NDLI: Feedback Based Supply Voltage Control for Temperature Variation Tolerant PUFs

Content Provider	IEEE Xplore Digital Library
Author	Vivekraja, V. Nazhandali, L.
Copyright Year	2011
Abstract	Physical Unclonable Functions (PUFs) are on-chip identifiers which have found many applications related to security. However, such devices suffer from instability due to time varying noise. Variation in operating temperature is a chief contributor to instability in PUFs. In this paper, we propose two different approaches to increase the stability of the popular ring oscillator PUFs against variations in temperature. The first approach involves using non-feedback based optimization of key circuit topologies including the drive strength of transistors and the stage length of the ring oscillators. However, to improve the stability even further, we propose a feedback based supply voltage control scheme. In this scheme, the supply voltage of the PUF is varied based on the operating temperature of the PUF IC. The optimal supply voltage to be applied to the PUF at each of the operating temperature is identified during the evaluation stage of the PUFs and is stored in the form of a micro-code. Also, a novel architecture supporting this scheme is proposed. Experimental results show that a 40% reduction in hardware is achieved by using this novel architecture.
Starting Page	214
Ending Page	219
File Size	577922
Page Count	6
File Format	PDF
ISBN	9781612843278
ISSN	10639667
DOI	10.1109/VLSID.2011.60
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-01-02
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thermal stability Circuit stability Ring oscillators Stability analysis Temperature sensors Voltage control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Hardware and Architecture

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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