[asp.net] 对指定字符串进行MD5加密

        /// <summary>
        /// 根据配置对指定字符串进行 MD5 加密
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static string GetMD5(string s)
        {
            //md5加密
            s = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(s, "md5").ToString();

            return s.ToLower().Substring(8, 16);
        }

登陆验证：

        protected void btnLogin_Click(object sender, EventArgs e)
        {
            if (!Utils.CheckVilidateCode(txtVilidateCode.Text))
            { 
                //验证码错误;
                return;
            }

            AdminUser admin = AdminUser.GetModel(txtName.Text.Trim());
            if (admin == null)
            { 
                //提示用户不存在
                return;
            }
            if (admin.Pass != Utils.GetMD5(txtPass.Text))
            { 
                //提示密码错误;
                return;
            }
            AdminUser.CurrentAdmin = admin;
            Response.Redirect("Admin_Index.aspx");
        }