基于区块链的公平交换方案  

Blockchain-based Fair Exchange Scheme

作　　者：周由胜[1,2] 钟天琦 ZHOU Yousheng;ZHONG Tianqi(College of Computer Science and Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;College of Cyber Security and Information Law,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学计算机科学与技术学院,重庆400065 [2]重庆邮电大学网络空间安全与信息法学院,重庆400065

出　　处：《信息网络安全》2021年第5期19-30,共12页Netinfo Security

基　　金：国家自然科学基金[61702067];重庆市自然科学基金[cstc2020joymsxmX0343];重庆市留学人员回国创业创新支持计划[CX2018122]。

摘　　要：随着电子商务、电子政务等在线服务的普及,衍生出大量的合同签署业务。由于在互联网环境中,业务双方往往没有物理联系,双方互不信任,这给合同签署的公平交换带来巨大挑战。并且在开放的互联网环境中,合同签署不仅要满足认证功能,在一些应用中需要同时保证数据传输的机密性。文章提出的基于签密实现的公平交换方案,采用区块链技术代替传统方案中的可信第三方来实现方案的公平性,同时可以保证数据的机密性和认证功能。With the popularization of online services such as E-commerce and E-government,a large number of contract signing businesses have been derived.In the Internet environment,business parties often have no physical contact,and the two parties do not trust each other,which brings huge challenges to the fair exchange of contract signing.And in an open Internet environment,contract signing must not only satisfy the authentication function,but also ensure the confidentiality of data transmission in some applications.The fair exchange scheme based on blockchain in this paper to replace the trusted third party in traditional schemes to achieve the fairness of the scheme,while ensuring data confidentiality and authenticity.

关 键 词：区块链 公平交换 签密 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]