Privacy Preserving Public Auditing for Secure Cloud Storage-Replica

Using cloud computing user will be able to store and secure their data without burden of local computer. Additionally, users should be able to just use the cloud storage as if it is local, without distressing about the need to verify its integrity. By enabling and using public audit for cloud storage, it can check the integrity of the data. Finding data that are corrupted using this is difficult. To have original data integrity for our cloud user by cloud server provider (CSP) replica should be taken. We 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.