Chaotic Image Encryption Algorithm Based on Circulant Operation

Xiaoling Huang, Guodong Ye and Kwok-Wo Wong

Abstract and Applied Analysis, 2013, vol. 2013, 1-8

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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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlaaa:384067

DOI: 10.1155/2013/384067

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