/*

 * Generic DES driver interface

 * Keep this file hardware independent!

 * Copyright (c) 2010, Oracle America, Inc.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 *       copyright notice, this list of conditions and the following

 *       disclaimer in the documentation and/or other materials

 *       provided with the distribution.

 *     * Neither the name of the "Oracle America, Inc." nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef _DES_H

#define _DES_H

#include <sys/types.h>

#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

  {

    unsigned char des_key[8];	/* key (with low bit parity) */

    enum desdir des_dir;	/* direction */

    enum desmode des_mode;	/* mode */

    unsigned char des_ivec[8];	/* input vector */

    unsigned des_len;		/* number of bytes to crypt */

    union

      {

	unsigned char UDES_data[DES_QUICKLEN];

	unsigned 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 */

  };

#endif