TRUE RANDOM NUMBER GENERATION DEVICE USING OSCILLATOR SAMPLING METHOD

摘要

A device for generating a true random number by using an oscillator sampling method is provided to generate a true random number at low cost with low power consumption while fast generating the true random number by digitally designing the device and using an oscillator control function. A device(100) for generating a true random number includes a first oscillating circuit(110) providing output of oneself as data input; a second oscillating circuit(120) providing output of oneself as clock input; a POR(Power On Reset) circuit(130) providing output of oneself as reset input; a first D-flipflop(140) operating with the input of the data, clock, and reset; an inverter(160) inverting output of the second oscillating circuit; and a second D-flipflop(150) having output of the first D-flipflop as data input, output of the inverter as clock input, and operated by a reset signal applied from the outside to generate a true random number. The POR circuit provides an operation starting signal to the first and second oscillating circuits and provides a reset signal to the first D-flipflop.