Search

Mobile Cloud Computing has emerged as a promising technology and its application is expected to expand its features in storing personal health information, e-governance and others. Although data security and privacy have been the major concern to the users. These issues originated from the fact that the cloud is a semi-trusted environment and the sensitive information stored in the cloud can be accessed by any unauthorized person. Thus, new methods and models are needed to solve the problem of privacy and security of data owner. In this paper, we attempt to address the concern of privacy and security of data owner. We first present a Mobility Node Model (MNM) where mobile client is coming from the external environment to the organization. Here data owner provides access of cloud data to mobile client via proxy server without revealing its identity. Second we propose a Centralized Owner Model (COM) as a centralized control mechanism which generates, key, group member details and mobile client accessibility for external and internal environment. Here request of mobile client is propagated via Trusted Leader to achieve optimality in terms of minimizing computation and communication overheads. The analysis of our proposed models demonstrate the efficiency to achieve the privacy and security in mobile cloud computing.