Secure Distributed Deduplication Systems with Improved Reliability

Abstract

Data deduplication is a technique for eliminating duplicate copies of data, and has been widely used in cloud storage to reduce the storage space and upload the bandwidth. Whenever 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, de duplication system improves and increase storage with a utilization while reducing reliability. Furthermore, the challenge of privacy for sensitive data also arises when they are outsourced by users to cloud storage and Aiming to address are given the security challenges, this paper makes the first attempt to formalize the conception of distributed reliable de duplication system. We propose new distributed de duplication systems with higher reliability in which the data chunks are distributed across multiple cloud servers.

The security requirements of the data confidentiality and tag consistency are also achieved by introducing a deterministic with secret sharing scheme in distributed storage those systems, instead of using convergent encryption as in previous de duplication systems. The Security analysis is a demonstrates that our de duplication systems are secure and private in terms of the definitions specified in the proposed security model. As a proofof concept, we implement the proposed systems and demonstrate that the incurred overhead is very limited in realistic environments