A Similarity Measure for Comparing XACML Policies

  title={A Similarity Measure for Comparing XACML Policies},
  author={Dan Lin and Prathima Rao and Rodolfo Ferrini and Elisa Bertino and Jorge Lobo},
  journal={IEEE Transactions on Knowledge and Data Engineering},
Assessing similarity of policies is crucial in a variety of scenarios, such as finding the cloud service providers which satisfy users' privacy concerns, or finding collaborators which have matching security and privacy settings. Existing approaches to policy similarity analysis are mainly based on logical reasoning and Boolean function comparison. Such approaches are computationally expensive and do not scale well for large heterogeneous distributed environments (like the cloud). In this paper… CONTINUE READING