Abstract
Computing is a utility computing such asPay-as-you-go computing, Illusion of Infinite Resources, No UpfrontCost, Fine grained billing. User's store their large amountof data on a cloud severs at remote place without worryingabout Storage Correctness as well as information Integrity. Sothat users can option to a Third Party Auditor (TPA) to testthe data integrity and be worry-free because user does not physical present at all time. The Third Party Auditor(TPA) performs audits for multiple cloud users simultaneouslyand efficiently.In this paper, proposed scheme contain data files dividedinto small block technique. which ensure cloud storage security, integrity. To increase the user level security we proposed One Time Password (OTP) at the time of file uploading. Partitioning process implemented at TPA side. TPA performs operation like data files divided into small part of block, take hash of each block, each block Encrypt using cryptographic algorithm.
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