// Test initial encryption
        byte[] plaintext1 = "Before rotation".getBytes();
        byte[] encrypted1 = context.encryptMessage(plaintext1, 1L);
        byte[] decrypted1 = context.decryptMessage(encrypted1);
        assertArrayEquals(plaintext1, decrypted1);

        // When - Rotate keys
        byte[] newEncKey = new byte[16];
        byte[] newDecKey = new byte[16];
        new SecureRandom().nextBytes(newEncKey);

        String name = "TEST            ";
        System.arraycopy(name.getBytes("US-ASCII"), 0, src, srcIndex + 13, 16);
        src[srcIndex + 28] = 0x00; // hex code
        src[srcIndex + 29] = 0x04; // flags
        // MAC address (6 bytes)
        byte[] mac = new byte[6];
        System.arraycopy(mac, 0, src, srcIndex + 31, 6);
        // Stats (6 bytes)
        byte[] stats = new byte[6];

class HMACT64Test {

    private static final byte[] TEST_KEY = "testkey".getBytes();
    private static final byte[] LONG_TEST_KEY = new byte[80]; // Longer than 64 bytes
    private static final byte[] SHORT_TEST_KEY = "short".getBytes();
    private static final byte[] TEST_DATA = "testdata".getBytes();
    private static final byte[] EMPTY_DATA = new byte[0];

    static {
        // Initialize long key with predictable data

    }

    @Test
    @DisplayName("Should handle special byte values correctly")
    void testSpecialByteValues() {
        // Test boundary values
        byte[] data = { (byte) 0x00, // min value
                (byte) 0xFF, // max value (-1 as signed byte)
                (byte) 0x7F, // max positive
                (byte) 0x80 // min negative
        };

        String result = Hexdump.toHexString(data);

            // First read
            byte[] buffer1 = createValidOplockBreakBuffer((byte) 0x01, createTestData(16));
            notification.readBytesWireFormat(buffer1, 0);

            // Second read with different values
            byte[] fileId2 = new byte[16];
            Arrays.fill(fileId2, (byte) 0x99);
            byte[] buffer2 = createValidOplockBreakBuffer((byte) 0x08, fileId2);

    hasher = HASH_FN.newHasher();
    hasher
        .putByte((byte) 0x01)
        .putByte((byte) 0x01)
        .putByte((byte) 0x00)
        .putByte((byte) 0x01)
        .putByte((byte) 0x00)
        .putByte((byte) 0x00)
        .putByte((byte) 0x00)
        .putByte((byte) 0x00);
    assertEquals(hashCode, hasher.hash().asLong());

    hasher = HASH_FN.newHasher();

     * @param outputOffset the offset in the output buffer
     * @param algorithm the compression algorithm that was used
     * @return the number of bytes written to the output buffer
     * @throws CIFSException if decompression fails
     */
    int decompress(byte[] compressedData, int offset, int length, byte[] outputBuffer, int outputOffset, int algorithm)
            throws CIFSException;

    /**

        }

        @Test
        @DisplayName("Should throw IOException for fragment length exceeding max")
        void testDoSendReceiveFragment_FragmentTooLarge() throws Exception {
            DcerpcPipeHandle handle = createMockedDcerpcPipeHandle();

            byte[] buf = new byte[50];
            byte[] inB = new byte[100];

                Arguments.of(0xFFFFFFFF, new byte[] { (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF }),
                Arguments.of(0x7FFFFFFF, new byte[] { (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0x7F }));
    }

    @ParameterizedTest
    @MethodSource("int32Provider")
    @DisplayName("readParameterWordsWireFormat correctly decodes 32-bit offset")
    void testReadParameterWords(int expectedInt, byte[] bytes) {

        byte[] data = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        cos.write(data, 2, 3); // Write bytes at index 2, 3, 4
        assertTrue(cos.isInMemory());
        cos.close();
    }

    @Test
    public void testWriteWithOffsetAndLengthExceedingThreshold() throws IOException {
        // Test write(byte[], int, int) exceeding threshold