A Context-Aware System to Secure Enterprise Content

In this paper, we present an architecture and implementation of a secure, automated, proximity-based access control that we refer to as Context-Aware System to Secure Enterprise Content (CASSEC). Using the pervasive WiFi and Bluetooth wireless devices as components in our underlying positioning infrastructure, CASSEC addresses two proximity-based scenarios often encountered in enterprise environments: Separation of Duty and Absence of Other Users. The first scenario is achieved by using Bluetooth MAC addresses of nearby occupants as authentication tokens. The second scenario exploits the interference of WiFi received signal strength when an occupant crosses the line of sight (LOS). Regardless of the scenario, information about the occupancy of a particular location is periodically extracted to support continuous authentication. To the best of our knowledge, our approach is the first to incorporate WiFi signal interference caused by occupants as part of proximity-based access control system. Our results demonstrate that it is feasible to achieve great accuracy in localization of occupants in a monitored room.