Elimination of Redundant Data in Cloud with Secured Access Control

Cloud computing provides a new way of service by offering various resources over Internet. One of the important service provided by cloud service is data storage. In order to preserve the privacy of users, these data are stored in cloud in an encrypted form. Deduplication becomes crucial and a challenging task when the data is stored in encrypted form, which also leads to complexity in storing large data and processing in cloud. A traditional deduplication method does not work on encrypted data. Existing solutions available for deduplicating encrypted data has various security issues. They does not provide access control and revocation in terms of storage. Hence, the deduplication schemes are not mostly deployed in practice. In this paper, we propose a technique to deduplicate encrypted data stored in cloud based on access control thereby avoiding redundant storage. It integrates cloud data deduplication with access control. The result of our scheme shows superior efficiency and has potential for practical deployment in the case of huge data storage.