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A privacy encryption algorithm based on an improved chaotic system
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DOI：10.1016/j.optlaseng.2019.06.015.png)
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Abstract
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This paper proposes an encryption scheme based on an improved chaotic system that can hide key information. First, the CML chaotic map is improved, and the chaotic state can be entered from 0. The image of the person is divided into key information and non-key information and spread by different diffusion methods. The RSA algorithm is used to encrypt the size of the key information as part of the key to enhancing the resistance to the chosen plaintext attack. Scrambling is performed at the pixel level using a CML system with a sorting function. The experimental and security analysis results show that the new algorithm has a large key space, is sensitive to keys and plaintext images, has a good encryption effect, and can resist common attack methods.
Keywords:
Coupled map lattice
Key information extraction
RSA
Chaos
Image encryption
Key information encryption
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