SECURE COMMUNICATION USING A COMPOUND SIGNAL FROM GENERALIZED SYNCHRONIZABLE CHAOTIC SYSTEMS

By considering generalized synchronizable chaotic systems, the drive-a uxiliary system variables are combined suitably using encryption key f unctions to obtain a compound chaotic signal. An appropriate feedback loop is constructed in the response-auxiliary system to achieve synchr onization among the variables of the drive-auxiliary and response-auxi liary systems. We apply this approach to transmit analog and digital i nformation signals in which the quality of the recovered signal is hig her and the encoding is more secure. (C) 1998 Published by Elsevier Sc ience B.V.