CRYPTOGRAPHY BASED ON CHAOTIC SYSTEMS

In this letter, a new chaos-based secure communication scheme is propo sed in an attempt to thwart the attacks proposed recently, Instead of encoding the message signal in a chaotic system directly, we use two c haotic signals in our scheme, One of the chaotic signals is used to sy nchronize the chaotic encrypter and the chaotic decrypter. The other i s used to encrypt the plain signal by using a multishift cipher scheme , Thus the transmitted signal is not used to encrypt the message and a more complicated method of encryption is used.