final int count = length / 8;

        for (int i = 0; i < count; i++) {
            encrypt(cipherText, i * 8, clearText, i * 8);
        }

        return clearText;
    }

    // Tables, permutations, S-boxes, etc.

    private static byte[] bytebit =
            { (byte) 0x80, (byte) 0x40, (byte) 0x20, (byte) 0x10, (byte) 0x08, (byte) 0x04, (byte) 0x02, (byte) 0x01 };