Re: [pygame] encrypt/decrypt zip/unzip

[Vincent Michel <vxgmichel@xxxxxxxxx>]

"the password is obfuscated and saved to a py file"
I'm curious about this part, how would you do that?
Do you plan to distribute only your byte code and hope that no one will
reverse it?

Also, why do you need a double encryption? If you want to prevent people
from browsing your package to find the end screen or whatever, isn't
your first encryption enough?

Anyway I think it's an interesting question, I mean, how important is it
to obfuscate game data.

Vincent

On Mon, 2014-08-25 at 19:38 +0530, diliup gabadamudalige wrote:
> Having experimented with various methods to obfuscate image, audio and
> text files, store them in a zip file pw protect and then retrieving on
> demand  I finally did this.
> 
> 
> coder= a long string with a lot of characters ( written in a separate
> py file)
> 
> 
> strA = XOR(from_disk.read(), coder)
> str1 = XOR(strA,another_coder))
> 
> 
> encryption twice to obfuscate even more.
> 
> 
> with open(code_to_dir, "wb") as to_disk:
> to_disk.write(str1)
> 
> 
> then i used win rar to write these files to disk as a pw protected zip
> file with store as the comp. method.
> 
> 
> the password is obfuscated and saved to a py file
> 
> 
> Retrieving the files from inside the zip file was the only hitch as
> the python extract routine took a long time.
> 
> 
> this was solved by a great package at
> https://pypi.python.org/pypi/czipfile#downloads 
> 
> 
> retrieval time increase by nearly/more than/almost 200 %.
> 
> 
> I would like to have your input on the above.
> 
> 
>   
> Diliup Gabadamudalige
> 
> http://www.diliupg.com
> http://soft.diliupg.com/
> 
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