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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 : 1023 : static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
82 : : void *exarg)
83 : : {
84 : 1023 : ASN1_STREAM_ARG *sarg = exarg;
85 : 1023 : PKCS7 **pp7 = (PKCS7 **)pval;
86 : :
87 [ + + + + ]: 1023 : switch(operation)
88 : : {
89 : :
90 : : case ASN1_OP_STREAM_PRE:
91 [ + - ]: 9 : if (PKCS7_stream(&sarg->boundary, *pp7) <= 0)
92 : : return 0;
93 : : case ASN1_OP_DETACHED_PRE:
94 : 10 : sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out);
95 [ + - ]: 10 : if (!sarg->ndef_bio)
96 : : return 0;
97 : : break;
98 : :
99 : : case ASN1_OP_STREAM_POST:
100 : : case ASN1_OP_DETACHED_POST:
101 [ + - ]: 20 : 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 : 248 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
115 : 0 : IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7)
116 : 0 : 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 : 26 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
128 : :
129 : : /* Minor tweak to operation: free up EVP_PKEY */
130 : 732 : static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
131 : : void *exarg)
132 : : {
133 [ + + ]: 732 : if(operation == ASN1_OP_FREE_POST) {
134 : 73 : PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
135 : 73 : EVP_PKEY_free(si->pkey);
136 : : }
137 : 732 : 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 : 52 : 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 : 0 : 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 : 8 : IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
171 : :
172 : : /* Minor tweak to operation: free up X509 */
173 : 288 : static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
174 : : void *exarg)
175 : : {
176 [ + + ]: 288 : if(operation == ASN1_OP_FREE_POST) {
177 : 24 : PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
178 : 24 : X509_free(ri->cert);
179 : : }
180 : 288 : 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 : 24 : 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 : 0 : 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 : 0 : 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 : 0 : 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 : 0 : 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 : 0 : IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7)
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