详细信息
文献类型:期刊文献
中文题名:无滥用的乐观多方合同签署协议
英文题名:Abuse-free and optimistic multi-party contract signing protocols
作者:李向东[1,2];王清贤[1];陈莉[1,3]
第一作者:李向东
机构:[1]解放军信息工程大学信息工程学院,郑州450002;[2]郑州大学西亚斯国际学院计算机科学系,河南新郑451150;[3]河南财经学院计算中心,郑州450002
第一机构:解放军信息工程大学信息工程学院,郑州450002
年份:2009
期号:5
起止页码:1904-1907
中文期刊名:计算机应用研究
外文期刊名:Application Research of Computers
收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:国家“863”计划资助项目(2007AA01Z471);河南省重点科技攻关项目(072102210029);河南省科技攻关项目(0624260017)
语种:中文
中文关键词:无滥用性;多方合同签署;乐观协议;公平交换
外文关键词:abuse-freeness ; multi-party contract signing; optimistic protocols ; fair exchange
摘要:为了解决多方合同签署协议结构复杂、难以理解和分析、消息交换轮数和次数多、效率低等问题,提出了两个乐观多方合同签署协议,并分析了协议的公平性和无滥用性。协议1使用普通数字签名算法,满足公平性但不满足无滥用性;协议2使用一种专用合同签名算法,同时满足公平性和无滥用性。两个协议都具有简单的对称结构,不论有多少个不诚实用户,主协议只需两轮交换,消息交换次数为O(n2)。
There were difficulties when analyzing and implementing multi-party contract signing protocols because of their complicated structure and inefficient message exchanges. This paper presented two optimistic multi-party contract signing protocols, and analyzed the properties of fairness and abuse-freeness. Protocol 1, based on ordinary digital signatures, was fair but not abuse-free. Protocol 2, based on private contract signatures, was both fair and abuse-free. Both protocols presented in this paper achieve a major improvement: the protocols are symmetric; the number of rounds is reduced to 2 no matter how many dishonest signatories there are.
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