A Two-Layer For Image Encryption Using Lorenz and Rossler Chaotic Systems

  • Received
    November 18, 2023
  • Revised
    February 17, 2024
  • Accepted
    February 19, 2024
  • Published
    February 20, 2024


  • Asmaa Y. Albakri
  • Oguz Karan


Unauthorized access to images in the digital age requires robust encryption techniques. This paper introduces a new two-layer colour image encryption algorithm that uses the chaotic dynamics of the Lorenz and Rossler systems. By processing XOR by deciding with chaotic random integers (CRINs) derived from these systems, the algorithm achieves a high level of protection for colour images. Each layer of randomness and inherent sensitivity to the initial conditions of chaotic systems makes encryption stronger for colour images. The decryption in the second party follows the same steps of encryption, ensuring efficient recovery of the original image from the encrypted image. The built-in encrypted layers form a highly secure image that is resistant to various types of attacks and other important advantages, such as enhanced security and computational efficiency, making it suitable for protecting images in diverse applications.


Image encryption, chaotic systems, Stream and block ciphering, PSNR, SSIM, MSE


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