Remove dss1 hack from S/MIME code.
[openssl.git] / crypto / pkcs7 / pk7_asn1.c
1 /* pk7_asn.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 ASN1_NDEF_SEQUENCE(PKCS7) = {
81         ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT),
82         ASN1_ADB_OBJECT(PKCS7)
83 }ASN1_NDEF_SEQUENCE_END(PKCS7)
84
85 IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
86 IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7)
87 IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7)
88
89 ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = {
90         ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER),
91         ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR),
92         ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7),
93         ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0),
94         ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1),
95         ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO)
96 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED)
97
98 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
99
100 /* Minor tweak to operation: free up EVP_PKEY */
101 static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
102                                                         void *exarg)
103 {
104         if(operation == ASN1_OP_FREE_POST) {
105                 PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
106                 EVP_PKEY_free(si->pkey);
107         }
108         return 1;
109 }
110
111 ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = {
112         ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER),
113         ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
114         ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR),
115         /* NB this should be a SET OF but we use a SEQUENCE OF so the
116          * original order * is retained when the structure is reencoded.
117          * Since the attributes are implicitly tagged this will not affect
118          * the encoding.
119          */
120         ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0),
121         ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR),
122         ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING),
123         ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1)
124 } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO)
125
126 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO)
127
128 ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = {
129         ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME),
130         ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER)
131 } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL)
132
133 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL)
134
135 ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = {
136         ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER),
137         ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
138         ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT)
139 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE)
140
141 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
142
143 /* Minor tweak to operation: free up X509 */
144 static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
145                                                                 void *exarg)
146 {
147         if(operation == ASN1_OP_FREE_POST) {
148                 PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
149                 X509_free(ri->cert);
150         }
151         return 1;
152 }
153
154 ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = {
155         ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER),
156         ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
157         ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR),
158         ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING)
159 } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO)
160
161 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO)
162
163 ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = {
164         ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT),
165         ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR),
166         ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING, 0)
167 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT)
168
169 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT)
170
171 ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = {
172         ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER),
173         ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
174         ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR),
175         ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT),
176         ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0),
177         ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1),
178         ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO)
179 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE)
180
181 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE)
182
183 ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = {
184         ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER),
185         ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT)
186 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT)
187
188 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT)
189
190 ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = {
191         ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER),
192         ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR),
193         ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7),
194         ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING)
195 } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST)
196
197 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST)
198
199 /* Specials for authenticated attributes */
200
201 /* When signing attributes we want to reorder them to match the sorted
202  * encoding.
203  */
204
205 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = 
206         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
207 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN)
208
209 /* When verifying attributes we need to use the received order. So 
210  * we use SEQUENCE OF and tag it to SET OF
211  */
212
213 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = 
214         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
215                                 V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
216 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY)
217
218 IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7)