摘要
区块链技术综合了非对称加密体系、分布式计算范式和共识算法以及智能合约等多种技术,是一种“去中心化”的分布式账本,受到了人们的广泛关注。然而,由于其交易记录可以公开访问,分布式账本面临着严重的隐私泄露问题。文章旨在对区块链隐私威胁和保护机制进行全面研究,介绍区块链技术中身份隐私和交易隐私的概念,对区块链现有隐私保护机制进行分类,分析各自的优缺点。此外,还展望了未来区块链隐私保护研究可能的发展方向。
Blockchain is a kind of‘decentralized’distributed ledger,which integrates asymmetric encryption algorithms,new distributed computing paradigms,consensus algorithms,smart contracts and other technologies.It has aroused extensive attention.However,since transaction records on the blockchain are publicly accessible to users,the ledger sharing mechanism is faced with serious privacy leaks.This paper aims to conduct comprehensive research on the privacy threats and protection mechanisms of blockchains.The concepts of identity privacy and transaction privacy in blockchain technology are introduced,the existing privacy protection mechanisms of the blockchain are classified,and their respective advantages and disadvantages are analyzed.In addition,some suggestions about future directions on blockchain privacy protection research are given.
作者
谭作文
唐春明
TAN Zuo-wen;TANG Chun-ming(School of Information Technology,Jiangxi University of Finance&Economics,Nanchang 330032,China;School of Mathematics and Information Science,Guangzhou University,Guangzhou 510006,China)
出处
《广州大学学报（自然科学版）》
CAS
2021年第4期1-15,共15页
Journal of Guangzhou University:Natural Science Edition
基金
国家自然科学基金资助项目(61862028,61772147)。
关键词
比特币
区块链
共识算法
密码体制
隐私泄露
bitcoin
blockchain
consensus mechanism
cryptographic system
privacy disclosure
