×

Collusion-resistant watermarking and fingerprinting

  • US 7,558,959 B2
  • Filed: 10/28/2004
  • Issued: 07/07/2009
  • Est. Priority Date: 04/23/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method facilitating protection of digital goods, wherein the method is implemented by one or more computers executing computer-executable instructions stored in one or more computer-readable media, the method comprising:

  • segmenting a digital good into multiple segments;

    for each of a plurality of individual segments of the multiple segments, performing acts comprising;

    obtaining a pseudorandom watermarking key;

    combining the watermarking key with the digital good to embed a watermark in the digital good and associate the watermark with a particular individual segment;

    producing a pseudorandom watermark carrier that is independent of the segment-associated watermark and the watermarking key;

    generating an individualized detection key from the watermark carrier and the watermarking key, whereby the individualized detection key is associated with the segment-associated watermark for the particular individual segment, the individualized detection key being used for detecting the segment-associated watermark in the digital good;

    associating the individualized detection key with a unique detection entity by associating the watermark carrier to the unique detection entity, wherein the unique detection entity uses the individualized detection key for detecting the segment-associated watermark in the digital good; and

    identifying, by one or more of the computers, the watermark carrier used to generate the individualized detection key following an attempt to modify or remove the segment-associated watermark from the digital good.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×