1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/* X.509 certificate 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/cleanup.h>
 9#include <linux/time.h>
10#include <crypto/public_key.h>
11#include <keys/asymmetric-type.h>
12
13struct x509_certificate {
14	struct x509_certificate *next;
15	struct x509_certificate *signer;	/* Certificate that signed this one */
16	struct public_key *pub;			/* Public key details */
17	struct public_key_signature *sig;	/* Signature parameters */
18	char		*issuer;		/* Name of certificate issuer */
19	char		*subject;		/* Name of certificate subject */
20	struct asymmetric_key_id *id;		/* Issuer + Serial number */
21	struct asymmetric_key_id *skid;		/* Subject + subjectKeyId (optional) */
22	time64_t	valid_from;
23	time64_t	valid_to;
24	const void	*tbs;			/* Signed data */
25	unsigned	tbs_size;		/* Size of signed data */
26	unsigned	raw_sig_size;		/* Size of signature */
27	const void	*raw_sig;		/* Signature data */
28	const void	*raw_serial;		/* Raw serial number in ASN.1 */
29	unsigned	raw_serial_size;
30	unsigned	raw_issuer_size;
31	const void	*raw_issuer;		/* Raw issuer name in ASN.1 */
32	const void	*raw_subject;		/* Raw subject name in ASN.1 */
33	unsigned	raw_subject_size;
34	unsigned	raw_skid_size;
35	const void	*raw_skid;		/* Raw subjectKeyId in ASN.1 */
36	unsigned	index;
37	bool		seen;			/* Infinite recursion prevention */
38	bool		verified;
39	bool		self_signed;		/* T if self-signed (check unsupported_sig too) */
40	bool		unsupported_sig;	/* T if signature uses unsupported crypto */
41	bool		blacklisted;
42};
43
44/*
45 * x509_cert_parser.c
46 */
47extern void x509_free_certificate(struct x509_certificate *cert);
48DEFINE_FREE(x509_free_certificate, struct x509_certificate *,
49	    if (!IS_ERR(_T)) x509_free_certificate(_T))
50extern struct x509_certificate *x509_cert_parse(const void *data, size_t datalen);
51extern int x509_decode_time(time64_t *_t,  size_t hdrlen,
52			    unsigned char tag,
53			    const unsigned char *value, size_t vlen);
54
55/*
56 * x509_public_key.c
57 */
58extern int x509_get_sig_params(struct x509_certificate *cert);
59extern int x509_check_for_self_signed(struct x509_certificate *cert);