A method of implanting combinational hardware Trojan based on evolvable hardware

In order to reduce the impact of Hardware Trojan (HT) implantation on the original circuit power consumption, a method using Evolvable Hardware (EHW) to implant combinational HT is proposed. First, the truth table of the original circuit is modified according to the category of HT. Secondly, the symmetric value and similar value are used to evaluate the difficulty degree of evolution, and the truth table which is easy to evolve is selected for evolution. Finally, from the various circuits generated by evolution, the circuit close to the number of logic gates and power consumption of the original circuit is selected to replace the original circuit. The obtained circuit not only includes the HT function, but also improve the anti-power detection ability. According to the experimental results, the HT implanted by EHW has smaller power consumption difference than the HT implanted by general method, and has stronger anti-power detection ability.