A switched‐capacitor skew‐tent map implementation for random number generation

Abstract

Piecewise linear one-dimensional maps have been proposed as the basis for low-power analog and mixedsignal true random number generators (TRNGs). Recent research has moved towards conceiving maps that operate robustly under the consideration of parameter variations. In this paper, we introduce an oscillator circuit mapping a low-complexity map known as the skew-tent. This oscillator is employed as the basis for a TRNG scheme. Simulation results in TSMC 0.18 m validate the chaotic oscillator and the randomness of the TRNG scheme is verified with the NIST test suite 800-22.

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