基于多链的物联数据分层访问控制方法  

Hierarchical access control method for internet of things data based on multi-chain

作　　者：顾娇娇 戴欢 王陆平 陈洁 GU Jiao-jiao;DAI Huan;WANG Lu-ping;CHEN Jie(School of Electronics and Information Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;School of Software Engineering,East China Normal University,Shanghai 200241,China)

机构地区：[1]苏州科技大学电子与信息工程学院,江苏苏州215009 [2]华东师范大学软件工程学院,上海200241

出　　处：《计算机工程与设计》2024年第11期3240-3247,共8页Computer Engineering and Design

基　　金：国家自然科学基金项目(61702354、61876121、61972156)。

摘　　要：智慧城市利用大量物联网设备采集、处理、分析数据,以改善公共基础设施和服务,然而不同部门、层级如何实现海量物联数据安全共享成为城市大脑建设亟待解决的问题,为此提出一种基于多链的分层访问控制方法。根据数据类型及安全等级构建多链架构分别存储不同部门的业务数据,实现用户数据的分类分层存储;在基于属性的访问控制中引入用户信誉度分析,通过智能合约动态控制用户访问层级,实现细粒度访问控制;在多链环境中利用Rollup对主区块链进行扩容,减小区块链存储压力。实验结果表明,该方法能够有效提高物联数据存储共享的安全等级和访问效率。Smart cities use a large number of IoT devices to collect,process,and analyse data to improve public infrastructure and services,however,how to achieve the safe sharing of massive IoT data in different departments and levels has become an urgent problem in the construction of city brain,for this reason,a multi-chain based hierarchical access control method was proposed.A multi-chain architecture was built to store business data of different departments according to data types and security levels,to achieve the classification and hierarchical storage of user data.The user credibility analysis was introduced in attribute-based access control,dynamically controlling the user access tier through smart contracts,to achieve fine-grained access control.The main blockchain was expanded using Rollup in the multi-chain environment,to reduce blockchain storage pressure.Experimental results show that this method can effectively improve the security level and access efficiency of IoT data storage and sharing.

关 键 词：区块链 访问控制 数据共享 物联网 智慧城市 多链 信誉度 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]