High-Speed True Random Number Generator With Multiple Entropy Sources: Ring Oscillator Jitter and Random Telegraph Noise

True random number generator (TRNG) is widely used in the field of hardware security as a key component that can enhance system security. In this paper, a TRNG with multiple entropy sources is proposed based on random telegraph noise (RTN) and ring oscillator (RO) jitter. The proposed TRNG utilizes a direct digital synthesizer (DDS) to realize the phase control and frequency control for generating random sequences, which is implemented on Field Programmable Gate Array (FPGA). By using the NIST randomness test suit, the resilience and randomness characteristics are verified with the compact cell design of four RO and one RTN source. Moreover, the proposed TRNG achieves random sequence output with a maximum frequency of 200 MHz and low energy consumption of 5 pJ/bit. Our findings may provide great potential for developing high-performance and security hardware devices and systems.