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EnglishAn extension of the $\lambda$-calculus is proposed, to study history-based access control. It allows for security policies with a possibly nested, local scope. We define a type and effect system that, given a program, extracts a history expression, i.e.\ a correct approximation to the set of histories obtainable at run-time. Validity of history expressions is non-regular, because the scope of policies can be nested. Nevertheless, a transformation of history expressions is presented, that makes verification possible through standard model checking techniques. A program will never fail at run-time if its history expression, extracted at compile-time, is valid.
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| Titolo: | History-based Access Control with Local Policies |
| Autori: | |
| Data di pubblicazione: | 2005 |
| Abstract: | An extension of the $\lambda$-calculus is proposed, to study history-based access control. It allows for security policies with a possibly nested, local scope. We define a type and effect system that, given a program, extracts a history expression, i.e.\ a correct approximation to the set of histories obtainable at run-time. Validity of history expressions is non-regular, because the scope of policies can be nested. Nevertheless, a transformation of history expressions is presented, that makes verification possible through standard model checking techniques. A program will never fail at run-time if its history expression, extracted at compile-time, is valid. |
| Handle: | http://hdl.handle.net/11584/23892 |
| ISBN: | 3-540-25388-2 |
| Tipologia: | 4.1 Contributo in Atti di convegno |
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