/*
*  Copyright (C) (2004) (Mario Juric) <mjuric@astro.princeton.edu>
*
*  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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef seekcrypt_h
#define seekcrypt_h

/************************************************/

typedef struct ENCFILE_t ENCFILE;

ENCFILE *enc_fopen(const char *filename, const char *rwmode, const char *passphrase);
int enc_fread(void *out, int size, int count, ENCFILE *ef);
int enc_fwrite(void *data, int size, int count, ENCFILE *ef);

int enc_fseek(ENCFILE *ef, long at, int dir);
int enc_ftell(ENCFILE *ef);

void enc_fflush(ENCFILE *ef);
int enc_feof(ENCFILE *ef);
int enc_fclose(ENCFILE *ef);

void enc_info(ENCFILE *ef);

/************************************************/

/* index_mode flags */
#define INDEX_CREATE           0x01
#define INDEX_LOAD             0x02
#define INDEX_SAVE             0x04

int enc_add_index(ENCFILE *ef, const char *indexfile, const char *passphrase, int index_mode);

#endif