摘要
区块链技术因其分布式、去中心化、不可篡改等特点在多个领域得到广泛应用。然而,这些特点同时带来了大量的数据冗余与计算冗余,不能很好地适应区块链在数据规模较大的实际业务场景下的应用。针对链上数据容量较小的问题,设计了一种基于区块链的数据链上链下混合存储架构,利用云存储实现大规模数据外包存储功能;采用对称加密技术、可搜索加密技术与属性加密技术,实现链上链下数据的加密存储与搜索、访问控制与数据验证等功能。分析了该方案的安全性,并通过实验证明了可行性。
Blockchain technology has been widely used in many fields due to its distribution,decentralization,and immutability.However,these characteristics also bring a large amount of data redundancy and calculation redundancy,which cannot be well adapted to the application of blockchain in actual business scenarios with large data scales.Aiming at the problem of small data capacity on the chain,this paper designs a blockchain-based hybrid storage architecture with data separately storing on chain and off chain,which uses cloud storage to achieve large-scale data outsourcing storage functions.In addition,symmetric encryption technology,searchable encryption technology and attribute-based encryption technology are used to realize encrypted storage and search of data on and off the chain,with functions of access control and data verification.This paper also analyzes the safety of the scheme and proves the feasibility of the scheme through experiments.
作者
许宗莲
王崇宇
朱晓明
朱宇坤
陈瑞东
XU Zonglian;WANG Chongyu;ZHU Xiaoming;ZHU Yukun;CHEN Ruidong(University of Electronic Science and Technology of China,Chengdu 611731,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《无线电通信技术》
2021年第3期271-276,共6页
Radio Communications Technology
基金
国家自然科学基金项目(U19A2066)
四川省科技计划项目-重点研发项目(20ZDYF0268)
成都市科技项目-重点研发支撑计划-重大科技应用示范项目(2019-YF09-00048-CG)
中国电子科技集团公司第五十四研究所发展基金项目(SXX19104X038,SXX20104X034)。
关键词
区块链
云存储
可搜索加密
属性加密
blockchain
cloud storage
searchable encryption
attribution-base encryption
