/*
 * Copyright (C) 1996,1997 Michael R. Elkins <me@mutt.org>
 * Copyright (C) 1999-2002 Thomas Roessler <roessler@does-not-exist.org>
 *
 *     This program is free software; you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation; either version 2 of the License, or
 *     (at your option) any later version.
 * 
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program; if not, write to the Free Software
 *     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#ifdef CRYPT_BACKEND_CLASSIC_PGP

#include "mutt_crypt.h"


typedef struct pgp_signature
{
  struct pgp_signature *next;
  unsigned char sigtype;
  unsigned long sid1;
  unsigned long sid2;
}
pgp_sig_t;

struct pgp_keyinfo
{
  char *keyid;
  struct pgp_uid *address;
  int flags;
  short keylen;
  time_t gen_time;
  int numalg;
  const char *algorithm;
  struct pgp_keyinfo *parent;
  struct pgp_signature *sigs;
  struct pgp_keyinfo *next;

  short fp_len;			  /* length of fingerprint.
				   * 20 for sha-1, 16 for md5.
				   */
  unsigned char fingerprint[20];  /* large enough to hold SHA-1 and RIPEMD160
                                     hashes (20 bytes), MD5 hashes just use the
                                     first 16 bytes */
};
/* Note, that pgp_key_t is now pointer and declared in crypt.h */

typedef struct pgp_uid
{
  char *addr;
  short trust;
  int flags;
  struct pgp_keyinfo *parent;
  struct pgp_uid *next;
  struct pgp_signature *sigs;
}
pgp_uid_t;

enum pgp_version
{
  PGP_V2,
  PGP_V3,
  PGP_GPG,
  PGP_UNKNOWN
};

/* prototypes */

const char *pgp_pkalgbytype (unsigned char);

pgp_key_t pgp_remove_key (pgp_key_t *, pgp_key_t );
pgp_uid_t *pgp_copy_uids (pgp_uid_t *, pgp_key_t );

short pgp_canencrypt (unsigned char);
short pgp_cansign (unsigned char);
short pgp_get_abilities (unsigned char);

void pgp_free_key (pgp_key_t *kpp);

#define pgp_new_keyinfo() safe_calloc (sizeof *((pgp_key_t)0), 1)

#endif /* CRYPT_BACKEND_CLASSIC_PGP */