A NEW IDENTITY-BASED GROUP SIGNATURE SCHEME

Xiangguo Cheng, Lifeng Guo, Jia Yu, Huiran Ma, and Yuexiu Wu

Keywords

IDbased signature, group signature, short signature, bilinear pairing, GDH group

Abstract

A new identity (ID)-based dynamic group signature scheme, in which group managers and group members are all ID-based, is presented in this paper. Different from traditional construction of group signatures, we use a new and efficient method to realize the anonymity and traceability. The performance evaluation shows that the signature length in our scheme is only about one-third of that in the short group signature scheme (Boneh et al., LNCS 3152, 2004).

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