enter search term and/or author name
Guest editorial: Special issue on access control models and technologies
Formal model and policy specification of usage control
Xinwen Zhang, Francesco Parisi-Presicce, Ravi Sandhu, Jaehong Park
The recent usage control model (UCON) is a foundation for next-generation access control models with distinguishing properties of decision continuity and attribute mutability. A usage control decision is determined by combining authorizations,...
X-gtrbac admin: A decentralized administration model for enterprise-wide access control
Rafae Bhatti, Basit Shafiq, Elisa Bertino, Arif Ghafoor, James B. D. Joshi
The modern enterprise spans several functional units or administrative domains with diverse authorization requirements. Access control policies in an enterprise environment typically express these requirements as authorization constraints. While...
Access control to people location information
Urs Hengartner, Peter Steenkiste
Ubiquitous computing uses a variety of information for which access needs to be controlled. For instance, a person's current location is a sensitive piece of information that only authorized entities should be able to learn. Several challenges arise...