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2006 Fiscal Year Final Research Report Summary

Research on Cryptanalysis of Chaotic Secure Communication Systems

Research Project

Project/Area Number 16560390
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Control engineering
Research InstitutionOita University

Principal Investigator

MATSUO Takami  Oita University, Dept. of Human Welfare Engineering, Professor, 工学部, 教授 (90181700)

Co-Investigator(Kenkyū-buntansha) HOSHINO Osamu  Ibaraki University, Dept. of Department of IntelligentSystems Engineering, Professor, 工学部, 教授 (00303016)
SUEMITSU Haruo  Oita University, Dept. of Human Welfare Engineering, Research Associate, 工学部, 助手 (50162839)
Project Period (FY) 2004 – 2006
KeywordsRobust control / Time delay / Parameter estimation / Cryptaialysis / Error function attack / Encrypter / Decrypter / Chosen cipher attack
Research Abstract

In this research project, we designed an observer-based chaotic communication system combining the cryptosystems proposed by Grassi et al. and by Liao et al. that allows us to assign the relative degree and the zeros of its encrypter system. The cryptosystem consists of an encryption function (the multi-shift cipher), a decryption function (the inverse of the encryption function), a chaotic encrypter that generates the key signal for the encryption function, and a decrypter that estimates the key signal. The proposed cryptosystem allows us to assign the relative degree and the zeros of the encrypter dynamics by selecting an output vector that generates a transmitted signal as partial states of the encrypter. Next, we proposes an H-infinity synchronizer in order to improve the robustness of chaotic communication systems with respect to delays in the transmission line. We need to design the free parameter such that both the requirements are satisfied. Since we cannot get this solution, we designed the dynamical compensator so as to satisfy the robustness requirement, and then check the security level by using the error function attack (EFA). Furthermore, we proposed a statistical testing for the security analysis of a secure communication scheme based on continuous-time chaotic systems. In particuler, we proposed a statistical testing for cryptanalysis, which calculated a kurtosis and a skewness of the EFA function obtained by random trial keys. Finally, simulation results for the proposed security test was presented.

  • Research Products

    (11 results)

All 2006 2005 2004

All Journal Article (11 results)

  • [Journal Article] Robustness and Security Testing of H∞-Synchronizer in Chaotic Communication Systems2006

    • Author(s)
      Yoshinori Toshimitsu, Takahiko Irie, Haruo Suemitsu, Takami Matsuo
    • Journal Title

      Proc. of SICE-ICASE International Joint Conference 2006

      Pages: 3185-3190

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Security Validation of Continuous-Time Chaotic Communication Systems by Error Function Attack2006

    • Author(s)
      Takahiko Irie, Ikuto Kugimiya, Haruo Suemitsu, Takami Matsuo
    • Journal Title

      Proc. of SICE-ICASE International Joint Conference 2006

      Pages: 1744-1749

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Robustness and Security Testing of Hーー-Synchronizer in Chaotic Communication Systems2006

    • Author(s)
      Yoshinori Toshimitsu, Takahiko Irie, Haruo Suemitsu anc Takami Matsuo
    • Journal Title

      Proc. of SICE-ICASE International Joint Conference 2006

      Pages: 3185-3190

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Robustness and Security Improvement of H∞-Synchronizer in Secure Communication Systems2005

    • Author(s)
      Yoshinori Toshimitsu, Haruo Suemitsu, Takami Matsuo
    • Journal Title

      Proc. of International Symposium on Advanced Control of Industrial Processes

      Pages: 282-287

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Time-Derivative Estimation of Noisy Movie Data Using Adaptive Control Theory2005

    • Author(s)
      Soon-Hyun Park, Takami Matsuo
    • Journal Title

      International Journal of Signal Processing 2-3

      Pages: 170-177

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Robustness and Security Improvement of H∞-Synchronize. in Secure Communication Systems2005

    • Author(s)
      Yoshinori Toshimitsu, Haruo Suemitsu, Takami Matsuo
    • Journal Title

      Proc. of International Symposium on Advanced Control of Industrial Processes

      Pages: 282-287

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Cognitive Enhancement Mediated Through Postsynaptic Actions of Norepinephrine on Ongoing Cortical Activity2005

    • Author(s)
      Osamu Hoshino
    • Journal Title

      Neural Computation 17

      Pages: 1739-1775

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Time-Derivative Estimation of Noisy Movie Data Usinf Adaptive Control Theory2005

    • Author(s)
      Soon-Hyun Park, Takami Matsuo
    • Journal Title

      International Journal of Signal Processing 2-3

      Pages: 170-177

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Zeros and Relative Degree Assignments of Adaptive Chaotic Communication Systems2004

    • Author(s)
      Takami Matsuo, Haruo Suemitsu, Kazushi Nakano
    • Journal Title

      International Journal of Bifurcation and Chaos 14-12

      Pages: 4233-4247

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Neuron Bases of Perceptual Learning Revealed by Synaptic Balance Scheme2004

    • Author(s)
      Osamu Hoshino
    • Journal Title

      Neural Computation 16

      Pages: 563-594

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Roles of Coherent Ongoing Oscillations among Dynamic Cells Asemblies in Object Perception2004

    • Author(s)
      Osamu Hoshino
    • Journal Title

      Network : Comput.Neural Syst 15

      Pages: 111-132

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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