Electronic Science and Technology ›› 2019, Vol. 32 ›› Issue (4): 39-43.doi: 10.16180/j.cnki.issn1007-7820.2019.04.009

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New Image Encryption Algorithm Based on DNA and Cellular Automata

WANG Hongda   

  1. School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China
  • Received:2018-03-18 Online:2019-04-15 Published:2019-03-27
  • Supported by:
    Shanghai River Fund(C14002)


In order to solve the problem of insufficient key space and poor robustness of existing image encryption algorithms, a new image encryption algorithm was designed based on traditional chaotic encryption. The algorithm employed the SHA256 function to calculate the plaintext to further obtain the initial value and key of the system while the scrambling process was eliminated. Image encryption was carried out by the cross-diffusion of the plaintext and cellular automata. The calculation and analysis of related secure indicators showed that the key space reached more than 2 320, and it could resist 30% shear attack and various noise attack, indicating that the algorithm displayed a good security and robustness.

Key words: chaotic system, image encryption, SHA256 function, DNA coding, cellular automata, robustness

CLC Number: 

  • TP309.7