基于区块链的公平交换方案

doi:10.3969/j.issn.1671-1122.2021.05.003

信息网络安全 ›› 2021, Vol. 21 ›› Issue (5): 19-30.doi: 10.3969/j.issn.1671-1122.2021.05.003

基于区块链的公平交换方案

周由胜¹^,²(), 钟天琦¹

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

收稿日期:2021-01-20 出版日期:2021-05-10 发布日期:2021-06-22
通讯作者: 周由胜 E-mail:zhouys@cqupt.edu.cn
作者简介:周由胜（1979—）,男,湖北,副教授,博士,主要研究方向为公钥密码、区块链、移动互联网安全、云安全和物联网安全|钟天琦（1994—）,男,重庆,硕士研究生,主要研究方向为公平交换协议、区块链技术
基金资助:
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)

Blockchain-based Fair Exchange Scheme

ZHOU Yousheng¹^,²(), ZHONG Tianqi¹

1. College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2. College of Cyber Security and Information Law, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2021-01-20 Online:2021-05-10 Published:2021-06-22
Contact: ZHOU Yousheng E-mail:zhouys@cqupt.edu.cn

摘要/Abstract

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。

关键词: 区块链, 公平交换, 签密

Abstract:

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.

Key words: blockchain, fair exchange, signcryption

中图分类号:

TP309

周由胜, 钟天琦. 基于区块链的公平交换方案[J]. 信息网络安全, 2021, 21(5): 19-30.

ZHOU Yousheng, ZHONG Tianqi. Blockchain-based Fair Exchange Scheme[J]. Netinfo Security, 2021, 21(5): 19-30.

图/表 8

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参考文献 27

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阶段方案	系统生成阶段	签密（名）生成阶段	初步验证阶段	签名验证阶段
文献[14] 方案	2T_p	6T_p+T_e+T_o	3T_p+2T_e	5T_p+3T_e
文献[20] 方案	2T_p	3T_p+T_e+T_o	T_p+T_e+T_o	3T_p+4T_e
文献[21] 方案	4 T_p	2T_p	3T_p+2T_e	4T_p+2T_e
本文方案	2T_p	4T_p+2T_e+T_o	T_p+3T_e+2T_o+T_t	2T_e+2T_o+T_t

基于区块链的公平交换方案

Blockchain-based Fair Exchange Scheme

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