A physical unclonable function (sometimes also called physically-unclonable function, which refers to a weaker security metric than a physical unclonable function [citation needed]), or PUF, is a physical object whose operation cannot be reproduced ("cloned") in physical way (by making another system using the same technology), that for a given ...

Physical unclonable function (PUF), sometimes also called physically unclonable function, is a physical entity that is embodied in a physical structure and is easy to evaluate but hard to predict.

Abstract—Physical Unclonable Functions (PUFs) are circuit primitives that generate chip specific signatures depending on the uncontrollable components present in the manufacturing process. Authentication, key generation and IP protection are three important usage areas of PUF circuits.

Can an adversary create a software clone of a given PUF chip? Silicon PUF can be used as an unclonable key. The lock has a database of challenge-response pairs. To open the lock, the key has to show that it knows the response to one or more challenges.

Abstract: This paper describes the use of physical unclonable functions (PUFs) in low-cost authentication and key generation applications. First, it motivates the use of PUFs versus conventional secure nonvolatile memories and defines the two primary PUF types: “strong PUFs” and “weak PUFs.”

In this paper, an introduction to Physically Unclonable Functions is given, including their definition, properties and applications. Finally, as an example of how to design a PUF, the general structure of a ring oscillator PUF is presented.

Jul 18, 2021 · In this article, we’ll take a deeper look at how PUFs are classified, the attributes that make a “good” PUF, and design tradeoffs. In the previous article, we discussed physically unclonable functions (PUFs) and why they’re a powerful tool for security on the silicon level.

Jan 1, 2012 · We demonstrate the proposed method with a detailed comparison analysis between two PUFs: the ring-oscillator-based PUF (RO PUF) and the Arbiter-based PUF (APUF) using measured data from PUF implementations in state-of-the-art FPGAs.

Jun 14, 2021 · What Is a PUF? Physically unclonable functions (PUFs) are a technique in hardware security that exploits inherent device variations to produce an unclonable, unique device response to a given input. On a higher level, a PUF can be thought of as analogous to biometrics for humans – they are inherent and unique identifiers for every piece of ...

Abstract: The Physically Unclonable Function (PUF) has become an inescapable security primitive, as it generates a fingerprint unique to each device, and is natively robust against reverse engineering attacks. It allows the user to devise authentication protocols or protect specific software or hardware blocks.