Zero-Knowledge Watermark Detection and Proof of Ownership

  • André Adelsbach
  • Ahmad-Reza Sadeghi
Conference paper

DOI: 10.1007/3-540-45496-9_20

Part of the Lecture Notes in Computer Science book series (LNCS, volume 2137)
Cite this paper as:
Adelsbach A., Sadeghi AR. (2001) Zero-Knowledge Watermark Detection and Proof of Ownership. In: Moskowitz I.S. (eds) Information Hiding. IH 2001. Lecture Notes in Computer Science, vol 2137. Springer, Berlin, Heidelberg

Abstract

The goal of zero-knowledge watermark detection is to allow a prover to soundly convince a verifier of the presence of a watermark in certain stego-data without revealing any information which the verifier can use to remove the watermark. Existing proposals do not achieve this goal in terms of definition (not formally zero-knowledge), security (unproven) and coverage (handle only blind watermark detection). In this paper we define zero-knowledge watermark detection precisely.

We then propose efficient and provably secure zero-knowledge protocols for blind and non-blind versions of a well-known class of watermarking schemes. Using these protocols the security and efficiency of many watermark based applications can be significantly improved.

As an example of use we propose concrete protocols for direct proof of ownership which enable offline ownership proofs, i.e., copyright holders can prove their rightful ownership to anyone without involving a trusted third party in the actual proof protocol.

Keywords

Zero-Knowledge Watermark Detection Ownership Proofs 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • André Adelsbach
    • 1
  • Ahmad-Reza Sadeghi
    • 1
  1. 1.FR 6.2 InformatikUniversität des SaarlandesSaarbrückenGermany

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