Download Computer Security – ESORICS 2007: 12th European Symposium On by Michael K. Reiter (auth.), Joachim Biskup, Javier López PDF

By Michael K. Reiter (auth.), Joachim Biskup, Javier López (eds.)

This booklet constitutes the refereed court cases of the twelfth eu Symposium on learn in laptop protection, ESORICS 2007, held in Dresden, Germany in September 2007.

The 39 revised complete papers provided have been rigorously reviewed and chosen from 164 submissions. ESORICS is proven because the ecu learn occasion in machine safety; it offers unique learn contributions, case reports and implementation reviews addressing any element of computing device defense - in conception, mechanisms, functions, or sensible experience.

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Extra resources for Computer Security – ESORICS 2007: 12th European Symposium On Research In Computer Security, Dresden, Germany, September 24 — 26, 2007. Proceedings

Example text

1). , the logics of SD3 [17], Cassandra [7], and Binder [11], but is not sufficient to express higher-order logic, and, as such, we cannot fully express the access-control logic presented by Appel and Felten [2]. The general notion of delegation introduced in Definition 1 is conceptually very similar to that of the various logics that encode SPKI [1,19,16], the RT family of logics [20], Binder [11], Placeless Documents [3], and the domain-name service logic of SD3 [17], and so our technique should apply to these logics as well.

The proveWithChoiceSubgoal acts like a standard prove predicate, but restricts the search to discard any proofs that do not involve a choice subgoal. We employ rudimentary cycle detection to prevent repeated application of the same right rule. Optimizations to LR. The dominant computational cost of running a query using LR tactics is repeated applications of right tactics. Since a right tactic handles the case in which the choice subgoal represents a delegation, identifying the choice subgoal involves determining who is allowed to create delegations, and then determining on whose behalf that person wishes to delegate.

A proof) of the element from credentials. Our implementation searches the knowledge base for any elements that are derived from expired or revoked credentials and removes them. Our technique is agnostic to the underlying revocation mechanism. Systematic tactic generation. Another set of difficulties in constructing proofs is related to constructing the tactics that guide a backward-chaining prover in how it decomposes a goal into subgoals. One approach to constructing tactics is simply to use the inference rules of the logic as tactics.

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