基于时间排序的监督共识算法  

Supervised Consensus Algorithm Based on Time Sorting

作　　者：牟平 梁鉴如[1] MU Ping;LIANG Jian-ru(Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学,上海201620

出　　处：《计算机技术与发展》2021年第8期87-91,共5页Computer Technology and Development

基　　金：国家自然科学基金(61705127)。

摘　　要：区块链作为一种新型的去中心化数据处理协议,其信息可追溯,不可篡改,灾备性能优异,不依赖特定机构背书的特点引起了国内外研究者的广泛关注。受制于网络的物理限制以及软件支持,为了获得较高的性能,传统的区块链算法往往依靠主节点对客户端的消息进行排序、打包和传播,如果主节点被恶意控制则会对系统造成极大危害。针对系统过度依赖主节点的问题,对主流的区块链主节点选举方式以及在系统中的作用进行了深入分析和讨论。从安全性、稳定性、吞吐率等方面详细阐述了不同算法的优点和弊端。在此基础上提出一种利用监督节点进行比较验证主节点是否诚实工作的方法。分析证明,优化后的共识能以较低的代价显著增加主节点作弊的成本,有效提升了系统的安全性。Blockchain,as a new type of decentralized data processing protocol,has attracted extensive attention from researchers at home and abroad for its characteristics of traceability of information,non-tamper-proof,excellent disaster recovery performance and independent endorsement of specific institutions.Constrained by the physical limitations of the network and software support,in order to obtain higher performance,traditional blockchain algorithms often rely on the master node to sort,package and spread the messages of the client.If the master node is maliciously controlled,it will cause extreme damage to the system great harm.Aiming at the problem of the system's excessive dependence on the master node,the mainstream blockchain master node election method and its role in the system are analyzed and discussed in depth.The advantages and disadvantages of different algorithms are explained in detail from the aspects of security,stability,throughput rate,etc.On this basis,a method of comparing and verifying whether the master node is working honestly by using the supervision node is proposed.The analysis proves that the optimized consensus can significantly increase the cost of cheating by the master node at a lower cost,and effectively improve the security of the system.

关 键 词：区块链 监督 时间戳 主节点 排序 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]