// Any PACDecodingException is acceptable for this test
        assertNotNull(e.getMessage());
    }

    @Test
    void testTooSmallPac() {
        // Test that PAC smaller than 8 bytes is rejected
        byte[] smallData = new byte[4];

        PACDecodingException e = assertThrows(PACDecodingException.class, () -> new Pac(smallData, keys));