A User-Centric Privacy Access Control Model

Privacy is considered to be a critical issue for providing high quality ubiquitous network services to users over the Internet. User´s privacy should be protected and access to privacy information must be controlled in accordance with user´s privacy preferences. Existing privacy-aware access control strategies often store all the privacy access control policies on the server side and thus fail to consider the dynamic nature of privacy preferences. In this paper, we propose a user-centric privacy-enhanced access control model and show that our model takes the dynamic nature of user´s privacy preferences into consideration and can thus fulfill any kind of privacy requirements. By separating access policies apart from privacy policies, which are now stored at user side and therefore fully under user´s control, we demonstrate that our model can provide users with a flexible way of controlling privacy policies that are consistent with their preferences.