/*  @(#)des.h	2.2 88/08/10 4.0 RPCSRC; from 2.7 88/02/08 SMI  */
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user.
 * 
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 * 
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 * 
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 * 
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 * 
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
/*
 * Generic DES driver interface
 * Keep this file hardware independent!
 * Copyright (c) 1986 by Sun Microsystems, Inc.
 */

#define DES_MAXLEN 	65536	/* maximum # of bytes to encrypt  */
#define DES_QUICKLEN	16	/* maximum # of bytes to encrypt quickly */

enum desdir { ENCRYPT, DECRYPT };
enum desmode { CBC, ECB };

/*
 * parameters to ioctl call
 */
struct desparams {
	u_char des_key[8];	/* key (with low bit parity) */
	enum desdir des_dir;	/* direction */
	enum desmode des_mode;	/* mode */
	u_char des_ivec[8];	/* input vector */
	unsigned des_len;	/* number of bytes to crypt */
	union {
		u_char UDES_data[DES_QUICKLEN];
		u_char *UDES_buf;
	} UDES;
#	define des_data UDES.UDES_data	/* direct data here if quick */
#	define des_buf	UDES.UDES_buf	/* otherwise, pointer to data */
};

#ifdef notdef

/*
 * These ioctls are only implemented in SunOS. Maybe someday
 * if somebody writes a driver for DES hardware that works
 * with FreeBSD, we can being that back.
 */

/*
 * Encrypt an arbitrary sized buffer
 */
#define	DESIOCBLOCK	_IOWR(d, 6, struct desparams)

/* 
 * Encrypt of small amount of data, quickly
 */
#define DESIOCQUICK	_IOWR(d, 7, struct desparams) 

#endif

/*
 * Software DES.
 */
extern int _des_crypt __P(( char *, int, struct desparams * ));