我说的是一款没有得分上限的动作游戏，也没有办法通过重玩动作等方式来验证服务器上的分数。
我真正需要的是在Flash/PHP中最强的加密，以及一种防止人们调用PHP页面而不是通过我的Flash文件的方法。我在过去尝试了一些简单的方法，对一个分数进行多次调用，完成一个校验和/斐波那契序列等，也用Amayeta SWF加密混淆SWF，但他们最终都被黑客入侵了。
感谢StackOverflow的响应，我现在从Adobe找到了更多的信息- http://www.adobe.com/devnet/flashplayer/articles/secure_swf_apps_12.html和https://github.com/mikechambers/as3corelib -我认为我可以使用加密。但我不确定这是否能让我绕过CheatEngine。
我需要知道AS2和AS3的最佳解决方案，如果它们是不同的。
主要的问题似乎是TamperData和LiveHTTP报头，但我知道还有更高级的黑客工具，比如CheatEngine(感谢Mark Webster)
当前回答
I made kind of workaround... I had a gave where scores incremented ( you always get +1 score ). First, I started to count from random num (let's say 14 ) and when I display the scores, just showed the scores var minus 14. This was so if the crackers are looking for example for 20, they won't find it ( it will be 34 in the memory ). Second, since I know what the next point should be... I used adobe crypto library, to create the hash of what the next point should be. When I have to increment the scores, I check if the hash of the incremented scores is equal to the hash is should be. If the cracker have changed the points in the memory, the hashes are not equal. I perform some server-side verification and when I got different points from game and from the PHP, I know that cheating were involved. Here is snippet ot my code ( I'm using Adobe Crypto libraty MD5 class and random cryptography salt. callPhp() is my server side validation )
private function addPoint(event:Event = null):void{
trace("expectedHash: " + expectedHash + " || new hash: " + MD5.hash( Number(SCORES + POINT).toString() + expectedHashSalt) );
if(expectedHash == MD5.hash( Number(SCORES + POINT).toString() + expectedHashSalt)){
SCORES +=POINT;
callPhp();
expectedHash = MD5.hash( Number(SCORES + POINT).toString() + expectedHashSalt);
} else {
//trace("cheat engine usage");
}
}
使用这种技术+ SWF混淆，我能够阻止饼干。此外，当我将分数发送到服务器端时，我使用自己的小型加密/解密功能。类似这样的代码(服务器端代码不包括在内，但你可以看到算法并用PHP编写):
package {
import bassta.utils.Hash;
public class ScoresEncoder {
private static var ranChars:Array;
private static var charsTable:Hash;
public function ScoresEncoder() {
}
public static function init():void{
ranChars = String("qwertyuiopasdfghjklzxcvbnm").split("")
charsTable = new Hash({
"0": "x",
"1": "f",
"2": "q",
"3": "z",
"4": "a",
"5": "o",
"6": "n",
"7": "p",
"8": "w",
"9": "y"
});
}
public static function encodeScore(_s:Number):String{
var _fin:String = "";
var scores:String = addLeadingZeros(_s);
for(var i:uint = 0; i< scores.length; i++){
//trace( scores.charAt(i) + " - > " + charsTable[ scores.charAt(i) ] );
_fin += charsTable[ scores.charAt(i) ];
}
return _fin;
}
public static function decodeScore(_s:String):String{
var _fin:String = "";
var decoded:String = _s;
for(var i:uint = 0; i< decoded.length; i++){
//trace( decoded.charAt(i) + " - > " + charsTable.getKey( decoded.charAt(i) ) );
_fin += charsTable.getKey( decoded.charAt(i) );
}
return _fin;
}
public static function encodeScoreRand(_s:Number):String{
var _fin:String = "";
_fin += generateRandomChars(10) + encodeScore(_s) + generateRandomChars(3)
return _fin;
}
public static function decodeScoreRand(_s:String):Number{
var decodedString:String = _s;
var decoded:Number;
decodedString = decodedString.substring(10,13);
decodedString = decodeScore(decodedString);
decoded = Number(decodedString);
return decoded;
}
public static function generateRandomChars(_length:Number):String{
var newRandChars:String = "";
for(var i:uint = 0; i< _length; i++){
newRandChars+= ranChars[ Math.ceil( Math.random()*ranChars.length-1 )];
}
return newRandChars;
}
private static function addLeadingZeros(_s:Number):String{
var _fin:String;
if(_s < 10 ){
_fin = "00" + _s.toString();
}
if(_s >= 10 && _s < 99 ) {
_fin = "0" + _s.toString();
}
if(_s >= 100 ) {
_fin = _s.toString();
}
return _fin;
}
}//end
}
然后我把这个变量和其他的假变量一起发送，它就会迷失在其中…对于小型flash游戏来说，这是一项艰巨的任务，但当涉及到奖品时，有些人就会变得贪婪。如果你需要任何帮助，给我写个便条。
欢呼,图标
其他回答
