加密XML属性值和元素？

Question

我正在使用C＃应用程序。我的XML文件中有两个敏感数据，即用户名和密码。

I want to: 

登录，保存文件和加载xml时，加密和解密用户名和密码。任何人都可以帮助我吗？

XML文件

<Users> 
    <user username="kelil2000"> 
    <password>123</password> 
    <author>Home Owner</author> 
    <name>Kelil</name> 
    <mobile>0911</mobile> 
    </user> 
    <user username="usminuru"> 
    <password>1234</password> 
    <author>Home Owner</author> 
    <name>Ismail K.</name> 
    <mobile>0910178976</mobile> 
    </user> 
</Users> 

登录：

if (txtUserName.Text == "" || txtPassword.Text == "") 
      { 
       MessageBox.Show("Username or Passowrd field is empty, try again!"); 
       ClearTextBoxes(); 
       return; 
      } 

      int i = 0; // we use this variable to count if ther’s a user with this name 

      XmlDocument myXml=new XmlDocument(); 

      myXml.Load(Application.StartupPath + "/AppUsers/Users.xml");    

      XmlNodeList userList = myXml.SelectNodes("Users/user"); 

      foreach(XmlNode user in userList) 

      { 

       string userName = user.Attributes["username"].Value; 

       string userPassword = user["password"].InnerText; 

       string userAuthor = user["author"].InnerText; 

       if (userName == txtUserName.Text) 

       { 

        ++i; 

        if (userPassword == txtPassword.Text) 

        { 

         Form panel; 

         this.Opacity = 0; 

         switch(userAuthor) 

         { 

          case "Home Owner": 

           panel = new MainWindow(); 

           panel.Show(); 

           break; 

          case "Member" : 

           panel = new Report(); 

           panel.Show(); 

           break; 


         } 


        } 

        else 

        { 

         MessageBox.Show("Wrong Password!"); 
         ClearTextBoxes(); 

        } 

       } 

       } 

      if (i == 0) 

       MessageBox.Show("No specified user with this name!"); 
      ClearTextBoxes(); 
     } 

保存XML：

private void AddUser() 
     { 
      if (txtUserName.Text == "" || txtPassword.Text == "" || cmbAuthor.Text == "" || txtName.Text == "" || txtMobile.Text == "") 
      { 
       MessageBox.Show("Filed is empty"); 
       return; 
      } 
      try 
      { 
       string _file = (Application.StartupPath + "/AppUsers/Users.xml"); 
       XDocument doc; 

       if (!File.Exists(_file)) 
       { 
        doc = new XDocument(); 
        doc.Add(new XElement("Users")); 
       } 
       else 
       { 
        doc = XDocument.Load(_file); 
       } 

       doc.Root.Add(
         new XElement("user", 
            new XAttribute("username", txtUserName.Text), 
            new XElement("password", txtPassword.Text), 
            new XElement("author", cmbAuthor.Text), 
            new XElement("name", txtName.Text), 
            new XElement("mobile", txtMobile.Text) 
          ) 
        ); 
       doc.Save(_file); 

      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Something Wrong!" + ex.ToString()); 
      } 
     } 

加载XML文件

private void loadXmlData() 
     { 

      listView1.Items.Clear(); 
      XDocument doc = XDocument.Load(Application.StartupPath + "/AppUsers/Users.xml"); 
      doc.Descendants("user").ToList() 
    .ForEach(x => listView1.Items.Add(
       new ListViewItem(
       new string[] { 
           x.Attribute("username").Value, 
           x.Element("password").Value, 
           x.Element("author").Value, 
            x.Element("name").Value, 
           x.Element("mobile").Value})) 
      ); 



     } 

Answer 1

首先，您需要选择要使用的加密和保存密钥的位置。一旦你这样做了，你需要对你正在写/读的XML文件的值运行加密/解密方法。