using?System;
using?System.Collections.Generic;
using?System.Web;
using?System.Web.UI;
using?System.Web.UI.WebControls;
using?System.Data;
using?System.Security.Cryptography;
using?System.IO;
using?System.Text;

namespace?FFCS.EIS.Questionnaire
{
????public?partial?class?WebForm1?:?System.Web.UI.Page?ICallbackEventHandler
????{
????????protected?void?Page_Load（object?sender?EventArgs?e）
????????{
????????????//?把js的des加密函數寫入客戶端
????????????Clientscript.RegisterClientscriptBlock（this.GetType（）?“beinetDesJs“?GetJsDesMethod（）?true）;
????????}

????????#region?ICallbackEventHandler?成員
????????string?m_callback;
????????public?string?GetCallbackResult（）
????????{
????????????return?m_callback;
????????}

????????///?

????????///?eventArgument參數由3部分組成，以?_?連接
????????///?第一部分：0為加密；1為解密
????????///?第二部分：密鑰
????????///?第三部分：加密或解密的字符串
????????///?

????????///?
????????public?void?RaiseCallbackEvent（string?eventArgument）
????????{
????????????if?（string.IsNullOrEmpty（eventArgument））
????????????????return;

????????????string[]?beinetarr?=?eventArgument.Split（‘_‘）;
????????????if?（beinetarr.Length?????????????????return;
????????????if?（beinetarr.Length?>?3）
????????????????beinetarr[2]?=?eventArgument.Substring（eventArgument.IndexOf（‘_‘?beinetarr[0].Length?+?1））;

????????????//?密鑰?或?字符串為空時，退出
????????????if?（string.IsNullOrEmpty（beinetarr[1]）?||?string.IsNullOrEmpty（beinetarr[2]））
????????????????return;

????????????string?beinettype?=?beinetarr[0];
????????????string?beinetkey?=?beinetarr[1];
????????????string?beinetstr?=?beinetarr[2];
????????????if?（beinettype?==?“1“）
????????????{
????????????????m_callback?=?uncMe（beinetstr?beinetkey）;
????????????}
????????????else
????????????{
????????????????m_callback?=?encMe（beinetstr?beinetkey）;
????????????}
????????}

????????#endregion

????????#region?加密解密及相關方法

????????#region?配合JS用的C#版DES加解密方法及相關函數

????????///?

????????///?加密測試函數
????????///?

????????///?待加密的字符串
????????///?密鑰
????????///?
????????public?static?string?encMe（string?beinetstr?string?beinetkey）
????????{
????????????if?（string.IsNullOrEmpty（beinetkey））
????????????????return?string.Empty;

????????????return?stringToHex（des（beinetkey?beinetstr?true?false?string.Empty））;
????????}

????????///?

????????///?解密測試函數
????????///?

????????///?待解密的字符串
????????///?密鑰
????????///?
????????public?static?string?uncMe（string?beinetstr?string?beinetkey）
????????{
????????????if?（string.IsNullOrEmpty（beinetkey））
????????????????return?null;
????????????string?ret?=?des（beinetkey?HexTostring（beinetstr）?false?false?string.Empty）;
????????????return?ret;
????????}

????????///?