New Hybrid Approach for Secure Data Storage in Cloud Computing Environment

Abstract

> Cloud storages in cloud data centers are used for enterprises and individuals to store and access their data remotely anywhere anytime without any additional burden. By data outsourcing, users can relieve the burden of local data storage and maintenance. However, one of the major problems of cloud environment is data storage security. Therefore, data auditing is introduced to verify the data in the cloud storages with the aid of Third Party Auditor (TPA). However, the TPA is leased by cloud service provider and after a time the provider may contract with the TPA to conceal the loss of data from the user to prevent the defamation. This paper presents a new hybrid approach for data storage security in cloud computing to protect organizations’ data from the cloud provider, the third party auditor and some users who may use their old accounts to access the data stored on the cloud. The hybrid approach enhances the authentication level of security by combining two efficient authentication techniques; Time-based One Time Password (TOTP) for cloud users verification and Automatic Blocker Protocol (ABP) to fully protect the system from unauthorized TPA. The experimental results demonstrate the effectiveness and efficiency of the proposed approach when auditing shared data integrity.