Authors: Arti Dwivedi; Ashok Kumar Mittal; Suneet Dwivedi
Addresses: Department of Physics, University of Allahabad, Allahabad-211002, India ' Department of Physics, University of Allahabad, Allahabad-211002, India ' K. Banerjee Centre of Atmospheric and Ocean Studies, University of Allahabad, Allahabad-211002, India
Abstract: A chaos shift keying (CSK) scheme for secure communication of binary messages is proposed, in which two identical hyper-chaotic systems are synchronised in a time less than the time scale of their chaotic oscillations using complete replacement, feedback control and parameter adaptation. It is shown that this scheme is more secure compared to other similar schemes because coding parameter of the transmitting system changes so rapidly that an intruder cannot infer any information about the attractors corresponding to the two coding parameters. An extended scheme of secure communication based on arbitrary chaotic systems is also presented. This gives the sender a handle for making changes at the transmitting end without having to convey this information to the receiver, thereby significantly enhancing the security. Salient features of standard cryptology are presented and the cryptological aspects of the proposed chaotic communication scheme are analysed.
Keywords: synchronisation; hyper-chaotic systems; parameter adaptation; chaos-shift keying; CSK; secure communication; parameter adaptation; chaotic communication; chaos; communication security; coding; cryptology.
International Journal of Trust Management in Computing and Communications, 2015 Vol.3 No.2, pp.115 - 146
Received: 10 Jan 2015
Accepted: 07 Jul 2015
Published online: 04 Jun 2016 *