shows the corresponding state responses of master and controlled slave CRNGs. Figure 9 shows the error response between master and controlled slave CRNGs. Figures 10 and 11, respectively, show the switching function and control input and phase planes of the controlled master-slave CRNG. From the simulation results, it shows the proposed sliding mode control works well and the chaotic behavior of controlled master and slave random number generator can be asymptotically synchronized.