There is a necessity to firmly manage, store, and examine enormous quantity of complex data i.e. semi-structure and unstructured to regulate configurations and developments in order to expand the feature and excellence. It is very essential that clouds be secure and protected because of the critical environment of the applications. The foremost security task using cloud is that the holder of the data possibly will not have control of where the data is located. If anyone who desires to exploit the advantages of using cloud computing, one must also use the resource sharing and scheduling delivered by clouds. The data stored on cloud may be possible altered or modified without the knowledge of client. There should be a mechanism that verifies the stored and the data being retrieved...........
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