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基于积分选择PBFT共识算法的果品质量溯源

Consensus Algorithm Based on Integral Selection PBFT for Fruit Quality Traceability
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摘要 针对基于区块链的果品质量溯源系统中存在的共识算法吞吐量低、时延高、主节点随机选择等问题,本文提出了一种基于积分选择的改进PBFT(practical Byzantine fault tolerance)共识算法.该算法引入积分选择协议,通过对一致性协议、视图转换协议以及垃圾回收机制的优化,提高诚实主节点被选择的概率、减少节点间通讯开销,从而提升共识算法执行效率.同时,在运行垃圾回收机制时,给所有参与节点重新分配积分,达到了动态更改节点数量的目的.实验表明,本文提出的方法在提升共识算法吞吐量和降低时延方面具有更好的性能. To address the low throughput,high latency and random selection of master nodes in the Blockchain-based fruit quality traceability system,this study proposes an improved practical Byzantine fault tolerance(PBFT)consensus algorithm based on integral selection.The algorithm introduces the integral selection protocol and optimizes the consistency protocol,view change protocol and garbage collection mechanism to improve the probability of honest master nodes being selected and reduce the communication overhead between nodes,thus improving the efficiency of consensus algorithm execution.At the same time,when the garbage collection mechanism is operated,the integrals are reallocated to all participating nodes for the dynamic change in the node number.Experiments show that the method proposed in this study has better performance in improving the throughput and reducing the latency of consensus algorithms.
作者 安洋 李坤 李军怀 王怀军 AN Yang;LI Kun;LI Jun-Huai;WANG Huai-Jun(School of Computer Science and Engineering,Xi’an University of Technology,Xi’an 710048,China)
出处 《计算机系统应用》 2022年第2期350-357,共8页 Computer Systems & Applications
基金 陕西省科技计划(2018HJCG-05)。
关键词 溯源 区块链 共识算法 PBFT 积分选择 traceability Blockchain consensus algorithm PBFT integral selection
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