An A-RBAC mechanism for a multi-tenancy cloud environment

With the evolution of software technology, companies require more high-performance hardware to enhance their competitiveness. Cloud computing is the result of distributed computing and grid computing processes and is gradually being seen as the solution to the companies. Cloud computing can virtualizes existing software and hardware to reduce costs. Thus, companies only require high Internet bandwidth and devices to access cloud service on the Internet. This would decrease many overhead costs and the number of IT staff required. When many companies rent a cloud service simultaneously, this is called a multi-tenancy cloud service. However, how to access resource safely is important if adopt multi-tenancy cloud computing technology. The cloud computing environment is vulnerable to network-related attacks. This research improves the role-based access control authorization mechanism and combines it with attribute check mechanism to determine which tenant that user can access. The enhanced authorization can improve the safety of cloud computing services and protected the data privacy.