garble.c

   1 #include "garble.h"
   2
   3 static char *password;
   4 static char *passp;
   5
   6 void
   7 set_password(char *p)
   8 {
   9         password = p;
  10 }
  11
  12 void
  13 init_garble()
  14 {
  15         passp = password;
  16 }
  17
  18 Byte
  19 ungarble(Byte byte)
  20 {
  21         if (password) {
  22                 byte ^= *passp++;
  23                 if (!*passp) {
  24                         passp = password;
  25                 }
  26         }
  27
  28         return byte;
  29 }
  30
  31 Byte
  32 garble(Byte byte)
  33 {
  34         /* Garble and ungarble are the same thing */
  35         return ungarble(byte);
  36 }