Temporal Authorization Graphs: Pros, Cons and Limits

R. Stojanov, O. Popovski, M. Jovanovik, E. Zdravevski, P. Lameski, and D. Trajanov. Smart Objects and Technologies for Social Good (GOODTECHS 2021) , volume 401 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, page 105--120. Springer International Publishing, (January 2022)


As more private data is entering the web, defining authorization about its access is crucial for privacy protection. This paper proposes a policy language that leverages SPARQL expressiveness and popularity for flexible access control management and enforces the protection using temporal graphs. The temporal graphs are created during the authentication phase and are cached for further usage. They enable design-time policy testing and debugging, which is necessary for correctness guarantee.

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