Journal of Jishou University(Natural Sciences Edition) ›› 2021, Vol. 42 ›› Issue (6): 4-14.DOI: 10.13438/j.cnki.jdzk.2021.06.002

• Computer • Previous Articles     Next Articles

Image Encryption Algorithm Based on 5D Hyperchaotic System

WU Chaoyang, ZHOU Ying   

  1. (Fujian Polytechnic Normal University, Fuqing 350300, Fujian China)
  • Online:2021-11-25 Published:2022-01-21

Abstract: A novel image encryption method is put forward based on 5D hyperchaotic system. At first, initial values of 5D hyperchaotic system are calculated based on secret keys and chaotic sequences are generated. Then chaotic sequences are preprocessed to get new chaotic sequences. Two-dimensional permutation  is executed to plain image based on column and row sorting. The cycle shift is also employed to improve the security of the scheme. Diffusing operation is performed at last and encrypted image is obtained. Experimental results and theoretical analysis prove that the method possesses a large key space and could resist kinds of attacks.

Key words: 5D hyperchaotic map,  , chaotic sequences, image encryption, cycle shift, two-dimensional permutation

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