A real-time optical true random code generator based on supercontinuum

Abstract

The invention discloses a super-continuous spectrum-based real-time optical true random code generator. According to the true random code generator, a super-continuous spectrum entropy source signal is input to a 3dB coupler and equally divided into two paths; one path passes through a delay optical fiber, a polarization controller I and a photoelectric detector I in sequence and enters the positive input end of a differential comparator; the other path passes through a polarization controller II and a photoelectric detector II, and enters the negative input end of the differential comparator; two paths of signals are subjected to difference processing through the differential comparator to obtain a true random password sequence, and the true random password sequence is output by the output end of the differential comparator; and a super-continuous spectrum entropy source is formed by connecting a mode-locked laser, a polarization controller III, a pulsed erbium-doped optical fiber amplifier and a high-nonlinearity optical fiber in sequence. The generator ensures high-quality and quick generation of true random codes and provides infinite true random codes; and the rate of the generator can reach dozens of and even hundreds of Gb / s and is enough to meet the need of modern high-speed secret communication.

Description

technical field [0001] The invention relates to a true random code generator, in particular to a real-time optical true random code generator based on supercontinuum without post-processing, and belongs to the field of information security and confidential communication. Background technique [0002] With the rapid development of computer and network technology, safe and reliable random code generation technology has become an important research direction. It has been widely used in information encryption, identity authentication, online banking, online shopping, etc., which is related to national defense security and financial stability. , commercial secrets, personal privacy and many other aspects. [0003] There are two types of random code generators: pseudo-random code generators and true random code generators. The pseudo-random code generator is based on a certain algorithm (such as the most commonly used DES algorithm and RSA algorithm in modern communication system...

AI Technical Summary

Problems solved by technology

[0006] The specific technical problem to be solved by the present invention is that in the prior art, the real-time generation of high-quality random codes cannot be guaranteed and subsequent processing is required, so as to provide a high-speed real-time true random code generator that does not require sampling and subsequent processing, so as to adapt to the current situation. There is a need for high-speed secure communication

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