A new generic construction of anonymous designated confirmer signature for privacy-preserving fair exchange. Issue 5 (4th May 2017)

• Record Type: Journal Article
• Authors: Wei, Jiannan; Yang, Guomin; Mu, Yi
• Is Part Of: International journal of computer mathematics. Volume 94:Issue 5(2017)
• Page Start: 946
• Page End: 961
• Publication Date: 2017-05-04
• Subjects: Identity-based cryptography -- designated confirmer signature -- anonymous signature -- undeniable signature -- fair exchange; 94A60 -- 94A62; Computers -- Periodicals; Numerical analysis -- Periodicals; Automation -- Periodicals; 004.0151
• DOI: 10.1080/00207160.2016.1154951
• Languages: English
• ISSNs: 0020-7160

Abstract

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.