1  /*
       2   * Generic DES driver interface
       3   * Keep this file hardware independent!
       4   * Copyright (c) 2010, Oracle America, Inc.
       5   *
       6   * Redistribution and use in source and binary forms, with or without
       7   * modification, are permitted provided that the following conditions are
       8   * met:
       9   *
      10   *     * Redistributions of source code must retain the above copyright
      11   *       notice, this list of conditions and the following disclaimer.
      12   *     * Redistributions in binary form must reproduce the above
      13   *       copyright notice, this list of conditions and the following
      14   *       disclaimer in the documentation and/or other materials
      15   *       provided with the distribution.
      16   *     * Neither the name of the "Oracle America, Inc." nor the names of its
      17   *       contributors may be used to endorse or promote products derived
      18   *       from this software without specific prior written permission.
      19   *
      20   *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21   *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22   *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
      23   *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
      24   *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
      25   *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26   *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
      27   *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      28   *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
      29   *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
      30   *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      31   *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      32   */
      33  
      34  #ifndef _DES_H
      35  #define _DES_H
      36  
      37  #include <sys/types.h>
      38  
      39  #define DES_MAXLEN	65536	/* maximum # of bytes to encrypt  */
      40  #define DES_QUICKLEN	16	/* maximum # of bytes to encrypt quickly */
      41  
      42  enum desdir
      43    {
      44      ENCRYPT, DECRYPT
      45    };
      46  enum desmode
      47    {
      48      CBC, ECB
      49    };
      50  
      51  /*
      52   * parameters to ioctl call
      53   */
      54  struct desparams
      55    {
      56      unsigned char des_key[8];	/* key (with low bit parity) */
      57      enum desdir des_dir;	/* direction */
      58      enum desmode des_mode;	/* mode */
      59      unsigned char des_ivec[8];	/* input vector */
      60      unsigned des_len;		/* number of bytes to crypt */
      61      union
      62        {
      63  	unsigned char UDES_data[DES_QUICKLEN];
      64  	unsigned char *UDES_buf;
      65        }
      66      UDES;
      67  #define des_data UDES.UDES_data	/* direct data here if quick */
      68  #define des_buf	UDES.UDES_buf	/* otherwise, pointer to data */
      69    };
      70  
      71  #endif