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Keywords:
secure communication; image encryption; Lyapunov stability; chaotic system
secure communication; image encryption; Lyapunov stability; chaotic system
Summary:
This article suggests a secure communication scheme with a new synchronization technique combining Adaptive Generalized Hybrid Projective Synchronization (AGHPS) and fixed-time stability for chaotic systems. The scheme is based on the structural flexibility of AGHPS but offers guaranteed and fast convergence under fixed-time control regardless of initial conditions. A comparative analysis with a recently published method is performed. The comparison shows a significant improvement in the synchronization time, indicating faster convergence under the same circumstances. In addition, higher performance is achieved by the new method in secure communication applications, especially encrypted image transmission and recovery. Simulations show unambiguous improvement in image recovery quality even under channel interference and parameter uncertainties, i.e., the scheme's efficiency and reliability. This contribution therefore provides a computationally effective and secure synchronization framework with significant advantages over existing approaches and therefore a fine choice for real-time chaos-based communication systems.
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