Nonlinear-dynamic systems of confidential communication: classification, simulation, experiment
A classification and a number of new confidential communication systems are introduced on the basis of chaos (or noise) generators. Heuristic nature of the classification lets to perform meaningful development of nonlinear-dynamic cryptosystems. Mathematical model and its features are considered, as well as ex-perimental implementation of deterministic chaos generator for a variant of such cryptosystem. It’s based on a radioelectronic circuit, which contains a nonlinear element, a photodiode, and a length of fi-ber-optics line, which is responsible for time lag in the feedback loop.