assertThrows(CIFSException.class, () -> ctx.verifyMIC(data, null));
        }

        @Test
        @DisplayName("dispose toggles state and is not idempotent")
        void testDisposeBehavior() throws Exception {
            DummySSPContext ctx = new DummySSPContext(new byte[] { 1 }, true, null, null, 0, false);
            ctx.dispose();