Fair exchange signature schemes

查看全文 作　　者：LIU [1,2]JingWei;SUN [1]Rong;KWAK [2]KyungSup

机构地区：[1]Key Laboratory of Computer Network and Information Security, Ministry of Education, Xidian University, Xi'an 710071, China;[2]UWB Wireless Communications Research Center, Inha University, Incheon 402751, Korea

出　　处：《Science China(Information Sciences)》索引2010年第53卷第5期,共9页

基　　金：supported by the MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center) support program supervised by the NIPA (National IT Industry Promotion Agency) (Grant No. NIPA-2010-C1090-1011-0007);the Korea Foundation for Advanced Studies' International Scholar Exchange Fellowship for the academic year of 2009-2010, Korea;the National High-Tech Research & Development Program of China (Grant No. 2007AA01Z472);the 111 Project (B08038), China 摘　　要：In this paper a new class of fair exchange signature scheme (FESS) is proposed that allows two players to exchange digital signatures in a fair way. The new signature scheme is a general model and has various implementations based on most of the existing signature schemes; thus it may also be considered as an interesting extension of concurrent signature presented in EUROCRYPT 2004 that is constructed from ring signatures. In FESS, two unwakened signatures signed respectively by two participants can be verified easily by each player, but it would not go into effect until an extra piece of commitment keystone is released by one of the players. Once the keystone is revealed, two signatures are both aroused and become valid. A key feature of FESS is that two players can exchange digital signatures simultaneously through a secret commitment keystone without involvement of any trusted third party (TTP). Moreover, the efficiency of the new scheme is higher than that of concurrent signatures. 关键词：签名方案公平交换鼻内镜手术同时签名数字签名可信第三方通用模型环签名

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Fair exchange signature schemes

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