An Efficient Auditing Protocol for Secure Data Storage in Cloud Computing

Cloud Computing is a type of distributed computing whereby resources and applications are shared over the internet. These applications are stored in one location and can be accessed in different location by any authorized users where the user does not need any infrastructure. In cloud storage, while outsourcing trust worthiness of the data is a scary task in cloud. To ensure the integrity of dynamic data stored in the cloud, external Third Party Auditor (TPA) is acquainted in a cloud infrastructure. For enabling public auditing in cloud data storage security, users can resort to an external auditor to check integrity of an outsourced data. The third party auditor (TPA) should met the following fundamental requirements: 1) TPA should be able to efficiently audit the cloud data without revealing the original data, and it should not add burden to the cloud user; 2) Auditing process should not bring no new vulnerabilities towards the user data. 3) Integrity of the data is protected against TPA by invoking some cryptographic techniques to ensure the storage correctness in cloud. In particular, this scheme achieves batch auditing where multiple delegated auditing tasks from different users, can be performed by the TPA and further enables TPA to perform data dynamics operations. Thus, the performance analysis depicts that the proposed schemes are more sheltered and highly competent.