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Cryptanalyzing an improved security modulated chaotic encryption scheme using ciphertext absolute value

Author

Listed:
  • Álvarez, G.
  • Montoya, F.
  • Romera, M.
  • Pastor, G.

Abstract

This paper describes the security weakness of a recently proposed improved chaotic encryption method based on the modulation of a signal generated by a chaotic system with an appropriately chosen scalar signal. The aim of the improvement is to avoid the breaking of chaotic encryption schemes by means of the return map attack introduced by Pérez and Cerdeira. A method of attack based on taking the absolute value of the ciphertext is presented, that allows for the cancellation of the modulation scalar signal and the determination of some system parameters that play the role of system key. The proposed improved method is shown to be compromised without any knowledge of the chaotic system parameter values and even without knowing the transmitter structure.

Suggested Citation

  • Álvarez, G. & Montoya, F. & Romera, M. & Pastor, G., 2005. "Cryptanalyzing an improved security modulated chaotic encryption scheme using ciphertext absolute value," Chaos, Solitons & Fractals, Elsevier, vol. 23(5), pages 1749-1756.
    • Handle: RePEc:eee:chsofr:v:23:y:2005:i:5:p:1749-1756
    DOI: 10.1016/j.chaos.2004.07.006
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    Citations

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    Cited by:

    1. Li, Shujun & Álvarez, Gonzalo & Chen, Guanrong, 2005. "Breaking a chaos-based secure communication scheme designed by an improved modulation method," Chaos, Solitons & Fractals, Elsevier, vol. 25(1), pages 109-120.
    2. Yang, Jiyun & Liao, Xiaofeng & Yu, Wenwu & Wong, Kwok-wo & Wei, Jun, 2009. "Cryptanalysis of a cryptographic scheme based on delayed chaotic neural networks," Chaos, Solitons & Fractals, Elsevier, vol. 40(2), pages 821-825.
    3. Han, S. & Chang, E. & Dillon, T. & Hwang, M. & Lee, C., 2009. "Identifying attributes and insecurity of a public-channel key exchange protocol using chaos synchronization," Chaos, Solitons & Fractals, Elsevier, vol. 40(5), pages 2569-2575.
    4. Hoang, Thang Manh & Nakagawa, Masahiro, 2008. "A secure communication system using projective-lag and/or projective-anticipating synchronizations of coupled multidelay feedback systems," Chaos, Solitons & Fractals, Elsevier, vol. 38(5), pages 1423-1438.
    5. Gao, Haojiang & Zhang, Yisheng & Liang, Shuyun & Li, Dequn, 2006. "A new chaotic algorithm for image encryption," Chaos, Solitons & Fractals, Elsevier, vol. 29(2), pages 393-399.
    6. Zaher, Ashraf A., 2009. "An improved chaos-based secure communication technique using a novel encryption function with an embedded cipher key," Chaos, Solitons & Fractals, Elsevier, vol. 42(5), pages 2804-2814.

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