Design of (PUF) Physical Unclonable Function Using FPGA and Secured Clock Network (SCN)

Abstract

A constant growth in the number of microelectronic devices and applications is accompanied by a constant rise in the need for goods that are genuine and secure, as well as for electronic systems that are trustworthy. The security requirements for the vast majority of applications are quite stringent and continually evolving, as is the case with most technologies. On top of that, new and more intricate assaults are being developed on a regular basis. These assaults typically have a significantly higher impact than regular attacks, and there is nothing that can be done to compensate for them other than to deploy more software countermeasures to protect against them. The outcome is the development of a PUF (Physical Unclonable Function) system based on clock networks with the goal of improving security. In the rapidly developing field of on-chip Physical Unclonable Functions (PUFs), a powerful security primitive with the capability of addressing a wide range of security challenges is emerging as a viable option. Specific to electrical circuits, we demonstrated a PUF system based on a clock network that may be used to overcome the security difficulties associated with such circuits. An unclonable circuit is created by merging the clock network, return path, and multiplexer (Mux) blocks together. This is a circuit that cannot be reproduced. Sinks are included in the clock network, and they are used to split the data received as input. When a signal is transferred from the clock network to the mux network, the return path is used to transmit the information. Mux networks are made up of three components: a multiplexer, a delay buffer, and an SR latch (synchronous response latch). When the PUF circuit responds, it returns a single bit that cannot be replicated. In a circuit, a PUF is an external device that may be used to prevent cloning of the circuit from taking place. An effective power supply unit (PUF) must have the ability to endure changes in circuit timing that are both reversible and irreversible in nature. For a wide range of applications, PUF functions provide low-cost, highefficiency, and secure identification and authentication of devices using a number of methods. Anyone attempting to replicate the protected circuit in its same form will find it difficult, and as a result, they will not be able to achieve the same functionality as the device. As a consequence, we will be able to prevent the gadget from being replicated in the future.