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A stream cipher based on a spatiotemporal chaotic system

Author

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  • Li, Ping
  • Li, Zhong
  • Halang, Wolfgang A.
  • Chen, Guanrong

Abstract

A stream cipher based on a spatiotemporal chaotic system is proposed. A one-way coupled map lattice consisting of logistic maps is served as the spatiotemporal chaotic system. Multiple keystreams are generated from the coupled map lattice by using simple algebraic computations, and then are used to encrypt plaintext via bitwise XOR. These make the cipher rather simple and efficient. Numerical investigation shows that the cryptographic properties of the generated keystream are satisfactory. The cipher seems to have higher security, higher efficiency and lower computation expense than the stream cipher based on a spatiotemporal chaotic system proposed recently.

Suggested Citation

  • Li, Ping & Li, Zhong & Halang, Wolfgang A. & Chen, Guanrong, 2007. "A stream cipher based on a spatiotemporal chaotic system," Chaos, Solitons & Fractals, Elsevier, vol. 32(5), pages 1867-1876.
    • Handle: RePEc:eee:chsofr:v:32:y:2007:i:5:p:1867-1876
    DOI: 10.1016/j.chaos.2005.12.021
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    References listed on IDEAS

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    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.
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    Cited by:

    1. Rhouma, Rhouma & Belghith, Safya, 2009. "Cryptanalysis of a spatiotemporal chaotic cryptosystem," Chaos, Solitons & Fractals, Elsevier, vol. 41(4), pages 1718-1722.
    2. Kanso, Ali & Smaoui, Nejib, 2009. "Logistic chaotic maps for binary numbers generations," Chaos, Solitons & Fractals, Elsevier, vol. 40(5), pages 2557-2568.
    3. Sun, Fuyan & Liu, Shutang & Li, Zhongqin & Lü, Zongwang, 2008. "A novel image encryption scheme based on spatial chaos map," Chaos, Solitons & Fractals, Elsevier, vol. 38(3), pages 631-640.
    4. Lian, Shiguo, 2009. "Efficient image or video encryption based on spatiotemporal chaos system," Chaos, Solitons & Fractals, Elsevier, vol. 40(5), pages 2509-2519.

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