Distributed storage systems with secure and exact repair - New results

Ravi Tandon, Sai Dhiraj Amuru, T. Charles Clancy, R. Michael Buehrer

Research output: Contribution to conferencePaperpeer-review

5 Scopus citations

Abstract

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 [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.

Original languageEnglish (US)
DOIs
StatePublished - 2014
Externally publishedYes
Event2014 IEEE Information Theory and Applications Workshop, ITA 2014 - San Diego, CA, United States
Duration: Feb 9 2014Feb 14 2014

Other

Other2014 IEEE Information Theory and Applications Workshop, ITA 2014
Country/TerritoryUnited States
CitySan Diego, CA
Period2/9/142/14/14

ASJC Scopus subject areas

  • Computer Science Applications
  • Information Systems

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