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Preserving transparency and accountability in optimistic fair exchange of digital signatures
Faculty of Informatics - Papers (Archive)
  • Willy Susilo, University of Wollongong
  • Yi Mu, University of Wollongong
  • Wei Wu, University of Wollongong
  • Robert H Deng, Singapore Management University
  • Xinyi Huang, University of Wollongong
  • J Zhou
RIS ID
42772
Publication Date
1-1-2011
Publication Details

Huang, X., Mu, Y., Susilo, W., Wu, W., Zhou, J. & Deng, R. H. (2011). Preserving transparency and accountability in optimistic fair exchange of digital signatures. IEEE Transactions on Information Forensics and Security, 6 (2), 498-512.

Abstract
Optimistic fair exchange (OFE) protocols are useful tools for two participants to fairly exchange items with the aid of a third party who is only involved if needed. A widely accepted requirement is that the third party's involvement in the exchange must be transparent, to protect privacy and avoid bad publicity. At the same time, a dishonest third party would compromise the fairness of the exchange and the third party thus must be responsible for its behaviors. This is achieved in OFE protocols with another property called accountability. It is unfortunate that the accountability has never been formally studied in OFE since its introduction ten years ago. In this paper, we fill these gaps by giving the first complete definition of accountability in OFE where one of the exchanged items is a digital signature and a generic (also the first) design of OFE where transparency and accountability coexist.
Citation Information
Willy Susilo, Yi Mu, Wei Wu, Robert H Deng, et al.. "Preserving transparency and accountability in optimistic fair exchange of digital signatures" (2011) p. 498 - 512
Available at: http://works.bepress.com/ymu/35/