Mathematics (Oct 2023)

On a Symmetric Image Cryptosystem Based on a Novel One-Dimensional Chaotic System and Banyan Network

  • Qingye Huang,
  • Linqing Huang,
  • Shuting Cai,
  • Xiaoming Xiong,
  • Hui Zhang

DOI
https://doi.org/10.3390/math11214411
Journal volume & issue
Vol. 11, no. 21
p. 4411

Abstract

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In this paper, a Banyan network with high parallelism and nonlinearity is used for the first time in image encryption to ensure high complexity and randomness in a cipher image. To begin, we propose a new 1-D chaotic system (1-DSCM) which improves the chaotic behavior and control parameters’ structure of the sin map. Then, based on 1-DSCM, a Banyan network, and SHA-256 hash function, a novel image encryption algorithm is conducted. Firstly, a parameter is calculated using SHA-256 hash function and then employed to preprocess the plaintext image to guarantee high plaintext sensitivity. Secondly, a row–column permutation operation is performed to gain the scrambled image. Finally, based on the characteristic of DNA encoding, a novel DNA mapping is constructed using an N=4 Banyan network and is used to diffuse the scrambled image. Simulation results show that the 1-DSCM has excellent performance in chaotic behavior and that our encryption algorithm exhibits strong robustness against various attacks and is suitable for use in modern cryptosystems.

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