A novel image encryption method based on hyperchaotic system and pixel information association Online publication date: Tue, 06-Nov-2018
by Lijuan Duan; Dongkui Zhang; Zhenhu Ning; Fan Xu; Guoqin Cui; Peng Liang
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 15, No. 3, 2018
Abstract: In recent years, a variety of image encryption methods based on chaotic systems has been proposed, and has achieved good results. In order to improve the security of image encryption, this paper proposes a new image encryption method with a dynamic key, based on a hyperchaotic system and the association of pixel information, and designs the three-level encryption structure with diffusion encryption, scrambling encryption and re-diffusion encryption. The innovation of this method is to add the whole information of the image and the position information of the pixels in the diffusion encryption, and add the data information of the pixels in the scrambling encryption. The plaintext information of the image is added to the encryption process, which can enhance the security of encryption. Experiments demonstrate that the image encryption method proposed in this paper has the characteristics of strong sensitivity, low correlation between adjacent pixels, anti-differential attack and high security.
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