Abstract
Solving conflicts in authorization delegation has not been considerably explored by researchers. In [5] we proposed a graph based framework supporting authorization delegation and conflict resolution. We proposed a predecessor-take-precedence based conflict resolution method, which gives higher priorities to the predecessors along the delegation paths to achieve the well-controlled delegations. In this paper, we further extend the model to allow grantors to express degrees of certainties about their delegations and grants of authorizations. This expression of certainty gives subjects more flexibility on the control of their delegations of access rights. A new conflict resolution policy based on weighted lengths of authorization paths is proposed. This policy deals with the conflicts in a more flexible way in that not only the relationship of predecessor-successor but also the weights of authorizations are taken into consideration. Cyclic authorizations are allowed to further enhance the expressive flexibility, and the undesired situations caused by them can be avoided through the proposed conflict resolution method. The intuitive graph interpretation provides a formal basis for the underlying semantics of our model.
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References
Castano, S., Fugini, M., Martella, G., Samarati, P.: Database Security. Addison-Wesley Publishing Company, Reading (1995)
Essmayr, W., Kastner, F., Preishuber, S., et al.: Access controls for federated database environments-taxonomy of design choices. In: Joint IFIP TC 6 & 11 Working Conference on Communications and Multimedia Security Chapman & Hall, Graz, Austria, Septemper 1995, pp. 117–132 (1995)
Jajodia, S., Samarati, P., Subrahmanian, V.S., Bertino, E.: A unified framework for enforcing multiple access control policies. In: Proc. of ACM SIGMOD Conference on Management of Data, pp. 474–485 (1997)
Lunt, T.F., Denning, D.E., Scheel, R.R., Heckman, M., Shockley, W.R.: The SeaView security model. IEEE Trans. on Software Engineering 16(6), 593–607 (1990)
Ruan, C., Varadharajan, V.: Resolving conflicts in authorization delegations, 2002. In: Proceedings of the 7th Australasian Conference on Information Security and Privacy, pp. 271–285 (2002)
Sandhu, R., Samarati, P.: Access control: Principles and practice. IEEE Communications 32(9), 40–48 (1994)
Satyanarayanan, M.: Interating security in a large distributed system. ACM-TOCS 7(3), 247–280 (1989)
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© 2004 Springer-Verlag Berlin Heidelberg
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Ruan, C., Varadharajan, V. (2004). A Weighted Graph Approach to Authorization Delegation and Conflict Resolution. In: Wang, H., Pieprzyk, J., Varadharajan, V. (eds) Information Security and Privacy. ACISP 2004. Lecture Notes in Computer Science, vol 3108. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-27800-9_35
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DOI: https://doi.org/10.1007/978-3-540-27800-9_35
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-22379-5
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