System.arraycopy(k, k.length-bytes.length, bytes, 0, bytes.length);
System.arraycopy(vals, vals.length-bytes.length, bytes, 0, bytes.length);
            public void nextBytes(byte[] bytes)            {                byte[] k = new BigInteger("1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef", 16).toByteArray();                System.arraycopy(k, k.length-bytes.length, bytes, 0, bytes.length);            }