assertEquals(2, context2.getCipherId(), "Should handle cipher ID 2");
    }

    @Test
    @DisplayName("Should throw exception for null encryption key")
    void testNullEncryptionKey() {
        // When/Then
        assertThrows(NullPointerException.class, () -> {
            new Smb2EncryptionContext(1, DialectVersion.SMB311, null, testDecryptionKey);