Timed automata are a common formalism for the verification of concurrent systems subject to
timing constraints. They extend finite-state automata with clocks, that constrain the system …

Information leakage can have dramatic consequences on systems security. Among harmful
information leaks, the timing information leakage occurs whenever an attacker successfully …

In this paper we extend the notion of opacity, defined for discrete-event systems, to dense-
time systems. We define the timed opacity problem for timed automata and study its …

Opacity is an important property on information flow to guarantee that a system under attack
keeps its “secrets”, possibly subsets of traces (language-based opacity) or subsets of states …

Timing information leakage occurs whenever an attacker successfully deduces confidential
internal information by observing some timed information such as events with timestamps …

Information leakage can have dramatic consequences on the security of real-time systems.
Timing leaks occur when an attacker is able to infer private behavior depending on timing …

Abstract In 2009, Franck Cassez showed that the timed opacity problem, where an attacker
can observe some actions with their timestamps and attempts to deduce information, is …

We introduce a prototype tool strategFTO addressing the verification of a security property in
critical software. We consider a recent definition of timed opacity where an attacker aims to …

We focus on the control and the synthesis of secure timed systems which are modelled as
timed automata. The security property that the system must satisfy is a non-interference …

Initial-state opacity emerges as a key property in numerous security applications of discrete
event systems including key-stream generators for cryptographic protocols. Specifically, a …