先加密游戏资源然后

改cocos2dx底层代码，在读取的时候进行解密

1 unsigned char* CCFileUtils::getFileData(const char* pszFileName, const char* pszMode, unsigned long * pSize) 2 { 3     unsigned char * pBuffer = NULL; 4     CCAssert(pszFileName != NULL && pSize != NULL && pszMode != NULL, "Invalid parameters."); 5     *pSize = 0; 6     do 7     { 8         // read the file from hardware 9         std::string fullPath = fullPathForFilename(pszFileName);10         FILE *fp = fopen(fullPath.c_str(), pszMode);11         CC_BREAK_IF(!fp);12         13         fseek(fp,0,SEEK_END);14         *pSize = ftell(fp);15         fseek(fp,0,SEEK_SET);16         pBuffer = new unsigned char[*pSize];17         *pSize = fread(pBuffer,sizeof(unsigned char), *pSize,fp);18 19         decode(pBuffer, *pSize);    //在此调用解密函数20         fclose(fp);21     } while (0);22     23     if (! pBuffer)24     {25         std::string msg = "Get data from file(";26         msg.append(pszFileName).append(") failed!");27         28         CCLOG("%s", msg.c_str());29     }30     return pBuffer;31 }