In this work, we study the problem of duplication of data on cloud and develop a method to achieve data deduplication. His paper gives a solution for storing the data on cloud without duplicate copies and also ensures security to the stored data with encrypting it before uploading to the cloud. Since last decade, cloud computing is one of the biggest innovative technologies; it provides the facility of heavy data maintenance and management by improving data sharing and data storing capabilities. The main threat for this cloud data storage is data security in terms of maintains data integrity and datadeduplication on cloud. Handling both issue sane time is the difficult task. SecCloud and SecCloud+ are two new cloud auditing systems which help in maintaining cloud data integrity with efficient data deduplication, In SecCloud system, user can able to generate data tags before storing data on cloud which helps during performing audit to check integrity of data, other side SecCloud+ system provide encryption of data before uploading it, which enables integrity check and secure deduplication of encrypted data.
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Cloud computing, Data integrity, Auditing, Data deduplication