Study of Non Linear Design Approach for High Time Resolution Pulse Generation on FPGA

True Random Number Generator (TRNG) has vital role in data encryption for cyber security system. This paper proposes the TRNG circuit design and implementation to generate a pulse that has a high time resolution which is equal to the time delay of the buffer cell. The idea is to generate such a pulse without using a high frequency clock and meet the design into realising an effective, high speed, entropy source for cyber security systems. The randomness of TRNG is analysed in three approaches like Non-linear based Ring Oscillator (RO), Linear RO and DFF Jitter RO. The validation of the proposed design and implementation is performed using National Institute of Standards and Technology (NIST) test suite software.