NDLI: Integrity Verification of Multiple Data Copies over Untrusted Cloud Servers

Content Provider	IEEE Xplore Digital Library
Author	Barsoum, A.F. Hasan, M.A.
Copyright Year	2012
Abstract	For an increased level of scalability, availability and durability, some customers may want their data to be replicated on multiple cloud servers. The more copies the cloud service provider (CSP) is asked to store, the more fees the customers are charged. In this paper, we propose a pairing-based provable multi-copy data possession (PB-PMDP) scheme, which provides an evidence to the customers that all outsourced copies are actually stored and remain intact. Moreover, it allows authorized users (i.e., those who have the right to access the owner's file) to seamlessly access the file copies stored by the CSP, and supports public verifiability. The proposed scheme is proved to be secure against colluding servers. We illustrate the performance of the PB-PMDP scheme through theoretical analysis, which is validated by experimental results. The verification time of our scheme is practically independent of the number of file copies. Additionally, we discuss how to identify corrupted copies by slightly modifying the proposed PB-PMDP scheme.
Starting Page	829
Ending Page	834
File Size	341016
Page Count	6
File Format	PDF
ISBN	9781467313957
DOI	10.1109/CCGrid.2012.55
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-13
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Servers Cryptography Outsourcing Cloud computing Games Organizations cryptographic protocols Outsourcing data storage data integrity
Content Type	Text
Resource Type	Article

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