Uncoercible e-Bidding Games

  • Authors:
  • M. Burmester;E. Magkos;V. Chrissikopoulos

  • Affiliations:
  • Florida State University, Department of Computer Science, Tallahassee, FL 32306-4530, USA burmester@cs.fsu.edu;University of Piraeus, Department of Informatics, 80 Karaoli & Dimitriou, Piraeus 18534, Greece emagos@unipi.gr;Ionian University, Department of Archiving and Library Studies, Old Palace Corfu 49100, Greece vchris@ionio.gr

  • Venue:
  • Electronic Commerce Research
  • Year:
  • 2004

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Abstract

The notion of uncoercibility was first introduced in e-voting systems to deal with the coercion of voters. However this notion extends to many other e-systems for which the privacy of users must be protected, even if the users wish to undermine their own privacy. In this paper we consider uncoercible e-bidding games. We discuss necessary requirements for uncoercibility, and present a general uncoercible e-bidding game that distributes the bidding procedure between the bidder and a tamper-resistant token in a verifiable way. We then show how this general game can be used to design provably uncoercible e-auctions and e-elections. Finally, we discuss the practical consequences of uncoercibility in other areas of e-commerce.