cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(keybytes, "AES"), new IvParameterSpec(ZERO_IV, 0, ZERO_IV.length));
        if (constant.length != cipher.getBlockSize()) {
            constant = expandNFold(constant, cipher.getBlockSize());
        }
        byte[] enc = constant;
        int klen = keybytes.length;
        byte[] dk = new byte[klen];
        for (int n = 0; n < klen;) {

      throw new AssertionError(impossible);
    }
  }

  /**
   * Returns an optional enum constant for the given type, using {@link Enum#valueOf}. If the
   * constant does not exist, {@link Optional#absent} is returned. A common use case is for parsing
   * user input or falling back to a default enum constant. For example, {@code
   * Enums.getIfPresent(Country.class, countryInput).or(Country.DEFAULT);}
   *
   * @since 12.0

    assertEquals("correct", f.apply(new Object()));
    assertEquals("correct", f.apply(null));

    Function<@Nullable Object, @Nullable String> g = Functions.constant(null);
    assertEquals(null, g.apply(2));
    assertEquals(null, g.apply(null));

    new EqualsTester()
        .addEqualityGroup(f, Functions.constant("correct"))

    /**
     * Log level constant for debug messages.
     */
    public static final String DEBUG = "DEBUG";

    /**
     * Log level constant for info messages.
     */
    public static final String INFO = "INFO";

    /**
     * Log level constant for warning messages.
     */
    public static final String WARN = "WARN";

    /**
     * Log level constant for error messages.
     */

        KerberosKey key = new KerberosKey(TEST_PRINCIPAL, new byte[16], PacSignature.ETYPE_AES128_CTS_HMAC_SHA1_96, 0);
        byte[] constant = "constant".getBytes();
        byte[] derivedKey = PacMac.deriveKeyAES(key, constant);
        assertNotNull(derivedKey);
        assertEquals(16, derivedKey.length);

        // Test with a different key size

            auth2.close();
            auth3.close();
        }
    }

    /**
     * Test that the constant-time comparison method is actually used internally.
     */
    @Test
    public void testConstantTimeMethodExists() throws Exception {
        // Use reflection to verify the constant-time method exists

        }
    }

    /**
     * Encrypt using AES-GCM with constant-time operations
     */
    private EncryptionResult encryptWithGCM(byte[] message, byte[] nonce, byte[] associatedData) throws Exception {
        final Cipher cipher = createGCMCipher(true, nonce);
        cipher.updateAAD(associatedData);

        // Use constant-time encryption

        assertNull(entries[0].getName());
        assertEquals(8, entries[0].getType()); // TYPE_SHARE constant value

        assertInstanceOf(SmbShareInfo.class, entries[1]);
        assertEquals("valid_share", entries[1].getName());
        assertEquals(8, entries[1].getType()); // TYPE_SHARE constant value
    }

    @Test
    @DisplayName("DCE/RPC flags should be set correctly")
    void testDcerpcFlags() {

    /**
     * Share type constant for disk shares (file shares).
     */
    public static final byte SMB2_SHARE_TYPE_DISK = 0x1;
    /**
     * Share type constant for named pipe shares (IPC).
     */
    public static final byte SMB2_SHARE_TYPE_PIPE = 0x2;
    /**
     * Share type constant for printer shares.
     */
    public static final byte SMB2_SHARE_TYPE_PRINT = 0x3;

     * this file is open. This constant may be logically OR'd with other share
     * access flags.
     */
    int FILE_SHARE_READ = 0x01;
    /**
     * When specified as the <code>shareAccess</code> constructor parameter,
     * other SMB clients will be permitted to write to the target file while
     * this file is open. This constant may be logically OR'd with other share
     * access flags.