A privacy-preserving buyer-seller watermarking protocol with semi-trust third party

  • Authors:
  • Min-Hua Shao

  • Affiliations:
  • Department of Management Information Systems, National Pingtung University of Science & Technology, Pingtung, Taiwan

  • Venue:
  • TrustBus'07 Proceedings of the 4th international conference on Trust, Privacy and Security in Digital Business
  • Year:
  • 2007

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Abstract

Digital watermarking is a value-added technique used in digital rights management systems for the purposes of copy protection and copy deterrence for digital contents, and it has inspired a large variety of work. Unfortunately, much of that work focus mainly on right-holder's security needs rather than those of consumers. This paper proposes a new buyer-seller watermarking protocol for the betterment of consumers' security needs. The key features of our scheme are including of loss-preventing security property ensured, semitrust third party involved, efficient protection from conspiracy attacks, and lightweight involvement for buyers.