Sylvia Osborn - University of Western Ontario

Nov 19, 2008

Size: 577.3MB

Download: Video Icon MP4 Video  
Watch in your Browser   Watch on Youtube Watch on YouTube

"The Role Graph Model and its Extensions"


The Role Graph Model was first introduced by Nyanchama and Osborn in 1994. It has been extended over the years to include parameterized roles, an administrative model and a delegation model. We will show how the semantics of our role graph operations differ from those of the ANSI standard. Then we will discuss how to simulate DAC, and how the underlying basic model helped us to understand and expand the model to deal with delegation. The present and future of RBAC will also be discussed.

About the Speaker

Sylvia Osborn received her PhD from the University of Waterloo. Since 1977 she has been a faculty member in the Computer Science Department at the University of Western Ontario in London, Ontario, Canada, for which she has briefly acted as Chair. She is the author of numerous research papers, starting in the database field in dependency theory, and object-oriented databases. More recently she has been active in research into role-based access control including administration of access control, delegation, access control in the semantic web and database intrusion detection.

Unless otherwise noted, the security seminar is held on Wednesdays at 4:30P.M. STEW G52 (Suite 050B), West Lafayette Campus. More information...