Protecting Outsourced Data in Cloud Using Deduplication and Enhancing Key Management

Abstract: Data Deduplication is a technique used in cloud storage to remove duplicate copies of similar data. The main motive of deduplication is to reduce storage space and improve bandwidth. In order to provide security and privacy to outsourced data encryption techniques are used. Encryption is performed by generating keys. To attain efficiency and reliability in managing a huge number of keys, a scheme called Dekey is introduced. Dekey is implemented using ramp Secret Sharing Scheme. Dekey provides a way to reduce overhead by distributing convergent keys across multiple servers. This paper also proposes a means of sharing data among multiple users.

Keywords: Data Deduplication, Encryption, Dekey, Ramp Secret Sharing Scheme.