Line data Source code
1 : /* pk7_asn.c */
2 : /*
3 : * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 : * 2000.
5 : */
6 : /* ====================================================================
7 : * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
8 : *
9 : * Redistribution and use in source and binary forms, with or without
10 : * modification, are permitted provided that the following conditions
11 : * are met:
12 : *
13 : * 1. Redistributions of source code must retain the above copyright
14 : * notice, this list of conditions and the following disclaimer.
15 : *
16 : * 2. Redistributions in binary form must reproduce the above copyright
17 : * notice, this list of conditions and the following disclaimer in
18 : * the documentation and/or other materials provided with the
19 : * distribution.
20 : *
21 : * 3. All advertising materials mentioning features or use of this
22 : * software must display the following acknowledgment:
23 : * "This product includes software developed by the OpenSSL Project
24 : * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 : *
26 : * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 : * endorse or promote products derived from this software without
28 : * prior written permission. For written permission, please contact
29 : * licensing@OpenSSL.org.
30 : *
31 : * 5. Products derived from this software may not be called "OpenSSL"
32 : * nor may "OpenSSL" appear in their names without prior written
33 : * permission of the OpenSSL Project.
34 : *
35 : * 6. Redistributions of any form whatsoever must retain the following
36 : * acknowledgment:
37 : * "This product includes software developed by the OpenSSL Project
38 : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 : *
40 : * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 : * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 : * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 : * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 : * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 : * OF THE POSSIBILITY OF SUCH DAMAGE.
52 : * ====================================================================
53 : *
54 : * This product includes cryptographic software written by Eric Young
55 : * (eay@cryptsoft.com). This product includes software written by Tim
56 : * Hudson (tjh@cryptsoft.com).
57 : *
58 : */
59 :
60 : #include <stdio.h>
61 : #include "cryptlib.h"
62 : #include <openssl/asn1t.h>
63 : #include <openssl/pkcs7.h>
64 : #include <openssl/x509.h>
65 :
66 : /* PKCS#7 ASN1 module */
67 :
68 : /* This is the ANY DEFINED BY table for the top level PKCS#7 structure */
69 :
70 : ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0);
71 :
72 : ASN1_ADB(PKCS7) = {
73 : ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)),
74 : ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)),
75 : ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)),
76 : ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)),
77 : ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)),
78 : ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0))
79 : } ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL);
80 :
81 : /* PKCS#7 streaming support */
82 0 : static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
83 : void *exarg)
84 : {
85 : ASN1_STREAM_ARG *sarg = exarg;
86 : PKCS7 **pp7 = (PKCS7 **)pval;
87 :
88 0 : switch (operation) {
89 :
90 : case ASN1_OP_STREAM_PRE:
91 0 : if (PKCS7_stream(&sarg->boundary, *pp7) <= 0)
92 : return 0;
93 : case ASN1_OP_DETACHED_PRE:
94 0 : sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out);
95 0 : if (!sarg->ndef_bio)
96 : return 0;
97 : break;
98 :
99 : case ASN1_OP_STREAM_POST:
100 : case ASN1_OP_DETACHED_POST:
101 0 : 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 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
115 :
116 0 : IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7)
117 :
118 0 : IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7)
119 :
120 : ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = {
121 : ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER),
122 : ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR),
123 : ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7),
124 : ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0),
125 : ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1),
126 : ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO)
127 : } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED)
128 :
129 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
130 :
131 : /* Minor tweak to operation: free up EVP_PKEY */
132 0 : static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
133 : void *exarg)
134 : {
135 0 : if (operation == ASN1_OP_FREE_POST) {
136 0 : PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
137 0 : EVP_PKEY_free(si->pkey);
138 : }
139 0 : return 1;
140 : }
141 :
142 : ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = {
143 : ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER),
144 : ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
145 : ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR),
146 : /* NB this should be a SET OF but we use a SEQUENCE OF so the
147 : * original order * is retained when the structure is reencoded.
148 : * Since the attributes are implicitly tagged this will not affect
149 : * the encoding.
150 : */
151 : ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0),
152 : ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR),
153 : ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING),
154 : ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1)
155 : } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO)
156 :
157 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO)
158 :
159 : ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = {
160 : ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME),
161 : ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER)
162 : } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL)
163 :
164 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL)
165 :
166 : ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = {
167 : ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER),
168 : ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
169 : ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT)
170 : } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE)
171 :
172 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
173 :
174 : /* Minor tweak to operation: free up X509 */
175 0 : static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
176 : void *exarg)
177 : {
178 0 : if (operation == ASN1_OP_FREE_POST) {
179 0 : PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
180 0 : X509_free(ri->cert);
181 : }
182 0 : return 1;
183 : }
184 :
185 : ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = {
186 : ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER),
187 : ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
188 : ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR),
189 : ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING)
190 : } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO)
191 :
192 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO)
193 :
194 : ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = {
195 : ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT),
196 : ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR),
197 : ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0)
198 : } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT)
199 :
200 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT)
201 :
202 : ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = {
203 : ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER),
204 : ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
205 : ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR),
206 : ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT),
207 : ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0),
208 : ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1),
209 : ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO)
210 : } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE)
211 :
212 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE)
213 :
214 : ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = {
215 : ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER),
216 : ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT)
217 : } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT)
218 :
219 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT)
220 :
221 : ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = {
222 : ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER),
223 : ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR),
224 : ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7),
225 : ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING)
226 : } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST)
227 :
228 0 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST)
229 :
230 : /* Specials for authenticated attributes */
231 :
232 : /*
233 : * When signing attributes we want to reorder them to match the sorted
234 : * encoding.
235 : */
236 :
237 : ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) =
238 : ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
239 : ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN)
240 :
241 : /*
242 : * When verifying attributes we need to use the received order. So we use
243 : * SEQUENCE OF and tag it to SET OF
244 : */
245 :
246 : ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) =
247 : ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
248 : V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
249 : ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY)
250 :
251 0 : IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7)
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