new optimistic fair exchange protocol based on short signature

	new optimistic fair exchange protocol based on short signature
	Sun Yanbin; Gu Lize; Qing Sihan; Zheng Shihui; Yang Yixian; Sun Yan
	2010
会议名称	2nd International Conference on Communication Software and Networks, ICCSN 2010
会议录名称	2nd International Conference on Communication Software and Networks, ICCSN 2010
页码	99-104
会议日期	40576
会议地点	Singapore, Singapore
收录类别	EI
出版地	United States
ISBN	9780770000000
部门归属	(1) Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China; (2) Key Laboratory of Network and Information Attack and Defence Technology of MOE, Beijing University of Posts and Telecommunications, Beijing, 100876, China; (3) Institute of Software, Chinese Academy of Sciences, Beijing, 100080, China; (4) Operations Research Center, Shijiazhuang Army Command Academy, Shijiazhuang, 050084, China
摘要	In CIS2008, Gao et al. suggested an abuse-free optimistic fair exchange protocol based on the short signature. Their scheme is very efficient in terms of communication. In this paper, we point out that their scheme has two weaknesses. These weaknesses may lead to an unfair situation that Bob may obtain Alices signature, but Alice can not obtain Bobs signature. In order to overcome these weaknesses, we propose a new secure abuse-free optimistic fair exchange protocol. In the new protocol, both parties can contact the trusted third party and settle the argument before the deadline. Moreover, we give a formal proof of fairness in the strand space model. © 2010 IEEE.
关键词	Computer Software Network Security
主办者	Int. Assoc. Comput. Sci. Inf. Technol. (IACSIT)
内容类型	会议论文
URI标识	http://ir.iscas.ac.cn/handle/311060/8838
专题	基础软件国家工程研究中心
推荐引用方式 GB/T 7714	Sun Yanbin,Gu Lize,Qing Sihan,et al. new optimistic fair exchange protocol based on short signature[C]. United States,2010:99-104.

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