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A Simple Image Encryption Based on Binary Image Affine Transformation and Zigzag Process

Author

Listed:
  • Adélaïde Nicole Kengnou Telem
  • Cyrille Feudjio
  • Balamurali Ramakrishnan
  • Hilaire Bertrand Fotsin
  • Karthikeyan Rajagopal

Abstract

In this paper, we propose a new and simple method for image encryption. It uses an external secret key of 128 bits long and an internal secret key. The novelties of the proposed encryption process are the methods used to extract an internal key to apply the zigzag process, affine transformation, and substitution‐diffusion process. Initially, an original gray‐scale image is converted into binary images. An internal secret key is extracted from binary images. The two keys are combined to compute the substitution‐diffusion keys. The zigzag process is firstly applied on each binary image. Using an external key, every zigzag binary image is reflected or rotated and a new gray‐scale image is reconstructed. The new image is divided into many nonoverlapping subblocks, and each subblock uses its own key to take out a substitution‐diffusion process. We tested our algorithms on many biomedical and nonmedical images. It is seen from evaluation metrics that the proposed image encryption scheme provides good statistical and diffusion properties and can resist many kinds of attacks. It is an efficient and secure scheme for real‐time encryption and transmission of biomedical images in telemedicine.

Suggested Citation

  • Adélaïde Nicole Kengnou Telem & Cyrille Feudjio & Balamurali Ramakrishnan & Hilaire Bertrand Fotsin & Karthikeyan Rajagopal, 2022. "A Simple Image Encryption Based on Binary Image Affine Transformation and Zigzag Process," Complexity, John Wiley & Sons, vol. 2022(1).
  • Handle: RePEc:wly:complx:v:2022:y:2022:i:1:n:3865820
    DOI: 10.1155/2022/3865820
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    References listed on IDEAS

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    1. Mazloom, Sahar & Eftekhari-Moghadam, Amir Masud, 2009. "Color image encryption based on Coupled Nonlinear Chaotic Map," Chaos, Solitons & Fractals, Elsevier, vol. 42(3), pages 1745-1754.
    2. Lian, Shiguo & Sun, Jinsheng & Wang, Zhiquan, 2005. "A block cipher based on a suitable use of the chaotic standard map," Chaos, Solitons & Fractals, Elsevier, vol. 26(1), pages 117-129.
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    Cited by:

    1. Zhiqiang Cheng & Wencheng Wang & Yuezhang Dai & Lun Li, 2022. "Novel One‐Dimensional Chaotic System and Its Application in Image Encryption," Complexity, John Wiley & Sons, vol. 2022(1).

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