SMBUtil.writeInt4(50, minBuffer, 8);
            SMBUtil.writeInt4(0, minBuffer, 12);
            SMBUtil.writeInt4(0, minBuffer, 16);

            int bytesRead = response.readBytesWireFormat(minBuffer, 0);
            assertEquals(16, bytesRead);
            assertEquals(100, response.getCount());
            assertEquals(50, response.getRemaining());

            // Large buffer

	}

	// write 4 * 4 = 16 bytes
	n, err := rb.Write([]byte(strings.Repeat("abcd", 4)))
	if err != nil {
		t.Fatalf("write failed: %v", err)
	}
	if n != 16 {
		t.Fatalf("expect write 16 bytes but got %d", n)
	}
	if rb.Length() != 16 {
		t.Fatalf("expect len 16 bytes but got %d. r.w=%d, r.r=%d", rb.Length(), rb.w, rb.r)
	}
	if rb.Free() != 48 {
		t.Fatalf("expect free 48 bytes but got %d. r.w=%d, r.r=%d", rb.Free(), rb.w, rb.r)

        // Assert
        assertFalse(Arrays.equals(hash1, hash2), "Different passwords should produce different hashes");
        assertEquals(16, hash1.length, "NT hash should be 16 bytes");
        assertEquals(16, hash2.length, "NT hash should be 16 bytes");
    }

    @Test
    @DisplayName("getNTHash: null password throws NPE with message")
    void testGetNTHash_null() {

	MOVF	F2, 16(R1)
	MOVF	F2, (R1)

	//
	// store ints and bytes
	//
	//	LMOVW rreg ',' addr
	//	{
	//		outcode(int($1), &$2, 0, &$4);
	//	}
	MOVW	R1, foo<>+3(SB)
	MOVW	R1, 16(R2)
	MOVW	R1, (R2)
	MOVW	R1, foo<>+3(SB)
	MOVW	R1, 16(R2)
	MOVW	R1, (R2)
	SC	R1, (R2)

	//	LMOVB rreg ',' addr
	//	{
	//		outcode(int($1), &$2, 0, &$4);
	//	}
	MOVB	R1, foo<>+3(SB)
	MOVB	R1, 16(R2)

        byte[] md4Hash = md4.digest(data);
        byte[] md5Hash = md5.digest(data);

        // Then
        assertNotNull(md4Hash);
        assertNotNull(md5Hash);
        assertEquals(16, md4Hash.length);
        assertEquals(16, md5Hash.length);
    }

    @Test
    @DisplayName("Should handle empty input for hashing")
    void testEmptyInputHashing() {
        // Given
        byte[] emptyData = {};

        mockConfig = mock(Configuration.class);
        mockContext = mock(CIFSContext.class);
        when(mockContext.getConfig()).thenReturn(mockConfig);

        // Create a test file ID (16 bytes)
        testFileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            testFileId[i] = (byte) (i + 1);
        }

        request = new Smb2FlushRequest(mockConfig, testFileId);
    }

    @Test

        // Nonces should have proper size
        assertEquals(16, nonce1.length, "GCM nonce should be 16 bytes");
        assertEquals(16, nonce2.length, "GCM nonce should be 16 bytes");
        assertEquals(16, nonce3.length, "GCM nonce should be 16 bytes");

        // For GCM, last 4 bytes should contain incrementing counter

    private static final int SIGNATURE_LENGTH = 16;

    @BeforeAll
    static void setupClass() {
        // Ensure BouncyCastle provider is available for AES-CMAC
        if (Security.getProvider(BouncyCastleProvider.PROVIDER_NAME) == null) {
            Security.addProvider(new BouncyCastleProvider());
        }
    }

    @BeforeEach
    void setup() {
        sessionKey = new byte[16];
        Arrays.fill(sessionKey, (byte) 0xAA);

    void testReadBytesWireFormatValidStructure() throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[256];
        int offset = 10;

        // Write valid structure (16 bytes)
        SMBUtil.writeInt2(16, buffer, offset); // Structure size
        buffer[offset + 2] = (byte) 0x01; // Share type (DISK)
        buffer[offset + 3] = 0; // Reserved

        dstIndex += 4;

        // Padding to align data to 8-byte boundary
        dstIndex += 4;

        // Write lease V2 data (52 bytes total)
        leaseKey.encode(dst, dstIndex); // LeaseKey (16 bytes)
        dstIndex += 16;

        SMBUtil.writeInt4(leaseState, dst, dstIndex); // LeaseState (4 bytes)
        dstIndex += 4;

        SMBUtil.writeInt4(leaseFlags, dst, dstIndex); // LeaseFlags (4 bytes)