Toward Access Control Model for Context-Aware Services Offloaded to Cloud Computing

Off loading context-aware services with intensive tasks to cloud computing infrastructures is useful. However, we have a problem resulting from differences between context-centric access control models for pervasive computing and subject-based access control models for cloud computing. To solve this problem, this paper proposes a location model for spatially specifying containment relationships of persons, physical entities, spaces, and computers. The model also manages context-centric access control models, and introduces an interface between pervasive computing and cloud computing programs. The interfaces enable context-aware services executed forthe latter to access computational resources and information under an access control model for the former. This paper presents the basic notion of the model and its prototype implementation.