An Efficient Protocol for Certified Electronic Mail

  • Josep Lluís Ferrer-Gomila
  • Magdalena Payeras-Capellà
  • Llorenç Huguet i Rotger
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1975)


Certified electronic mail is a kind of fair exchange of values: a message for a receipt. An exchange is fair if at the end of the exchange, either each party receives the item it expects or neither party receives any useful information about the other’s item. Fairness can be achieved through the involvement of a trusted third party (TTP). It is very interesting (and practical) the optimistic approach of involving a third party only in the case of exceptions: one party cannot obtain the expected item from the other party. Previous solutions using this approach implicitly assumed that players had reliable communication channels to the third party [2]. In this paper, we present an efficient (only three steps, the minimum), optimistic and fair protocol for certified electronic mail.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Josep Lluís Ferrer-Gomila
    • 1
  • Magdalena Payeras-Capellà
    • 1
  • Llorenç Huguet i Rotger
    • 1
  1. 1.Departament de Ciències Matemàtiques i InformàticaUniversitat de les Illes BalearsPalma de MallorcaSpain

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