cocos2dx lua 加密

cocos2dx lua已经集成了对lua脚本的加解密，见AppDelegate.cpp.

[cpp] view plain copy

1. LuaStack*stack=engine->getLuaStack();
2. stack->setXXTEAKeyAndSign("123",strlen("123"),"cloud",strlen("cloud"));

它是通过XXTEA来加解密的。参数，key,keyLen,signment,signmentLen。它的签名作用可能是用来判断文件是否经过加密的。

好，我们来对文件加密。打开cocos2d-x\external\xxtea文件夹，调用相关函数xxtea_encrypt进行加密，最后在文件开始位置，写上签名就可以了。我把相关操作封装成一个python文件。可以直接调用。

[python]

importxxteaModule
1. importos
3. defReadFile(filePath):
4. file_object=open(filePath,'rb')
5. all_the_text=file_object.read()
6. file_object.close()
7. returnall_the_text
8. defWriteFile(filePath,all_the_text):
9. 'wb')
10. file_object.write(all_the_text)
12. defBakFile(filePath,all_the_text):
13. file_bak=filePath[:len(filePath)-3]+'bak'
14. WriteFile(file_bak,all_the_text)
15. defListLua(path):
16. fileList=[]
17. forroot,dirs,filesinos.walk(path):
18. foreachfilesinfiles:
19. ifeachfiles[-4:]=='.lua':
20. fileList.append(root+'/'+eachfiles)
21. returnfileList
22. defEncodeWithXxteaModule(filePath,key,signment):
23. all_the_text=ReadFile(filePath)
24. ifall_the_text[:len(signment)]==signment:
25. return
26. #baklua
27. BakFile(filePath,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> encrypt=xxteaModule.encrypt(all_the_text,key)
28. signment=signment+encrypt
29. WriteFile(filePath,signment)
30. defEncodeLua(projectPath,248)"> path=projectPath+'/src'
31. fileList=ListLua(path)
32. forfilesinfileList:
33. EncodeWithXxteaModule(files,153); font-weight:bold; background-color:inherit">defFixCpp(projectPath,248)"> filePath=projectPath+'/frameworks/runtime-src/Classes/AppDelegate.cpp'
34. all_the_text=ReadFile(filePath)
35. #bakcpp
36. BakFile(filePath,all_the_text)
37. pos=all_the_text.find('stack->setXXTEAKeyAndSign')
38. left=all_the_text.find('(',pos)
39. right=all_the_text.find(';',pos)
40. word=str.format('("%s",strlen("%s"),"%s",strlen("%s"))'%(key,signment))
41. all_the_text=all_the_text[:left]+word+all_the_text[right:-1]
42. projectPath="D:/cocosIDEWork/aseGame/"
43. key="123"
44. signment="cloud"
45. EncodeLua(projectPath,signment)
46. FixCpp(projectPath,153); font-weight:bold; background-color:inherit">print"encodeok"