Optimistic fair exchange of digital signatures

N. Asokan, Victor Shoup, Michael Waidner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a new protocol that allows two players to exchange digital signatures over the Internet in a fair way, so that either each player gets the other's signature, or neither player does. The obvious application is where the signatures represent items of value, for example, an electronic check or airline ticket. The protocol can also be adapted to exchange encrypted data. The protocol relies on a trusted third party, but is “optimistic,” in that the third party is only needed in cases where one player attempts to cheat or simply crashes. A key feature of our protocol is that a player can always force a timely and fair termination, without the cooperation of the other player.

Original languageEnglish (US)
Title of host publicationAdvances in Cryptology — EUROCRYPT 1998, International Conference on the Theory and Application of Cryptographic Techniques, Proceedings
EditorsKaisa Nyberg
PublisherSpringer Verlag
Pages591-606
Number of pages16
ISBN (Print)3540645187, 9783540645184
DOIs
StatePublished - 1998
EventInternational Conference on the Theory and Application of Cryptographic Techniques, EUROCRYPT 1998 - Espoo, Finland
Duration: May 31 1998Jun 4 1998

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1403
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

OtherInternational Conference on the Theory and Application of Cryptographic Techniques, EUROCRYPT 1998
CountryFinland
CityEspoo
Period5/31/986/4/98

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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