ENCODING MESSAGES USING CHAOTIC SYNCHRONIZATION

We discuss a general approach for chaotic synchronization of dynamical systems that is based on an active-passive decomposition (APD) of giv en dynamical systems. Tt is shown how this approach can be used to con struct high-dimensional synchronizing systems in a systematic way usin g low-dimensional systems as building blocks. Furthermore, two methods for encoding messages are considered that are both based on synchroni zation. Using these methods the quality of the reconstructed informati on signal is higher acid the encoding is more secure compared to other encryption methods based on synchronization. The main ideas are illus trated using experimental and numerical examples based on continuous a nd discrete dynamical systems.