Home // International Journal On Advances in Software, volume 5, numbers 1 and 2, 2012 // View article

Modeling Disjunctive Context in Access Control

Authors:
Narhimene Boustia
Aicha Mokhtari

Keywords: Description logic; reasoner; disjunction; access control; context.

Abstract:
To provide dynamic authorizations to users, access control must take into account context. Using this idea, we develop a Contextual Multi-Level Access Control Model based on Description Logic with Default and Exception named DL-CMLAC. To give a formal representation of this model, we define a non monotonic description logic based system by which we can deal with default and exceptional language called JClassic+. It is an extension of JClassic in order to introduce disjunction of concepts. JClassic+ is expressive enough to be of pratical use, it can handle a ”weakened kind of disjunction” with the connective lcs allowing a tractable subsumption computation. The connective lcs has the same properties as the LCS external operation to compute the least common subsumer of two concepts. Connectives of JClassic+ are used in a cleaver way to represent authorization in a default context, an exceptional context and composed context.

Pages: 110 to 120

Copyright: Copyright (c) to authors, 2012. Used with permission.

Publication date: June 30, 2012

Published in: journal

ISSN: 1942-2628