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