Comparative Study of Public Auditing and Replica for Secure Cloud Storage

Using Cloud computing user can store their data secure without load of local user computer. And this feature additionally should be cable enough to provide user to maintain the cloud storage, as it is if same is maintained in the local, where no consideration required verifying the data integrity. On top by enabling and having public audit for cloud storage, which cab check the integrity of data. By audit finding the data corrupted is a huge task. To make the integrity of the data in cloud server Cloud Service Provider (CSP) should be able to have replica of user data. We here propose a secure cloud storage system supporting privacy preserving public auditing and having replica of the data which supports to retrieve the lost data. We further extend our result to have more efficient cryptographic algorithm to maintain the replica of data. Shown the performance and security analysis of the proposed schemes are provably secure and highly efficient.