contrib/opie/libopie/btoa8.c

   1 /* btoa8.c: The opiebtoa8() library function.
   2
   3 %%% copyright-cmetz-96
   4 This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
   5 The Inner Net License Version 3 applies to this software.
   6 You should have received a copy of the license with this software. If
   7 you didn't get a copy, you may request one from <license@inner.net>.
   8
   9         History:
  10
  11         Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for binary arg.
  12         Created by cmetz for OPIE 2.3 (quick re-write).
  13 */
  14
  15 #include "opie_cfg.h"
  16 #include "opie.h"
  17
  18 static char hextochar[16] =
  19 {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
  20
  21 char *opiebtoa8 FUNCTION((out, in), char *out AND struct opie_otpkey *inkey)
  22 {
  23   int i;
  24   unsigned char *in = (unsigned char *)inkey;
  25   char *c = out;
  26
  27   for (i = 0; i < 8; i++) {
  28     *(c++) = hextochar[((*in) >> 4) & 0x0f];
  29     *(c++) = hextochar[(*in++) & 0x0f];
  30   }
  31   *c = 0;
  32
  33   return out;
  34 }