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Title:
TV-PUF : A Fast Lightweight Aging-Resistant Threshold Voltage PUF
Authors: Tanujay Saha, Vikash Sehwag
Abstract:Physical Unclonable Function (PUF) is the hardware analog of a one-way function which can address hardware security issues such as device authentication, generating secret keys, producing seeds for Random Number Generators, etc. Traditional silicon PUFs are based on delay (Ring Oscillator PUFs and Arbiter PUFs) or memory structures (e.g, SRAM PUFs). In this paper, we propose the design of an aging resistant, lightweight and low-power analog PUF that exploits the susceptibility of Threshold Voltage (Vth) of MOSFETs to process variations. Analysis shows improvement in power consumption, reliability over device aging along with quality metrics like uniformity, reliability and uniqueness for a 64-bit key generation. For 1 GHz clock input, this design consumes 0.18W/bit power with 50 % uniqueness and 51% uniformity along with the independence of these metrics on technology nodes. Experimental results suggest 4% variation in reliability under temperature variation from -55C to 125C and 20% variation in supply voltage. Aging analysis further projects the independence of reliability over device aging.
ePrint: https://eprint.iacr.org/2016/774
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