Dynamic Activation of Role on RBAC for Ubiquitous Applications

In ubiquitous environment, users can access information anytime and anywhere via personal portable devices such as a cellular phone or a PDA. Therefore, unlike traditional approaches for access control, access control model should consider user´s situation information such as location, time, and system resources. In this paper, SA-RBAC (situation-aware RBAC) model, which dynamically grants roles (or permissions) to users, especially using dynamic activation of role on the RBAC, is proposed. The proposed SA-RBAC can be applied to various ubiquitous applications.