Higher-Order Fixpoint Logic (HFL) is a hybrid of the simply typed λ-calculus and the modal µ-calculus. This makes it a highly expressive temporal logic that is capable of express...
We present HOMER, an observational-equivalence model checker for the 3rd-order fragment of Idealized Algol (IA) augmented with iteration. It works by first translating terms of the...
We consider the distributed implementability problem as: Given a labeled transition system TS together with a distribution ∆ of its actions over a set of processes, does there ex...
The role-based access control (RBAC) has significantly simplified the management of users and permissions in computing systems. In dynamic environments, systems are usually unde...
: Designing security-critical systems correctly is very difficult. We present work on software engineering of security critical systems, supported by the CASE tool AUTOFOCUS. Secur...