区块链隐私保护技术研究综述  

A survey on privacy protection techniques in blockchain system

作　　者：谭作文[1] 唐春明[2] 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)

机构地区：[1]江西财经大学信息管理学院,江西南昌330032 [2]广州大学数学与信息科学学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》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)。

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.

关 键 词：比特币 区块链 共识算法 密码体制 隐私泄露 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]