面向工业物联网的区块链高效拜占庭容错共识算法  

Blockchain efficient Byzantine fault tolerance consensus algorithm for IIoT

作　　者：李凤岐 宋晴晴 徐辉 杜学峰 高嘉隆 佟宁[1,2] 王德广 LI Fengqi;SONG Qingqing;XU Hui;DU Xuefeng;GAO Jialong;TONG Ning;WANG Deguang(School of Software,Dalian Jiaotong University,Dalian 116028,China;Key Laboratory of Blockchain Technology and Application in Dalian City,Dalian 116028,China;School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;School of Computer and Communication Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学软件学院,辽宁大连116028 [2]大连市区块链技术与应用重点实验室,辽宁大连116028 [3]大连交通大学机械工程学院,辽宁大连116028 [4]大连交通大学计算机与通信工程学院,辽宁大连116028

出　　处：《通信学报》2024年第5期165-177,共13页Journal on Communications

基　　金：辽宁省国际科技合作计划基金资助项目(No.2022JH2/10700012);辽宁省应用基础研究计划基金资助项目(No.2022JH2/101300269,No.2023JH2/101300188)。

摘　　要：鉴于工业物联网多样性终端存在作恶风险,为满足共识过程中对高效率和安全可容错的需求,提出了基于信誉积分与双层动态的实用拜占庭容错(CD-PBFT)高效共识算法。信誉积分模型确保良好节点参与共识,移除故障节点;双层架构实现交易验证和读写操作的并行;自适应主节点算法随机选取信誉值高节点作为主节点并确保其安全性。实验结果表明,CD-PBFT在保持安全性与活性的基础上,相较于PBFT,网络交易时延平均降低34.8%,吞吐量平均提高25.2%,实现了对效率与安全容错性的双重要求。Considering the malicious risks associated with diverse terminals in the industrial Internet of things(IIoT),a practical Byzantine fault tolerant(PBFT)efficient consensus algorithm based on credit score and dynamic double layer(CD-PBFT)was proposed to meet the requirements of high efficiency and security fault tolerance in the consensus pro‐cess.The participation of good nodes in the consensus and the removal of faulty nodes were ensured by the credit score model.The parallelism of transaction verification and read write operations was achieved through the implementation of a double layer architecture.Nodes with high credit were randomly selected as the master node by the adaptive master node algorithm,ensuring its security.Experimental results show that CD-PBFT not only can maintain the safety and live‐ness of the consensus algorithm but also can reduce network delay by 34.8%and increase throughput by 25.2%com‐pared with PBFT,which meets the double requirements of efficiency and security fault tolerance.

关 键 词：工业物联网 信誉积分模型 双层动态 实用拜占庭容错 共识算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]