Multiple replica based remote data possession checking scheme based on matrix representation of data

Nowadays, Cloud computing became a prominent and fast developing technology in transforming and accessing the data at distant remote cloud servers. When users store their critical information on the cloud, the security concern on the scheme is that whether the integrity of file can be achieved. The Objective of the Remote data possession checking (RDPC) schemes is to check availability and integrity of the data without retrieving the original file or data. This paper proposes a multiple replica based RDPC scheme based on matrix representation of data and provides public verifiability through which a Third party auditor (TPA) can verify the possession of data at the servers, which increases the flexibility of the protocol. Unlike the other RDPC schemes, this scheme uses a stratified sampling technique which delivers better results than probabilistic proofs of possession. This also provides a proof checking scheme by which we can check the possession of the data without retrieving the original file.