大家帮忙看看这段源码。该如何处理

大家帮忙看看这段源码。。package flashclass.game.game{import com.adobe.crypto.*import flash.external.

大家帮忙看看这段源码。。
package flashclass.game.game
{
  import com.adobe.crypto.*;
  import flash.external.*;
  import flash.net.*;
  import flashclass.game.*;

  public class GameDataClass extends Object
  {
  private var _getDataComplete:Function;
  private var _saveDataComplete:Function;
  private var _serve:ServeClass;
  public var isLogin:Boolean = false;
  public var data:Object;
  public var card:int;
  public var qq:Number;
  public var score:Number;
  public var gameTime:Number;
  private var key:Number;
  public var weibo:int = 1;
  public var qzone:int = 1;
  public var timer:Number = 0;
  public var speed:Number = 60;
  public var nowScore:Number = 0;
  public var xml:XML;
  private static var instance:GameDataClass;

  public function GameDataClass()
  {
  this._serve = new ServeClass();
  return;
  }// end function

  public function checkLogin(param1:XMLList) : void
  {
  this.isLogin = ExternalInterface.call(param1.@iface);
  return;
  }// end function

  public function ifaceCtr(param1:XMLList, param2:String = "_self") : void
  {
  if (param1.@type == "js")
  {
  ExternalInterface.call(param1.@iface);
  }
  else
  {
  navigateToURL(new URLRequest(param1.@iface), param2);
  }
  return;
  }// end function

  public function getData(param1:String, param2:Function = null) : void
  {
  this._serve.resetData();
  this._serve.setDataFormat();
  this._serve.sendData(param1 + "?rnd=" + Math.random(), this.getDataComplete);
  this._getDataComplete = param2;
  return;
  }// end function

  private function getDataComplete(param1:Object) : void
  {
  var _loc_2:* = param1;
  if (_loc_2.code != 0)
  {
  ExternalInterface.call(this.xml.code.@iface, _loc_2.code);
  return;
  }
  this.data = _loc_2;
  this.card = _loc_2.data.card;
  this.qq = _loc_2.data.qq;
  this.score = _loc_2.data.score;
  this.gameTime = _loc_2.data.gameTime;
  this.key = _loc_2.data.key;
  if (this._getDataComplete != null)
  {
  this._getDataComplete();
  }
  return;
  }// end function

  public function saveData(param1:String, param2:Object, param3:Function = null) : void
  {
  var _loc_4:* = Math.round(this.timer * 10) / 10;
  var _loc_5:* = String(this.qq) + _loc_4 + String(this.key) + this.card + "tencent20111128";
  this._serve.resetData();
  this._serve.setDataFormat();
  this._serve.addFormField("shareWeibo", param2.shareWeibo);
  this._serve.addFormField("shareQzone", param2.shareQzone);
  this._serve.addFormField("shareFeeds", param2.shareFeeds);


  this._serve.addFormField("gameTime", _loc_4);
  this._serve.addFormField("card", this.card);
  this._serve.addFormField("key", MD5.hash(_loc_5));
  this._serve.sendData(param1, this.saveDataComplete);
  this._saveDataComplete = param3;
  return;
  }// end function

  private function saveDataComplete(param1:Object) : void
  {
  if (this._saveDataComplete != null)
  {
  this._saveDataComplete(param1);
  }
  return;
  }// end function

  public function cardUpdata(param1:String, param2:Function = null) : void
  {
  this._serve.resetData();
  this._serve.setDataFormat();
  this._serve.sendData(param1 + "?rnd=" + Math.random(), this.upDataComplete);
  this._getDataComplete = param2;
  return;
  }// end function

  private function upDataComplete(param1:Object) : void
  {
  var _loc_2:* = param1;
  if (!_loc_2.success)
  {
  navigateToURL(new URLRequest("javascript:*****(\'" + _loc_2.info + "\');"), "_self");
  this.ifaceCtr(this.xml.gamepage, this.xml.gamepage.@target);
  return;
  }
  this.card = _loc_2.card;
  if (this._getDataComplete != null)
  {
  this._getDataComplete();
  }
  return;
  }// end function

  public static function getInstance() : GameDataClass
  {
  if (instance == null)
  {
  instance = new GameDataClass;
  }
  return instance;
  }// end function

  }
}


请问下里面的 this._serve.addFormField("key", MD5.hash(_loc_5)); 这个key 是怎么算出来的  
抓包的数据

感谢啊 。。

-----------------------------7db1851cd1158
Content-Disposition: form-data; name="shareWeibo"
0
-----------------------------7db1851cd1158
Content-Disposition: form-data; name="shareQzone"
1
-----------------------------7db1851cd1158
Content-Disposition: form-data; name="shareFeeds"
null
-----------------------------7db1851cd1158
Content-Disposition: form-data; name="gameTime"
192.6
-----------------------------7db1851cd1158
Content-Disposition: form-data; name="card"
0
-----------------------------7db1851cd1158
Content-Disposition: form-data; name="key"
f2827c8e4b82323c457017cb019de667
-----------------------------7db1851cd1158--

[解决办法]
f2827c8e4b82323c457017cb019de667=MD5.hash(String(this.qq) + (Math.round(this.timer * 10) / 10) + String(this.key) + this.card + "tencent20111128")