heres something pointless i made up in about 10 seconds. dont know if you can use it or not.
void do_fpass( CHAR_DATA *ch, char *argument )
{
char arg[MAX_STRING_LENGTH];
argument = one_argument(argument, arg);
printf_to_char(ch, "Those two arguments encrypted result in: %s\n\r",
crypt(arg, argument));
return;
}

