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高效可撤销的共享数据云存储审计 被引量:1

Efficient and Revocable Cloud Storage Auditing for Shared Big Data
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摘要 共享数据的云存储审计是指对群用户共享的云数据的完整性进行审计.由于在共享数据云存储审计中,用户可能因各种原因加入和离开用户群,因此这种方案通常支持群用户撤销.在大多数现存的共享数据云审计方案中,用户撤销的计算开销与用户群要上传的文件块总数成线性关系,造成很大的计算和通信代价,如何减少用户撤销产生的计算和通信开销成为实现共享云存储审计的关键问题.然而,本文在提出了一种高效可撤销的共享数据云存储审计方案,利用椭圆曲线技术实现了无对认证,利用中国剩余定理实现了高效的用户撤销,在保证安全用户撤销的基础上,极大地减少了共享数据云存储审计方案的通信和计算代价.此外,本方案采用基于身份密码学技术,解决了传统公钥密码学复杂的证书管理问题.安全性分析和实验结果表明了所提方案的可行性和高效性. Cloud storage auditing for shared data refers to the integrity auditing of cloud data shared by a group of users.Since users may join or leave user groups for various reasons,it usually supports user revocation.In most existing cloud storage auditing schemes for shared data,the computation cost of user revocation is linearly correlated to the number of file blocks to be uploaded by the user group,which results in high computation and communication costs.How to reduce the computation and communication overhead caused by user revocation has become a key issue for realizing shared cloud storage auditing.Therefore,this study proposes an efficient and revocable cloud storage auditing scheme for shared data,which uses the elliptic curve technology to achieve unpaired authentication and the Chinese remainder theorem to attain efficient user revocation.On the basis of ensuring safe user revocation,this scheme greatly reduces communication and computation costs.In addition,it uses identity-based cryptography technology to solve the complex certificate management problem of traditional public key cryptography.The safety analysis and experimental results show that the proposed scheme is both feasible and efficient.
作者 仪张倩 温琳雅 张维鑫 YI Zhang-Qian;WEN Lin-Ya;ZHANG Wei-Xin(School of Information Engineering,Chang’an University,Xi’an 710064,China)
出处 《计算机系统应用》 2022年第3期333-339,共7页 Computer Systems & Applications
关键词 数据共享 用户撤销 云存储 完整性审计 data sharing user revocation cloud storage integrity auditing
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