assertNotEquals(key1, key2);
        assertFalse(Arrays.equals(key1.getKey(), key2.getKey()));
    }

    @Test
    @DisplayName("Should return defensive copy of key")
    void testDefensiveCopy() {
        byte[] originalBytes =
                new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10 };