ND-POR: A POR Based on Network Coding and Dispersal Coding
ND-POR: A POR Based on Network Coding and Dispersal Coding
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DOI：
10.1587/transinf.2015edp7011
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发表时间：
2015-08
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影响因子：
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通讯作者：
Kazumasa Omote;Tran Thao Phuong
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文献类型：
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作者：
Kazumasa Omote;Tran Thao Phuong
摘要如今，许多个人和组织倾向于将他们的数据外包到云存储，以减轻数据存储和维护的负担。然而，云提供商可能是不可信赖的。因此，云带来了大量的安全挑战：数据可用性、数据完整性和数据保密性(fi)。在本文中，我们关注数据可用性和数据完整性，因为它们是云系统存在的先决条件。本文的方法是基于网络编码的可检索性证明(POR)方案，允许客户检查他/她存储在云服务器上的数据是否完好无损。尽管已经提出了许多基于网络编码的POR方案，但它们大多在数据检查和数据修复方面存在较高的成本，并且不能防止POR方案中常见的小破坏攻击。本文提出了一种新的基于网络编码的分布式数据修复策略，称为ND-ffi(Network Coding-DIS散Coding Coding POR)，以提高数据检测和修复的效率，并防止微小的破坏攻击。
SUMMARY Nowadays, many individuals and organizations tend to outsource their data to a cloud storage for reducing the burden of data storage and maintenance. However, a cloud provider may be untrustworthy. The cloud thus leads to a numerous security challenges: data availability, data integrity, and data confidentiality. In this paper, we focus on data availability and data integrity because they are the prerequisites of the existence of a cloud system. The approach of this paper is the network coding-based Proof of Retrievability (POR) scheme which allows a client to check whether his / her data stored on the cloud servers are intact. Although many existing network coding-based PORs have been proposed, most of them still incur high costs in data check and data repair, and cannot prevent the small corruption attack which is a common attack in the POR scheme. This paper proposes a new network coding-based POR using the dispersal coding technique, named the ND-POR (Network coding - Dispersal coding POR) to improve the e ffi ciency in data check and data repair and to protect against the small corruption attack.