Dynamic Audit Services for Achieving Data Integrity in Clouds

Abstract: Cloud computing is a forthcoming revolution in information technology (IT) industry because of its performance, accessibility i.e., cloud storage enables users to access their data anywhere and at any time, pay per use service. Cloud computing is a way to increase the capacity or add capabilities dynamically without investing in new infrastructures, training new personnel or licensing new software. Cloud enables users to remotely store their data and enjoy on-demand high quality cloud applications without the burden of local storage and maintenance. Eventhough, the benefits are higher while storing data in cloud there may be chances for security risks such as missing or corruption of data. To ensure the data integrity and availability of the data we are using the auditing scheme. Thus, enabling public auditability for cloud storage is of critical importance so that the users can resort to the third party auditor (TPA) to check the integrity of outsourced data and can be worry-free. For this in our proposed scheme we are using the provable data possession (PDP) which is the cryptographic technique for verifying the integrity of data without retrieving it at an untrusted server which achieve zero knowledge property and the communication cost is also reduced here.

Keywords: cloud computing, data integrity, cloud storage, provable data possession, audit service.