Re: obfuscating / protecting LUA code

[Paul Smith <paullocal@...>]

At 12:10 28/04/2006, you wrote:
> Hi,
>
> I'm working on a piece of software in LUA that might be part of a 
> commercial application later on (or might become the application by 
> itself, since LUA is so nice...) and I'm trying to find out if there is a 
> good way to protect LUA code from the outside world? Of course I could 
> compile it using luac, but that wouldn't stop somebody from disassembling 
> it and getting the source code?

Well, as some totally un-thought-through thoughts...

- You could encrypt your script however you want and save it as a binary 
file. Then, when you want to run it, load the binary file, decrypt it to a 
long string and pass it to luaL_loadbuffer.

- You could change the order of the 'RESERVED' enum in llex.h (read the 
comment before that and do what it says). then compile the code. That way I 
guess an 'off the shelf' decompiler will probably have trouble 
understanding the compiled code.




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