Privacy preserving auditing protocol for remote data storage

In recent days, applications are becoming highly pervasive and enrich end user devices with various functionalities. The resource constraints at client side restrict the usage of many applications which need high storage and intensive computation. Cloud computing simplifies the deployment of large-scale distributed systems and enables advanced computational power with improved storage capabilities. Its evolution can be used for outsourcing data storage and processing. In spite of the relief, the clients no longer have control over their outsourced data which demands the purpose of ensuring the data intactness maintained by the Cloud Storage Server. For the verification of data correctness a third party trusted verifier is introduced in the proposed work which maintains dynamic metadata stored locally for the verification process. Bilinear mapping is used to ensure verification without retrieving the original data called blockless process. The verification proof generated using the proposed method is a small signature, which reduces the auditing overhead at the client side compared to existing solution. The proposed privacy preserving data auditing protocol relaxes the end users by reducing the computational overhead and achieves the verification of storage service.