The present research attempts to extend the available literature in the area of secure communications to provide an efficient robust adaptive sliding mode control approach in the presence of uncertainties, external disturbances and unknown parameters. It is obvious that the proposed control approach aims to synchronize two hyper-chaotic systems through secure communication. In order to assure the security of signal sending and receiving, the technique of chaotic parameter modulation is taken into consideration. The stability performance of the present approach is accurately guaranteed via the Lyapunov theorem. Numerical simulation results are carried out to illustrate the proposed approach performance, which is easily able to follow the control objectives.