区块链共识算法综述

Overview of Blockchain Consensus Algorithms

区块链技术作为核心技术自主创新的重要突破口,在越来越多的领域带来了深刻的变革。区块链的三大核心技术分别是:密码学、共识机制和分布式网络。共识算法作为区块链技术的核心之一,对维护系统稳定运行,以及节点间的相互信任有着重要的作用。本文主要介绍了区块链共识机制发展至今的一些代表性算法,包括分布式共识、工作量证明、权益证明等共识算法,并对这些算法中存在的一些安全隐患进行了概述。

Blockchain technology as an important breakthrough for independent innovation of core technology,has been emphasized by many countries and industries.The three core technologies of blockchain are:cryptography,consensus mechanism and distributed network.As one of the core blockchain technologies,consensus algorithm plays an important role in maintaining the stable operation of the system and mutual trust between nodes.This article briefs some representative algorithms of the consensus mechanism so far,and introduces the consensus algorithms of distributed consensus,proof of work,and proof of rights,also security risks in these algorithms are summarized.Finally,some methods to improve the scalability of blockchain technology are outlined.