Cocos LUA encryption and decryption obfuscation (version cocos3.4)

Cocos Luacompile

• Cocos Luacompile
  • Overview
  • Usage
  • Available Arguments
  • Samples

Overview

Compile the.luafiles to.luac.

Usage

cocos luacompile [arguments]

Available Arguments

Arg	Available Value	Sample	Description	necessary
-H,--help	-	-	Show the help message and exit	No
-S,--src	SOURCE Directory	./projects/MyLuaGame/src	Specify source directory of LUA files needed to be compiled.	Yes
-D,--DST	Destination Directory	./projects/MyLuaGame/src	Specify destination directory bytecode files to be stored.	Yes
-E,--encrypt	-	-	Enable the encrypting of Lua files.	No
-K,--encryptkey	Any string	MyLuaKey	Specify the Encrypt key for the encrypting of Lua scripts. It's only take effect when is-e, --encryptenabled. Default value is2dxLua.	No
-B,--encryptsign	Any string	MyLuaSign	Specify the Encrypt sign for the encrypting of Lua scripts. It's only take effect when is--encryptenabled. Default value isXXTEA.	No

Samples

• cocos luacompile -h. Show the help message.
• cocos luacompile -s ./projects/MyLuaGame/src -d ./projects/MyLuaGame/src -e -k MyLuaKey -b MyLuaSign
  Compile the in*.luadirectory./projects/MyLuaGame/srcto*.luac. Then encrypt the Luac files with key are and sign areMyLuaKeyMyLuaSign.

We have some problems during the experiment, supporting 64-bit solutions:

out/-e-k testkey123456-b testSign123456--disable-compile

The whole process and test engineering are given below

1.0 Cocos Luacompile usage

I use the ordinary cocos2d lua, useless quick,quick seems to be able to the entire resources including images and audio are encrypted, packaged into a zip. But I didn't use quick. Look at the next Luacompile help, relatively simple AH.

Set up an Out folder at the root of the project, and then try it with this command:

Cocos luacompile-s src/out /

A lot of luac files are seen in the Out directory, which is smoother than expected. As the command says, the subdirectory is supported. Online said Luac will still be anti-compilation. It adds a key.

out/-e-k testkey123456-b testSign123456

He uses the Xxtea encryption algorithm, can see this article "Xxtea Reversible encryption and decryption algorithm C + + C # compatible version"

You also need to add setxxteakeyandsign to the Applicationdidfinishlaunching method of the AppDelegate.cpp file . This is the first pit where the Luacompile help did not mention it.

LuaStack* stack = engine->getLuaStack();
    stack->setXXTEAKeyAndSign("testKey123456", strlen("testKey123456"), "testSign123456", strlen("testSign123456"));

    if (engine->executeScriptFile("src/main.lua")) {
        return false;

2.64bit is not supported

The second pit is coming: Just beginning to run well in the Iphone4s simulator, iphone5s is dark. It turned out that Lua compiled, although faster, but not yet support 64-bit system, it is said Cocos2d end will give Luajit 64-bit solution, because Apple asked for AH.

and then because of the problem I got stuck for a while. Search on the Internet has no results, it is recommended to use quick. The game is finished, and it's a bit troublesome to turn quick.

suddenly notice the last option in Luacompile Help: –disable-compile, then change the command to the following:

out/-e-k testkey123456-b testSign123456--disable-compile

Also comes out luac files, but simply encrypts with Xxtea. This little game is completely enough.

Cocos LUA encryption and decryption obfuscation (version cocos3.4)