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Digital watermark embedding and decoding using encryption keys

  • US 7,062,069 B2
  • Filed: 04/06/2004
  • Issued: 06/13/2006
  • Est. Priority Date: 05/08/1995
  • Status: Expired due to Fees
First Claim
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1. A method of embedding a digital watermark in a host media signal, the method comprising:

  • receiving a message comprising variable symbols for embedding in the host media signal, the message having two or more message components;

    encrypting message components with different encryption keys to form an encrypted signal; and

    modifying the host media signal based on the encrypted signal to steganographically hide the encrypted signal in the host media signal.

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