[casual_games] Encrypting text files

[James C. Smith]

I would also recommend using ZLib.  All the games I have worked on including
Ricochet and Big Kahuna use ZLib to compress the save game files and many of
the source assets such as level definitions.  The space savings is a nice
side effect, but the real reason we use ZLib is to just obscure the file
contents so they cannot be casually edited.   The ZLib API is very simple to
use. We integrated into our file system abstraction layer so that any file
can be transparently (to the game code) compressed on load and/or save.  

 

James C. Smith

Producer / Lead Programmer

Reflexive Entertainment

 

From: casual_games-bounces at igda.org [mailto:casual_games-bounces at igda.org]
On Behalf Of Ricky Haggett
Sent: Tuesday, January 15, 2008 4:08 AM
To: 'IGDA Casual Games SIG Mailing List'
Subject: [casual_games] Encrypting text files

 

 

Our engine makes extensive use of xml and lua to mark up GUI, provide
scripting, level data, save game files etc.

 

.

 

What I'm after is a software layer that sits between the engine and the file
system, encrypting text files on write (for writing save data) and
decrypting on read. There'd also need to be an offline tool which encrypts
text files generated by hand (e.g. those containing scripting).

 

Can anyone recommend something suitable (in c / c++)?

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