}

            mac.update(data, offset, length);
            final byte[] cmp = new byte[SIGNATURE_LENGTH];
            System.arraycopy(mac.doFinal(), 0, cmp, 0, SIGNATURE_LENGTH);

            // Use constant-time comparison to prevent timing attacks
            if (!MessageDigest.isEqual(sig, cmp)) {
                return false; // Signature verification failed
            }

		return err
	}

	if !c.Algorithm.Available() {
		internalLogIf(GlobalContext, errBitrotHashAlgoInvalid)
		return errBitrotHashAlgoInvalid
	}
	return nil
}

// constant and shouldn't be changed.
const (
	legacyDataDir = "legacy"
)

func (m *xlMetaV1Object) ToFileInfo(volume, path string) (FileInfo, error) {
	if !m.valid() {
		return FileInfo{}, errFileCorrupt
	}

                if (form.maxAccessCount != null) {
                    wConfig.setMaxAccessCount(form.maxAccessCount);
                }
                wConfig.setName(configName);
                wConfig.setNumOfThread(getDefaultInteger("default.config.web.numOfThread", Constants.DEFAULT_NUM_OF_THREAD_FOR_WEB));

            for (final String labelTypeValue : labelList) {
                for (final Map<String, String> map : labelTypeItems) {
                    if (map.get(Constants.ITEM_VALUE).equals(labelTypeValue)) {
                        buf.append(' ');
                        buf.append(map.get(Constants.ITEM_LABEL));
                        break;
                    }
                }
            }
        }
        return buf.toString();

    }

    @Nested
    @DisplayName("Header Constants")
    class HeaderConstants {

        @Test
        @DisplayName("SMB2 header length should be 64 bytes")
        void testSmb2HeaderLength() {
            assertEquals(64, Smb2Constants.SMB2_HEADER_LENGTH, "SMB2 header must be exactly 64 bytes");
        }
    }

    @Nested
    @DisplayName("Negotiation Constants")
    class NegotiationConstants {

        @Test

We can't rely on application threads to read data from the socket. Application threads are transient: sometimes they're reading and writing and sometimes they're off doing application-layer things. But the socket is permanent, and it needs constant attention: we dispatch all incoming frames so the connection is good-to-go when the application layer needs it.

So we have a dedicated thread for every socket that just reads frames and dispatches them.

    void testGetAttributes() {
        // Default instance
        assertEquals(SmbConstants.ATTR_READONLY | SmbConstants.ATTR_DIRECTORY, shareInfo.getAttributes());

        // Instance with values - attributes are still constant
        SmbShareInfo info = new SmbShareInfo(TEST_NET_NAME, TEST_TYPE, TEST_REMARK);
        assertEquals(SmbConstants.ATTR_READONLY | SmbConstants.ATTR_DIRECTORY, info.getAttributes());
    }

    @Test

 * supported. Null keys and values are supported.
 *
 * <p>{@code containsKey(k)}, {@code put(k, v)} and {@code remove(k)} are all (expected and
 * amortized) constant time operations. Expected in the hashtable sense (depends on the hash
 * function doing a good job of distributing the elements to the buckets to a distribution not far

        // Then - response is created even with null config
        assertNotNull(response);
    }

    @Test
    @DisplayName("Should verify SMB2 header length constant usage")
    void testSmb2HeaderLengthUsage() {
        // Given
        Configuration mockConfig = mock(Configuration.class);
        Smb2TreeDisconnectRequest request = new Smb2TreeDisconnectRequest(mockConfig);

        assertDoesNotThrow(() -> request.setFileId(emptyFileId), "Should handle empty file ID without throwing exception");
    }

    @Test
    @DisplayName("Should handle unspecified file ID constant")
    void testSetUnspecifiedFileId() {
        // Given
        RequestWithFileId request = new Smb2CloseRequest(mockConfig, testFileId);

        // When
        request.setFileId(unspecifiedFileId);