NotchPUF: Printed Circuit Board PUF Based on Microstrip Notch Filter

Cryptography

Mitchell Martin¹  Jim Plusquellic¹ 

[1] Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87131, USA;

关键词: physical unclonable functions;    PUF;    printed circuit board;    PCB, band-reject filter;    notch filter, PCB variations;    interdigital capacitor;   

DOI  :  10.3390/cryptography4020011

来源: DOAJ

【 摘 要 】

Physical Unclonable Functions (PUFs) are primitives that are designed to leverage naturally occurring variations to produce a random bitstring. Current PUF designs are typically implemented in silicon or utilize variations found in commercial off-the-shelf (COTS) parts. Because of this, existing designs are insufficient for the authentication of Printed Circuit Boards (PCBs). In this paper, we propose a novel PUF design that leverages board variations in a manufactured PCB to generate unique and stable IDs for each PCB. In particular, a single copper trace is used as a source of randomness for bitstring generation. The trace connects three notch filter structures in series, each of which is designed to reject specific but separate frequencies. The bitstrings generated using data measured from a set of PCBs are analyzed using statistical tests to illustrate that high levels of uniqueness and randomness are achievable.

【 授权许可】

Unknown