1  #if !defined(lint) && defined(SCCSIDS)
       2  static char sccsid[] = "@(#)des_soft.c	2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
       3  #endif
       4  /*
       5   * Copyright (c) 2010, Oracle America, Inc.
       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  #include <rpc/des_crypt.h>
      35  #include <shlib-compat.h>
      36  
      37  /*
      38   * Table giving odd parity in the low bit for ASCII characters
      39   */
      40  static const char partab[128] =
      41  {
      42    0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07,
      43    0x08, 0x08, 0x0b, 0x0b, 0x0d, 0x0d, 0x0e, 0x0e,
      44    0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
      45    0x19, 0x19, 0x1a, 0x1a, 0x1c, 0x1c, 0x1f, 0x1f,
      46    0x20, 0x20, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26,
      47    0x29, 0x29, 0x2a, 0x2a, 0x2c, 0x2c, 0x2f, 0x2f,
      48    0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37,
      49    0x38, 0x38, 0x3b, 0x3b, 0x3d, 0x3d, 0x3e, 0x3e,
      50    0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
      51    0x49, 0x49, 0x4a, 0x4a, 0x4c, 0x4c, 0x4f, 0x4f,
      52    0x51, 0x51, 0x52, 0x52, 0x54, 0x54, 0x57, 0x57,
      53    0x58, 0x58, 0x5b, 0x5b, 0x5d, 0x5d, 0x5e, 0x5e,
      54    0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67,
      55    0x68, 0x68, 0x6b, 0x6b, 0x6d, 0x6d, 0x6e, 0x6e,
      56    0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
      57    0x79, 0x79, 0x7a, 0x7a, 0x7c, 0x7c, 0x7f, 0x7f,
      58  };
      59  
      60  /*
      61   * Add odd parity to low bit of 8 byte key
      62   */
      63  void
      64  des_setparity (char *p)
      65  {
      66    int i;
      67  
      68    for (i = 0; i < 8; i++)
      69      {
      70        *p = partab[*p & 0x7f];
      71        p++;
      72      }
      73  }
      74  hidden_nolink (des_setparity, libc, GLIBC_2_1)