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A simple 4D no-equilibrium chaotic system with only one quadratic term and its application in pseudo-random number generator

Author

Listed:
  • Xu, Wanjiang
  • Shi, Xuerong
  • Jiang, Haibo
  • Yu, Jianjiang
  • Zhang, Liping
  • Zhuang, Lizhou
  • Wang, Zuolei

Abstract

Simple-form chaotic systems with complex behaviors have always attracted the attention of researchers. This article introduces a novel 4D chaotic system that has only a quadratic nonlinear term as compared with the existing no-equilibrium continuous chaotic ones with two quadratic or higher nonlinearity. Despite the simplicity of its model, this new system exhibits complicated chaotic behaviors. Many interesting phenomena including the coexistence of different hidden attractors, offset boosting and antimonotonicity have been discovered by various numerical analysis such as bifurcation diagrams, Lyapunov exponent spectra, and phase portraits. The further circuit simulation of this new system verifies its feasibility and practicality. Moreover, the new system is applied to construct Pseudo-Random Number Generators (PRNG), following a thorough assessment of its complexity and randomness by sample entropy. The generated numbers are subsequently assessed using 15 statistical tests. The results confirm that the new system can produce unpredictable numbers with high randomness, making it ideal for information encryption.

Suggested Citation

  • Xu, Wanjiang & Shi, Xuerong & Jiang, Haibo & Yu, Jianjiang & Zhang, Liping & Zhuang, Lizhou & Wang, Zuolei, 2024. "A simple 4D no-equilibrium chaotic system with only one quadratic term and its application in pseudo-random number generator," Chaos, Solitons & Fractals, Elsevier, vol. 182(C).
    • Handle: RePEc:eee:chsofr:v:182:y:2024:i:c:s0960077924003047
    DOI: 10.1016/j.chaos.2024.114752
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