/// note | Nota

Se você verificar o novo banco de dados (falso) `fake_users_db`, você verá como o hash da senha se parece agora: `"$argon2id$v=19$m=65536,t=3,p=4$wagCPXjifgvUFBzq4hqe3w$CYaIb8sB+wtD+Vu/P4uod1+Qof8h+1g7bbDlBID48Rc"`.

///

## Manipular tokens JWT { #handle-jwt-tokens }

Importe os módulos instalados.

當以不存在於資料庫的使用者名稱呼叫 `authenticate_user` 時，我們仍然會拿一個假的雜湊去跑一次 `verify_password`。

這可確保無論使用者名稱是否有效，端點的回應時間都大致相同，避免可用來枚舉既有使用者名稱的「計時攻擊」（timing attacks）。

/// note | 注意

如果你查看新的（假）資料庫 `fake_users_db`，你會看到雜湊後的密碼現在長這樣：`"$argon2id$v=19$m=65536,t=3,p=4$wagCPXjifgvUFBzq4hqe3w$CYaIb8sB+wtD+Vu/P4uod1+Qof8h+1g7bbDlBID48Rc"`。

///

## 處理 JWT 權杖 { #handle-jwt-tokens }

匯入剛安裝的模組。

建立一把隨機的密鑰（secret key）用於簽署 JWT 權杖。

要產生安全的隨機密鑰可使用以下指令：

当使用一个在数据库中不存在的用户名调用 `authenticate_user` 时，我们仍然会针对一个虚拟哈希运行 `verify_password`。

这可以确保无论用户名是否有效，端点的响应时间大致相同，从而防止可用于枚举已存在用户名的“时间攻击”（timing attacks）。

/// note | 注意

如果你查看新的（伪）数据库 `fake_users_db`，现在你会看到哈希后的密码类似这样：`"$argon2id$v=19$m=65536,t=3,p=4$wagCPXjifgvUFBzq4hqe3w$CYaIb8sB+wtD+Vu/P4uod1+Qof8h+1g7bbDlBID48Rc"`。

///

## 处理 JWT 令牌 { #handle-jwt-tokens }

导入已安装的模块。

创建一个用于对 JWT 令牌进行签名的随机密钥。

使用下列命令生成一个安全的随机密钥：

                new Smb2IoctlRequest(context.getConfig(), Smb2IoctlRequest.FSCTL_QUERY_NETWORK_INTERFACE_INFO, new byte[16] // Reserved/Unused file ID
                );
        request.setMaxOutputResponse(65536);
        request.setFlags(Smb2IoctlRequest.SMB2_O_IOCTL_IS_FSCTL);

        // Note: This IOCTL must be sent on an existing session
        // The actual sending would need integration with the session's transport

        final int negotiateContextOffset = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // Validate security buffer parameters
        if (securityBufferLength < 0 || securityBufferLength > 65536) { // 64KB max for security buffer
            throw new SMBProtocolDecodingException("Invalid security buffer length: " + securityBufferLength + " (must be 0-65536)");
        }
        if (securityBufferOffset < 0) {

            assertEquals(8192, samr.ACB_TRUSTED_FOR_DELEGATION);
            assertEquals(16384, samr.ACB_NOT_DELEGATED);
            assertEquals(32768, samr.ACB_USE_DES_KEY_ONLY);
            assertEquals(65536, samr.ACB_DONT_REQUIRE_PREAUTH);
        }

        @Test
        @DisplayName("Should define correct SE_GROUP constants")
        void testSEGroupConstants() {
            // Verify all SE_GROUP constants

    public static final int ACB_USE_DES_KEY_ONLY = 32768;
    /** Account control bit flag: Pre-authentication is not required */
    public static final int ACB_DONT_REQUIRE_PREAUTH = 65536;

    /**
     * SAMR CloseHandle operation for closing an opened SAM handle.
     * This operation releases resources associated with the handle.
     */
    public static class SamrCloseHandle extends DcerpcMessage {

    public static final int ACB_USE_DES_KEY_ONLY = 32768;
    /** Account control bit flag: Pre-authentication is not required */
    public static final int ACB_DONT_REQUIRE_PREAUTH = 65536;

    /**
     * SAMR CloseHandle operation for closing an opened SAM handle.
     * This operation releases resources associated with the handle.
     */
    public static class SamrCloseHandle extends DcerpcMessage {

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        when(mockConfig.isUseUnicode()).thenReturn(true);
        when(mockConfig.getMaximumBufferSize()).thenReturn(65536);
    }

    @Test
    @DisplayName("Test constructor initializes with config and expectInfoClass")
    void testConstructor() {
        byte expectInfoClass = Smb2QueryDirectoryRequest.FILE_BOTH_DIRECTORY_INFO;

        Smb2IoctlRequest request = new Smb2IoctlRequest();
        request.setCtlCode(FSCTL_QUERY_NETWORK_INTERFACE_INFO);
        request.setFileId(new byte[16]);  // Use session ID
        request.setMaxOutputResponse(65536);
        
        Smb2IoctlResponse response = (Smb2IoctlResponse) session.send(request);
        
        if (response.isSuccess()) {
            parseNetworkInterfaces(response.getOutputData());
        }