Cryptology ePrint Archive: Report 2012/662

Asynchronous Physical Unclonable Functions AsyncPUF

Julian Murphy

Abstract: Physically Unclonable Functions (PUFs) exploit the physical characteristics of silicon and provide an alternative to storing digital encryption keys in non-volatile memory. A PUF maps a unique set of digital inputs to a corresponding set of digital outputs. In this paper, the use of asynchronous logic and design techniques to implement PUFs is advocated for Asynchronous Physically Unclonable Functions (APUFs). A new method of using asynchronous rings to implement PUFs is described called ASYNCPUF which features inherent field programmability. It is both a novel and holistic PUF design compared to the existing state-of-the-art as it naturally addresses the two challenges facing PUFs to-date that prevent wide-spread adoption: robustness and entropy. Results of electrical simulation in a 90 nano-meter lithography process are presented and discussed.

Category / Keywords: implementation /

Date: received 22 Nov 2012

Contact author: j p murphy at qub ac uk

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Version: 20121126:014137 (All versions of this report)

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