摘要
为了解决系统中文件在访问控制时存在安全隐患、访问响应及重加密时间过长等问题,研究主流知识图谱存储系统并发访问控制方法。利用混沌映射改进的数字加密标准算法加密和解密主流知识图谱存储系统中的文件,通过最小化属性分组算法,对已撤销用户浏览过的文件重新加密,降低重加密属性数量的同时,构建以加密算法作为基础的并发访问控制模型,进一步提升文件访问控制的安全性,结合文件访问共同实现主流知识图谱存储系统并发访问控制。经实验分析,上述方法在用户提出并发访问请求时,时间开销更小,响应时间更短,重加密和解密效率更高,能够提高主流知识图谱存储系统文件的安全性。
During access control,the files in the system have high security risks,long access response time and re-encryption time.This paper designed a concurrent access control method for mainstream knowledge map storage system.The improved digital encryption standard algorithm of chaotic mapping was applied to encrypt and decrypt the files in the mainstream knowledge map storage system.According to the minimization attribute grouping algorithm,the files browsed by revoked users were re-encrypted.Not only the number of re-encryption attributes was reduced,but also a concurrent access control model based on encryption algorithm was built to improve the security of file access control.Then,the concurrent access control of mainstream knowledge map storage system was completed by file access.The results show that this method has shorter time overhead and response time,higher re-encryption and decryption efficiency,indicating that the file security of the mainstream knowledge map storage system is improved.
作者
韩斌
钱涵笑
HAN Bin;QIAN Han-xiao(Jiangsu University of Science and Technology Computer Simulation,Zhenjiang Jiangsu 212000,China)
出处
《计算机仿真》
北大核心
2023年第3期333-337,共5页
Computer Simulation
基金
《河南省二0一八年科技发展计划》科技攻关计划项目(豫科[2018]19号,182102210024)。
关键词
主流
知识图谱
存储系统
并发
访问控制
数字加密标准
Mainstream
Knowledge map
Storage system
Concurrent
Access control
Digital encryption standard
