Over the last decade, opacity of discrete event systems (DES) has become a very fertile field
of research. Driven by safety and privacy concerns in network communications and online …

Correct-by-construction synthesis is a cornerstone of the confluence of formal methods and
control theory towards designing safety-critical systems. Instead of following the time-tested …

A system is said to be opaque if a given secret behavior remains opaque (uncertain) to an
intruder who can partially observe system activities. This work addresses the verification of …

The problem under consideration in this paper is that of enforcement by supervisory control
of a given property on a partially-observed discrete-event system. We present a general …

Adversary models have been fundamental to the various cryptographic protocols and
methods. However, their use in most of the branches of research in computer science is …

In the context of security analysis for information flow properties, where a potentially
malicious observer (intruder) tracks the observed behavior of a given system, infinite-step …

Abstract System resilience captures the ability of the system to withstand a major disruption
within acceptable performance degradation and to recover within an acceptable time frame …

Opacity is a confidentiality property that characterizes whether a “secret” of a system can be
inferred by an outside observer called an “intruder”. In this paper, we consider the problem …

In this paper, we study the verification and enforcement problems of strong infinite-step
opacity and k-step opacity for partially observed discrete-event systems modeled by finite …

In this paper we tackle the opacity enforcement problem in discrete event systems using
supervisory control theory. In particular, we consider the case where the intruder and the …