An Image Encryption Method Based on Logistic Chaotic Mapping and DNA Coding

Jiayu Lin, Kangnan Zhao, Xin Cai, Danning Li,Zuxi Wang

Proceedings of SPIE(2020)

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摘要
This paper proposes a new image encryption algorithm, which is based on Logistic chaotic mapping and DNA coding. A variable parameter logistic mapping coupled chaotic system is proposed to generate pseudo-random sequences with good pseudo-random properties. Before encrypting plain-text images, the distinct features of some special images are eliminated by superposing them with a pseudo-random image. Combining with DNA encoding operation, an encrypting algorithm of cross-operation of diffusion and peunutation is designed. The simulation results show that the proposed algorithm has large key space, high sensitivity to key and plain-text, and good robustness to resist exhaustive attack, statistic attack, differential attack, etc. It shows that the proposed method has good encryption effect and security.
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关键词
Chaos,DNA code,Pseudo random number,image encryption
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