Secure Patient-Centric Frame Work in Cloud Computing Using Attribute Based Encryption

Abstract: The use of cloud computing has increased rapidly in many organizations. Cloud computing provides many benefits in terms of low cost and accessibility of data. Several trends are opening up the era of Cloud Computing that is mainly focusing on internet usage and storage, use of computer technology. Moving data into the cloud offers great convenience for users to remotely store their data and enjoy the on-demand high quality cloud applications without the obligation of local hardware and software management. As the benefits are well-defined, such a service is also relinquishing users physical possession of outsourced data, which certainly posses new security risks toward the correctness of the data in cloud and to increase the profit margin by reducing cost, it is possible for cloud service provider to discard rarely accessed data without being detected in a timely fashion and even attempt to hide data loss incidents so as to maintain a reputation. In order to address this new problem and further achieve a secure and dependable cloud storage service, we propose in this paper flexible distributed storage integrity auditing mechanism with effective service level agreement, utilizing the homomorphic token and distributed erasure-coded data. The proposed design allows users to audit the cloud storage and this auditing result not only ensures storing cloud storage correctness guarantee, but also concurrently achieves immediate data error localization, i.e., the identification of misbehaving server. Considering the cloud data are dynamic in nature the proposed design supports secure and efficient dynamic data operations on outsourced data .

Keywords: Auditing Mechanism, Data Integrity, Distributed Storage, Error Verification, Dynamic Data Operations And Service Level Agreements.