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  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   6  * unrestricted use provided that this legend is included on all tape
   7  * media and as a part of the software program in whole or part.  Users
   8  * may copy or modify Sun RPC without charge, but are not authorized
   9  * to license or distribute it to anyone else except as part of a product or
  10  * program developed by the user.
  11  *
  12  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  13  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  14  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  15  *
  16  * Sun RPC is provided with no support and without any obligation on the
  17  * part of Sun Microsystems, Inc. to assist in its use, correction,
  18  * modification or enhancement.
  19  *
  20  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  21  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  22  * OR ANY PART THEREOF.
  23  *
  24  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  25  * or profits or other special, indirect and consequential damages, even if
  26  * Sun has been advised of the possibility of such damages.
  27  *
  28  * Sun Microsystems, Inc.
  29  * 2550 Garcia Avenue
  30  * Mountain View, California  94043
  31  */
  32 /*
  33  * Table giving odd parity in the low bit for ASCII characters
  34  */
  35 static char partab[128] =
  36 {
  37   0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07,
  38   0x08, 0x08, 0x0b, 0x0b, 0x0d, 0x0d, 0x0e, 0x0e,
  39   0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
  40   0x19, 0x19, 0x1a, 0x1a, 0x1c, 0x1c, 0x1f, 0x1f,
  41   0x20, 0x20, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26,
  42   0x29, 0x29, 0x2a, 0x2a, 0x2c, 0x2c, 0x2f, 0x2f,
  43   0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37,
  44   0x38, 0x38, 0x3b, 0x3b, 0x3d, 0x3d, 0x3e, 0x3e,
  45   0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
  46   0x49, 0x49, 0x4a, 0x4a, 0x4c, 0x4c, 0x4f, 0x4f,
  47   0x51, 0x51, 0x52, 0x52, 0x54, 0x54, 0x57, 0x57,
  48   0x58, 0x58, 0x5b, 0x5b, 0x5d, 0x5d, 0x5e, 0x5e,
  49   0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67,
  50   0x68, 0x68, 0x6b, 0x6b, 0x6d, 0x6d, 0x6e, 0x6e,
  51   0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
  52   0x79, 0x79, 0x7a, 0x7a, 0x7c, 0x7c, 0x7f, 0x7f,
  53 };
  54
  55 /*
  56  * Add odd parity to low bit of 8 byte key
  57  */
  58 void
  59 des_setparity (char *p)
  60 {
  61   int i;
  62
  63   for (i = 0; i < 8; i++)
  64     {
  65       *p = partab[*p & 0x7f];
  66       p++;
  67     }
  68 }