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All Journal International Journal of Informatics and Communication Technology (IJ-ICT)
Shubhanshi Singhal
Kurukshetra University
Computer Science & IT

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A secure deduplication scheme for encrypted data Vishal Passricha; Ashish Chopra; Pooja Sharma; Shubhanshi Singhal
International Journal of Informatics and Communication Technology (IJ-ICT) Vol 8, No 2: August 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (830.347 KB) | DOI: 10.11591/ijict.v8i2.pp77-86

Abstract

Cloud storage (CS) is gaining much popularity nowadays because it offers low-cost and convenient network storage services. In this big data era, the explosive growth in digital data moves the users towards CS to store their massive data. This explosive growth of data causes a lot of storage pressure on CS systems because a large volume of this data is redundant. Data deduplication is a most-effective data reduction technique that identifies and eliminates the redundant data. Dynamic nature of data makes security and ownership of data as a very important issue. Proof-of-ownership schemes are a robust way to check the ownership claimed by any owner. However to protect the privacy of data, many users encrypt it before storing in CS. This method affects the deduplication process because encryption methods have varying characteristics. Convergent encryption (CE) scheme is widely used for secure data deduplication, but it destroys the message equality. Although, DupLESS provides strong privacy by enhancing CE, but it is also found insufficient. The problem with the CE-based scheme is that the user can decrypt the cloud data while he has lost his ownership. This paper addresses the problem of ownership revocation by proposing a secure deduplication scheme for encrypted data. The proposed scheme enhances the security against unauthorized encryption and poison attack on the predicted set of data.
Co-Authors Ashish Chopra Pooja Sharma Vishal Passricha