Aiming at regular physical attacks to chips and systems especially invasive decapsulation attack

a physical security protection system which contains couples several detection mechanisms

is proposed

and the system comprises function module

detection module and response module. The key detection module is made up of physical security boundary

consisting of distributed resistor network

pressure sensing module and sensing module

and anomaly detection module

consisting of temperature sensing module. Based on current condition of system constitution

a prototype which is easy to exhibit and test is achieved with printed circuit board. The relevant functional testing is done

the testing scheme of distributed resistor network is evaluated and the coupling function of detecting mechanism is analyzed. In conclusion

the prototype system can make an effective protection against common means of attack and ensure the effectiveness to some extent.