234 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) =
235 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
236 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN)
237
238 /* When verifying attributes we need to use the received order. So
239 * we use SEQUENCE OF and tag it to SET OF
240 */
241
242 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) =
243 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
244 V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
245 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY)
246
247 IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7)