分布式存储系统与安全和精确的维修-新成果

R. Tandon, Saidhiraj Amuru, T. Clancy, R. Buehrer
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引用次数: 5

摘要

本文研究了存在被动窃听器的分布式存储系统(DSS)。典型的DSS具有3个参数(n, k, d)的特征,其中文件以分布式方式存储在n个节点上,以便可以从n个节点中的任何k个节点中完全恢复。当一个节点发生故障时,d个节点[k, n]参与修复过程。在本文中,我们研究了DSS的精确修复能力,其中故障节点被替换为其精确副本。保护DSS免受被动窃听者窃听任何l <的维修过程;K个节点,是本文的主要研究重点。具体来说,我们描述了当l = 1时(4,2,3)DSS和当l = n - 2时(n, n - 1,n - 1) DSS的最优安全存储与精确修复带宽权衡区域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Distributed storage systems with secure and exact repair — New results
Distributed storage systems (DSS) in the presence of a passive eavesdropper are considered in this paper. A typical DSS is characterized by 3 parameters (n, k, d) where, a file is stored in a distributed manner across n nodes such that it can be recovered entirely from any k out of n nodes. Whenever a node fails, d ϵ [k, n) nodes participate in the repair process. In this paper, we study the exact repair capabilities of a DSS, where a failed node is replaced with its exact replica. Securing this DSS from a passive eavesdropper capable of wiretapping the repair process of any l <; k nodes, is the main focus of this paper. Specifically, we characterize the optimal secure storage-vs-exact-repair-bandwidth tradeoff region for the (4, 2, 3) DSS when l = 1 and the (n, n - 1, n - 1) DSS when l = n - 2.
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