* This method implements the Microsoft variant of the Kerberos ARCFOUR-HMAC-MD5 checksum.
     *
     * @param keyusage the Kerberos key usage number for this operation
     * @param key the encryption key to use for MAC calculation
     * @param data the data to calculate the MAC for
     * @return the calculated MAC bytes
     * @throws GeneralSecurityException if cryptographic operations fail
     */

        }
    }

    // Integration test with actual MD5 to verify HMAC calculation logic
    @Test
    void testHMACT64WithActualMD5() throws NoSuchAlgorithmException {
        // This test uses a real MD5 instance to verify the HMAC calculation logic
        // HMACT64 is a modified HMAC-MD5 where the key is truncated at 64 bytes

        assertEquals(20, bytesDecoded);

        // Verify capacity calculation: alloc * sectPerAlloc * bytesPerSect
        long expectedCapacity = alloc * sectPerAlloc * bytesPerSect;
        assertEquals(expectedCapacity, smbInfoAllocation.getCapacity());

        // Verify free space calculation: free * sectPerAlloc * bytesPerSect
        long expectedFree = free * sectPerAlloc * bytesPerSect;

        SmbComTransaction result = transaction.nextElement();

        assertSame(transaction, result);
    }

    @Test
    @DisplayName("Test pad calculation with various offsets")
    void testPadCalculation() {
        // Test pad calculation with different alignment values
        assertEquals(0, transaction.pad(0)); // Already aligned
        assertEquals(0, transaction.pad(4)); // Already aligned

        // When
        boolean isCancel = request.isCancel();

        // Then
        assertTrue(isCancel, "Should identify itself as a cancel request");
    }

    @Test
    @DisplayName("Test size calculation")
    void testSize() {
        // Given
        Smb2CancelRequest request = new Smb2CancelRequest(mockConfig, 1L, 0L);

        // When
        int size = request.size();

        // Then

        Encodable mockInfo = mock(Encodable.class);
        when(mockInfo.size()).thenReturn(100);
        request.setInfo(mockInfo);

        int size = request.size();

        // Expected size calculation: size8(SMB2_HEADER_LENGTH + 32 + info.size())
        // size8 rounds up to nearest multiple of 8
        int expectedRawSize = Smb2Constants.SMB2_HEADER_LENGTH + 32 + 100;

		case "content-length":
			// Signature-V4 spec excludes Content-Length from signed headers list for signature calculation.
			// But some clients deviate from this rule. Hence we consider Content-Length for signature
			// calculation to be compatible with such clients.
			extractedSignedHeaders.Set(header, strconv.FormatInt(r.ContentLength, 10))
		default:
			return nil, ErrUnsignedHeaders

scanner               manage namespace scanning for usage calculation, lifecycle, healing and more
```

> NOTE: if you set any of the following sub-system configuration using ENVs, dynamic behavior is not supported.

### Usage scanner

        assertEquals(8, emptyContext.size()); // Minimum size
        assertFalse(emptyContext.supportsAlgorithm(CompressionNegotiateContext.COMPRESSION_LZ77));
    }

    @Test
    @DisplayName("Test context size calculation")
    public void testContextSize() {
        int expectedSize = 8 + (3 * 2); // Header + 3 algorithms * 2 bytes each
        assertEquals(expectedSize, context.size());
    }

    @Test

    void testConstructorWithNameOnly() {
        // Test with simple pipe name
        String pipeName = "TestPipe";
        FsctlPipeWaitRequest request = new FsctlPipeWaitRequest(pipeName);

        // Verify size calculation
        int expectedSize = 14 + pipeName.getBytes(StandardCharsets.UTF_16LE).length;
        assertEquals(expectedSize, request.size());
    }

    @Test