Asynchronous protocols for optimistic fair exchange

N. Asokan, Victor Shoup, Michael Waidner

Research output: Contribution to journalConference articlepeer-review


The optimistic approach of involving a third party only in the case of exceptions is a useful technique to build secure, yet practical fair exchange protocols. Previous solutions using this approach implicitly assumed that players had reliable communication channels to the third party. In this paper, we present a set of optimistic fair exchange protocols which tolerate temporary failures in the communication channels to the third party. A central feature of the protocols is that either player can asynchronously and unilaterally bring a protocol run to completion.

Original languageEnglish (US)
Pages (from-to)86-99
Number of pages14
JournalProceedings of the IEEE Computer Society Symposium on Research in Security and Privacy
StatePublished - 1998
EventProceedings of the 1998 IEEE Symposium on Security and Privacy - Oakland, CA, USA
Duration: May 3 1998May 6 1998

ASJC Scopus subject areas

  • Software


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