Peak Detector Circuits for Safeguarding Against Fault Injection Attacks

Rate of diversification and evolution among various embedded and IOT devices have made them easily susceptible to new kinds of attacks known as hardware attacks. Physical attacks/hardware attacks have brought new concerns and challenges in the field of security of embedded devices. Embedded devices are generally secured against either software attacks or network attacks, thus paying least attention against emerging type of attacks known as hardware attacks. Fault injection attacks are subfield of hardware attacks where attacker either tampers power supply or clock signal to produce erroneous outputs. Electronics industry needs a solution which is based on detection of such attacks so that further their effects can be mitigated. Detection techniques have been presented here that successfully detect both types of fault injection attacks (negative/positive), in which existing techniques generally lack. Simulated results show detection of both types of voltage fault injection attack, viz.: positive and negative.