网络与信息安全学报 ›› 2022, Vol. 8 ›› Issue (5): 150-157.doi: 10.11959/j.issn.2096-109x.2022068

• 学术论文 • 上一篇    下一篇

数字货币交易匿名性与监管的博弈分析

张娴, 朱建明, 隋智源, 明盛智   

  1. 中央财经大学信息学院，北京 100081
  • 修回日期:2022-04-29 出版日期:2022-10-15 发布日期:2022-10-01
  • 作者简介:张娴（1998- ），女，河南开封人，中央财经大学硕士生，主要研究方向为区块链安全、隐私保护、数字货币
    朱建明（1965- ），男，山西太原人，中央财经大学教授、博士生导师，主要研究方向为信息安全、区块链技术、隐私保护
    隋智源（1984- ），男，山东诸城人，中央财经大学讲师，主要研究方向为应用密码学、信息安全、隐私保护
    明盛智（1999- ），男，广西桂林人，中央财经大学硕士生，主要研究方向为区块链技术、隐私保护、隐私计算
  • 基金资助:
    中央财经大学新兴交叉学科建设项目

Analysis on anonymity and regulation of digital currency transactions based on game theory

Xian ZHANG, Jianming ZHU, Zhiyuan SUI, Shengzhi MING   

  1. School of Information, Central University of Finance and Economics, Beijing 100081, China
  • Revised:2022-04-29 Online:2022-10-15 Published:2022-10-01
  • Supported by:
    Emerging Interdisciplinary Project of CUFE

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摘要：

通过利用区块链等技术，数字货币作为一种新型货币资产推动了数字经济的发展。数字货币交易平台在数字货币用户对私有数字货币使用中占有重要角色。现有的数字货币交易平台可能存在泄露用户个人隐私的风险，为不法分子提供参与“空投”事件、勒索、骗局等各种异常交易行为的条件；数字货币交易平台对用户强匿名性保护也会增加监管部门对于数字货币交易情况的监管难度。因此数字货币交易平台选择对用户的匿名性保护的强弱不仅需要考虑用户的个人隐私安全，而且要考虑如何符合监管部门对其监管工作的要求。基于对数字货币交易平台和监管部门之间关系的分析，建立演化博弈模型，对数字货币交易平台与监管博弈模型进行定义和构建，根据数字货币交易平台与监管部门收益矩阵求解复制动态方程并得出均衡解。通过构建雅可比矩阵对演化系统在不同参数取值下的均衡点进行稳定性分析，并分析在不同情况下，数字货币交易平台与监管部门的演化稳定选择及策略。结合Matlab实验环境，对数字货币交易平台的强弱匿名性保护策略和监管部门的强弱监管策略进行仿真实验，验证博弈模型的准确性。结合实验结果，提出对数字货币交易平台的监管建议，为我国将来开展数字货币交易平台的监管工作提供理论依据。

关键词: 演化博弈, 数字货币交易平台, 隐私保护, 匿名性, 监管

Abstract:

By using technologies such as blockchain, digital currency, as a new type of monetary asset, has been promoting the development of digital economy.Digital currency trading platform plays an important role in the use of private digital currency by digital currency users.Existing digital currency trading platforms may expose users’ privacy and provide illegal elements with the conditions to participate in various abnormal trading behaviors such as“air dropping” events, extortion, fraud, etc.The strong anonymity protection of users by digital currency trading platforms also make it more difficult for regulatory authorities to supervise digital currency transactions.Therefore, the strength of the anonymity protection of users by digital currency trading platforms need to consider not only the privacy protection of users, but also meet the regulatory requirements.For this reason, based on the analysis of the relationship between the digital currency trading platforms and the supervisory departments, an evolutionary game model was established, the digital currency trading platform and the supervisory game model were defined and constructed, and the replication dynamic equation was solved and the balanced solution was obtained according to the income matrix between the digital currency trading platform and the supervisory department.By building a Jacobian matrix, the stability of the evolutionary system under different parameters was analyzed.Besides, the evolutionary stable selection and strategy of the digital currency trading platform and the regulatory authority under different conditions were also analyzed.With Matlab, different strategies of anonymity protection of the digital currency trading platform and different strategies of supervision strategy of the regulatory department were simulated to verify the accuracy of the game model.Based on the results of the simulations, some suggestions on the supervision of digital currency trading platforms are put forward, which provides a theoretical basis for the future supervision of digital currency trading platforms in China.

Key words: evolutionary game, digital currency trading platform, privacy protection, anonymity, regulatory

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