Delegatability of an Identity Based Strong Designated Verifier Signature Scheme

Authors:
Xun Sun;Jianhua Li;Hu Yin;Gongliang Chen
Affiliations:
Sybase China, Shanghai 201203, China and Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China and School of Information Security Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, e ...;Sybase China, Shanghai 201203, China;School of Information Security Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, e-mail: xun.sun.cn@gmail.com
Venue:
Informatica
Year:
2010

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Abstract

In 2007, Kancharla et al. proposed an identity-based strong designated verifier signature (IBSDVS) scheme based on bilinear pairings, and claimed it unforgeable and non-delegatable. However, in this paper, we show that this scheme is actually delegatable.