A robust finite-time hyperchaotic secure communication scheme based on terminal sliding mode control

In this paper, a new robust finite-time hyperchaotic secure communication scheme is proposed by combining robust finite-time synchronization of two hyperchaotic systems and hyperchaotic multiplication masking technique. The mentioned synchronization is achieved by introducing new terminal sliding mode controllers. As a main novelty of the introduced scheme, an adjustable total finite time is obtained such that the decrypted message signal will be completely identical with the transmitted message signal for times larger than the discussed finite time. Compared with other secure communication schemes, the suggested method has several advantages including finite-time stability for dynamical system of synchronization errors, high security, easy physical implementation, and robustness against uncertainties. Finally, a numerical simulation is provided to verify the effectiveness of the suggested scheme.