Hardware Trojan prevention based on Fully Homomorphic Encryption

Hardware Trojans in Integrated Circuits (ICs) can modify their functionality or leak sensitive information. In this study, we apply Fully Homomorphic Encryption (FHE) to prevent the hardware Trojans implantation. ICs cannot access to real information of inputs directly but encrypted information of them from trusted hardwares. In this way, Trojans embedded in the ICs will not obtain any useful information without the decryption key. And our experiment on an 8-to-1 multiplexer has proven the feasibility of our proposed hardware Trojan prevention scheme.