基于随机数的区块链共识机制  

Block Chain Consensus Mechanism Based on Random Numbers

作　　者：赵剑 强文倩[1,2] 安天博 匡哲君 徐大伟 史丽娟 ZHAO Jian;QIANC Wenqian;AN Tianbo;KUANG Zhejun;XU Dawei;SHI Lijuan(School of Network Security,Changchun University,Changchun 130022,China;School of Computer Science and Technology,Changchun University,Changchun 130022,China;School of Electronic Information Engineering,Changchun University,Changchun 130022,China)

机构地区：[1]长春大学网络安全学院,长春130022 [2]长春大学计算机科学技术学院,长春130022 [3]长春大学电子信息工程学院,长春130022

出　　处：《吉林大学学报（信息科学版）》2023年第2期292-298,共7页Journal of Jilin University（Information Science Edition）

基　　金：国家自然科学基金资助项目(61502052);吉林省科技计划基金资助项目(20200301054RQ,20200601004JC,20180101047JC)。

摘　　要：传统共识机制中所有背书节点参与背书,时间消耗量大,并且存在伪造及操控共识过程的可能性问题,安全性较低。为此,基于可验证随机函数在背书节点候选集中随机抽取背书节点进行背书操作,其他背书节点等候其他交易执行时被随机选举,这种随机方式使背书的过程可以并行化,能有效提升处理效率,减少共识机制的处理时间。基于数学性能分析以及构建Hyperledger fabric模型进行实验验证,结果表明优化后的共识机制交易处理速度更快,延迟时间更低,安全性更高。The improvement of consensus mechanism is a key research content in the development process of blockchain technology. In the traditional consensus mechanism, all endorsement nodes participate in endorsement, which consumes a lot of time, and has the possibility of forging and manipulating the consensus process with low security. Based on the verifiable random function, the endorsement nodes in the candidate set of endorsement nodes for trading and any endorsement node for endorsement operation are randomly selected which can effectively improve the processing efficiency and reduce the processing time of the consensus mechanism. Based on theoretical analysis and experimental verification of Hyperledger fabric model, the results show that the optimized consensus mechanism has faster transaction processing speed, lower delay time and higher security.

关 键 词：区块链 可验证随机函数 共识机制 随机性 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]