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#ifndef _X509_PARSER_H
9#define _X509_PARSER_H
10
11#include <linux/time.h>
12#include <crypto/public_key.h>
13#include <keys/asymmetric-type.h>
14
15struct x509_certificate {
16	struct x509_certificate *next;
17	struct x509_certificate *signer;	/* Certificate that signed this one */
18	struct public_key *pub;			/* Public key details */
19	struct public_key_signature *sig;	/* Signature parameters */
20	char		*issuer;		/* Name of certificate issuer */
21	char		*subject;		/* Name of certificate subject */
22	struct asymmetric_key_id *id;		/* Issuer + Serial number */
23	struct asymmetric_key_id *skid;		/* Subject + subjectKeyId (optional) */
24	time64_t	valid_from;
25	time64_t	valid_to;
26	const void	*tbs;			/* Signed data */
27	unsigned	tbs_size;		/* Size of signed data */
28	unsigned	raw_sig_size;		/* Size of sigature */
29	const void	*raw_sig;		/* Signature data */
30	const void	*raw_serial;		/* Raw serial number in ASN.1 */
31	unsigned	raw_serial_size;
32	unsigned	raw_issuer_size;
33	const void	*raw_issuer;		/* Raw issuer name in ASN.1 */
34	const void	*raw_subject;		/* Raw subject name in ASN.1 */
35	unsigned	raw_subject_size;
36	unsigned	raw_skid_size;
37	const void	*raw_skid;		/* Raw subjectKeyId in ASN.1 */
38	unsigned	index;
39	bool		seen;			/* Infinite recursion prevention */
40	bool		verified;
41	bool		self_signed;		/* T if self-signed (check unsupported_sig too) */
42	bool		unsupported_key;	/* T if key uses unsupported crypto */
43	bool		unsupported_sig;	/* T if signature uses unsupported crypto */
44	bool		blacklisted;
45};
46
47/*
48 * x509_cert_parser.c
49 */
50extern void x509_free_certificate(struct x509_certificate *cert);
51extern struct x509_certificate *x509_cert_parse(const void *data, size_t datalen);
52extern int x509_decode_time(time64_t *_t,  size_t hdrlen,
53			    unsigned char tag,
54			    const unsigned char *value, size_t vlen);
55
56/*
57 * x509_public_key.c
58 */
59extern int x509_get_sig_params(struct x509_certificate *cert);
60extern int x509_check_for_self_signed(struct x509_certificate *cert);
61#endif /* _X509_PARSER_H */
62