Execution-time opacity control for timed automata
<|reference_start|>Execution-time opacity control for timed automata: Timing leaks in timed automata (TA) can occur whenever an attacker is able to deduce a secret by observing some timed behavior. In execution-time opacity, the attacker aims at deducing whether a private location was visited, by observing only the execution time. It can be decided whether a TA is opaque in this setting. In this work, we tackle control, and show that we are able to decide whether a TA can be controlled at runtime to ensure opacity. Our method is constructive, in the sense that we can exhibit such a controller. We also address the case when the attacker cannot have an infinite precision in its observations.<|reference_end|>
@article{andré2024execution-time,
    title={Execution-time opacity control for timed automata},
    author={'Etienne Andr'e, Marie Duflot, Laetitia Laversa and Engel Lefaucheux},
    journal={arXiv preprint arXiv:2409.10336},
    year={2024},
    archivePrefix={arXiv},
    eprint={2409.10336},
    primaryClass={cs.CR}
}