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Poster: Proofs of Retrievability with Low Server Storage

Published: 06 November 2019 Publication History

Abstract

Proof of Retrievability (PoR) and Provable Data Possession (PDP) schemes have been proposed to ensure the integrity of stored data on untrusted servers. A successful PoR audit ensures, with high probability, that every piece of stored data is recoverable by the server. Most PoR schemes proposed have focused on bandwidth and computation cost, but in some deployment scenarios the size of remote storage can be the most expensive factor. We propose a simple PoR scheme which is a variant on some existing PDP work. Compared to existing audit routines, the server computation cost and bandwidth are higher, but the server storage cost is minimal. Our preliminary work indicates that deploying this scheme may be less costly in commercial cloud settings, depending on the cost structure and frequency of audits.

References

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    cover image ACM Conferences
    CCS '19: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security
    November 2019
    2755 pages
    ISBN:9781450367479
    DOI:10.1145/3319535
    Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

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    Published: 06 November 2019

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    1. data integrity
    2. proof or retrievability

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    CCS '19 Paper Acceptance Rate 149 of 934 submissions, 16%;
    Overall Acceptance Rate 1,261 of 6,999 submissions, 18%

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