/* SPDX-License-Identifier: GPL-2.0-or-later */

  /* X.509 certificate parser internal definitions
   *
   * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
   * Written by David Howells (dhowells@redhat.com)

   */

  #include <linux/time.h>

  #include <crypto/public_key.h>

  #include <keys/asymmetric-type.h>

  
  struct x509_certificate {
  	struct x509_certificate *next;

  	struct x509_certificate *signer;	/* Certificate that signed this one */

  	struct public_key *pub;			/* Public key details */

  	struct public_key_signature *sig;	/* Signature parameters */

  	char		*issuer;		/* Name of certificate issuer */
  	char		*subject;		/* Name of certificate subject */

  	struct asymmetric_key_id *id;		/* Issuer + Serial number */

  	struct asymmetric_key_id *skid;		/* Subject + subjectKeyId (optional) */

  	time64_t	valid_from;
  	time64_t	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 */

  	const void	*raw_serial;		/* Raw serial number in ASN.1 */
  	unsigned	raw_serial_size;
  	unsigned	raw_issuer_size;
  	const void	*raw_issuer;		/* Raw issuer name in ASN.1 */
  	const void	*raw_subject;		/* Raw subject name in ASN.1 */
  	unsigned	raw_subject_size;

  	unsigned	raw_skid_size;
  	const void	*raw_skid;		/* Raw subjectKeyId in ASN.1 */

  	unsigned	index;
  	bool		seen;			/* Infinite recursion prevention */
  	bool		verified;

  	bool		self_signed;		/* T if self-signed (check unsupported_sig too) */
  	bool		unsupported_key;	/* T if key uses unsupported crypto */
  	bool		unsupported_sig;	/* T if signature uses unsupported crypto */

  	bool		blacklisted;

  };
  
  /*
   * 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);

  extern int x509_decode_time(time64_t *_t,  size_t hdrlen,
  			    unsigned char tag,
  			    const unsigned char *value, size_t vlen);

  
  /*
   * x509_public_key.c
   */
  extern int x509_get_sig_params(struct x509_certificate *cert);

  extern int x509_check_for_self_signed(struct x509_certificate *cert);