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.
出处
《东北师大学报(自然科学版)》
CAS
CSCD
北大核心
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
关键词
云存储
数据持有性检查
前向纠错码
代数签名
cloud storage
data possession checking
forward error-correcting code
algebraic signature