True random number generation method and device

Abstract

The invention discloses a true random number generation method and device which is simple, practical and capable of generating a true random number at high speed. The true random number generation method comprises the steps of performing interference on continuous light and pulse light which have the same central wavelength through an optical beam splitting / combining device, wherein a phase of the pulse light changes randomly, outputting an interference result from an output port of the optical beam splitting / combining device, and performing photoelectric conversion processing to obtain a pulse electric signal with amplitude changing randomly; performing analog-digital conversion on the pulse electric signal to obtain a corresponding digital signal, performing peak value sampling and multi-bit coding quantization on the digital signal, and finally outputting a binary bit string of the true random number. The true random number generation method is the classic information technology for generating the true random number based on quantum physics and is simple in operation, easy to implement, strong in practicability, capable of generating the true random number at high speed by means of mature optics and electronics technology and suitable for popularization and application in the field of the information science technology.

Description

technical field [0001] The invention relates to the technical field of information science, in particular to a method and device for generating a true random number. Background technique [0002] Random number generation has important applications in the field of information science. It can be widely used in Monte Carlo simulation, stochastic process modeling and various secure communication techniques. With the development of information science, especially the continuous breakthrough of classical technologies such as lasers and semiconductors based on quantum physics, people have conducted in-depth research on the generation of random numbers. Although the existing random number generation methods vary widely, the research work focuses on the generation and testing methods of true random numbers, as well as the system complexity, cost, reliability and parameter controllability of the generating device. [0003] The generation of true random numbers mainly utilizes the ra...

AI Technical Summary

Problems solved by technology

For example, by using the vacuum fluctuation of the laser output light field and the chaotic signal output of the semiconductor laser, people can realize the generation of true random numbers. This is a classical information technology that uses quantum physical randomness to realize true random number generation. The classical information technology of the system can realize the high-speed generation of true random numbers, but it needs to use complex post-level electronic assistance to realize the measurement of the phase noise or chaotic characteristics of the laser, which increases the complexity of the system; at the same time, the chaotic signal generation of the semiconductor laser It needs to cooperate with precision optical control systems such as external cavity feedback, which leads to the above-mentioned optical scheme for generating true random numbers, which is not conducive to further development towards practical application.

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