A Novel Detection Algorithm for Ring Oscillator Network Based Hardware Trojan Detection with Tactful FPGA Implementation

Hardware trojan detection is paid more and more attention in recent years due to the great potential threat imposed by hardware trojan to the whole integrated circuit industry. In this paper, ring oscillator network based hardware trojan detection method is tactfully implemented in FPGA and a novel corresponding detection algorithm is proposed. Incremental compilation technique is applied to design ring oscillator network and to insert trojans in FPGA. The method is verified effective for both sequential and combinational trojans. The trojans can be found with up to 20 to 200 times of detecting measurement based on their active status. Particularly, besides dynamic power consumption, extra static power consumed by trojan circuits are also used to differentiate trojan-free and trojan-inserted circuits.