His research is in the general area of embedded systems design, including hardware security of embedded systems (data, intellectual property and system security) and reconfigurable hardware design. His active research topics focus on Hardware security, war against illegal IC copy and counterfeiting, IP protection, PUF design and characterization, side channel attacks and countermeasures, TRNG attack, MCryptoPSoC architecture and design, crypto-processor architecture and design, embedded system security, and FPGA security.