1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* PKCS#7 crypto data parser internal definitions
3 *
4 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8 #include <linux/oid_registry.h>
9 #include <crypto/pkcs7.h>
10 #include "x509_parser.h"
11
12 #define kenter(FMT, ...) \
13 pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__)
14 #define kleave(FMT, ...) \
15 pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
16
17 struct pkcs7_signed_info {
18 struct pkcs7_signed_info *next;
19 struct x509_certificate *signer; /* Signing certificate (in msg->certs) */
20 unsigned index;
21 bool unsupported_crypto; /* T if not usable due to missing crypto */
22 bool blacklisted;
23
24 /* Message digest - the digest of the Content Data (or NULL) */
25 const void *msgdigest;
26 unsigned msgdigest_len;
27
28 /* Authenticated Attribute data (or NULL) */
29 unsigned authattrs_len;
30 const void *authattrs;
31 unsigned long aa_set;
32 #define sinfo_has_content_type 0
33 #define sinfo_has_signing_time 1
34 #define sinfo_has_message_digest 2
35 #define sinfo_has_smime_caps 3
36 #define sinfo_has_ms_opus_info 4
37 #define sinfo_has_ms_statement_type 5
38 time64_t signing_time;
39
40 /* Message signature.
41 *
42 * This contains the generated digest of _either_ the Content Data or
43 * the Authenticated Attributes [RFC2315 9.3]. If the latter, one of
44 * the attributes contains the digest of the the Content Data within
45 * it.
46 *
47 * THis also contains the issuing cert serial number and issuer's name
48 * [PKCS#7 or CMS ver 1] or issuing cert's SKID [CMS ver 3].
49 */
50 struct public_key_signature *sig;
51 };
52
53 struct pkcs7_message {
54 struct x509_certificate *certs; /* Certificate list */
55 struct x509_certificate *crl; /* Revocation list */
56 struct pkcs7_signed_info *signed_infos;
57 u8 version; /* Version of cert (1 -> PKCS#7 or CMS; 3 -> CMS) */
58 bool have_authattrs; /* T if have authattrs */
59
60 /* Content Data (or NULL) */
61 enum OID data_type; /* Type of Data */
62 size_t data_len; /* Length of Data */
63 size_t data_hdrlen; /* Length of Data ASN.1 header */
64 const void *data; /* Content Data (or 0) */
65 };