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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.
CitationHeidarvand, S.; Villar, J. A fair and abuse-free contract signing protocol from Boneh-Boyen signature. A: Public Key Infrastructures, Services and Applications. "Public Key Infrastructures, Services and Applications : 7th European Workshop, EuroPKI 2010 Athens, Greece, September 23-24, 2010 Revised Selected Papers". Atenes: Springer Verlag, 2010, p. 125-140.
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