Gamestudio Links
Zorro Links
Newest Posts
Starting Zorro
by brax
Yesterday at 21:20
Sam Foster Sound | Experienced Indie Game Composer for Hire
by titanicpiano14
Yesterday at 19:09
Lost Key
by jcl
Yesterday at 13:58
Aum119 is ready
by Iglarion
Yesterday at 13:09
Zorro on Linux
by Nanitek
Yesterday at 11:08
AUM Magazine
Latest Screens
RPG PARTY
Triton Wing now available on Steam
AckCon'17: Lotter vs The World
Triton Wing
ZeaL
Who's Online
13 registered (Ch40zzC0d3r, AndrewAMD, Dico, ezaffa, NeoDumont, jenGs, Realspawn, Hredot, preacherX, jyd), 501 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
vivekkumar, Hale75, victrades, htj, anufriyev
17781 Registered Users
Topic Options
Rate This Topic
#466520 - 06/19/17 11:34 AES 128
Kartoffel Offline
Expert

Registered: 06/11/09
Posts: 2100
Loc: Bavaria, Germany
Hey there!

Here's a quick lite-c conversion of the AES-128 implementation found at: https://github.com/kokke/tiny-AES128-C (more info on AES)

Note that this AES implementation is probably not secure against a variety of attacks. On top of that the author provides NO warranty.
I'm using it to encrypt game files.

Important note from aes.c:
Code:
NOTE: String length must be evenly divisible by 16byte (str_len % 16 == 0)
You should pad the end of the string with zeros if this is not the case.


Download: AES128_lite-c_19-06-2017.zip (Dropbox)
Download: AES128_lite-c_19-06-2017.zip (update 1) (Dropbox)

Edit: small update: Added (CBC mode) functions to encrypt or decrypt from and into the same buffer, rather than having to use both an input and an output buffer.


Edited by Kartoffel (06/19/17 12:31)
_________________________
POTATO-MAN saves the day! - Random

Top
#466564 - 06/21/17 14:09 Re: AES 128 [Re: Kartoffel]
Ch40zzC0d3r Online
Serious User

Registered: 10/10/11
Posts: 1081
Loc: Germany
Just a note, using strong encryption for gamefiles is useless and simply just wasting time.
All files can easily be dumped live from memory.
You should use a simple XOR cypher with incrementing the steps.
Anyways thanks for the contribution.


Edited by Ch40zzC0d3r (06/21/17 14:09)

Top
#466573 - 06/21/17 20:10 Re: AES 128 [Re: Ch40zzC0d3r]
Kartoffel Offline
Expert

Registered: 06/11/09
Posts: 2100
Loc: Bavaria, Germany
Yes, I know about a few ways to do this, thanks for the info though. It's important to keep this in mind.
But I'm still sticking to my current approach since a simple xor encryption seems a bit too easy to break.
(in terms of being able to manipulate save files, textures, levels or other game data in a predictable manner)
_________________________
POTATO-MAN saves the day! - Random

Top


Moderator:  HeelX, Lukas, Rei_Ayanami, VeT 

Gamestudio download | chip programmers | Zorro platform | shop | resources | magazine | manual | support faq | bugs | beta features

oP group Germany GmbH | Birkenstr. 25-27 | 63549 Ronneburg / Germany | info (at) 3dgamestudio.net