A process calculus approach to correctness enforcement of PLCs (full version) [article]

Ruggero Lanotte and Massimo Merro and Andrei Munteanu
2020 arXiv   pre-print
We define a simple process calculus, based on Hennessy and Regan's Timed Process Language, for specifying networks of communicating programmable logic controllers (PLCs) enriched with monitors enforcing specifications compliance. We define a synthesis algorithm that given an uncorrupted PLC returns a monitor that enforces the correctness of the PLC, even when injected with malware that may forge/drop actuator commands and inter-controller communications. Then, we strengthen the capabilities of
more » ... ur monitors by allowing the insertion of actions to mitigate malware activities. This gives us deadlock-freedom monitoring: malware may not drag monitored controllers into deadlock states.
arXiv:2007.09399v2 fatcat:cbqlxkngfnbn7oq6n32ojxagoe