RTFW: An Access Control Model for Workflow Environment

Access control service is a mandatory function in WFMSs. How to apply a suitable access control model to WFMSs is a challenging issue. In this paper, we present a new model, RTFW, which combines the sense of RBAC and TBAC to meet the need of WFMSs. The model addresses the famous security issue, namely SoD, simplifies the methodology of assigning permissions in WFMSs. Furthermore, the article presents some implementing issues for this model