An Authorized Identity Authentication-based Data Access Control Scheme in Cloud

Cloud computing is a newfound service which has a rapid growth in IT industry recent years. Despite it has a huge contribution to the development of the technology and society, the cloud still exists some security deficiencies to block its development such as data leakage, illegal access and privacy risks. Hence, access control and user authentication is very important in cloud environment. Some related access control schemes has been proposed to solve the security problems in cloud, however, the high computation cost is a crucial factor in practical use. In this paper we propose a novel lightweight identity authenticationbased access control scheme for cloud, due to adopt an authorized agency to assist the authentication and key distribution, this scheme is more efficient and practical than the related work.