基于双服务器PEKS框架的高效云存储系统  

Efficient Cloud Storage System Based on Dual Server PEKS Framework

作　　者：黄峰亮[1] 钱晓捷[2] HUANG Feng-liang;QIAN Xiao-jie(Practice Teaching Center, Zhengzhou Railway Vocational & Technical College, Zhengzhou 451460 China;School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China)

机构地区：[1]郑州铁路职业技术学院实践教学中心,郑州451460 [2]郑州大学信息工程学院,郑州450001

出　　处：《西南师范大学学报（自然科学版）》2020年第9期124-131,共8页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：河南省科技厅基础与前沿技术研究计划项目(152300410191).

摘　　要：为降低云存储用户成本并提高安全云存储效率,设计了一种多用户并发的云存储系统,提出基于双服务器关键字搜索的公钥加密(Public Key Encryption with Keyword Search,PEKS)搜索框架.设计的云存储系统通过存储引擎动态策略可以在多种存储方法之间自由切换,使用硬件负载平衡、中间缓冲和First-move First-failure策略来应对大量用户访问,提高请求响应率和系统稳定性;并行Master/Workers模式有效处理单个大文件请求,通过令牌机制进行文件传输恢复和并发传输.所提的双服务器PEKS搜索框架通过设计的线性同态平滑投影hash函数,使得所提搜索框架具有更高的安全性,解决传统PEKS的安全漏洞.实验结果表明,所提方案可以防止内部关键字猜测攻击,且其平均响应时间和计算效率优于现有其他方案.In order to reduce the cost of cloud storage users and to improve the efficiency of secure cloud storage,a multi-user concurrent cloud storage system has been designed,and a public key encryption with keyword search(PEKS)search framework based on dual server is proposed.The cloud storage system has been designed to freely switch between multiple storage method through the storage engine dynamic policy.It uses hardware load balancing,intermediate buffering and First-move First-failure strategy to deal with a large number of user access,improving request response rate and system stability.Parallel Master/Workers mode effectively handles a single large file request,and through the token mechanism for file transfer recovery and concurrent transmission.The proposed dual server PEKS search framework design a linear homomorphism smooth projection hash function,which makes the proposed search framework have higher security and solves the security vulnerabilities of traditional PEKS.The experimental results show that the proposed scheme can prevent internal keyword guessing attacks,and its average response time and computational efficiency are better than other existing schemes.

关 键 词：多用户并发 关键字搜索 双服务器 平滑投影hash函数 云存储系统 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]