Security Analysis of Physical Uncloneable Functions

Information-Theoretic Security Analysis of Physical Uncloneable Functions

We propose a general theoretical framework to analyze the security of Physical Uncloneable Functions (PUFs). We apply the framework to optical PUFs. In particular we present a derivation, based on the physics governing multiple scattering processes, of the number of independent challenge-response pairs supported by a PUF. We find that the number of independent challenge-response pairs is propor...

Robust Key Extraction from Physical Uncloneable Functions

Physical Uncloneable Functions (PUFs) can be used as a cost-e ective means to store key material in an uncloneable way. Due to the fact that the key material is obtained by performing measurements on a physical system, noise is inevitably present in each readout. In this paper we present a number of methods that improve the robustness of bit-string extraction from noisy PUF measurements in gene...

On-Chip Electric Waves: An Analog Circuit Approach to Physical Uncloneable Functions

This paper proposes the use of Cellular Non-Linear Networks (CNNs) as physical uncloneable functions (PUFs). We argue that analog circuits offer higher security than existing digital PUFs and that the CNN paradigm allows us to build large, unclonable, and scalable analog PUFs, which still show a stable and repeatable input–output behavior. CNNs are dynamical arrays of locally-interconected cell...

Strong Physical Uncloneable Functions using Arrays of Resonant Tunnelling Diodes

Physically Uncloneable Functions in the Universal Composition Framework

Recently, there have been numerous works about hardware-assisted cryptographic protocols, either improving previous constructions in terms of efficiency, or in terms of security. In particular, many suggestions use Canetti’s universal composition (UC) framework to model hardware tokens and to derive schemes with strong security guarantees in the UC framework. Here, we augment this approach by c...