An implementation of, and attacks on, zero-knowledge watermarking

  • Authors:
  • Scott Craver;Bede Liu;Wayne Wolf

  • Affiliations:
  • Department of Electrical Engineering, Princeton University;Department of Electrical Engineering, Princeton University;Department of Electrical Engineering, Princeton University

  • Venue:
  • IH'04 Proceedings of the 6th international conference on Information Hiding
  • Year:
  • 2004

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Abstract

A problem of considerable theoretical interest in digital watermarking is that of asymmetric, or zero-knowledge watermarking. In this problem, we wish to embed a watermark in a piece of multimedia and later prove that we have done so, but without revealing information that can be used by an adversary to remove the signal later. In this paper we develop a watermarking system based on the ambiguity attack method outlined in [14], constructing a vector-based watermarking system applicable to images, audio and video. An example of image watermarking is provided. We also outline some important attacks and thus important design principles for asymmetric watermarking systems.