Type2Message parsed = new Type2Message(t2.toByteArray());
        assertArrayEquals(challenge, parsed.getChallenge());
        assertEquals(target, parsed.getTarget());
    }


    @Test
    public void testParsingType2NoTarget () throws IOException {
        int flags = 0;
        byte[] challenge = new byte[] {
            0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8