A Fair and Abuse-Free Contract Signing Protocol from Boneh-Boyen Signature
- 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
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.
Keywordsoptimistic fair exchange Boneh-Boyen signature abuse-freeness standard model
Unable to display preview. Download preview PDF.