// Arrange
        byte[] key14 = hex("01020304050607 11121314151617"); // two 7-byte chunks
        byte[] key7 = Arrays.copyOfRange(key14, 0, 7);
        byte[] data8 = NtlmUtil.S8;
        byte[] out14 = new byte[16];
        byte[] out7 = new byte[8];

        // Act
        NtlmUtil.E(key14, data8, out14);
        NtlmUtil.E(key7, data8, out7);

        // Assert: first block identical to single-chunk encryption

        assertEquals((byte) 0xEF, buffer[0]); // Little-endian
        assertEquals((byte) 0xCD, buffer[1]);
        assertEquals((byte) 0xAB, buffer[2]);
        assertEquals((byte) 0x89, buffer[3]);
        assertEquals((byte) 0x67, buffer[4]);
        assertEquals((byte) 0x45, buffer[5]);
        assertEquals((byte) 0x23, buffer[6]);
        assertEquals((byte) 0x01, buffer[7]);

            // Test with different fileId patterns
            byte[] zeroFileId = new byte[16];
            Smb2CloseResponse zeroIdResponse = new Smb2CloseResponse(mockConfig, zeroFileId, testFileName);
            assertArrayEquals(zeroFileId, zeroIdResponse.getFileId());

            byte[] maxFileId = new byte[16];
            Arrays.fill(maxFileId, (byte) 0xFF);

    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeParametersWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeDataWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override

        void testWriteBytesWireFormat() {
            byte[] buffer = new byte[1024];
            int result = echoResponse.writeBytesWireFormat(buffer, 0);
            assertEquals(0, result);
        }

        @Test
        @DisplayName("Should handle different buffer positions")
        void testWriteBytesWireFormatDifferentPositions() {
            byte[] buffer = new byte[1024];

	return newErrorMessage([]byte(errorCode), []byte(errorMessage))
}

type messageWriter struct {
	writer          http.ResponseWriter
	getProgressFunc func() (int64, int64)
	bytesReturned   int64

	payloadBuffer      []byte
	payloadBufferIndex int
	payloadCh          chan *bytes.Buffer

	finBytesScanned, finBytesProcessed int64

	errCh  chan []byte
	doneCh chan struct{}
}

        setField(cmd, "fid", 1);
        setField(cmd, "typeOfLock", (byte) type);
        setField(cmd, "newOpLockLevel", (byte) 0);
        setField(cmd, "timeout", 0L);
        setField(cmd, "locks", new LockingAndXRange[0]);
        setField(cmd, "unlocks", new LockingAndXRange[0]);
        setField(cmd, "largeFile", false);
        byte[] buf = new byte[12]; // Buffer needs to be at least 12 bytes for the parameter words

        assertEquals(0, zeroAvFlags.getFlags(), "Flags should be 0 for zero bytes");

        // Test with negative integer (two's complement)
        byte[] negativeBytes = new byte[] { (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF }; // Represents -1
        AvFlags negativeAvFlags = new AvFlags(negativeBytes);
        assertNotNull(negativeAvFlags, "AvFlags object should not be null for negative bytes");

     *
     * @see jcifs.BufferCache#getBuffer()
     */
    @Override
    public byte[] getBuffer() {
        synchronized (this.cache) {
            byte[] buf;

            if (this.freeBuffers > 0) {
                for (int i = 0; i < this.cache.length; i++) {
                    if (this.cache[i] != null) {
                        buf = (byte[]) this.cache[i];
                        this.cache[i] = null;

     * @param key
     *            7-byte "raw" DES key
     * @return 8-byte DES key with parity
     */
    static byte[] des7to8(final byte[] key) {
        final byte key8[] = new byte[8];
        key8[0] = (byte) (key[0] & 0xFE);
        key8[1] = (byte) (key[0] << 7 | (key[1] & 0xFF) >>> 1);
        key8[2] = (byte) (key[1] << 6 | (key[2] & 0xFF) >>> 2);
        key8[3] = (byte) (key[2] << 5 | (key[3] & 0xFF) >>> 3);