Short designated verifier proxy signature from pairings

Authors:
Xinyi Huang;Yi Mu;Willy Susilo;Futai Zhang
Affiliations:
College of Mathematics and Computer Science, Nanjing Normal University, P.R. China;Centre for Information Security Research, School of Information Technology and Computer Science, University of Wollongong, Australia;Centre for Information Security Research, School of Information Technology and Computer Science, University of Wollongong, Australia;College of Mathematics and Computer Science, Nanjing Normal University, P.R. China
Venue:
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
Year:
2005

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Abstract

In a designated verifier proxy signature scheme, the original signer delegates her/his signing capability to the proxy signer in such a way that the latter can sign messages on behalf of the former, but only the designated verifier can believe the validity of these signatures. In this paper, we firstly describe the notion of short designated verifier proxy signature, which we call SDVPS. Then a concrete scheme is presented. We prove that the proposed scheme is unforgeable even to the original signer under the Gap Bilinear Diffie-Hellman assumption and Random Oracle Model.