Security analysis of some threshold signature schemes and multi-signature schemes

Authors:
Tianjie Cao;Dongdai Lin
Affiliations:
School of Computer Science and Technology, China University of Mining and Technology, Xuzhou, China;Institute of Software of Chinese Academy of Sciences, Beijing, China
Venue:
CISC'05 Proceedings of the First SKLOIS conference on Information Security and Cryptology
Year:
2005

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Abstract

Digital signature scheme allows a user to sign a message in such a way that anyone can verify the signature, but no one can forge the signature on any other message. In this paper, we show that Xie and Yu’s threshold signature scheme, Huang and Chang’s threshold proxy signature scheme, Qian, Cao and Xue’s pairing-based threshold proxy signature scheme, Xue and Cao’s multi-proxy signature scheme and Zhou et al.’s proxy multi-signature scheme are all insecure against the forgery attacks.