Revocation and Security Based Ownership Deduplication of Convergent Key Creating in Cloud
Data deduplication is a technique for decreasing the amount of storage space for an organization needs to save its data. In many organizations, the storage systems have duplicate copies of many pieces of data and its information. For example, an equivalent file may be saved in several places by many users, or two or more files that aren't equivalent may still include much of the same data. Deduplication remove these extra copies by saving just one copy of the data and changing the other copies with pointers that lead back to the original copy. In this paper first attempt to conventionally address the problem of resolve dynamic and reliable key management in deduplication. In the baseline approach each user holds a separate master key for encrypting the convergent keys and redistributes them to the cloud. And we propose a method Deckey, a new construction in which users are not need to manage any keys on their own. Security analyses establish that Deckey is secure in terms of the exposition specified in the proposed security model. As a proof of concept, we implement Deckey using the Ramp secret sharing scheme and determine that Deckey acquire limited overhead on realistic environments.