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Real-time cryptosystem based on synchronized chaotic systems

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Abstract

This paper presents an efficient approach to synchronizing two identical chaotic systems in order to achieve a cryptosystem, and this approach is intended specifically to digital communications. Instead of sending a drive signal accompanied with encrypted message to the receiver, we send only one signal which results a continuous perturbation to the chaotic system. The large computation precision used for implementation and the way by which the system key is chosen reveal high randomness of the proposed chaotic cryptosystem (PCCS) and avoid short cycles and non-chaotic regions. The mechanism used for encryption shows the reliability and efficiency of the PCCS in terms of security, and this can be proven by the failing of cryptanalysis that carried out on the PCCS and the good results of statistical tests. The real-time FPGA hardware implementation results show the efficiency of the PCCS in terms of throughput and hardware resources consumption.

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Authors and Affiliations

  1. Department of Electronics, University of Science and Technology of Oran (USTO), BP 1505, El MNaouer, 31036, Oran, Algeria

    Lahcene Merah, Adda Ali-Pacha & Naima Hadj-Said

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  1. Lahcene Merah
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  2. Adda Ali-Pacha
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  3. Naima Hadj-Said
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Correspondence to Lahcene Merah.

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Merah, L., Ali-Pacha, A. & Hadj-Said, N. Real-time cryptosystem based on synchronized chaotic systems. Nonlinear Dyn 82, 877–890 (2015). https://doi.org/10.1007/s11071-015-2202-2

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  • DOI: https://doi.org/10.1007/s11071-015-2202-2

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