SMB1SigningDigest digest = new SMB1SigningDigest(testMacSigningKey);
        byte[] data = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };

        // Update with partial data
        digest.update(data, 2, 4); // Only update with bytes at index 2-5
        byte[] result = digest.digest();

        assertNotNull(result);
        assertTrue(result.length > 0);
    }

    // Helper method to setup transport mocks

Luego podemos usar `secrets.compare_digest()` para asegurar que `credentials.username` es `"stanleyjobson"`, y que `credentials.password` es `"swordfish"`.

{* ../../docs_src/security/tutorial007_an_py39.py hl[1,12:24] *}

Esto sería similar a:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Devuelve algún error
    ...
```

        dnsDomainInfo.dns_forest = new rpc.unicode_string();
        dnsDomainInfo.dns_forest.length = 12;
        dnsDomainInfo.dns_forest.maximum_length = 24;
        dnsDomainInfo.dns_forest.buffer = new short[] { 'f', 'o', 'r', 'e', 's', 't' };

        dnsDomainInfo.domain_guid = new rpc.uuid_t();
        dnsDomainInfo.domain_guid.time_low = 0x12345678;

pkg syscall (freebsd-amd64), const SizeofBpfZbuf = 24
pkg syscall (freebsd-amd64), const SizeofBpfZbufHeader = 32
pkg syscall (freebsd-amd64), const SizeofCmsghdr = 12
pkg syscall (freebsd-amd64), const SizeofIPMreq = 8
pkg syscall (freebsd-amd64), const SizeofIPMreqn = 12
pkg syscall (freebsd-amd64), const SizeofIPv6Mreq = 20
pkg syscall (freebsd-amd64), const SizeofIfAnnounceMsghdr = 24

Then we can use `secrets.compare_digest()` to ensure that `credentials.username` is `"stanleyjobson"`, and that `credentials.password` is `"swordfish"`.

{* ../../docs_src/security/tutorial007_an_py39.py hl[1,12:24] *}

This would be similar to:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Return some error
    ...
```

Dann können wir `secrets.compare_digest()` verwenden, um sicherzustellen, dass `credentials.username` `"stanleyjobson"` und `credentials.password` `"swordfish"` ist.

{* ../../docs_src/security/tutorial007_an_py39.py hl[1,12:24] *}

Dies wäre das gleiche wie:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Einen Error zurückgeben
    ...
```

        assertNotNull(decrypted);
        // With dummy data, we can't verify the content, just that it decrypts without error
        // and returns a result of the expected size.
        assertEquals(data.length - 24, decrypted.length);
    }

    /**
     * Test decrypt with an unsupported encryption type.
     */
    @Test
    void testDecryptUnsupportedType() {

        testBuffer[20] = 0x01; // revision
        testBuffer[21] = 0x03; // sub-authority count
        testBuffer[22] = 0x00; // identifier authority
        testBuffer[23] = 0x00;
        testBuffer[24] = 0x00;
        testBuffer[25] = 0x00;
        testBuffer[26] = 0x00;
        testBuffer[27] = 0x05;
        SMBUtil.writeInt4(21, testBuffer, 28); // sub-authority 1

        // Setup mock behavior
        when(mockIn.read(any(byte[].class))).thenReturn(7);

        // Act
        byte[] buf = new byte[16];
        byte[] recv = new byte[16];
        int r = spyHandle.sendrecv(buf, 2, 4, recv, 16);

        // Assert
        assertEquals(7, r);
        verify(mockOut).write(eq(buf), eq(2), eq(4));
        verify(mockIn).read(eq(recv));
    }

    @Test

    private static final long ONE_SECOND = 1000L;

    private static final long ONE_MINUTE = 60 * ONE_SECOND;

    private static final long ONE_HOUR = 60 * ONE_MINUTE;

    private static final long ONE_DAY = 24 * ONE_HOUR;
    // CHECKSTYLE_ON: MagicNumber

    public static final String BUILD_VERSION_PROPERTY = "version";

    public static String showVersion() {
        return showVersion(null, null);
    }