A Fair and Abuse-Free Contract Signing Protocol from Boneh-Boyen Signature

  • Somayeh Heidarvand
  • Jorge L. Villar
Conference paper

DOI: 10.1007/978-3-642-22633-5_9

Volume 6711 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Heidarvand S., Villar J.L. (2011) A Fair and Abuse-Free Contract Signing Protocol from Boneh-Boyen Signature. In: Camenisch J., Lambrinoudakis C. (eds) Public Key Infrastructures, Services and Applications. EuroPKI 2010. Lecture Notes in Computer Science, vol 6711. Springer, Berlin, Heidelberg

Abstract

A fair contract signing protocol is used to enable two mistrusted parties to exchange two signatures on a given contract, in such a way that either both of them get the other party’s signature, or none of them gets anything. A new signature scheme is presented, which is a variant of Boneh and Boyen’s scheme, and building on it, we propose a new signature fair exchange protocol for which all the properties of being optimistic, setup-free and abuse-free can be proved without random oracles, and it is more efficient than the known schemes with comparable properties.

Keywords

optimistic fair exchange Boneh-Boyen signature abuse-freeness standard model 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Somayeh Heidarvand
    • 1
  • Jorge L. Villar
    • 1
  1. 1.Universitat Politècnica de CatalunyaSpain