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The Cloud is a plateform where all users not only store their data but also used the software and services provided by Cloud Service Provider (CSP). The service provided by the cloud is very economical. The user pay only for what he used. This is a platform where data owner remotely store their data in the cloud to enjoy the high quality applications and services. The user can access the data, use the data and store the data. In a Corporate world there are large number of client who accessing their data and modifying a data. In Cloud, application software and services are move to the centralized large data center and management of this data and services may not be trustworthy. To manage this data we use third party auditor (TPA). It will check the reliabilty of data but it increases the data integrity risk of data owner. Since TPA not only read the data but also he can modify the data, therefore a mechanism should be provided who solved this problem. We first examine the problem and new potential security scheme used to solve this problem. Our algorithm encrypt the content of file at user level which ensure the data owner and client that there data are intact. Side by side it also preserves the data dynamics and consistency of n number of client and server.