2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/asn1t.h>
13 #include <openssl/pkcs7.h>
14 #include <openssl/x509.h>
16 /* PKCS#7 ASN1 module */
18 /* This is the ANY DEFINED BY table for the top level PKCS#7 structure */
20 ASN1_ADB_TEMPLATE(p7default) = ASN1_EXP_OPT(PKCS7, d.other, ASN1_ANY, 0);
23 ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP_OPT(PKCS7, d.data, ASN1_OCTET_STRING_NDEF, 0)),
24 ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP_OPT(PKCS7, d.sign, PKCS7_SIGNED, 0)),
25 ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.enveloped, PKCS7_ENVELOPE, 0)),
26 ADB_ENTRY(NID_pkcs7_signedAndEnveloped, ASN1_NDEF_EXP_OPT(PKCS7, d.signed_and_enveloped, PKCS7_SIGN_ENVELOPE, 0)),
27 ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP_OPT(PKCS7, d.digest, PKCS7_DIGEST, 0)),
28 ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP_OPT(PKCS7, d.encrypted, PKCS7_ENCRYPT, 0))
29 } ASN1_ADB_END(PKCS7, 0, type, 0, &p7default_tt, NULL);
31 /* PKCS#7 streaming support */
32 static int pk7_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
35 ASN1_STREAM_ARG *sarg = exarg;
36 PKCS7 **pp7 = (PKCS7 **)pval;
40 case ASN1_OP_STREAM_PRE:
41 if (PKCS7_stream(&sarg->boundary, *pp7) <= 0)
43 case ASN1_OP_DETACHED_PRE:
44 sarg->ndef_bio = PKCS7_dataInit(*pp7, sarg->out);
49 case ASN1_OP_STREAM_POST:
50 case ASN1_OP_DETACHED_POST:
51 if (PKCS7_dataFinal(*pp7, sarg->ndef_bio) <= 0)
59 ASN1_NDEF_SEQUENCE_cb(PKCS7, pk7_cb) = {
60 ASN1_SIMPLE(PKCS7, type, ASN1_OBJECT),
61 ASN1_ADB_OBJECT(PKCS7)
62 }ASN1_NDEF_SEQUENCE_END_cb(PKCS7, PKCS7)
64 IMPLEMENT_ASN1_FUNCTIONS(PKCS7)
66 IMPLEMENT_ASN1_NDEF_FUNCTION(PKCS7)
68 IMPLEMENT_ASN1_DUP_FUNCTION(PKCS7)
70 ASN1_NDEF_SEQUENCE(PKCS7_SIGNED) = {
71 ASN1_SIMPLE(PKCS7_SIGNED, version, ASN1_INTEGER),
72 ASN1_SET_OF(PKCS7_SIGNED, md_algs, X509_ALGOR),
73 ASN1_SIMPLE(PKCS7_SIGNED, contents, PKCS7),
74 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNED, cert, X509, 0),
75 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNED, crl, X509_CRL, 1),
76 ASN1_SET_OF(PKCS7_SIGNED, signer_info, PKCS7_SIGNER_INFO)
77 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGNED)
79 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNED)
81 /* Minor tweak to operation: free up EVP_PKEY */
82 static int si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
85 if (operation == ASN1_OP_FREE_POST) {
86 PKCS7_SIGNER_INFO *si = (PKCS7_SIGNER_INFO *)*pval;
87 EVP_PKEY_free(si->pkey);
92 ASN1_SEQUENCE_cb(PKCS7_SIGNER_INFO, si_cb) = {
93 ASN1_SIMPLE(PKCS7_SIGNER_INFO, version, ASN1_INTEGER),
94 ASN1_SIMPLE(PKCS7_SIGNER_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
95 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_alg, X509_ALGOR),
96 /* NB this should be a SET OF but we use a SEQUENCE OF so the
97 * original order * is retained when the structure is reencoded.
