Truth random number producing method and device

Abstract

The invention relates to a device and method for producing a truth random number; the device comprises a single photon random pulse source, a clock unit, a random bit extracting module based on an FPGA (field programmable gate array) and a computer; the random bit extracting module based on the FPGA comprises a controller, a counter, a multi-bit FIFO (first in first out) memory, a buffer unit, a comparator, 1-bit FIFO memory and a communication interface control module; the buffer unit comprises a first register and a second register. The technical problem that the current random number has great randomness, slow speed and bad stability is solved; and the random bit extracting method is circular, continuous, unlimited and high-speed.

Description

technical field

[0001] The invention belongs to the technical field of random signal sources, and in particular relates to a device and method for generating true random numbers. Background technique

[0002] Random numbers are widely used in radar systems, secure communication systems, simulation and other fields. There are currently three main methods for generating random numbers in the literature. One is to generate random numbers through a certain algorithm. The count, determined entirely by the mathematical algorithm and initial input parameters, is predictable. Once this definite mathematical algorithm and input parameters are cracked, the security of confidential communication will be lost, so the scope of application is limited. The second is to use physical noise and the uncertainty of its output to generate random signals. For example, according to whether the noise voltage is greater than or less than a given value, the corresponding digital quantity is given....

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