你说的是所谓的“客户信任”问题。因为客户端(在这种现金中，运行在浏览器中的SWF)正在做它设计要做的事情。保存高分。
问题是，你想要确保“保存分数”请求来自你的flash电影，而不是任意的HTTP请求。一种可能的解决方案是在请求时(使用flasm)将服务器生成的令牌编码到SWF中，该令牌必须随请求一起保存高分。一旦服务器保存了该分数，令牌就过期了，不能再用于请求。
这样做的缺点是，用户每次加载flash电影只能提交一个高分——你不得不强迫他们刷新/重新加载SWF，然后他们才能再次播放新的分数。
您不能相信客户端返回的任何数据。验证需要在服务器端执行。我不是游戏开发者，但我确实制作商业软件。在这两种情况下，都可能涉及金钱，而且人们会破坏客户端混淆技术。
可能会定期将数据发送回服务器并进行一些验证。不要把注意力集中在客户端代码上，即使您的应用程序就在客户端代码上。
通过AMFPHP与后端通信可能是个好主意。它至少应该阻止那些试图通过浏览器控制台推送结果的懒人。
想要得到你想要的是不可能的。Flash应用程序的内部总是部分可访问的，特别是当你知道如何使用像CheatEngine这样的东西时，这意味着无论你的网站和浏览器<->服务器通信有多安全，它仍然会相对简单地克服。
I made kind of workaround... I had a gave where scores incremented ( you always get +1 score ). First, I started to count from random num (let's say 14 ) and when I display the scores, just showed the scores var minus 14. This was so if the crackers are looking for example for 20, they won't find it ( it will be 34 in the memory ). Second, since I know what the next point should be... I used adobe crypto library, to create the hash of what the next point should be. When I have to increment the scores, I check if the hash of the incremented scores is equal to the hash is should be. If the cracker have changed the points in the memory, the hashes are not equal. I perform some server-side verification and when I got different points from game and from the PHP, I know that cheating were involved. Here is snippet ot my code ( I'm using Adobe Crypto libraty MD5 class and random cryptography salt. callPhp() is my server side validation )
private function addPoint(event:Event = null):void{
trace("expectedHash: " + expectedHash + " || new hash: " + MD5.hash( Number(SCORES + POINT).toString() + expectedHashSalt) );
if(expectedHash == MD5.hash( Number(SCORES + POINT).toString() + expectedHashSalt)){
SCORES +=POINT;
callPhp();
expectedHash = MD5.hash( Number(SCORES + POINT).toString() + expectedHashSalt);
} else {
//trace("cheat engine usage");
}
}
使用这种技术+ SWF混淆，我能够阻止饼干。此外，当我将分数发送到服务器端时，我使用自己的小型加密/解密功能。类似这样的代码(服务器端代码不包括在内，但你可以看到算法并用PHP编写):
package {
import bassta.utils.Hash;
public class ScoresEncoder {
private static var ranChars:Array;
private static var charsTable:Hash;
public function ScoresEncoder() {
}
public static function init():void{
ranChars = String("qwertyuiopasdfghjklzxcvbnm").split("")
charsTable = new Hash({
"0": "x",
"1": "f",
"2": "q",
"3": "z",
"4": "a",
"5": "o",
"6": "n",
"7": "p",
"8": "w",
"9": "y"
});
}
public static function encodeScore(_s:Number):String{
var _fin:String = "";
var scores:String = addLeadingZeros(_s);
for(var i:uint = 0; i< scores.length; i++){
//trace( scores.charAt(i) + " - > " + charsTable[ scores.charAt(i) ] );
_fin += charsTable[ scores.charAt(i) ];
}
return _fin;
}
public static function decodeScore(_s:String):String{
var _fin:String = "";
var decoded:String = _s;
for(var i:uint = 0; i< decoded.length; i++){
//trace( decoded.charAt(i) + " - > " + charsTable.getKey( decoded.charAt(i) ) );
_fin += charsTable.getKey( decoded.charAt(i) );
}
return _fin;
}
public static function encodeScoreRand(_s:Number):String{
var _fin:String = "";
_fin += generateRandomChars(10) + encodeScore(_s) + generateRandomChars(3)
return _fin;
}
public static function decodeScoreRand(_s:String):Number{
var decodedString:String = _s;
var decoded:Number;
decodedString = decodedString.substring(10,13);
decodedString = decodeScore(decodedString);
decoded = Number(decodedString);
return decoded;
}
public static function generateRandomChars(_length:Number):String{
var newRandChars:String = "";
for(var i:uint = 0; i< _length; i++){
newRandChars+= ranChars[ Math.ceil( Math.random()*ranChars.length-1 )];
}
return newRandChars;
}
private static function addLeadingZeros(_s:Number):String{
var _fin:String;
if(_s < 10 ){
_fin = "00" + _s.toString();
}
if(_s >= 10 && _s < 99 ) {
_fin = "0" + _s.toString();
}
if(_s >= 100 ) {
_fin = _s.toString();
}
return _fin;
}
}//end
}
然后我把这个变量和其他的假变量一起发送，它就会迷失在其中…对于小型flash游戏来说，这是一项艰巨的任务，但当涉及到奖品时，有些人就会变得贪婪。如果你需要任何帮助，给我写个便条。
欢呼,图标
