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

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 di...

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Bibliographic Details
Published inMathematics (Basel) Vol. 10; no. 3; p. 518
Main Authors Fang, Jiunn-Shiou, Tsai, Jason Sheng-Hong, Yan, Jun-Juh, Chiang, Li-Huseh, Guo, Shu-Mei
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2022
Subjects
Algorithms
Chaos theory
Communication
Controllers
Data transmission
Design
Digital imaging
digital redesign
Equations of state
image encryption
Image transmission
Methods
Redesign
S-box
Security management
Sliding mode control
Synchronism
synchronization
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Summary: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.
ISSN:2227-7390
2227-7390
DOI:10.3390/math10030518