High-throughput true random number generator based on a dual-input oscillation circuit

Abstract

The rapid development in the fields of information encryption, key generation, and algorithm initialization requires an increasing rate of true random numbers, making it necessary to design a fast true random number generator. In this work, a dual-mode conversion high throughput true random number generator (TRNG) based on a dual input oscillating XOR circuit (DIO-XOR) is proposed, which is designed using DIO-XOR, combined with a MUX selects the feedback mode of the whole circuit: self-feedback/mutual feedback. It is verified by automatic layout and routing on Xilinx Artix-7 and Kintex-7 FPGAs with a throughput rate of 650Mbps, which is achieved with low hardware overhead, and passes the entropy estimation test suite, NIST SP800-90B, as well as TESTU01 with high entropy, the sequences generated in the temperature-voltage fluctuation test pass the NIST SP800-22 test with good robustness.