private char[] readPasswd(InputStream in) throws IOException {
     char[] lineBuffer;
     char[] buf;
     int i;

     buf = lineBuffer = new char[128];

     int room = buf.length;
     int offset = 0;
     int c;

     loop:   while (true) {
       switch (c = in.read()) {
       case -1: 
       case '\n':
	 break loop;

       case '\r':
         int c2 = in.read();
         if ((c2 != '\n') && (c2 != -1)) {
            if (!(in instanceof PushbackInputStream)) {
                in = new PushbackInputStream(in);
	    }
	    ((PushbackInputStream)in).unread(c2);
	 } else 
	 break loop;

       default:
         if (--room < 0) {
	   buf = new char[offset + 128];
           room = buf.length - offset - 1;
           System.arraycopy(lineBuffer, 0, buf, 0, offset);
           Arrays.fill(lineBuffer, ' ');
           lineBuffer = buf;
	 }
	 buf[offset++] = (char) c;
         break;
       }//switch
     }
     if (offset == 0) {
       return null;
     }
     char[] ret = new char[offset];
     System.arraycopy(buf, 0, ret, 0, offset);
     Arrays.fill(buf, ' ');
     System.out.println("Password Captured: " + ret);
     return ret;
   }//read password