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Methods and systems for encoding and protecting data using digital signature and watermarking techniques

  • US 8,850,214 B2
  • Filed: 05/10/2013
  • Issued: 09/30/2014
  • Est. Priority Date: 06/08/1999
  • Status: Expired due to Fees
First Claim
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1. A method for determining a presence of a watermark in electronic data comprising:

  • generating a plurality of keys;

    retrieving a plurality of payloads from the electronic data using the plurality of keys;

    generating a statistical indicia of randomness of the plurality of payloads; and

    determining the presence of the watermark in the electronic data based on the indicia being less than a threshold,wherein the plurality of keys comprises randomly generated keys.

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