Secure Distributed Deduplication Systems With Improved Reliability
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Date
2016-07-14T11:29:00Z
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Abstract
Data deduplication is a technique for eliminating duplicate copies of data, and has been widely used in
cloud storage to reduce storage space and upload bandwidth. However, there is only one copy for each
file stored in cloud even if such a file is owned by a huge number of users. As a result, deduplication system
improves storage utilization while reducing reliability. Further more the challenge of privacy for sensitive
data also arises when they are outsourced by users to cloud. Aiming to address the above security
challenges, this paper makes the first attempt to formalize the notion of distributed reliable deduplication
system. We propose new distributed deduplication systems with higher reliability in which the data
chunks are distributed across multiple cloud servers .The security requirements of data confidentiality
and tag consistency are also achieved by introducing a deterministic secret sharing scheme in distributed
storage systems, instead of using convergent encryption as in previous deduplication systems. Security
analysis demonstrates that our deduplication systems are secure in terms of the definitions specified in
the proposed security model. As a proof of concept, we implement the proposed systems and
demonstrate that the incurred overhead is very limited in realistic environments.
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Secure Distributed Deduplication Systems With Improved Reliability, Chaitra R, Divya Jayaprada L, J Megha Shree, Mohmmed Jabir Hussain