/* cipher.h
 *	Copyright (C) 1998 Free Software Foundation, Inc.
 *
 * This file is part of GNUPG.
 *
 * GNUPG 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.
 *
 * GNUPG 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */
#ifndef G10_CIPHER_H
#define G10_CIPHER_H

#define DBG_CIPHER g10c_debug_mode

#include "mpi.h"
#include "../cipher/random.h"


#define CIPHER_ALGO_NONE	 0
#define CIPHER_ALGO_IDEA	 1
#define CIPHER_ALGO_3DES	 2
#define CIPHER_ALGO_CAST5	 3
#define CIPHER_ALGO_BLOWFISH	 4  /* blowfish 128 bit key */
#define CIPHER_ALGO_SAFER_SK128  5
#define CIPHER_ALGO_DES_SK	 6
#define CIPHER_ALGO_TWOFISH	10  /* twofish 256 bit */
#define CIPHER_ALGO_SKIPJACK   101  /* experimental: skipjack */
#define CIPHER_ALGO_TWOFISH_OLD 102 /* experimental: twofish 128 bit */
#define CIPHER_ALGO_DUMMY      110  /* no encryption at all */

#define PUBKEY_ALGO_RSA        1
#define PUBKEY_ALGO_RSA_E      2     /* RSA encrypt only */
#define PUBKEY_ALGO_RSA_S      3     /* RSA sign only */
#define PUBKEY_ALGO_ELGAMAL_E 16     /* encrypt only ElGamal (but not for v3)*/
#define PUBKEY_ALGO_DSA       17
#define PUBKEY_ALGO_ELGAMAL   20     /* sign and encrypt elgamal */

#define PUBKEY_USAGE_SIG     1	    /* key is good for signatures */
#define PUBKEY_USAGE_ENC     2	    /* key is good for encryption */

#define DIGEST_ALGO_MD5       1
#define DIGEST_ALGO_SHA1      2
#define DIGEST_ALGO_RMD160    3
#define DIGEST_ALGO_TIGER     6

#define is_RSA(a)     ((a)==PUBKEY_ALGO_RSA || (a)==PUBKEY_ALGO_RSA_E \
		       || (a)==PUBKEY_ALGO_RSA_S )
#define is_ELGAMAL(a) ((a)==PUBKEY_ALGO_ELGAMAL || (a)==PUBKEY_ALGO_ELGAMAL_E)

int g10c_debug_mode;
int g10_opt_verbose;
const char *g10_opt_homedir;

/*-- dynload.c --*/
void register_cipher_extension( const char *mainpgm, const char *fname );

/*-- rmd160.c --*/
void rmd160_hash_buffer( char *outbuf, const char *buffer, size_t length );


/*-- smallprime.c --*/
extern ushort small_prime_numbers[];


#endif /*G10_CIPHER_H*/