A Novel High-speed FPGA-based True Random Number Generator Based on Chaotic Ring Oscillator

Abstract

This paper presents a novel true random number generator with entropy source based on swappable matrix feedback ring oscillator (SMFRO). The proposed SMFRO structure utilizes multiple feedback mechanism to produce reliable chaotic oscillation. Three SMFROs implemented on FPGA with different resource configurations are tested. All of them can pass chaotic oscillation and NIST tests. Proposed design can generate random bits at 500MHz without extra post-processing.