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 === | === Slides === | ||
| − | + | http://w8n.koeln.ccc.de/media/slides/oc_watermark_21102005.pdf | |
===klaphek projects=== | ===klaphek projects=== | ||
Revision as of 21:34, 21 October 2005
by Tim TimeWaster tim@timit.nl
Slides
http://w8n.koeln.ccc.de/media/slides/oc_watermark_21102005.pdf
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
