Analysis and design of an optimized secure auditing protocol for storing data dynamically in cloud computing

Abstract

The remote server (Cloud Service Provider (CSP)) store their data on cloud servers and users can access their data from cloud servers while implementing the concept of cloud computing. Because of some security constraints in data outsourcing, the latest concept of data hosting service also arises new security challenges, those challenges can be handled by third party auditing service to check the data integrity in the cloud server. There are are few existing remote integrity checking methods those can serve for static stored data but not able to work dynamically. In this paper, we develop a three-tier security architecture for storing multimedia files which include role base access control, encryption, and signature verification. Therefore, an enhanced secure dynamic auditing protocol is proposed, which can store data correctly in the cloud. In the proposed scheme, both the combiner and the third party auditor (TPA) can verify the integrity of the information that they are receiving from each other. Therefore, the proposed an optimized secure dynamic auditing protocol is secure and efficient against various conspiracy attacks.