Bidirectional digital image secure transmission and recognition based on a long-distance chaos synchronization system with machine learning capability

In this paper, we propose and numerically demonstrate a chaotic watermarking encryption and secure transmission scheme based on two synchronized response lasers (RLs) subject to identical injection from a driving laser (DL). In this proposed system, the chaos signals from DL can be optimized after passing through a phase modulator and a dispersion component, then the chaotic signal with large bandwidth and low TDS is obtained. Simultaneously injecting this chaotic signal into two identical RLs, high-quality chaos synchronization between two RLs can be realized. Both synchronized chaotic signals are respectively divided into two parts. One is used to generate shared keys required by the watermarking encryption, and the other is used as chaotic carrier to realize the secure message transmission. After introducing the synchronized optical chaos into the watermarking encryption algorithm, the normalized correlation of the extracted watermark without long-distance transmission is 0.9554 and can still maintain above 0.9 over 200km transmission fiber. The message transmission and watermark extraction have good robustness to the fiber parameter mismatches, and excellent performances can be maintained even within 20% mismatches range. Moreover, the security of the watermarking encryption algorithm and the message transmission can be guaranteed simultaneously.

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“…The signal propagation in optical fiber channels could be described by the following nonlinear Schrödinger equation [22]:…”

Section: Security-enhanced Watermark Transmissionmentioning

confidence: 99%

Security-enhanced watermark embedding and transmission based on synchronized chaotic semiconductor lasers

et al. 2022

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“…In generalized synchronization systems, the relationship between subsystems can be divided into bidirectional coupling [17,18] and unidirectional coupling [19,20]. Bidirectional coupling means that the drive and response systems influence each other.…”

Section: Control Principlementioning

confidence: 99%

Attenuation of Line Spectra and Vibration Based on a Chaotification Method and Global Analysis

Zuo

Xiang

Zhu

2022

Shock and Vibration

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The chaotification method can be used to weaken the line spectra component of the ship's radiated noise. The main obstacle that plagues the engineering realization of this innovative concept is how to realize the small-amplitude chaotic motion of the nonlinear vibration isolation system (NVIS) in a large parameter range and how to maintain the chaotic state under variable operating conditions. In this paper, the dimensionless dynamic equation of the NVIS with a flexible base is derived. A control method similar to generalized synchronization is used to realize the continuous chaos of the system. The maximum Lyapunov exponent, the conditional Lyapunov exponent, and disturbances are introduced to verify the effectiveness of the control method and its stability and robustness in a large range of parameters. Aiming at the coexistence of multiple attractors, a new global analysis method is proposed, which is used to study the distribution of basin of attraction (BA). According to the changes of BA before and after the system is controlled, the BA is partitioned. Initial conditions from different partitions are selected to study the attenuation effect of line spectra and vibration, and the favorable initial conditions for realizing the small-amplitude chaotic motion of the system are given. The method may be extended to the global analysis of other controlled systems.

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“…The control (Ouannas et al, 2020), tracking, or synchronization (Godavarthi et al, 2020; Ma et al, 2021) of these systems has a vital role in the engineering applications. However, disturbances and system uncertainties are ubiquitous in any engineering system (Li et al, 2021b; Mirrezapour et al, 2021). Hence, their effect should be taken into account when analyzing the system efficiency.…”

Section: Introductionmentioning

confidence: 99%

Adaptive nonsingular integral-type dynamic terminal sliding mode synchronizer for disturbed nonlinear systems and its application to secure communication systems

Vaseghi

Mobayen

Din

et al. 2022

Journal of Vibration and Control

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This study proposes an adaptive nonsingular integral dynamic terminal sliding mode tracker/synchronizer for disturbed nonlinear systems along with its usage in safe communication systems. The convergence of the closed-loop structure under unknown uncertainty and disturbances is guaranteed via Lyapunov analysis. Furthermore, a parameter-tuning method is planned to approximate the upper bound of uncertainty and disturbance terms, since this latter is typically unknown in practice. The proposed approach is used to design a digital secure transmission scheme according to the chaotic systems. The effectiveness of the suggested approach is validated using computer simulations on a benchmark example of chaotic system. The obtained outcomes clearly confirm the ability of the planned control approach enables to attain the desired tracking/synchronizing performance despite the disturbances. Additionally, when implemented to the data encryption of a communication system, the proposed control and secure communication techniques enabled the complete and secure retrieval of the original digital sequences.

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Bidirectional digital image secure transmission and recognition based on a long-distance chaos synchronization system with machine learning capability

Cited by 11 publications

References 34 publications

Security-enhanced watermark embedding and transmission based on synchronized chaotic semiconductor lasers

Security-enhanced watermark embedding and transmission based on synchronized chaotic semiconductor lasers

Attenuation of Line Spectra and Vibration Based on a Chaotification Method and Global Analysis

Adaptive nonsingular integral-type dynamic terminal sliding mode synchronizer for disturbed nonlinear systems and its application to secure communication systems

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