FPGA-Based Modified Ring Oscillator Physical Unclonable Function for Internet of Vehicles

The Internet of Things (IoT) has opened up a world of opportunities for improving our daily lives. One offshoot of the IoT is the Internet of Vehicles (IoV), which aims to enhance traffic safety and provide low route information. However, the security of information exchanged between moving vehicles and wireless mediums is crucial. Physical Unclonable Function (PUF) is an effective security technology that creates a hardware fingerprint based on the unique characteristics of a device. The Ring Oscillator (RO) PUF is the most commonly used PUF. This study proposes an enhanced RO PUF design that generates a 64-bit secret key well-suited for IoV applications. The proposed design demonstrates significant improvements in PUF performance, with a uniqueness, reliability, and uniformity of 49.83%, 99.93%, and 49.75%, respectively. These findings suggest that the enhanced RO PUF design provides effective and reliable solutions for securing IoT devices through PUF-based authentication.