Abstract
Authorization in collaborative systems is defined by a global policy that represents the combination of the collaborators’ access policies. However, the enforcement of such a global policy may create conflicting authorization decisions. In this paper, we categorize two types of conflicts that may occur in such policies. Furthermore, to resolve these conflicts and to reach a unique decision for an access request, we present an approach that uses XACML policy combining algorithms and considers the category of the detected conflicts. The approach is implemented using aspect-oriented finite state machines.
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Ayache, M., Erradi, M., Freisleben, B., Khoumsi, A. (2017). Aspect-Oriented State Machines for Resolving Conflicts in XACML Policies. In: El Abbadi, A., Garbinato, B. (eds) Networked Systems. NETYS 2017. Lecture Notes in Computer Science(), vol 10299. Springer, Cham. https://doi.org/10.1007/978-3-319-59647-1_13
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DOI: https://doi.org/10.1007/978-3-319-59647-1_13
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