基于区块链的数据访问控制方法研究  

Research on Data Access Control Method Based on Block Chain

作　　者：王彦[1,2] WANG Yan(Institute of Scientific and Technological Information of Fujian,Fuzhou Fujian 350003,China;Fujian Provincial Key Laboratory of Information Network,Fuzhou Fujian 350003,China)

机构地区：[1]福建省科学技术信息研究所,福建福州350003 [2]福建省信息网络重点实验室,福建福州350003

出　　处：《信息与电脑》2022年第23期19-21,共3页Information & Computer

基　　金：2021年福建省创新资金项目“3D结构光人脸识别技术研发及应用”(项目编号:2021C0031)。

摘　　要：传统数据访问控制方法的控制范围有限,且在并发访问用户数量较多的情况下,访问控制的误判率较高,降低了数据资源的安全性。基于此,引入区块链技术,提出一种全新的控制方法。首先,利用信任评估算法计算用户的信任值,对数据访问用户进行信任评估;其次,在用户行为信任符合数据访问控制的安全需求后,利用区块链技术构建数据访问控制模型,针对不同用户的数据访问需求与目的,基于静态访问控制与动态访问控制功能,判定数据访问用户与请求者的访问行为是否存在恶意;最后,进行实验对比分析。实验结果表明,在用户并发访问数量逐渐增加的情况下,数据访问控制的误判率均较低,保证了数据资源的安全,优势显著。The control scope of traditional data access control methods is limited,and in the case of a large number of concurrent users,the false positive rate of access control is high,which reduces the security of data resources.Based on this,a new control method is proposed by introducing blockchain technology.Firstly,the trust evaluation algorithm is used to calculate the user’s trust value and evaluate the trust of data access users.Secondly,after the user behavior trust conforms to the security requirements of data access control,the data access control model is built by using blockchain technology.According to the data access needs and purposes of different users,based on the static access control and dynamic access control functions,determine whether the data access users and requesters have malicious access behaviors.Finally,the experiment is compared and analyzed.The experimental results show that when the number of concurrent accesses of users increases gradually,the misjudgment rate of data access control is low,which ensures the security of data resources and has significant advantages.

关 键 词：区块链 控制方法 数据访问 误判率 安全性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]