A method of the secrecy communication using fuzzy and chaos

Yoshimasa Shimizu*, Michio Miyazaki, Fei Qian, Hee Hyol Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The chaos synchronization system used for secrecy communication is considered. The compound system which consists of subsystems is chaos-synchronized. In order to increase the secrecy of models of subsystem, state of synchronization section in each subsystem is constituted by fuzzy model. Subsystems with the same chaotic dynamics are asynchronous at first. The considered non-linear feedback control is applied to the chaos synchronization control. The control input for the chaos synchronization can be made small by use of the Unstable Periodic Regions based on the chaotic characteristic of the subsystems, then. It is important that the mathematical model of the chaos system used in synchronization sections or the encryption section is not known by the third person. However, the mathematical model of the chaos known well is used for them. Using the state of the chaos synchronization section, bifurcation parameter is changed and chaos modulations are performed. And the chaos state of the encryption section is used for encryption of information signals. The chaos dynamics of the encryption section is generated using Chaos Neuron dynamics of Chaos Neural Network.

Original languageEnglish
Pages (from-to)97-108
Number of pages12
JournalInternational Journal of Innovative Computing, Information and Control
Issue number1
Publication statusPublished - 2009 Jan


  • Chaos synchronization
  • Fuzzy model
  • Secrecy communication

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Information Systems
  • Computational Theory and Mathematics


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