sunrpc/des_soft.c

   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  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met:
   8  *
   9  *     * Redistributions of source code must retain the above copyright
  10  *       notice, this list of conditions and the following disclaimer.
  11  *     * Redistributions in binary form must reproduce the above
  12  *       copyright notice, this list of conditions and the following
  13  *       disclaimer in the documentation and/or other materials
  14  *       provided with the distribution.
  15  *     * Neither the name of Sun Microsystems, Inc. nor the names of its
  16  *       contributors may be used to endorse or promote products derived
  17  *       from this software without specific prior written permission.
  18  *
  19  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  22  *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  23  *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  24  *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  26  *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  28  *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  29  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <rpc/des_crypt.h>
  34 /*
  35  * Table giving odd parity in the low bit for ASCII characters
  36  */
  37 static const char partab[128] =
  38 {
  39   0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07,
  40   0x08, 0x08, 0x0b, 0x0b, 0x0d, 0x0d, 0x0e, 0x0e,
  41   0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
  42   0x19, 0x19, 0x1a, 0x1a, 0x1c, 0x1c, 0x1f, 0x1f,
  43   0x20, 0x20, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26,
  44   0x29, 0x29, 0x2a, 0x2a, 0x2c, 0x2c, 0x2f, 0x2f,
  45   0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37,
  46   0x38, 0x38, 0x3b, 0x3b, 0x3d, 0x3d, 0x3e, 0x3e,
  47   0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
  48   0x49, 0x49, 0x4a, 0x4a, 0x4c, 0x4c, 0x4f, 0x4f,
  49   0x51, 0x51, 0x52, 0x52, 0x54, 0x54, 0x57, 0x57,
  50   0x58, 0x58, 0x5b, 0x5b, 0x5d, 0x5d, 0x5e, 0x5e,
  51   0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67,
  52   0x68, 0x68, 0x6b, 0x6b, 0x6d, 0x6d, 0x6e, 0x6e,
  53   0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
  54   0x79, 0x79, 0x7a, 0x7a, 0x7c, 0x7c, 0x7f, 0x7f,
  55 };
  56
  57 /*
  58  * Add odd parity to low bit of 8 byte key
  59  */
  60 void
  61 des_setparity (char *p)
  62 {
  63   int i;
  64
  65   for (i = 0; i < 8; i++)
  66     {
  67       *p = partab[*p & 0x7f];
  68       p++;
  69     }
  70 }
  71 libc_hidden_def (des_setparity)