University of Twente Student Theses


Design and evaluation of a Ring Oscillator based Physically Unclonable Function

Budnik, Mateusz (2023) Design and evaluation of a Ring Oscillator based Physically Unclonable Function.

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Abstract:Recent developments in Internet of Things (IoT) solutions raise questions about the security of such systems. The diverse nature of IoT networks makes them prone to attacks in which the adversary possesses physical access to one or multiple devices in the network. In such scenarios, an attacker can potentially reverse engineer, replicate and/or IP hijack a device with the intent to circumvent existing network security. A Physically Unclonable Function (PUF) is a hardwarebased security method which utilizes the microscopic physical disorder unique to a device to prevent said attacks. In device authentication applications, the PUF acts as an irreplicable fingerprint, unique to each device instance even for identical device models. In this paper, a Ring Oscillator based PUF has been designed and its performance evaluated on 4 Xilinx Kria KV260 FPGA boards. The physical disorder underlying the RO structure which manifests in the form of frequency fluctuation in the different regions on an FPGA is explored and linked to the variance of delays in today’s CMOS technology. Physical correlation in the design and other systemic biases are evaluated and the performance of the PUF is quantified in terms of the relevant security metrics. At last, relationships between design parameters and the overall performance of the PUF are explored.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering BSc (56953)
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