Adaptive Real-time True Random Number Generator Based on Supercontinuum Random Fluctuation

Abstract

The invention discloses a self-adaptive real-time true random number generation device based on super-continuum spectrum random fluctuation. According to the device, a random fluctuation optical pulse sequence output by a super-continuum spectrum random fluctuation pulse entropy source is divided into two ways through a 3dB optical coupler; one way is directly connected with a negative end of a photoelectric balance detector; the other end is connected with a tunable optical delay line and then is connected with a positive end of the photoelectric balance detector; subtraction is carried out on the two ways of random fluctuation optical pulse signals with relative delay under the effect of the photoelectric balance detector; an obtained true random electric pulse sequence is output by the photoelectric balance detector; and after amplitude limiting amplification shaping is carried out on the true random electric pulse sequence through an amplitude limiting amplifier, a real-time high-speed true random number sequence is obtained. According to the device, after the two ways of super-continuum spectrum random fluctuation pulses are delayed, the subtraction is carried out through the photoelectric balance detector; an unbiased true random numbers is generated self-adaptively without setting and adjusting an amplitude discrimination threshold value; and real-time adjustment is carried out on a code rate of the true random number through a control parameter, thereby facilitating efficient utilization of communication networks of different specifications.

Description

technical field [0001] The invention relates to a high-speed real-time true random number generator, in particular to an adaptive, high-speed real-time true random number generator based on supercontinuum random fluctuations. Background technique [0002] The unpredictability of random numbers has important applications in the field of information security, and is often used in secure communication, identity authentication, and digital signatures. In addition, commercial lottery gaming machines also require random numbers to achieve unpredictability. The application of random numbers in information security essentially uses a random number generated by a random number generator as a key, and uses this key sequence to encrypt plaintext. The ciphertext transmitted through the channel has the risk of being completely cracked. [0003] Algorithms can be used to generate pseudo-random numbers, but their length is limited and periodic; once the length of random numbers used is t...

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Problems solved by technology

[0010] The purpose of the present invention is to solve the problem of insufficient code rate and constant adjustment of the "amplitude threshold" in the existing real-time true random number technology, thereby providing an adaptive real-time true random number generation based on supercontinuum random fluctuations device

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