Difference between revisions of "OpenChaos/Hacking Digital Watermarks"

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by Tim TimeWaster tim@timit.nl
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by Tim TimeWaster (tim @ timit.nl)
 +
 
 +
Tim gab am 21.10.05 einen interessanten Vortrag "Hacking Watermarks" im C4.
 +
Wir haben die Folien online.
 +
 
 
=== Slides ===
 
=== Slides ===
 
http://w8n.koeln.ccc.de/media/slides/oc_watermark_21102005.pdf
 
http://w8n.koeln.ccc.de/media/slides/oc_watermark_21102005.pdf
 
===klaphek projects===
 
<I>commercial break</I> [http://www.klaphek.net 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
 

Revision as of 00:28, 22 October 2005

by Tim TimeWaster (tim @ timit.nl)

Tim gab am 21.10.05 einen interessanten Vortrag "Hacking Watermarks" im C4. Wir haben die Folien online.

Slides

http://w8n.koeln.ccc.de/media/slides/oc_watermark_21102005.pdf