Difference between revisions of "OpenChaos/Hacking Digital Watermarks"

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by Tim TimeWaster tim@timit.nl
by Tim TimeWaster tim@timit.nl
=== Slides ===
===klaphek projects===
===klaphek projects===

Revision as of 21:33, 21 October 2005

by Tim TimeWaster tim@timit.nl



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


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