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Original Articles

A new generic construction of anonymous designated confirmer signature for privacy-preserving fair exchange

, &
Pages 946-961 | Received 03 Aug 2015, Accepted 23 Dec 2015, Published online: 25 Mar 2016
 

ABSTRACT

Designated confirmer signature (DCS), introduced by Chaum at Eurocrypt 1994, can be used to control the public verifiability of a digital signature. It is a very useful tool in many applications which require a signature to remain anonymous and unverifiable until a certain time/condition is reached. In this paper, we propose a new generic construction of Anonymous Identity-Based DCS from Anonymous Identity-Based Signature. Interestingly, our construction also automatically implies an Anonymous Identity-Based Convertible Undeniable Signature scheme. We prove that the construction is secure for signer, verifier and confirmer in the standard model.

2010 AMS SUBJECT CLASSIFICATIONS:

Acknowledgments

We thank the anonymous reviewers for their invaluable comments and suggestions that have greatly helped us improve our work.

Disclosure statement

No potential conflict of interest was reported by the authors.

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