Download e-book for kindle: Security and Trust Management: 6th International Workshop, by Jason Crampton, Charles Morisset (auth.), Jorge Cuellar,

By Jason Crampton, Charles Morisset (auth.), Jorge Cuellar, Javier Lopez, Gilles Barthe, Alexander Pretschner (eds.)

ISBN-10: 3642224431

ISBN-13: 9783642224430

This publication constitutes the completely refereed post-conference lawsuits of the sixth overseas Workshop on safeguard and belief administration, STM 2010, held in Athens, Greece, in September 2010.
The 17 revised complete papers awarded have been conscientiously reviewed and chosen from forty submissions. concentrating on top of the range unique unpublished examine, case experiences, and implementation reviews, STM 2010 inspired submissions discussing the applying and deployment of safeguard applied sciences in practice.

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Extra resources for Security and Trust Management: 6th International Workshop, STM 2010, Athens, Greece, September 23-24, 2010, Revised Selected Papers

Sample text

We perform a comparative analysis between ASSA and the state-of-the-art tool in [19], called Stoller below. 32. A client-server architecture is the most obvious choice to implement the proposed symbolic backward reachability procedure. The client generates the sequence of formulae representing pre-images of the formula representing the goal. In addition, the client is also assumed to generate the formulae characterising the tests for fix-point or for non-empty intersection with the initial set of policies.

1 Introduction The usage control (UCON) model, proposed by Sandhu and Park [20], is a successor of access control which unifies recent advances in access control in one solid model. Access decisions in UCON are based on the values of attributes, similar to the attribute-based access control model [25]. The main peculiarity of UCON is the assumption that some attributes may change after granting access to a subject [16]. Thus, the access decision has to be made not only before a session, but also during the session.

It is an RBAC policy belonging to a certain class of firstorder structures. A configuration of Γ is a state M such that the cardinality of the domain of M is finite. ” The following example can help to grasp the underlying intuition. Example 10. As in Example 5, let TUser = ∅, TRole = ∅. (ua(u, r) ∧ u = eu0 ∧ r = er0 ). There is no bound on the number of pairs (eui , erk ) in a RBAC policy s satisfying the ∃-formula above provided that (eu0 , er0 ) ∈ s(ua). Our procedure for the reachability problem considers (only) those RBAC policies s of the form s(ua) = {(eu0 , er0 )} ∪ Δ where Δ is a (possibly empty) set of pairs (eui , erk ) with i, j = 0.

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Security and Trust Management: 6th International Workshop, STM 2010, Athens, Greece, September 23-24, 2010, Revised Selected Papers by Jason Crampton, Charles Morisset (auth.), Jorge Cuellar, Javier Lopez, Gilles Barthe, Alexander Pretschner (eds.)


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