Efficient Implementation of Proof of Retrievability (OPOR) In Cloud Computing With Resource Constrained Devices

Cloud computing has become an integral part of IT services, storing the application softwares and databases in large centralized shared data servers. Since it’s a shared platform, the data and services may not be fully trust worthy. In this work, we have implemented an efficient security model that ensures the data integrity of stored data in cloud servers. The computational load of data verification linearly grows with the complexity of the security model and this poses a serious problem at the resource constrained user’s end. Therefore to tackle this problem we have implemented a new cloud storage scheme which ensures proof of retrivebility (OPoR) at a third party cloud audit server to pre-process data before uploading into cloud storage server.