Well, well. I was just looking at this.
I won't go into detail, but you can store up to 209 bytes in a 256 colour
GIF. It's all to do with the fact that you can shuffle the order of the
colour map. Of course you can encrypt / compress the data however you like,
so your 209 bytes may or may not be enough to store the file you want.
Check: http://www.darkside.com.au/gifshuffle/
I should credit the AntiOnline mailing list (www.antionline.com), since
that's where I saw the info a couple of weeks ago. Good website, too.
And the process is more accurately called "steganography".
--
Ben Nagy
Network Consultant, CPM&S Group of Companies
Direct Dial: (08) 8422 8319 Mobile: (0414) 411 520
-----Original Message-----
From: Phillips, Steven W (Steve), GOVMK [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 27, 1999 9:50 AM
To: [EMAIL PROTECTED]
Subject: Hide and Seek Programs
Does anyone have information on programs that can be used to hide files in
GIF images? I have never seen this done, but have been told that they are
call Hide and Seek programs. If anyone knows how this is done and whether
or not the presence of a file in a GIF image can be detected using some sort
of file scanner, please let me know.
TIA,
Steven Phillips
-
[To unsubscribe, send mail to [EMAIL PROTECTED] with
"unsubscribe firewalls" in the body of the message.]
-
[To unsubscribe, send mail to [EMAIL PROTECTED] with
"unsubscribe firewalls" in the body of the message.]
