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Published in:
2014 | OriginalPaper | Chapter
A Formal Model for Soft Enforcement: Influencing the Decision-Maker
Authors : Charles Morisset, Iryna Yevseyeva, Thomas Groß, Aad van Moorsel
Published in: Security and Trust Management
Publisher: Springer International Publishing
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We propose in this paper a formal model for
soft enforcement
, where a decision-maker is
influenced
towards a decision, rather than forced to select that decision. This novel type of enforcement is particularly useful when the policy enforcer cannot fully control the environment of the decision-maker, as we illustrate in the context of attribute-based access control, by limiting the control over attributes. We also show that soft enforcement can improve the security of the system when the influencer is uncertain about the environment, and when neither forcing the decision-maker nor leaving them make their own selection is optimal. We define the general notion of optimal influencing policy, that takes into account both the control of the influencer and the uncertainty in the system.