TOWARDS A SESSION BASED OrBAC MODEL

A collabor ative system allow; a grou p of users to collaborate through a distr i buted platform in order to perform a c ommon task. These users may h av e conc urrent access to shared objec ts. In this contex t, access con trol becomes an important issue tha t must be addressed Access control models are des igned to pro tect shared information a nd resources, of any type and at different levels of granularity. In this work we present SOrBAC: an extension of OrBAC model, in order to provide a mechanism f or securing a dynamic collaborative Session. SOrBAC introduces a new level named Session level to the original OrBAC model. This session level introduces new entities to allow a dynamic access control during a collaborati ve session.