Computer Science

Computer Science ›› 2020, Vol. 47 ›› Issue (10): 327-331.doi: 10.11896/jsjkx.190800003

• Information Security • Previous Articles     Next Articles

Image Encryption Algorithm Based on Cyclic Shift and Multiple Chaotic Maps

TIAN Jun-feng1,2, PENG Jing-jing1, ZUO Xian-yu1,2,3, GE Qiang1,2,3, FAN Ming-hu1,2   

  1. 1 College of Computer and Information Engineering,Henan University,Kaifeng,Henan 475004,China
    2 Key Laboratory of Big Data Analysis and Processing of Henan Province,Henan University,Kaifeng,Henan 475004,China
    3 Institute of Data and Knowledge Engineering,Henan University,Kaifeng,Henan 475004,China
  • Received:2019-08-01 Revised:2019-10-20 Online:2020-10-15 Published:2020-10-16
  • About author:TIAN Jun-feng,born in 1980,Ph.D,lecturer.His main research interests include digital image processing and image encryption.
    FAN Ming-hu,born in 1974,Ph.D,lecturer.His main research interests include remote sensing image and information space processing.
  • Supported by:
    National Key Research and Development Program of China (2017YFD0301105),National Natural Science Foundation of China(U1604145,U1704122) and Special Research and Development and Promotion Project of Henan Province (182102210242,182102110065,192102210096)

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Abstract: The encryption algorithm implemented by a single chaotic system has a simple structure and is easy to be attacked,using multiple chaotic systems to encrypt is an effective measure to improve the security of the encryption system.A new image encryption algorithm based on cyclic shift and multiple chaotic maps was proposed,and cyclic shift operation can change the va-lues of the pixels efficiently.First,using piece-wise linear chaotic map (PWLCM) and Logistic map to generate different chaotic sequences,generating index matrix and cyclic shift number according to the different chaotic sequences.Then,the plaintext image is replaced on the basis of index matrix.The left cyclic shift operation is performed on the replacement image in turn according to the cyclic shift number.Finally,the image after cyclic shift is scrambled and diffused by Logistic chaotic sequence and PWLCM chaotic sequence.Ultimately,an encrypted image is obtained.Tests and analyses of image histogram,information entropy,diffe-rential attack and correlation were carried out.Theoretical analysis and simulation results show that this algorithm has high secu-rity,a desirable ability to resist different kinds of attacks and can be used to implement an image encryption system.

Key words: Chaotic encryption, Cyclic shift, Image encryption, Index matrix, Multiple chaotic maps

CLC Number: 

  • TP391
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