OpenChaos/Hacking Digital Watermarks

From C4 Wiki

Revision as of 21:33, 21 October 2005 by Mario Manno (talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Jump to: navigation, search

by Tim TimeWaster tim@timit.nl

Slides

klaphek projects

commercial break Klaphek, a cool hacker magazine and group

Bluetooth http://thetoy.co.uk is your wet dream
prepeaid web-only GPRS
smartcards & magstripe cards
whatever we encouter on our way

Digital Watermarks

DWM: "inivisible" information embedded in data

Examples:

use LSBs (low significant bits)
add high freq (pseudo ) nouse / spread
echo watermark
MPEG stream watermarking

Retrieved from "https://wiki.koeln.ccc.de/index.php?title=OpenChaos/Hacking_Digital_Watermarks&oldid=8154"