GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES ELIMINATING DUPLICATE DATA WITH POS FOR MULTI USER ENVIRONMENT release_e4shhnkglbfubocqzf2qn3m3da

by Bhagawat Pooja, Bhagawat Pallavi, Bhor Ashwini, 2&3

Released as a article-journal .

(2017)

Abstract

Dynamic Proof of Storage (PoS) is a useful cryptographic primitive that enablesa user to check the integrity of outsourced less and to efficiently updatethe files in a cloud server. Although researchers have proposed many dynamicPoS schemes in single user environments, the problem in multiuser environmentshas not been investigated sufficiently. A practical multiuser cloudstorage system needs the secure client-side cross-user deduplication technique,which allows a user to skip the uploading process and obtain the ownership ofthe files immediately, when other owners of the same files have uploaded themto the cloud server. To the best of our knowledge, none of the existing dynamicPoSs can support this technique. In this system, we introduce the concept ofdeduplicatable dynamic proof of storage and propose an efficient constructioncalled DeyPoS, to achieve dynamic PoS and secure cross-user deduplication,simultaneously. Considering this challenges of structure diversity and privatetag generation. We will prove the security of our construction, and the theoreticalanalysis and experimental results which will show that our construction isefficient in practice.
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