【cookie】asp.net中使用cookie与md5加密实现记住密码功能的实现代码-md5加密-记住密码

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asp.net中使用cookie与md5加密实现记住密码功能的实现代码

//设置，删除Cookie
//provider jb51.net
        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);
        }
    }

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