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/*
 *  Copyright (C) 2003 Nikos Mavroyanopoulos
 *
 *  This file is part of GNUTLS.
 *
 *  The GNUTLS library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public   
 *  License as published by the Free Software Foundation; either 
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 *
 */

/* This file contains the types and prototypes for the OpenPGP
 * key and private key parsing functions.
 */

#ifndef GNUTLS_OPENPGP_H
# define GNUTLS_OPENPGP_H

#ifdef __cplusplus
extern "C" {
#endif

#include <gnutls/gnutls.h>
#include <gnutls/extra.h>

/* gnutls_openpgp_key_t should be defined in gnutls.h
 */

typedef enum gnutls_openpgp_key_fmt { GNUTLS_OPENPGP_FMT_RAW,
        GNUTLS_OPENPGP_FMT_BASE64 } gnutls_openpgp_key_fmt;

int gnutls_openpgp_key_init( gnutls_openpgp_key* key); /* initializes the memory for gnutls_openpgp_key_t struct */
void gnutls_openpgp_key_deinit(gnutls_openpgp_key_t key); /* frees all memory */

int gnutls_openpgp_key_import(gnutls_openpgp_key_t key,
    const gnutls_datum_t* data, gnutls_openpgp_key_fmt format);
int gnutls_openpgp_key_export(gnutls_openpgp_key_t key, 
    gnutls_openpgp_key_fmt format, void* output_data,
    size_t* output_data_size);

/* The key_usage flags are defined in gnutls.h. They are
 * the GNUTLS_KEY_* definitions.
 */
int gnutls_openpgp_key_get_key_usage( gnutls_openpgp_key_t cert, unsigned int* key_usage);
int gnutls_openpgp_key_get_fingerprint( gnutls_openpgp_key_t key,
    void* result, size_t* result_size);
    
int gnutls_openpgp_key_get_name( gnutls_openpgp_key_t key,
    int idx, char *buf, size_t *sizeof_buf);

int gnutls_openpgp_key_get_pk_algorithm(gnutls_openpgp_key_t key,
                                            unsigned int *r_bits);

int gnutls_openpgp_key_get_version( gnutls_openpgp_key_t key );

time_t gnutls_openpgp_key_get_creation_time( gnutls_openpgp_key_t key );
time_t gnutls_openpgp_key_get_expiration_time( gnutls_openpgp_key_t key );

int gnutls_openpgp_key_get_id( gnutls_openpgp_key_t key, unsigned char keyid[8]);

int gnutls_openpgp_key_check_hostname( gnutls_openpgp_key_t key, const char *hostname);

int gnutls_openpgp_key_to_xml( gnutls_openpgp_key_t key, gnutls_datum_t *xmlkey,
    int ext);

/* privkey stuff.
 */
int gnutls_openpgp_privkey_init(gnutls_openpgp_privkey_t * key);
void gnutls_openpgp_privkey_deinit(gnutls_openpgp_privkey_t key);
int gnutls_openpgp_privkey_get_pk_algorithm( gnutls_openpgp_privkey_t key, unsigned int *bits);
int gnutls_openpgp_privkey_import(gnutls_openpgp_privkey_t key, 
    const gnutls_datum_t * data, gnutls_openpgp_key_fmt format,
    const char* pass, unsigned int flags);

/* Keyring stuff.
 */
struct gnutls_openpgp_keyring_int; /* object to hold (parsed) openpgp keyrings */
typedef struct gnutls_openpgp_keyring_int* gnutls_openpgp_keyring;

int gnutls_openpgp_keyring_init( gnutls_openpgp_keyring* ring);
void gnutls_openpgp_keyring_deinit(gnutls_openpgp_keyring_t ring);

int gnutls_openpgp_keyring_import(gnutls_openpgp_keyring_t ring,
    const gnutls_datum_t* data, gnutls_openpgp_key_fmt format);

int gnutls_openpgp_keyring_check_id( gnutls_openpgp_keyring_t ring,
    const unsigned char keyid[8], unsigned int flags);

/* Trustdb functions.
 */
struct gnutls_openpgp_trustdb_int; /* object to hold (parsed) openpgp trustdbs */
typedef struct gnutls_openpgp_trustdb_int* gnutls_openpgp_trustdb;

int gnutls_openpgp_trustdb_init( gnutls_openpgp_trustdb* db);
void gnutls_openpgp_trustdb_deinit(gnutls_openpgp_trustdb_t db);

int gnutls_openpgp_trustdb_import(gnutls_openpgp_trustdb_t db,
    const char* file);


int gnutls_openpgp_key_verify_ring( 
    gnutls_openpgp_key_t key, 
    gnutls_openpgp_keyring_t ring,
    unsigned int flags,
    unsigned int * verify /* the output of the verification */);

int gnutls_openpgp_key_verify_self( gnutls_openpgp_key_t key,
        unsigned int flags, unsigned int *verify);

int gnutls_openpgp_key_verify_trustdb( 
    gnutls_openpgp_key_t key, 
    gnutls_openpgp_trustdb_t db,
    unsigned int flags,
    unsigned int * verify /* the output of the verification */);


/* certificate authentication stuff.
 */
int gnutls_certificate_set_openpgp_key(gnutls_certificate_credentials_t res,
    gnutls_openpgp_key_t key, gnutls_openpgp_privkey_t pkey);

#ifdef __cplusplus
}
#endif
#endif /* GNUTLS_OPENPGP_H */