A Novel Multi-Channel Image Encryption Algorithm Leveraging Pixel Reorganization and Hyperchaotic Maps

Wei Feng, Jiaxin Yang, Xiangyu Zhao (), Zhentao Qin, Jing Zhang, Zhengguo Zhu, Heping Wen and Kun Qian
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Wei Feng: School of Mathematics and Computer Science, Panzhihua University, Panzhihua 617000, China
Jiaxin Yang: School of Mathematics and Computer Science, Panzhihua University, Panzhihua 617000, China
Xiangyu Zhao: School of Electrical and Information Engineering, Panzhihua University, Panzhihua 617000, China
Zhentao Qin: School of Mathematics and Computer Science, Panzhihua University, Panzhihua 617000, China
Jing Zhang: School of Mathematics and Computer Science, Panzhihua University, Panzhihua 617000, China
Zhengguo Zhu: School of Mathematics and Computer Science, Panzhihua University, Panzhihua 617000, China
Heping Wen: School of Electronic Information, Zhongshan Institute, University of Electronic Science and Technology of China, Zhongshan 528402, China
Kun Qian: Key Laboratory of Hunan Province on Information Photonics and Freespace Optical Communications, Hunan Institute of Science and Technology, Yueyang 414006, China

Mathematics, 2024, vol. 12, issue 24, 1-26

Abstract: Chaos-based encryption is promising for safeguarding digital images. Nonetheless, existing chaos-based encryption algorithms still exhibit certain shortcomings. Given this, we propose a novel multi-channel image encryption algorithm that leverages pixel reorganization and hyperchaotic maps (MIEA-PRHM). Our MIEA-PRHM algorithm employs two hyperchaotic maps to jointly generate chaotic sequences, ensuring a larger key space and better randomness. During the encryption process, we first convert input images into two fused matrices through pixel reorganization. Then, we apply two rounds of scrambling and diffusion operations, coupled with one round of substitution operations, to the high 4-bit matrix. For the low 4-bit matrix, we conduct one round of substitution and diffusion operations. Extensive experiments and comparisons demonstrate that MIEA-PRHM outperforms many recent encryption algorithms in various aspects, especially in encryption efficiency.

Keywords: chaotic systems; multi-channel; image encryption; pixel reorganization; cryptanalysis; performance analysis (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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