A Hybrid Cloud Approch for Secure Authorized Deduplication Authors
Ashwini Ahire, Kamini Ahire, Neha Bhangale · 2014
Now a days, huge demand of cloud computing is present, due to large number of duplicate data occur in memory. There is Wastage of large amount of storage memory space which makes need of Deduplication. Deduplication is one of important data compression techiques used for eliminating the duplicate data and save bandwidth. .In existing approach, deduplication cannot support differential authorization duplicate check, which is important in many applications. In proposed system convergent encryption technique supporting for differential authorization . Each authorized user is able to get his or her individual token of his file to perform duplicate check based on his privileges. We also present several new deduplication constructions supporting authorized duplicate check in hybrid cloud architecture. Hybrid cloud architecture include public cloud architecture and private cloud architecture. Existing data deduplication system, the private cloud is involved as a proxy to allow data owner or user to securely perform duplicate check with differential privilege and public cloud. In pervious deduplication encryption system requries differnt users to encrypt their data with their own keys ,thus identical data copies of different users will lead to different ciphertexts so making deduplication is impossible .In proposed system ,convergent encryption technique is used to enforce data confidentiality while making deduplication feasible. Storage cloud service provider is an entity that provides a data storage service in public cloud.