A Lightweight Integration of Theorem Proving and Model Checking for System Verification
APSEC '05 Proceedings of the 12th Asia-Pacific Software Engineering Conference
A Specification Translation from Behavioral Specifications to Rewrite Specifications
IEICE - Transactions on Information and Systems
The mondex challenge: machine checked proofs for an electronic purse
FM'06 Proceedings of the 14th international conference on Formal Methods
Simulation-based Verification for Invariant Properties in the OTS/CafeOBJ Method
Electronic Notes in Theoretical Computer Science (ENTCS)
Verification of Mondex Electronic Purses with KIV: From a Security Protocol to Verified Code
FM '08 Proceedings of the 15th international symposium on Formal Methods
Fostering proof scores in CafeOBJ
ICFEM'10 Proceedings of the 12th international conference on Formal engineering methods and software engineering
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Mondex is a payment system that utilizes smart cards as electronic purses for financial transactions. This paper first reports on how the Mondex system can be modeled, specified and interactively verified using an equation-based method - the OTS/CafeOBJ method. Afterwards, the paper reports on, as a complementarity, a way of automatically falsifying the OTS/CafeOBJ specification of the Mondex system, and how the falsification can be used to facilitate the verification. Differently from related work, our work provides alternative ways of (1) modeling the Mondex system using an OTS (Observational Transition System), a kind of transition system, and (2) expressing and verifying (and falsifying) the desired security properties of the Mondex system directly in terms of invariants of the OTS.