What Is a Message Authentication Code?

The purpose is to observe whether those programs that include security protection functions can prevent illegal behaviors, so as to determine whether their security protection is working. When testing is performed, the actual results obtained after the simulation data or simulation operation is processed by the software are compared with the correct results to determine whether the function of the program is reliable and whether the program has been modified. When the program's authenticity, integrity and reliability are detected to be damaged, an alarm is issued in a timely manner.