• 记住密码 cookie+MD5 的应用[转]


    最近做了个前台的登陆和后台的信息审核管理,我是新手,由于里面扯级很多的第一次技术问题,所以,有些问题也折腾了我很久,现在系统做好了,把一前心得和技术代码记下来,免得以后又忘了。

        首先是记住密码模块:

       虽然.net内置了登陆控件,有记住密码的功能,但还是想试着自己做个体会下,里面主要涉及COOKIE的应用,包括安全加密的过程,以下是实现的代码:

       //设置,删除Cookie
            protected void set_cookie()
            {
                HttpCookie UserNameCookie = Request.Cookies["UserNameCookie"];
                HttpCookie UserPasswordCookie = Request.Cookies["UserPasswordCookie"];

                if (this.CheSave.Checked)
                {
                    lblcookie.Text = "1";

                    //保存用户名和密码到cookie
                    if (UserNameCookie == null)
                    {
                        UserNameCookie = new HttpCookie("UserNameCookie");
                        UserNameCookie.Values.Add("UserName", TxtUserName.Text);
                        UserNameCookie.Expires = DateTime.Now.AddDays(30);
                        Response.Cookies.Add(UserNameCookie);

                    }
                    //修改COOKIE
                    else if (UserNameCookie.Values["UserName"] != TxtUserName.Text)
                    {
                        SetToCookie(UserNameCookie, "UserName", TxtUserName.Text);
                    }

                    if (UserPasswordCookie == null)
                    {
                        UserPasswordCookie = new HttpCookie("UserPasswordCookie");
                        string password1 = FormsAuthentication.HashPasswordForStoringInConfigFile(TxtUserPassword.Text, "MD5");     //如果重新指定用户密码,则重新加密密码
                        UserPasswordCookie.Values.Add("UserPassword", password1);
                        UserPasswordCookie.Expires = DateTime.Now.AddDays(30);
                        Response.Cookies.Add(UserPasswordCookie);

                    }
                    else if (UserPasswordCookie.Values["UserPassword"] != FormsAuthentication.HashPasswordForStoringInConfigFile(TxtUserPassword.Text, "MD5") && TxtUserPassword.Text != "1234567890")   

                    //“1234567890”是程现在密码框中的十个字符。
                    {
                        SetToCookie(UserPasswordCookie, "UserPassword", FormsAuthentication.HashPasswordForStoringInConfigFile(TxtUserPassword.Text, "MD5"));
                    }


                }
                else
                {
                    lblcookie.Text = "0";
                    //从cookie删除用户名和密码
                    if (Response.Cookies["UserNameCookie"] != null)
                    {
                        HttpCookie myCookie = new HttpCookie("UserNameCookie");
                        myCookie.Expires = DateTime.Now.AddDays(-1d);
                        Response.Cookies.Add(myCookie);
                    }
                    if (Response.Cookies["UserPasswordCookie"] != null)
                    {
                        HttpCookie myCookie = new HttpCookie("UserPasswordCookie");
                        myCookie.Expires = DateTime.Now.AddDays(-1d);
                        Response.Cookies.Add(myCookie);
                    }
                }

            }
            //检查是否存在COOKie情况
            public void check_cookie()
            {
                HttpCookie UserNameCookie = Request.Cookies["UserNameCookie"];
                HttpCookie UserPasswordCookie = Request.Cookies["UserPasswordCookie"];

                if (UserNameCookie != null)
                {
                    this.CheSave.Checked = true;
                    TxtUserName.Text = UserNameCookie.Values["UserName"];
                }

                if (UserPasswordCookie != null)
                {
                    TxtUserPassword.Attributes.Add("value", "1234567890");//设置密码框初始值
                }
            }
            public string getpassword()
            {
                HttpCookie UserPasswordCookie = Request.Cookies["UserPasswordCookie"];
                string strpwd = "";  //获取此密码字符串与数据库存中的密布相比。
                if (lblcookie.Text == "1")
                {
                    strpwd = UserPasswordCookie.Values["UserPassWord"];//直接获取COOKIE中的密码值
                }
                else
                { 
                    strpwd= FormsAuthentication.HashPasswordForStoringInConfigFile(TxtUserPassword.Text, "MD5"); //对密码进行加密
                }
                return strpwd;                                         //返回密码字段    
            }   

            //修改COOKIE这段的方法
            public void SetToCookie(HttpCookie httpcookie, string cookiename, string cookievalue)
            {
                httpcookie.Values[cookiename] = cookievalue;
                httpcookie.Expires = DateTime.Now.AddDays(30);
                Response.Cookies.Add(httpcookie);
            }
        }

  • 相关阅读:
    过滤选择器——简单过滤选择器
    层次选择器
    选择器——2——基本选择器
    This is a secret
    iframe加载问题
    懒加载
    biubiubiu
    使用JSON JavaScriptSerializer 进行序列化或反序列化时出错。字符串的长度超过了为 maxJsonLength属性
    HTML中       等6种空白空格的区别
    ASP.NET 4.0的ClientIDMode属性
  • 原文地址:https://www.cnblogs.com/zhangzt/p/1845627.html
Copyright © 2020-2023  润新知