Since|γ| < 1 is specified in (12), the error system can smoothly enter the sliding manifold, that is, lim k→∞ s(k) = 0. From the above discussion, we can confirm that the system can smoothly enter the sliding mode under the action of the controller (12) and the error states in (7) can also converge to zero as discussed above, that is, the master-slave CRNGs in (5) and (6) can achieve synchronization.