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The European Physical Journal Special Topics

, Volume 223, Issue 8, pp 1549–1560 | Cite as

Parameter adaptation technique for rapid synchronization and secure communication

  • A.K. Mittal
  • A. Dwivedi
  • S. DwivediEmail author
Regular Article Synchronization of Systems and Networks for Communication
Part of the following topical collections:
  1. Chaos, Cryptography and Communications

Abstract

An effort is made here to show how parameter adaptation can be used for achieving rapid synchronization between two chaotic systems in a time much smaller than the time scale of chaotic oscillations. This rapid synchronization can be used for faster and more secure communication of digital messages. Different symbols of the message are coded by assigning different values to a parameter set. At the receiving end the parameter values quickly adapt to the changing transmitter parameters, thereby permitting the messages to be decoded. The technique presented here is significantly more secure compared to other similar schemes because in our scheme the transmitting parameters change so rapidly that an intruder cannot infer any information about the attractors corresponding to the different parameter values. Another feature, which enhances security, is that a subsystem of the transmitter can be changed, without having to convey this information to the bona fide recipient. Thus for the same plaintext and the same key, several different cipher-texts can be generated. Further, the variables, whose evolution equations contain the coding parameters, are not transmitted.

Keywords

Chaotic System European Physical Journal Special Topic Switching Time Secure Communication Parameter Adaptation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences and Springer 2014

Authors and Affiliations

  1. 1.Physics Department, University of AllahabadAllahabadIndia
  2. 2.K Banerjee Centre of Atmospheric and Ocean Studies, University of AllahabadAllahabadUPIndia

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