Hrvatska znanstvena bibliografija (CROSBI)



Pregled bibliografske jedinice broj: 778202

Zbornik radova

Autori: Kanovich, Max; Ban Kirigin, Tajana; Nigam, Vivek; Scedrov, Andre; Talcott, Carolyn
Naslov: Discrete vs. Dense Times in the Analysis of Cyber- Physical Security Protocols
( Discrete vs. Dense Times in the Analysis of Cyber- Physical Security Protocols )
Izvornik: Book of Abstracts
Skup: Logic and Applications 2015
Mjesto i datum: Dubrovnik, Hrvatska, 21-25.09.2015.
Ključne riječi: Cyber-Physical Security Protocols ; Multiset Rewriting ; Computational Complexity
( Cyber-Physical Security Protocols ; Multiset Rewriting ; Computational Complexity )
Sažetak:
Many security protocols rely on the assumptions on the physical properties in which its protocol sessions will be carried out. For instance, Distance Bounding Protocols take into account the round trip time of messages and the transmission velocity to infer an upper bound of the distance between two agents. We classify such security protocols as Cyber-Physical. Time plays a key role in design and analysis of many of these protocols. This paper investigates the foundational differences and the impacts on the analysis when using models with discrete time and models with dense time. We show that there are attacks that can be found by models using dense time, but not when using discrete time. We illustrate this with a novel attack that can be carried out on most distance bounding protocols. In this attack, one exploits the execution delay of instructions during one clock cycle to convince a verifier that he is in a location different from his actual position. We propose a Multiset Rewriting model with dense time suitable for specifying cyber- physical security protocols. We introduce Circle-Configurations and show that they can be used to symbolically solve the reachability problem for our model. Finally, we show that for the important class of balanced theories the reachability problem is PSPACE-complete.
Vrsta sudjelovanja: Predavanje
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Međunarodna recenzija
Izvorni jezik: eng
Kategorija: Ostalo
Znanstvena područja:
Matematika,Računarstvo
Puni text rada: 778202.LAP_abstract_Scedrov.pdf (tekst priložen 27. Ruj. 2015. u 12:08 sati)
URL Internet adrese: http://imft.ftn.uns.ac.rs/math/cms/LAP2015
Upisao u CROSBI: Tajana Ban Kirigin (bank@math.uniri.hr), 27. Ruj. 2015. u 12:08 sati