Exploring the Hardware Random Number Generator of Arduino R4 MINIMA
Overview In the Arduino world, it’s common to generate random numbers by reading from an unconnected analog input pin. This method, which leverages the noise of the A/D converter, is a classic example of electronics ingenuity. However, owning an Arduino R4, I decided to explore the unique features it offers for generating true random numbers. The Arduino R4 is equipped with the Renesas RA4M1 (R7FA4M1AB3CFM), which includes an encryption engine called SCE5, featuring a hardware random number generator (TRNG)....