Title:	Experimental assessment of FIRO- and GARO-based noise sources for digital TRNG designs on FPGAs
Authors:	Schramm, Martin Reiner, Dojen Heigl, Michael
Citation:	2017 International Conference on Applied Electronics: Pilsen, 5th – 6th September 2017, Czech Republic, p.221-226.
Issue Date:	2017
Publisher:	Západočeská univerzita v Plzni
Document type:	konferenční příspěvek conferenceObject
URI:	http://hdl.handle.net/11025/35441
ISBN:	978–80–261–0641–8 (Print) 978–80–261–0642–5 (Online)
ISSN:	1803–7232 (Print) 1805–9597 (Online)
Keywords:	střídače;logické brány;programovatelná hradlová pole;prstencové oscilátory;entropie;multiplexování;standardy
Keywords in different language:	inverters;logic gates;field programmable gate arrays;ring oscillators;entropy;multiplexing;standards
Abstract in different language:	The quality of TRNG designs mainly depends on the grade of the noise source from which the entropy will be harvested to extract randomness. Especially for purely digital noise sources suitable for FPGA implementations the use of Ring Oscillators is suggested in many scientific publications. Standard Ring Oscillator based noise sources however have earned some criticism regarding the amount of entropy generated. On this account different enhancements have been proposed, with Fibonacci Ring Oscillators (FIROs) and Galois Ring Oscillators (GAROs) being prominent examples, which under some circumstances are able to sustain a chaotic oscillation suitable for entropy extraction. This paper deals with the assessment of fully constrained FIRO and GARO noise source designs for a specific target FPGA. Due to the restrictive placement of ring elements the assessment yielded new criteria for choosing proper FIRO/GARO feedback configurations and an enhanced sampling method for entropy extraction has been derived.
Rights:	© Západočeská univerzita v Plzni
Appears in Collections:	Applied Electronics 2017 Applied Electronics 2017

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