Accepting ciphertext is equal to self encrypting ciphertext
NO
Generate clear text internal encryption
YES
Anti-copying chip assists in calculation
Send request
Interruption times<N
Normal execution of main programTimed interruptInterrupt count
The main program continues to executeReceived ciphertextUART receive interrupt
Anti-copying chip
Accept results
Whether collaborative calculation is required
Starting circuitInitial AES verificationSampling to obtain random number
The random number falls within a given interval
