Secure storage with replication and transparent deduplication

Document Type

Conference Proceeding

Publication Date

3-13-2018

Abstract

We seek to answer the following question: To what extent can we deduplicate replicated storage ? To answer this question, we design ReDup, a secure storage system that provides users with strong integrity, reliability, and transparency guarantees about data that is outsourced at cloud storage providers. Users store multiple replicas of their data at different storage servers, and the data at each storage server is deduplicated across users. Remote data integrity mechanisms are used to check the integrity of replicas. We consider a strong adversarial model, in which collusions are allowed between storage servers and also between storage servers and dishonest users of the system. A cloud storage provider (CSP) could store less replicas than agreed upon by contract, unbeknownst to honest users. ReDup defends against such adversaries by making replica generation to be time consuming so that a dishonest CSP cannot generate replicas on the fly when challenged by the users.

Identifier

85052018204 (Scopus)

ISBN

[9781450356329]

Publication Title

Codaspy 2018 Proceedings of the 8th ACM Conference on Data and Application Security and Privacy

External Full Text Location

https://doi.org/10.1145/3176258.3176315

First Page

13

Last Page

23

Volume

2018-January

Grant

CNS 1054754

Fund Ref

National Science Foundation

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