An optimal Chaotic Bidirectional Communicator for Hidden Information, based on Synchronized Lorenz Circuits

Abstract

An Optimal Chaotic Bidirectional Communicator for Hidden Information (OCBCHI) is presented. Its realization is based on a Standard Chaotic Bidirectional Communicator for Hidden Information (SCBCHI), that uses two Lorenz synchronized circuits with an open-loop explicit method. All the chaotic dynamics of the circuits were studied and analysed using DSP techniques. Regarding to our real-time application, -on bidirectional audio communications field-, the optimum conclusion was to make the synchronization and the hidden communication of the private information by the lower chaotic dynamic variable and the most higher chaotic dynamics variables, respectively. By the complete characterization of the bidirectional channels, we got the minimum parameters (i.e., time and spectrum magnitude) of the private information that it must have just to make a confidential and robust communication.