By Igor Izmailov, Boris Poizner, Ilia Romanov, Sergey Smolskiy
This e-book provides the right way to increase details defense for safe communique. It combines and applies interdisciplinary clinical engineering innovations, together with cryptography, chaos concept, nonlinear and singular optics, radio-electronics and self-changing man made platforms. It additionally introduces extra how you can enhance details defense utilizing optical vortices as info companies and self-controlled nonlinearity, with nonlinearity enjoying a key "evolving" position. The proposed strategies let the common phenomenon of deterministic chaos to be mentioned within the context of data safeguard difficulties at the foundation of examples of either digital and optical structures. extra, the e-book offers the vortex detector and conversation platforms and describes mathematical types of the chaos oscillator as a coder within the synchronous chaotic communique and applicable decoders, demonstrating their potency either analytically and experimentally. finally it discusses the cryptologic beneficial properties of analyzed platforms and indicates a chain of recent buildings for convinced communication.
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Additional info for Cryptology Transmitted Message Protection: From Deterministic Chaos up to Optical Vortices
Non-oscillating) systems, and about synchronous behavior of the generator and the passive system it is affecting. In the last case, tending to emphasize a speciﬁcity of physical processes, one can speak about the (chaotic) synchronous response , a well as about the passive (chaotic) synchronization , together with the expression “(chaotic) synchronization”. In view of practical importance of this case, we explain reasons of such a behavior through the prism of the decomposition of some self-oscillating system [41, 119].
In contrast to the widely used cubic polynomial, the function FðxÞ is suitable for modeling and experimental realization, as it is smooth and stays limited for any values of the argument xðtÞ: j FðxÞ j 1. 7), is used in the laboratory experiment in Fig. 18. The operation principle of the nonlinear element is the following. With small signal at the device input, both transistors are closed, and the gain is equal to unity. When the input signal increases, then, depending on its polarity, one transistor opens and the gain of the Fig.
The point is (it will be clearer from the further consideration) that those systems should function in the chaotic mode, and the values of their parameters play the role of keys. Now we are to consider in brief the basic generators capable of demonstrating chaotic types of oscillations. Kiyashko–Pikovskiy–Rabinovich generator (1978) represents an electronic system in which the tunnel diode is included in the tuned circuit (Fig. 4a), the volt-ampere characteristics of which have an N-type view (Fig.