Secure Data Transmission and Image Encryption Based on a Digital-Redesign Sliding Mode Chaos Synchronization

Jiunn-Shiou Fang, Jason Sheng-Hong Tsai, Jun-Juh Yan, Li-Huseh Chiang and Shu-Mei Guo
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Jiunn-Shiou Fang: Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
Jason Sheng-Hong Tsai: Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
Jun-Juh Yan: Department of Electronic Engineering, National Chin-Yi University of Technology, Taichung 41107, Taiwan
Li-Huseh Chiang: Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
Shu-Mei Guo: Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan 701, Taiwan

Mathematics, 2022, vol. 10, issue 3, 1-22

Abstract: In this paper, a novel image encryption algorithm based on chaotic synchronization is proposed. First, a digital-redesign sliding mode controller (SMC) is developed to guarantee the chaos synchronization. The digital redesign method makes it possible to transform a proposed continuous-time SMC to discrete-time SMC whilst maintaining the performance of the robust synchronization. Then, the secret keys are embedded in the state equations of the master chaotic system, such that the secret keys do not appear in the public channel, and utilize the chaotic synchronization to achieve secure communication for transmitting the secret keys from transmitter to receiver. Second, an image encryption algorithm integrating the S-box with chaotic synchronization is established, where the S-box is created by the secret key transmitted from the transmitter. Finally, a detailed analysis of the image encryption algorithm based on chaos synchronization is included to verify the feasibility and effectiveness of this proposed approach.

Keywords: image encryption; digital redesign; sliding mode control; synchronization; S-box (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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