Chaotic Image Encryption Algorithm Based on Circulant Operation

Xiaoling Huang, Guodong Ye and Kwok-Wo Wong

Abstract and Applied Analysis, 2013, vol. 2013, issue 1

Abstract: A novel chaotic image encryption scheme based on the time‐delay Lorenz system is presented in this paper with the description of Circulant matrix. Making use of the chaotic sequence generated by the time‐delay Lorenz system, the pixel permutation is carried out in diagonal and antidiagonal directions according to the first and second components. Then, a pseudorandom chaotic sequence is generated again from time‐delay Lorenz system using all components. Modular operation is further employed for diffusion by blocks, in which the control parameter is generated depending on the plain‐image. Numerical experiments show that the proposed scheme possesses the properties of a large key space to resist brute‐force attack, sensitive dependence on secret keys, uniform distribution of gray values in the cipher‐image, and zero correlation between two adjacent cipher‐image pixels. Therefore, it can be adopted as an effective and fast image encryption algorithm.

Date: 2013
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https://doi.org/10.1155/2013/384067

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Persistent link: https://EconPapers.repec.org/RePEc:wly:jnlaaa:v:2013:y:2013:i:1:n:384067

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