云存储下基于代数签名的数据持有性检查方法  

Algebraic signature based data possession checking for cloud storage

作　　者：焦文喆[1] 王国庆[1] 翟正军[1] 郭阳明[1] 叶晓雪[2] 

机构地区：[1]西北工业大学计算机学院,陕西西安710072 [2]亚利桑那州立大学电气、计算机、能源工程学院,亚利桑那坦普85281

出　　处：《东北师大学报（自然科学版）》2013年第4期55-61,共7页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家重点基础研究发展计划项目;国家自然科学基金资助项目(61001023);西安市科技支撑计划项目

摘　　要：在远程数据持有性验证的基础上应用代数签名技术,提出了适用于云存储的数据完整性检查方案.引入前向纠错码,能够在少量数据丢失的情况下复原数据以提高数据的完整性.检查者在检查过程中并不需要持有原始数据,这将极大地降低通讯开销,同时,云用户的存储开销也限制在字节级.实验结果表明:所提方法是安全可证明的;系统的性能瓶颈是由磁盘速率决定的.Cloud computing has been envisioned as a next generation information technology （IT） paradigm. The risk of losing data stored with any untrustworthy service provider is the key barrier to widespread uptake of cloud computing. This paper proposes an algebraic signature based remote data possession checking （RDPC） scheme to verify the integrity of the data stored in the cloud. This scheme integrates forward error-correcting codes to enhance the data possession guarantee, which can recover the data when a small amount of file has been deleted. The scheme allows verification without the need for the auditor to compare against the original data, which reduces the communication complexity dramatically. The Storage complexity of cloud user is reduced to several bytes information. Extensive security analysis and simulation show that the proposed scheme is highly provably secure. Finally, experiment results reveal that the computation performance is effective,and bounded by disk I/O.

关 键 词：云存储 数据持有性检查 前向纠错码 代数签名 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]