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Viewing changes to crypto/pkcs7/pk7_asn1.c

  • Committer: Bazaar Package Importer
  • Author(s): Christoph Martin
  • Date: 2004-05-24 17:02:29 UTC
  • Revision ID: james.westby@ubuntu.com-20040524170229-ixlo08bbbly0xied
Tags: upstream-0.9.7d
Import upstream version 0.9.7d

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crypto/pkcs7/pk7_asn1.c
 
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/* pk7_asn.c */
 
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/* 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
 *
 
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 
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 *    endorse or promote products derived from this software without
 
27
 *    prior written permission. For written permission, please contact
 
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 *    licensing@OpenSSL.org.
 
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 *
 
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 * 5. Products derived from this software may not be called "OpenSSL"
 
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 *    nor may "OpenSSL" appear in their names without prior written
 
32
 *    permission of the OpenSSL Project.
 
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 *
 
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 * 6. Redistributions of any form whatsoever must retain the following
 
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 *    acknowledgment:
 
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 *    "This product includes software developed by the OpenSSL Project
 
37
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 
38
 *
 
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 
44
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 
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 * 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
 
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
 
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 * ====================================================================
 
52
 *
 
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 * This product includes cryptographic software written by Eric Young
 
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 * (eay@cryptsoft.com).  This product includes software written by Tim
 
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 * Hudson (tjh@cryptsoft.com).
 
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 *
 
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 */
 
58
 
 
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#include <stdio.h>
 
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#include "cryptlib.h"
 
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#include <openssl/asn1t.h>
 
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#include <openssl/pkcs7.h>
 
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#include <openssl/x509.h>
 
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/* PKCS#7 ASN1 module */
 
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/* This is the ANY DEFINED BY table for the top level PKCS#7 structure */
 
68
 
 
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ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0);
 
70
 
 
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ASN1_ADB(PKCS7) = {
 
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        ADB_ENTRY(NID_pkcs7_data, ASN1_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING, 0)),
 
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        ADB_ENTRY(NID_pkcs7_signed, ASN1_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)),
 
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        ADB_ENTRY(NID_pkcs7_enveloped, ASN1_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)),
 
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        ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)),
 
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        ADB_ENTRY(NID_pkcs7_digest, ASN1_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)),
 
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        ADB_ENTRY(NID_pkcs7_encrypted, ASN1_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0))
 
78
} ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL);
 
79
 
 
80
ASN1_SEQUENCE(PKCS7) = {
 
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        ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT),
 
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        ASN1_ADB_OBJECT(PKCS7)
 
83
}ASN1_SEQUENCE_END(PKCS7)
 
84
 
 
85
IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
 
86
IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7)
 
87
 
 
88
ASN1_SEQUENCE(PKCS7_SIGNED) = {
 
89
        ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER),
 
90
        ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR),
 
91
        ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7),
 
92
        ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0),
 
93
        ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1),
 
94
        ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO)
 
95
} ASN1_SEQUENCE_END(PKCS7_SIGNED)
 
96
 
 
97
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
 
98
 
 
99
/* Minor tweak to operation: free up EVP_PKEY */
 
100
static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
 
101
{
 
102
        if(operation == ASN1_OP_FREE_POST) {
 
103
                PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
 
104
                EVP_PKEY_free(si->pkey);
 
105
        }
 
106
        return 1;
 
107
}
 
108
 
 
109
ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = {
 
110
        ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER),
 
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        ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
 
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        ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR),
 
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        /* NB this should be a SET OF but we use a SEQUENCE OF so the
 
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         * original order * is retained when the structure is reencoded.
 
115
         * Since the attributes are implicitly tagged this will not affect
 
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         * the encoding.
 
117
         */
 
118
        ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0),
 
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        ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR),
 
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        ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING),
 
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        ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1)
 
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} ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO)
 
123
 
 
124
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO)
 
125
 
 
126
ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = {
 
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        ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME),
 
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        ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER)
 
129
} ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL)
 
130
 
 
131
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL)
 
132
 
 
133
ASN1_SEQUENCE(PKCS7_ENVELOPE) = {
 
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        ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER),
 
135
        ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
 
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        ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT)
 
137
} ASN1_SEQUENCE_END(PKCS7_ENVELOPE)
 
138
 
 
139
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
 
140
 
 
141
/* Minor tweak to operation: free up X509 */
 
142
static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
 
143
{
 
144
        if(operation == ASN1_OP_FREE_POST) {
 
145
                PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
 
146
                X509_free(ri->cert);
 
147
        }
 
148
        return 1;
 
149
}
 
150
 
 
151
ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = {
 
152
        ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER),
 
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        ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
 
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        ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR),
 
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        ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING)
 
156
} ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO)
 
157
 
 
158
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO)
 
159
 
 
160
ASN1_SEQUENCE(PKCS7_ENC_CONTENT) = {
 
161
        ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT),
 
162
        ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR),
 
163
        ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING, 0)
 
164
} ASN1_SEQUENCE_END(PKCS7_ENC_CONTENT)
 
165
 
 
166
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT)
 
167
 
 
168
ASN1_SEQUENCE(PKCS7_SIGN_ENVELOPE) = {
 
169
        ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER),
 
170
        ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
 
171
        ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR),
 
172
        ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT),
 
173
        ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0),
 
174
        ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1),
 
175
        ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO)
 
176
} ASN1_SEQUENCE_END(PKCS7_SIGN_ENVELOPE)
 
177
 
 
178
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE)
 
179
 
 
180
ASN1_SEQUENCE(PKCS7_ENCRYPT) = {
 
181
        ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER),
 
182
        ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT)
 
183
} ASN1_SEQUENCE_END(PKCS7_ENCRYPT)
 
184
 
 
185
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT)
 
186
 
 
187
ASN1_SEQUENCE(PKCS7_DIGEST) = {
 
188
        ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER),
 
189
        ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR),
 
190
        ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7),
 
191
        ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING)
 
192
} ASN1_SEQUENCE_END(PKCS7_DIGEST)
 
193
 
 
194
IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST)
 
195
 
 
196
/* Specials for authenticated attributes */
 
197
 
 
198
/* When signing attributes we want to reorder them to match the sorted
 
199
 * encoding.
 
200
 */
 
201
 
 
202
ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) = 
 
203
        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
 
204
ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN)
 
205
 
 
206
/* When verifying attributes we need to use the received order. So 
 
207
 * we use SEQUENCE OF and tag it to SET OF
 
208
 */
 
209
 
 
210
ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) = 
 
211
        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
 
212
                                V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
 
213
ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY)