Rapid Run-Time DRAM PUF Based on Bit-Flip Position for Secure IoT Devices

IoT services are expanding beyond basic sensor networks to various services such as connected cars, smart factories, and smart cities. As a result, security issues are also growing rapidly, especially for low-cost IoT devices. One of good security solutions is to use the Physical Unclonable Function (PUF) technology to uniquely identify hardware components. In this paper, we propose a new approach to reduce the latency of the decay based DRAM PUF at run-time in commodity IoT devices. Experimental results based on Intel Galileo Gen2 Boards show that our methods can quickly generate the PUF values with good uniqueness and uniformity within 15 seconds.