Optical Chaos Based Cryptography

Silvano Donati, ANNOVAZZI-LODI Valerio ANNOVAZZI-LODI Valerio, 王昭 Wang Zhao

Stamatios V. Kartalopoulos

The number of security breaches and network attacks increases as well as the sophistication of intruders and bad actors. To increase information integrity and network security, very complex processes are enlisted in cryptographic systems, such as chaos theory and quantum theory. Chaos is based on the particular behavior of certain non-linear functions, which for a minute change of parameters produce a very large and unstable output, known as the chaotic regime. However, this chaos is reproducible, which makes it attractive to secure communications. Quantum theory defines the non-classical qubit, which is a superposition of quantum states. In addition, it defines the no cloning or no copying (of qubit) theorem. Both, the qubit and the no-cloning theorem, along with the quanto-mechanical properties of photons, find applicability to a new breed of cryptography and secure optical communications known as quantum cryptography and quantum networks, respectively. In this talk we explain chaos and chaotic processes with simple examples, as well as quantum cryptography. We then describe how chaos functions are used in quantum cryptography to increase efficiency and speed of the quantum key establishment.

Osamu Hirota

Panagiotis Rizomiliotis, Adonis Bogris, Dimitris Syvridis

The construction of quantum computers forms the major threat against the security of modern communication systems, as anyone who can build a large quantum computer can break today's most popular cryptosystems. Given the central role of information security in the deployment of modern systems, the preparation of the cryptographic world for a future of quantum computers is imperative. In this context, several alternatives have been proposed, mainly basing their security on the laws of physics. One of the most promising technologies is the optically generated chaos-based cryptography. One of its main advantages is that it can be combined with the technology of optical communication networks in a natural way. In this paper, we propose a message authentication and integrity protection scheme based on optically generated chaos. The new scheme is coming to complete a recently introduced solution, for data confidentiality based on optical chaos.

Stamatios V. Kartalopoulos

As the sophistication of intruders' increases, so does the incidents of information integrity breaches and network attacks. In response, very complex cryptographic processes have started being employed, such as chaos theory and quantum theory, in an effort to create the “holy grail” of cryptographic systems and network security. Quantum theory defines the non-classical qubit, which is the superposition of quantum states having no classical analog. It is also based on the “no cloning” and “no copying” theorem and on the Heisenberg's uncertainty. The quanto-mechanical properties of photons and the quantum mechanics provide a superb platform for communications security and particularly in secure optical communication networks, known as quantum cryptography and quantum networks, respectively. Chaos is based on the particular behavior of certain non-linear functions, which for a minute change of parameters produce a huge and unstable output, known as the “chaotic regime”. However, this chaos can be reproducible, which makes it attractive to secure communications. Thus, the combined Chaos and Quantum theories play a synergistic role in the quest for the “holy grail” in communications security. In this talk we explain with simple examples quantum cryptography and protocols, as well as chaos and chaotic processes. We also describe the synergy of chaos and quantum theories as well as the increased efficiency and speed of the quantum key establishment.

Goutam Kumar Maity, Tarak Nath Bera, Aranya Manna +2 more