使用xxtea加密或者解密文件

预览

将 .lua 文件编译为 .luac 所涉及到的加密方法

环境配置

如果是cocos2d-x V3.3 或者更高级的版本, 你需要配置 cocos consol(请查看 https://github.com/cocos2d/cocos2d-x/blob/v3/README.md)

如果版本是cocos2d-x V2.2.6, 你应该安装 Python, 然后设置Python的环境变量.

使用方法

如果是cocos2d-x V3.3 或者更高级的版本, 在终端里输入 cocos luacompile [arguments]

如果版本是cocos2d-x V2.2.6, 在终端里，首先 cd 进目录tools/cocos2d-console/console, 然后输入 ./cocos2d.py luacompile [arguments] .

可用的参数（在终端里）

参数参数的值例子描述是否必须-h, --help--Show the help message and exitno-v, --verbose--verbose outputno-s, --srcsource directory./projects/MyLuaGame/srcSpecify source directory of lua files needed to be compiled,support mutiple source directoryyes-d, --dstdestination directory./projects/MyLuaGame/dstSpecify destination directory which bytecode files to be stored.yes-e, --encryptboolTrueWhether or not to encrypt lua files.no-k, --encryptkeyany stringMyLuaKeySpecify the encrypt key for encrypting lua scripts. It's only take effect when -e, --encrypt is enabled. Default value is 2dxLua.no-b, --encryptsignany stringMyLuaSignSpecify the encrypt sign for encrypting lua scripts. It's only take effect when --encrypt is enabled. Default value is XXTEA.no--disable-compileboolTrueWhether or not to compile lua scriptsno

例子

 使用luacompile时，有以下几种方式

方式cocos2d-x 版本描述cocos luacompile -hcocos2d-x V3.3 or higher versionShow the help messagecocos luacompile -s src_dir -d dst_dircocos2d-x V3.3 or higher versionPrecompile the Lua files in the src_dir directory to bytecode files which luajit supports, then store them in the dst_dir directory by the same directory structure.cocos luacompile -s src_dir -d dst_dir -e Truecocos2d-x V3.3 or higher versionPrecompile the Lua files in the src_dir directory to bytecode files which luajit supports, then encrypt this bytecoed files by xxtea.The key and sign for encrypting are 2dxLuaand XXTEA by default. By adding  -k xxx -b xxx' to the command, developers can change thekeyandsign,-k xxxset the key value and-b xxx` set the sign value. The encrypted files are stored in the dst_dir directory by the same directory structure.cocos luacompile -s src_dir -d dst_dir -e True --disable-compile Truecocos2d-x V3.3 or higher versionEncrypt the Lua files in the src_dir by xxtea, then store them in the dst_dir directory by the same directory structure. The key and sign for encrypting are 2dxLua and XXTEA by default. By adding  -k xxx -b xxx' to the command, developers can change thekeyandsign,-k xxxset the key value and-b xxx` set the sign value. This command is mainly used to make a set of encrypted files run both 32bit and 64bit iOS devices at the same time. Because Apple demand new app must support 64bit,but the stable luajit doesn't support the arm64bit, so providing this command to encrypt the lua files directly../cocos2d.py luacompile -hcocos2d-x V2.2.6Show the help message./cocos2d.py luacompile -s src_dir -d dst_dircocos2d-x V2.2.6Precompile the Lua files in the src_dir directory to bytecode files which luajit supports, then store them in the dst_dir directory by the same directory structure../cocos2d.py luacompile -s src_dir -d dst_dir -e Truecocos2d-x V2.2.6Precompile the Lua files in the src_dir directory to bytecode files which luajit supports, then encrypt this bytecoed files by xxtea.TThe key and sign for encrypting are 2dxLua and XXTEA by default. By adding  -k xxx -b xxx' to the command, developers can change thekeyandsign,-k xxxset the key value and-b xxx` set the sign value. The encrypted files are stored in the dst_dir directory by the same directory structure../cocos2d.py luacompile -s src_dir -d dst_dir -e True --disable-compile Truecocos2d-x V2.2.6Encrypt the Lua files in the src_dir by xxtea, then store them in the dst_dir directory by the same directory structure. The key and sign for encrypting are 2dxLua and XXTEA by default, by adding  -k xxx -b xxx' to the command, developers can change thekeyandsign,-k xxxset the key value and-b xxx` set the sign value. This command is mainly used to make a set of encrypted files run both 32bit and 64bit iOS devices at the same time.

注意: 如果在游戏里使用了xxtea加密，你必须调用在c++代码里，调用LuaStack里的setXXTEAKeyAndSign方法以设置key和sign来解密文件。

具体使用

加密lua为luac文件

cocos luacompile -s ${PWD}/src -d ${PWD}/src_et -e -k mXjv7U5dUl1aMTVV_xianlai -b SQLLiteData --disable-compile

解密：

LuaStack* stack = engine->getLuaStack();stack->setXXTEAKeyAndSign("mXjv7U5dUl1aMTVV_xianlai", strlen("mXjv7U5dUl1aMTVV_xianlai"), "SQLLiteData", strlen("SQLLiteData"));