Secure Spaces: Location-Based Secure Wireless Group Communication

This paper defines "Secure Space" as an enclosed area within which wireless devices can participate in secure group communication. A device is able to join a secure space group by the virtue of its location within the enclosure. The devices communicate with each other using IEEE 802.11 wireless LAN or other similar wireless access technologies. There are two important aspects of this problem-determining and authenticating the location of a wireless device at the granularity of a secure space, and defining scalable mechanisms to (Re)-distribute a common group key among the device inside the secure space, as new devices enter and existing devices leave the space.