Workflow and Role Based Access Control Model for Cloud Manufacturing

Cloud manufacturing employs some progressive issues, for example, the ideas of cloud computing. It extends the "Software as a Service" concept to "Manufacture as a Service", sharing the "manufacturing resources and manufacturing capability". Access control prevents illegal operations effectively by monitoring the user\´s behavior. This paper proposes an access control model for the cloud manufacturing environment that called WRBAC. Considering the architectures and characteristics of cloud manufacturing, the model uses layered structure to achieve the system-level access control. Based on ABAC, RBAC and TBAC, the model introduces workflow to achieve the process automation. During the mapping between tasks and services, access permission is controlled by distributed policy conditions. In order to strengthen the cross-domain cooperation access protection, this paper refines the authorization mechanism by using attributes and mirror roles. WRBAC can effectively guarantee the security of cloud manufacturing cross-domain environment. The model has strong adaptability and pertinence.