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 
15 struct 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  */
50 extern void x509_free_certificate(struct x509_certificate *cert);
51 extern struct x509_certificate *x509_cert_parse(const void *data, size_t datalen);
52 extern 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  */
59 extern int x509_get_sig_params(struct x509_certificate *cert);
60 extern int x509_check_for_self_signed(struct x509_certificate *cert);
61 #endif /* _X509_PARSER_H */
62