C#实现数据加密

 

if(!File.Exists("c://user.ini"))

{

StreamWriter sw = new StreamWriter("c://user.ini");

string strName = tbName.Text;

string strPass = tbPass.Text;

string strEncryPass = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strPass,"md5");

sw.WriteLine(strName);

sw.WriteLine(strEncryPass);

sw.Close();

}

else

{

//从user.ini中读出保存的用户名称和密码，进行比较

StreamReader sr = new StreamReader("c://user.ini");

string strSaveName = sr.ReadLine();

string strSavePass = sr.ReadLine();

sr.Close();

string strInputPass = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(tbPass.Text,"md5");

if(strSaveName!=tbName.Text||strSavePass!=strInputPass)

{

      Response.Write("用户名称或密码错误！");

      mainPanel.Visible = false;

}

      else

Response.Write("<script language = javascript>alert('成功登录!')</script>");

}