98 * Since the attributes are implicitly tagged this will not affect
101 ASN1_IMP_SEQUENCE_OF_OPT(PKCS7_SIGNER_INFO, auth_attr, X509_ATTRIBUTE, 0),
102 ASN1_SIMPLE(PKCS7_SIGNER_INFO, digest_enc_alg, X509_ALGOR),
103 ASN1_SIMPLE(PKCS7_SIGNER_INFO, enc_digest, ASN1_OCTET_STRING),
104 ASN1_IMP_SET_OF_OPT(PKCS7_SIGNER_INFO, unauth_attr, X509_ATTRIBUTE, 1)
105 } ASN1_SEQUENCE_END_cb(PKCS7_SIGNER_INFO, PKCS7_SIGNER_INFO)
107 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGNER_INFO)
109 ASN1_SEQUENCE(PKCS7_ISSUER_AND_SERIAL) = {
110 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, issuer, X509_NAME),
111 ASN1_SIMPLE(PKCS7_ISSUER_AND_SERIAL, serial, ASN1_INTEGER)
112 } ASN1_SEQUENCE_END(PKCS7_ISSUER_AND_SERIAL)
114 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ISSUER_AND_SERIAL)
116 ASN1_NDEF_SEQUENCE(PKCS7_ENVELOPE) = {
117 ASN1_SIMPLE(PKCS7_ENVELOPE, version, ASN1_INTEGER),
118 ASN1_SET_OF(PKCS7_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
119 ASN1_SIMPLE(PKCS7_ENVELOPE, enc_data, PKCS7_ENC_CONTENT)
120 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENVELOPE)
122 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENVELOPE)
124 /* Minor tweak to operation: free up X509 */
125 static int ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
128 if (operation == ASN1_OP_FREE_POST) {
129 PKCS7_RECIP_INFO *ri = (PKCS7_RECIP_INFO *)*pval;
135 ASN1_SEQUENCE_cb(PKCS7_RECIP_INFO, ri_cb) = {
136 ASN1_SIMPLE(PKCS7_RECIP_INFO, version, ASN1_INTEGER),
137 ASN1_SIMPLE(PKCS7_RECIP_INFO, issuer_and_serial, PKCS7_ISSUER_AND_SERIAL),
138 ASN1_SIMPLE(PKCS7_RECIP_INFO, key_enc_algor, X509_ALGOR),
139 ASN1_SIMPLE(PKCS7_RECIP_INFO, enc_key, ASN1_OCTET_STRING)
140 } ASN1_SEQUENCE_END_cb(PKCS7_RECIP_INFO, PKCS7_RECIP_INFO)
142 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_RECIP_INFO)
144 ASN1_NDEF_SEQUENCE(PKCS7_ENC_CONTENT) = {
145 ASN1_SIMPLE(PKCS7_ENC_CONTENT, content_type, ASN1_OBJECT),
146 ASN1_SIMPLE(PKCS7_ENC_CONTENT, algorithm, X509_ALGOR),
147 ASN1_IMP_OPT(PKCS7_ENC_CONTENT, enc_data, ASN1_OCTET_STRING_NDEF, 0)
148 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENC_CONTENT)
150 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENC_CONTENT)
152 ASN1_NDEF_SEQUENCE(PKCS7_SIGN_ENVELOPE) = {
153 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, version, ASN1_INTEGER),
154 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, recipientinfo, PKCS7_RECIP_INFO),
155 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, md_algs, X509_ALGOR),
156 ASN1_SIMPLE(PKCS7_SIGN_ENVELOPE, enc_data, PKCS7_ENC_CONTENT),
157 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, cert, X509, 0),
158 ASN1_IMP_SET_OF_OPT(PKCS7_SIGN_ENVELOPE, crl, X509_CRL, 1),
159 ASN1_SET_OF(PKCS7_SIGN_ENVELOPE, signer_info, PKCS7_SIGNER_INFO)
160 } ASN1_NDEF_SEQUENCE_END(PKCS7_SIGN_ENVELOPE)
162 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_SIGN_ENVELOPE)
164 ASN1_NDEF_SEQUENCE(PKCS7_ENCRYPT) = {
165 ASN1_SIMPLE(PKCS7_ENCRYPT, version, ASN1_INTEGER),
166 ASN1_SIMPLE(PKCS7_ENCRYPT, enc_data, PKCS7_ENC_CONTENT)
167 } ASN1_NDEF_SEQUENCE_END(PKCS7_ENCRYPT)
169 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_ENCRYPT)
171 ASN1_NDEF_SEQUENCE(PKCS7_DIGEST) = {
172 ASN1_SIMPLE(PKCS7_DIGEST, version, ASN1_INTEGER),
173 ASN1_SIMPLE(PKCS7_DIGEST, md, X509_ALGOR),
174 ASN1_SIMPLE(PKCS7_DIGEST, contents, PKCS7),
175 ASN1_SIMPLE(PKCS7_DIGEST, digest, ASN1_OCTET_STRING)
176 } ASN1_NDEF_SEQUENCE_END(PKCS7_DIGEST)
178 IMPLEMENT_ASN1_FUNCTIONS(PKCS7_DIGEST)
180 /* Specials for authenticated attributes */
183 * When signing attributes we want to reorder them to match the sorted
187 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_SIGN) =
188 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
189 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_SIGN)
192 * When verifying attributes we need to use the received order. So we use
193 * SEQUENCE OF and tag it to SET OF
196 ASN1_ITEM_TEMPLATE(PKCS7_ATTR_VERIFY) =
197 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL,
198 V_ASN1_SET, PKCS7_ATTRIBUTES, X509_ATTRIBUTE)
199 ASN1_ITEM_TEMPLATE_END(PKCS7_ATTR_VERIFY)
201 IMPLEMENT_ASN1_PRINT_FUNCTION(PKCS7)