Titlebook: Algebraic Methodology and Software Technology; 12th International C José Meseguer,Grigore Roşu Conference proceedings 2008 Springer-Verlag

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A Formal Analysis of Complex Type Flaw Attacks on Security Protocols,sion of the calculus. The analysis over-approximates all the possible behaviour of a protocol, including those effected by these type confusions. As an example, we considered the amended Needham-Schroeder symmetric protocol, where we succeed in detecting the type confusion that lead to a complex typ

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Abstract Interpretation Plugins for Type Systems,nformation transferal and use of the information provided by the abstract analyses. The key gain from this method is a clear separation between the correctness of the analyses and the type system, both in the implementation and correctness proof, which leads to a comparatively easy way of changing t

Leaven

An Algebraic Semantics for Contract-Based Software Components,model-theoretic semantics of interfaces and component bodies suggests two semantic views on a component, its external and its internal semantics which must be properly related to ensure the correctness of a component. We also study a refinement relation between required and provided interface specif

Harpoon

Constant Complements, Reversibility and Universal View Updates,l updates which are reversible even for views which have no complement. In short, the universal updates provide an attractive option including reversibility, even when constant complements are not available. The paper is predominantly theoretical studying different algebraic approaches to informatio

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0302-9743 nguages and systems, coinduction, theorem proving and logical frameworks for reasoning, logics of programs, as well as algebra and coalgebra.978-3-540-79979-5978-3-540-79980-1Series ISSN 0302-9743 Series E-ISSN 1611-3349

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Calculating Invariants as Coreflexive Bisimulations,ds to an elegant proof of the equivalence between two different definitions of bisimulation found in coalgebra literature (due to B. Jacobs and Aczel & Mendler, respectively) and to their instantiation to the classical Park-Milner definition popular in process algebra.

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