Difference between revisions of "OpenChaos/Hacking Digital Watermarks"

From C4 Wiki
Jump to: navigation, search
 
(6 intermediate revisions by 2 users not shown)
Line 1: Line 1:
by Tim TimeWaster tim@timit.nl
+
by Tim TimeWaster (tim @ timit.nl)
  
===klaphek projects===
+
Tim gab am 21.10.05 einen interessanten Vortrag "Hacking Digital Watermarks" im C4.
<I>commercial break</I> [http://www.klaphek.net Klaphek], a cool hacker magazine and group
+
Wir haben die Folien online.
  
*Bluetooth http://thetoy.co.uk is your wet dream
+
=== Slides ===
*prepeaid web-only GPRS
+
http://koeln.ccc.de/media/open_chaos/oc_watermark_21102005.pdf
*smartcards & magstripe cards
+
[[Category:OpenChaos]]
*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
 

Latest revision as of 09:21, 28 July 2006

by Tim TimeWaster (tim @ timit.nl)

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

Slides

http://koeln.ccc.de/media/open_chaos/oc_watermark_21102005.pdf