@Test
public void testPoly1305TestVector9() throws GeneralSecurityException {

  byte[] key = TestUtil.hexDecode(""
      + "02000000000000000000000000000000"
      + "00000000000000000000000000000000");
  byte[] in = TestUtil.hexDecode(""
      + "fdffffffffffffffffffffffffffffff");
  Truth.assertThat(Poly1305.computeMac(key, in)).isEqualTo(TestUtil.hexDecode(""
      + "faffffffffffffffffffffffffffffff"));
}