Security Architecture in Gaia

Ubiquitous computing promotes physical spaces with hundreds of computational devices extending the user''s view of the computational environment beyond the physical limitations of a traditional distributed system. Gaia OS is a middleware operating system that makes the realization of such spaces a possibility. In any such environment Security and Privacy are primary concerns and mechanisms to solve them have to be built into the very core of the system so that their deployment is acceptable and feasible. In this paper we describe a security architecture for Gaia OS and Active Spaces. Our architecture provides dynamism and flexibility to manage the security concerns in such a computing systems.