《计算机应用研究》|Application Research of Computers

云存储中基于MHT的动态数据完整性验证与恢复方案

Dynamic data integrity verification and recovery scheme in cloud storage based on MHT

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作者 李敬伟,朱命冬
机构 1.河南工学院 计算机科学与技术学院,河南 新乡 453002;2.东北大学 计算机科学与工程学院,沈阳 110006
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文章编号 1001-3695(2019)07-055-2179-05
DOI 10.19734/j.issn.1001-3695.2018.01.0097
摘要 针对云服务器上存储数据完整性验证过程中的高通信开销和动态数据验证问题,提出一种基于Merkle哈希树(MHT)的动态数据完整性验证与恢复方案。首先,基于MHT构建了一种新型分层认证数据结构,将数据块的每个副本块组织成副本子树,以此大幅降低多副本更新验证的通信开销。然后,在数据验证中融入了对服务器安全索引信息的认证,以此避免服务器攻击。最后,当发现数据损坏时,通过二分查找和Shamir秘密共享机制来恢复数据。实验结果表明,该方案在验证过程中能有效降低计算和通信开销,并能够很好地支持数据的动态操作。
关键词 云存储; 数据完整性验证; Merkle哈希树; 动态数据; 数据恢复
基金项目 河南省高等学校重点科研项目(19B520005)
河南省高等学校重点科研项目(18B520011)
本文URL http://www.arocmag.com/article/01-2019-07-055.html
英文标题 Dynamic data integrity verification and recovery scheme in cloud storage based on MHT
作者英文名 Li Jingwei, Zhu Mingdong
机构英文名 1.College of Computer Science & Technology,Henan Institute of Technology,Xinxiang Henan 453002,China;2.College of Computer Science & Engineering,Northeastern University,Shenyang 110006,China
英文摘要 For the issues that the high communication overhead and dynamic data verification in the storage data integrity verification process on the cloud server, this paper proposed a dynamic data integrity verification and recovery scheme based on Merkle hash tree(MHT). Firstly, it constructed a new layered authentication data structure based on MHT, and organized each copy block of the data block into a copy sub-tree, thereby greatly reducing the communication overhead of multi-copy update verification. Then, it certified the server security index information authentication into the data validation, in order to avoid server attacks. Finally, it recovered the data by dichotomous discovery and Shamir's secret sharing mechanism when the data is corrupted. The experimental results show that this scheme can effectively reduce the computational and communication overhead and can support the dynamic operation of data in the verification process.
英文关键词 cloud storage; data integrity verification; Merkle hash tree; dynamic data; data recovery
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收稿日期 2018/1/15
修回日期 2018/4/2
页码 2179-2183,2194
中图分类号 TP391
文献标志码 A