Data deduplication may be a methodology of reducing storage want, which has elimination of redundant information. Only 1 distinctive instance of the information is really maintained on storage media. Information deduplication is additionally called “intelligent compression” or “single-instance-storage”. It’s been wide employed in cloud storage to cut back the number of space for storing and save information measure. To shield confidentiality of sensitive information whereas supporting deduplication, the encoding technique has been projected. To raised shield information security, we have a tendency to create an effort to formally address the matter of licensed information deduplication. Totally different from previous deduplication systems, the differential privileges of users area unit any thought-about in duplicate check beside the information itself. We have a tendency to given a brand new deduplication construction supporting licensed duplicate register hybrid cloud design. Security analysis demonstrates that our schema is secure in terms of the definitions per the projected security model. We have a tendency to show that our projected schema of licensed deduplication incurs borderline overhead compared to traditional operations.

K.Pushpalatha,B. Ranjithkumar."Secure Approved Deduplication in Hybrid Cloud". International Journal of Computer Engineering In Research Trends (IJCERT) ,ISSN:2349-7084 ,Vol.2, Issue 10,pp.853-856, October- 2015, URL :https://ijcert.org/ems/ijcert_papers/V2I1011.pdf,

[1] S. Quinlan and S. Dorward. Venti: a new approach to archival storage. In Proc. USENIX FAST, Jan 2002. 
[2] J. R. Douceur, A. Adya, W. J. Bolosky, D. Simon, and M. Theimer. Reclaiming space from duplicate files in a serverless distributed file system. In ICDCS , pages 617–624, 2002. 
[3] Jin Li, Yan Kit Li, Xiaofeng Chen, Patrick P. C. Lee, Wenjing Lou. A Hybrid Cloud Approach for Secure Authorized Deduplication M. Wegmuller, J. P. von der Weid, P. Oberson, and N. Gisin, “High resolution fiber distributed measurements with coherent OFDR,” in Proc. ECOC’00, 2000, paper 11.3.4, p. 109. 
[4] M. Bellare, S. Keelveedhi, and T. Ristenpart. Message-locked encryption and secure deduplication. In EUROCRYPT, pages 296–312, 2013. 
[5] M. Bellare, C. Namprempre, and G. Neven. Security proofs for identity-based identification and signature schemes. J. Cryptology, 22(1):1–61, 2009. 
[6] S. Bugiel, S. Nurnberger, A. Sadeghi, and T. Schneider. Twin clouds: An architecture for secure cloud computing. In Workshop on Cryptography and Security in Clouds (WCSC 2011), 2011.
 [7] M. W. Storer, K. Greenan, D. D. E. Long, and E. L. Miller. Secure data deduplication. In Proc. of StorageSS, 2008.
 [8] J. Li, X. Chen, M. Li, J. Li, P. Lee, and. Lou. Secure deduplication with efficient and reliable convergent key management. In IEEE Transactions on Parallel and Distributed Systems, 2013.