1. 根目录:
2. crypto
3. asymmetric_keys
4. x509_parser.h

/* X.509 certificate parser internal definitions
 *
 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */

#include <linux/time.h>
#include <crypto/public_key.h>

struct x509_certificate {
	struct x509_certificate *next;
	struct public_key *pub;			/* Public key details */
	char		*issuer;		/* Name of certificate issuer */
	char		*subject;		/* Name of certificate subject */
	char		*fingerprint;		/* Key fingerprint as hex */
	char		*authority;		/* Authority key fingerprint as hex */
	struct tm	valid_from;
	struct tm	valid_to;
	const void	*tbs;			/* Signed data */
	unsigned	tbs_size;		/* Size of signed data */
	unsigned	raw_sig_size;		/* Size of sigature */
	const void	*raw_sig;		/* Signature data */
	struct public_key_signature sig;	/* Signature parameters */
};

/*
 * x509_cert_parser.c
 */
extern void x509_free_certificate(struct x509_certificate *cert);
extern struct x509_certificate *x509_cert_parse(const void *data, size_t datalen);

/*
 * x509_public_key.c
 */
extern int x509_get_sig_params(struct x509_certificate *cert);
extern int x509_check_signature(const struct public_key *pub,
				struct x509_certificate *cert);