Dynamic group data share in cloud computing by user revocation using TPA

Abstract

The Cloud Utilizes gets scalable, secure and reliable environment from the Cloud Service Providers. Many Cloud Utilizes are and their data storage is subject to mistrust and scrutiny because data in an un-trusted cloud can be easily misplaced, corrupted or vanished due to integrity threats. Hence, in order to maintain the truthfulness of cloud, we need one Third person who will audit all the data which are stored in cloud. Such a person is called as Third Party Auditor (TPA). TPA provides auditing services to the users who give request to do so. PDP (Provable Data Possession) and WWRL (Wang et al.) are two mechanism which supports public auditing and data privacy but do not support identity privacy and block less verification. Hence
The identity privacy in dynamic group is achieved through the mechanism One Ring to Rule Them All. In this proposed mechanism Third Party Auditor is able to verify the truthfulness of shared data for a dynamic group of users without retrieving the whole data and also the user’s identity is also kept private from the TPA. Also supports batch auditing and dynamic operations during public auditing.
Keywords: public auditing; user revocation; dynamic group; share data; cloud computing.