Noise type random number generator

Abstract

The present invention provides a noise type random number generating device, the noise current source includes: a cascode current source, a resistor, a first common source amplifier, a first mirror, a first CMOS transistor, a second CMOS transistor, a first Three CMOS tubes, a fourth CMOS tube, a first capacitor and a second capacitor; the grid of the first CMOS tube is connected to the grid of the second CMOS tube, so that the drain of the second CMOS tube outputs the first current; the third The gate of the CMOS transistor is connected to the gate of the fourth CMOS transistor, so that the drain of the fourth CMOS transistor outputs the second current. The drain of the second CMOS transistor and the drain of the fourth CMOS transistor are respectively connected to the current comparator, so that the first current and the second current respectively flow into the current comparator to obtain a random number sequence. This increases the rate at which random numbers are generated.

Description

technical field [0001] The invention relates to the communication field, in particular to a noise-type random number generating device. Background technique [0002] Usually, a random number sequence can be generated by amplifying the resistor thermal noise through a comparator, that is, a Truly Random Number Generator (TRNG) based on the resistor thermal noise. [0003] In the prior art, the noise signal is first amplified by a low-noise amplifier, and then the influence of the offset voltage and 1 / f noise is effectively controlled by adding a feedback loop, and the coupling noise is weakened by the de-correlation operation of the post-processing module. influence, thereby further improving the randomness of the output sequence. [0004] However, in the process of realizing true random numbers based on resistor thermal noise, due to the offset of the noise amplifier, the coupling interference between the substrate and the power supply, the limited bandwidth of the amplifie...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a noise-type random number generator to solve the problem of low rate of generating true random numbers

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