Digital watermarks are embedded and decoded from host media signals like images and audio using encryption keys. The encryption keys are used to encrypt different components of the digital watermark message. The encryption keys can be used to scramble the digital watermark and components of it in alternative...http://www.google.fr/patents/US7062069?utm_source=gb-gplus-shareBrevet US7062069 - Digital watermark embedding and decoding using encryption keys
Digital watermark embedding and decoding using encryption keys
