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
17struct 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 Content Data within it.
45	 *
46	 * This also contains the issuing cert serial number and issuer's name
47	 * [PKCS#7 or CMS ver 1] or issuing cert's SKID [CMS ver 3].
48	 */
49	struct public_key_signature *sig;
50};
51
52struct pkcs7_message {
53	struct x509_certificate *certs;	/* Certificate list */
54	struct x509_certificate *crl;	/* Revocation list */
55	struct pkcs7_signed_info *signed_infos;
56	u8		version;	/* Version of cert (1 -> PKCS#7 or CMS; 3 -> CMS) */
57	bool		have_authattrs;	/* T if have authattrs */
58
59	/* Content Data (or NULL) */
60	enum OID	data_type;	/* Type of Data */
61	size_t		data_len;	/* Length of Data */
62	size_t		data_hdrlen;	/* Length of Data ASN.1 header */
63	const void	*data;		/* Content Data (or 0) */
64};
65