funsec mailing list archives
Re: Ghosts of steganography past
From: der Mouse <mouse () rodents-montreal org>
Date: Thu, 10 Dec 2009 15:19:13 -0500 (EST)
I sure don't see any hidden message in it. What am I missing?There's a whole bunch of dark pixels towards the center-right top.
You mean the rectangle that's 15x14+352+39, give or take a pixel or two? I see no particularly compelling reason to think this is anything other than exactly what it looks like: some small brownish thing on the wall, too small to see clearly at this resolution. Or do you mean the patch which looks like the standing person's hair? That too I see no reason to think is other than exactly what it appears to be: black hair. Or do you have external reason to think there is steganography going on there? If I actually wanted to steganographize in images, I'd do it much more subtly - as a first idea, force the low bit of the blue dc component of each DCT block to match my data (which of course would be encrypted, to make it look like noise). /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mouse () rodents-montreal org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B _______________________________________________ Fun and Misc security discussion for OT posts. https://linuxbox.org/cgi-bin/mailman/listinfo/funsec Note: funsec is a public and open mailing list.
Current thread:
- Ghosts of steganography past Yuhas, Steve (Dec 09)
- Re: Ghosts of steganography past Drsolly (Dec 10)
- Re: Ghosts of steganography past Valdis . Kletnieks (Dec 10)
- Re: Ghosts of steganography past der Mouse (Dec 10)
- Re: Ghosts of steganography past Valdis . Kletnieks (Dec 10)
- Re: Ghosts of steganography past der Mouse (Dec 10)
- Re: Ghosts of steganography past der Mouse (Dec 10)
- <Possible follow-ups>
- Re: Ghosts of steganography past RandallM (Dec 10)