Details

Autor(en) / Beteiligte

• Boukerrou, Hamid
• Millérioux, Gilles
• Minier, Marine
• Boukhobza, Taha

Titel

Flatness and structural analysis for the design of stream ciphers involving hybrid automata

Ist Teil von

• Nonlinear analysis. Hybrid systems, 2024-05, Vol.52, p.101443, Article 101443

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This paper deals with hybrid dynamical systems in the context of cybersecurity and Cyber–Physical Systems. It is shown how the design of a cipher, called self-synchronizing stream cipher, can be recast as control-theoretic issues, in particular left inversion, flatness and structural analysis. From an automatic control point of view, the main contribution lies in a methodology to construct generic flat LPV systems. Beyond pure control theoretic matters, the design also addresses computational complexity and security concerns. Those considerations motivate a hybrid architecture involving switched automata. A Proof-Of-Concept example illustrates the design of a statistical self-synchronizing stream cipher and the way how it operates to encrypt data flows.