Now we are ready to implement the l

Now we are ready to implement the large-scale CRNG. Its structure is designed as shown in Figure 5. We construct n Duffing maps with the same structure in the microcontroller. Each Duffing map has different initial values. According to the butterfly effect mentioned above, we can get 2n random numbers. It is worth mentioning that the microcontrollers have a large amount of program memory capacity and fast computing speed, which means that we can use the microcontroller to complete the large-scale CRNG in Figure 5 and obtain a large amount of random numbers in a very short period time.