文献类型：期刊文献

中文题名：一种基于权益代表的可扩展共识协议

英文题名：A Scalable Consensus Protocol Based on Equity Representation

作者：李忠诚[1];黄建华[1];唐瑞琮[2];胡庆春[1];夏旭[1]

机构：[1]华东理工大学信息科学与工程学院,上海200237;[2]香港DAEX区块链有限公司,上海200120

年份：2020

卷号：38

期号：1

起止页码：51

中文期刊名：应用科学学报

外文期刊名：Journal of Applied Sciences

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：国家自然科学基金（No.61472139）;国家“863”高技术研究发展计划基金（No.SS2015AA020107）资助

语种：中文

中文关键词：区块链;性能;共识协议

外文关键词：blockchain;performance;consensus protocol

摘要：区块链系统在去中心化、安全性和可扩展性达到动态平衡的难点在于高效共识机制的设计.为解决现有区块链系统中共识机制面临的安全与性能的瓶颈问题,提出了一种基于权益代表的可扩展共识协议(delegate-based scalable consensus protocol, DSCP).首先,DSCP采用分区并行共识方式来构建高性能和可拓展的区块链,并通过代理机制生成全网认可的共识区块;其次,为了提高网络分区速度和分区内的共识性能,提出了基于可验证随机函数(verifiable random function, VRF)算法的网络节点快速分区机制,设计了基于投票的分区共识算法(voting-based consensus protocol, VCP);最后,提出了新的激励和押金机制,以增强DSCP协议的安全性.实验分析表明:与现有的区块链共识协议相比,DSCP有着良好的性能优势.
The difficulty in achieving dynamic balance of decentralization, security and scalability of blockchain systems lies in the design of efficient consensus mechanisms. In order to solve the bottleneck problem of security and performance faced by the consensus mechanisms in the existing blockchain systems, this paper proposes a delegate-based scalable consensus protocol(DSCP) based on equity representatives. First, DSCP uses the partition parallel consensus method to build a high-performance and scalable blockchain and generate a consensus block that is recognized by the entire network through a proxy mechanism. Then, in order to improve the network partition speed and the consensus performance during the partition, this paper proposes a fast partitioning mechanism based on VRF algorithm, and designs a voting-based partitioning high-performance consensus algorithm voting-based consensus protocol(VCP). At last, this paper also proposes a new incentive and deposit mechanism to enhance the security of the DSCP protocol. Experimental analysis shows that DSCP has a good performance advantage compared with the existing blockchain consensus protocols.