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区块截留攻击之演化博弈模型研究 被引量:1

Study on the block withholding attack based on the evolutionary game
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摘要 由于区块截留攻击现象的出现,对比特币网络安全性造成一定威胁,严重地损害了诚实矿工公平获益的权利。针对这种攻击行为,构建了区块截留攻击的演化博弈模型。考虑了矿工在有限理性条件下,其策略的动态演化趋势。利用复制动态推导出演化稳定策略,分析矿工在矿池不同的监管与惩罚措施下的策略选择,并对矿池的监管措施提出相应的建议与对策。实验结果表明,矿池采取相对较低频率的监管和高罚款额的管理模式,能够有效地缓解区块截留攻击的发生。 The emergence of block withholding attack poses a threat to the security of the Bitcoin system and seriously damages the honest miners′right to obtain fair benefits.In this paper,we study this attack by building an evolutionary game model to reveal the dynamic evolution trend of players’strategies and to deduce the evolutionary stability strategies with the help of replicator dynamics.We also analyze the strategy choices of miners under the different supervision and punishment measures of the pool and put forward corresponding suggestions for the pool.Finally,we conduct numerical simulation by Matlab to verify the effectiveness of our analysis by the evolutionary game model.The simulation results show that the mining pool can effectively mitigate the block withholding attack at a relatively low frequency of supervision and high penalty.
作者 程郁琨 许智琪 CHENG Yukun;XU Zhiqi(School of Business,Suzhou University of Science and Technology,Suzhou 215009,China)
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2020年第5期77-85,102,共10页 Journal of Xidian University
基金 国家自然科学基金(11871366) 江苏高校“青蓝工程”中青年学术带头人培养计划 江苏高校“青蓝工程”优秀青年教师培养计划。
关键词 区块截留攻击 演化博弈 比特币 稳定策略 block withholding attack evolutionary game bitcoin stable strategy
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