Need help decompiling .LUAC file

[granados12]

Hello I want to share a little work, I am trying to decompile a .luac file, but it is not possible, I have already decompiled files with the Key and Signature, but I cannot find a way to get the Key and Signature of this file I have tried with the IDA program with the libcocos2dlua file .so but it does not work for me, what I want is to know which is the Key and Signature of the to decompile it, The key is apparently "newzs2" but I can't find the Signature

I attach file that I want to decompile

You must be registered to see links

attached file libcocos2dlua.so

You must be registered to see links

what I really want to decopile the file, or know the key and signature to be able to decopile, thank you very much