The design of large-scale CRNGs has been completed. We continue to study the synchronization of master and slave large-scale CRNGs. As mentioned above, the large-scale CRNG is composed of n chaotic CRNGs with the same structure, so the synchronization controller for each chaotic CRNGs will also have the same structure. Therefore, we first consider the design of a single master-slave CRNG. The master and slave CRNGs are defined, respectively, as below. Master random number generator: