• Article  

      Current-state opacity formulations in probabilistic finite automata 

      Saboori, A.; Hadjicostis, Christoforos N. (2014)
      A system is said to be current-state opaque if the entrance of the system state to a set of secret states remains opaque (uncertain) to an intruder - at least until the system leaves the set of secret states. This notion ...
    • Conference Object  

      Opacity verification in stochastic discrete event systems 

      Saboori, A.; Hadjicostis, Christoforos N. (2010)
      Motivated by security and privacy considerations in applications of discrete event systems, various notions of opacity have been introduced. Specifically, a system is said to be current-state opaque if the entrance of the ...
    • Article  

      Verification of infinite-step opacity and complexity considerations 

      Saboori, A.; Hadjicostis, Christoforos N. (2012)
      We describe and analyze the complexity of verifying the notion of infinite-step opacity in systems that are modeled as non-deterministic finite automata with partial observation on their transitions. Specifically, a system ...