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签名中嵌入用户身份信息的公平合同签署协议
引用本文:司亚利,张爽,李峰.签名中嵌入用户身份信息的公平合同签署协议[J].计算机工程与应用,2009,45(19):95-97.
作者姓名:司亚利  张爽  李峰
作者单位:燕山大学,里仁学院,河北,秦皇岛,066004
基金项目:国家科技部高新技术计划项目,国家电子信息发展基金及河北省信息产业发展计划项目,河北省自然科学基金 
摘    要:通过在Schnorr签名中嵌入用户的身份信息设计了一个公平的合同签署协议。与已有的没有嵌入用户身份信息的合同签署协议相比,该协议具有更好的公平性。另外本协议还引入了n个离线的半可信第三方,分析表明这不仅实现了签名者隐私的保护,还有效地降低了签名者中的一方与离线半可信第三方合谋来获取另一方签名的概率,它的理论基础是公开可验证秘密分享。

关 键 词:Schnorr签名  公开可验证秘密分享  身份信息  半可信第三方
收稿时间:2008-10-14
修稿时间:2008-12-26  

Fair contract signing protocol with signature embeded users' identy information
SI Ya-li,ZHANG Shuang,LI Feng.Fair contract signing protocol with signature embeded users' identy information[J].Computer Engineering and Applications,2009,45(19):95-97.
Authors:SI Ya-li  ZHANG Shuang  LI Feng
Affiliation:SI Ya-li,ZHANG Shuang,LI Feng.1.Department of Liren,Yanshan University,Qinhuangdao,Hebei 066004,China 2.Department of Information Science , Engineering,China
Abstract:The article designs a fair contract signing protocol by embedding users’identy information into Schnorr signature.Compared with existing had not embedding the users’ identy information into the contract signing protocol,this protocol has a better fairness.Moreover the protocol also introduces n off-line semi-trusted third parties,the analysis has indicated that it realizes not only the signers’ privacy protection,but also the reduced probability that one party conspires with off-line semi-trusted third parties to gain another party’s signature.It is based on Publicly Verifiable Secret Sharing(PVSS) theory.
Keywords:Schnorr-signature  Publicly Verifiable Secret Sharing(PVSS)  identy information  semi-trusted third party
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