Obfuscation Algorithm Design Based on Fully Homomorphism

Protecting effectively integrated circuit (IC) intellectual property (IP) cores has become an urgent problem. Obfuscation is an effective measure to protect IP cores of IC design. After studying the full homomorphism algorithm and the hardware obfuscation theory, a obfuscation algorithm design scheme is proposed based on the full homomorphism. in this scheme, the feasibility of the full homomorphism method in the hardware circuit is analyzed. Then, obfuscated data selector and multiplier are implemented based on full homomorphic algorithm. Finally, the proposed hardware circuit of obfuscation algorithm are designed in the TSMC 65nm process. Experimental results show that the full homomorphism algorithm based on hardware obfuscation has the correct logic function and the encrypted output data has the better randomness.