Design and analysis of hardware Trojans in approximate circuits

Approximate computing can accept errors in computation systems to achieve better utilisation of hardware resources. has been successfully developed integrated circuits, such as approximate arithemtic circuits and accelerators. Unfortunately, recent works show that also have security vulnerabilities. Hardware Trojan is one the biggest threats security. However, very limited research conducted on Trojans circuits. In this letter, two types Trojans, namely Function-destructive Information-leaking are presented. The designed based characteristics effectiveness analysed using evaluation metrics for