Device and method for generating high-speed random number based on photoelectric oscillator

Abstract

The invention discloses a device and a method for generating a high-speed random number based on a photoelectric oscillator. The device comprises a first light-emitting module, a second light-emitting module, a positive feedback loop comprising an optical circulator and a photoelectric detector, a wavelength division multiplexer, an open optical fiber and a random number generation module. The open optical fiber is used for generating backward Rayleigh scattering light, and the backward Rayleigh scattering light forms a random optical signal after being gained; the random optical signal is converted into a random microwave signal in a photoelectric detector in the positive feedback loop, and a random number generation module generates a random number based on the random microwave signal. The random number generated based on the photoelectric oscillator has the technical effects of non-periodicity, unpredictability and non-reproducibility; meanwhile, the optical fibers are combined after being subjected to different delay lengths after being split, so that multiple paths of random optical signals are superposed, and the uniformity of random number distribution is improved; and a plurality of cables with different lengths are arranged, so that the random number generation speed is increased.

Description

technical field [0001] The invention relates to the field of microwave photonics technology and high-speed random number generation, in particular to a device and method for generating high-speed random numbers based on a photoelectric oscillator. Background technique [0002] Random numbers, that is, random sequences obtained through random experiments, are widely used in communication, cryptography and Monte Carlo simulation, and have important application value. However, the pseudo-random sequence generated by the pseudo-random number generator in the random number has a limited length and has a certain periodicity. At the same time, the pseudo-random number depends on a complex algorithm and a given initial value, and both the algorithm and the initial value are controlled. possibility of cracking. Compared with pseudo-random numbers generated by computer algorithms, true random numbers obtained based on physical random phenomena such as thermal noise, spontaneous emiss...

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Problems solved by technology

However, the pseudo-random sequence generated by the pseudo-random number generator in the random number has a limited length and has a certain periodicity. At the same time, the pseudo-random number depends on a complex algorithm and a given initial value, and both the algorithm and the initial value are controlled. possibility of cracking

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