OpenChaos/Hacking Digital Watermarks
< OpenChaos
Revision as of 19:25, 21 October 2005 by 2001:6f8:12f3:1:211:25ff:fe46:9611 (talk)
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
Examples:
- use LSBs (low significant bits)
- add high freq (pseudo ) nouse / spread
- echo watermark
- MPEG stream watermarking
