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An all-optical true random number generation method

A technology of true random number and generation method, applied in the direction of random number generator, etc., can solve problems such as insufficient code rate, achieve the effect of overcoming technical limitations, overcoming additional structural problems, and reducing requirements

Active Publication Date: 2017-07-28
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to provide an all-optical true random number generation method to solve the problems of insufficient code rate and other common problems in the above-mentioned prior art, and to be suitable for modern secure communication and large-scale parallel computing

Method used

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  • An all-optical true random number generation method
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  • An all-optical true random number generation method

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Embodiment Construction

[0027] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings, but this implementation example should not be construed as limiting the present invention.

[0028] Implement a kind of all-optical true random number generation method that the above-mentioned provision of the present invention provides, and its described method is carried out according to the following steps:

[0029] Step 1. The pulse width output by the active mode-locked pulsed laser is about 1.7ps, and the repetition rate is f =10 GHz, ultrashort optical pulse sequence with a wavelength of 1550 nm, after the action of the pulsed optical amplifier, its peak power can be increased to 2 kW. The ultrashort pulse signal is used as the pump source to enter a section of 5 m long high nonlinear dispersion shifted fiber with a nonlinear coefficient of 25 / W / km through a polarization maintaining fiber. The zero dispersion point is located at 155...

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Abstract

An ultrafast all-optical true random number generation method is to use optical equipment to generate ultrashort pulse sequences, and perform spectral cutting to obtain narrowband ultrashort pulse sequences, and then perform power adjustment to make the average power of each sequence equal, and then convert them into different pulse state, then the N The parallel true random code implements an equal difference delay, so that there is an equal delay between two adjacent true random pulse sequences, and finally time division multiplexing forms a code rate of N x f Ultrafast all-optical true random number sequences for . This method uses time-division multiplexing technology to generate high-speed true random numbers, which reduces the requirements for entropy source bandwidth. The need for confidential communication security.

Description

technical field [0001] The invention relates to a method for generating all-optical true random numbers, which belongs to the field of information technology. It is a method for generating ultra-high code rate true random number sequences. It is mainly used in secure communication and large-scale parallel computing to quickly generate Safe and reliable true random number or key. Background technique [0002] In the field of secure communication, the rapid generation of safe and reliable random numbers (also known as keys) is related to national defense security, financial stability, commercial confidentiality, personal privacy and many other aspects. [0003] In secure communication, random numbers are generally used as keys to encrypt plaintext information. As long as the key is not cracked, the security of the transmitted information is guaranteed. According to Shannon's "one-time pad" theory, absolutely secure confidential communication must meet the following conditions...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F7/58
Inventor 王云才李璞王冰洁张建忠张明江王安帮张建国
Owner TAIYUAN UNIV OF TECH
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