Abstract

Workflow technology is gaining major influence in many application domains. Especially, with the progress of the ubiquitous computing technology, a context-aware workflow has received considerable attention as a new workflow approach for a ubiquitous computing environment. This paper discusses security considerations for context-aware workflow systems and presents an architecture of a context-aware workflow authorization management (CAWAM) system. The CAWAM system offers management and enforcement of an authorization policy for context-aware workflow systems, and provides security-related context management functions. The CAWAM system utilizes the GCRBAC model for an access control service. In addition, the system supports a web-based policy management user interface.

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