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High-speed key security distribution system and method based on aperiodic chaotic synchronization

A technology of secure distribution and chaotic synchronization, which is applied to key distribution, can solve the problems of poor key distribution security and low transmission rate, and achieve the effect of ensuring security and avoiding security threats

Active Publication Date: 2018-11-06
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the problem of poor security in algorithm-based key distribution and the problem of low transmission rate in physical layer-based key distribution, and provide a high-speed key security distribution system and method based on aperiodic chaos synchronization

Method used

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  • High-speed key security distribution system and method based on aperiodic chaotic synchronization
  • High-speed key security distribution system and method based on aperiodic chaotic synchronization
  • High-speed key security distribution system and method based on aperiodic chaotic synchronization

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A high-speed key security distribution system based on aperiodic chaotic synchronization, as shown in Fig. figure 1As shown, including Alice communication party and Bob communication party, said Alice communication party includes A party semiconductor laser a1, A party polarization controller a2, first A party fiber coupler a3, second A party fiber coupler a8, A party Square power meter a7, A-square oscilloscope a9 and A-side chirped fiber grating a6, the end of the A-side semiconductor laser a1 is connected to the head end of the A-side polarization controller a2, and the end of the A-side polarization controller a2 is connected to To the upper end of the first A-side fiber coupler a3, the lower end of the first A-side fiber coupler a3 is connected to the signal input end of the A-side power meter a7, and the lower ends of the first A-side fiber coupler a3 are respectively The A-side optical attenuator a4 and the A-side phase modulator a5 are connected to the A-side ch...

Embodiment approach

[0048] Further, as another specific implementation of the high-speed key security distribution system based on aperiodic chaos synchronization according to the present invention, the first A-side fiber coupler a3, the second A-side fiber coupler a8, the first A-side fiber coupler a8, the first The coupling ratios of the first B-side fiber coupler b3 and the second B-side fiber coupler b8 are both 50:50.

[0049] The key security distribution method based on the high-speed key security distribution system based on aperiodic chaos synchronization in embodiment 1 includes the following steps:

[0050] 1) The laser signal emitted by the A-side semiconductor laser a1 of Alice’s communication party enters the first A-side fiber coupler a3 after being adjusted by the A-side polarization controller a2, and passes through the lower end of the first A-side fiber coupler a3 In turn, it enters the A-side optical attenuator a4, the A-side phase modulator a5, and the A-side chirped fiber gr...

Embodiment 2

[0056] The second high-speed key security distribution system based on aperiodic chaotic synchronization, such as figure 2 As shown, it includes Alice communication party and Bob communication party, and the Alice communication party includes A party semiconductor laser a1, A party polarization controller a2, first A party fiber coupler a3, second A party fiber coupler a8, the A party Three A-side fiber coupler a12, A-side power meter a7, A-side oscilloscope a9, A-side optical switch a10 and A-side chirped fiber grating a6, the end of the A-side semiconductor laser a1 is connected to the A-side polarization controller a2 The end of the A-side polarization controller a2 is connected to the upper end of the first A-side fiber coupler a3, and the lower end of the first A-side fiber coupler a3 is connected to the signal of the A-side power meter a7 At the input end, the lower end of the first A-side optical fiber coupler a3 is respectively connected to the head end of the A-side ...

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Abstract

The invention belongs to the technical field of secure high-speed key distribution, and particularly relates to a high-speed key security distribution system and a method thereof based on aperiodic chaotic synchronization, wherein the system includes an Alice communication party and a Bob communication party, and both of the communication parties include a semiconductor laser, a polarization controller, a fiber coupler, a power meter, an optical attenuator, an oscilloscope, and a chirped fiber grating. The communication parties of the first embodiment further include a phase modulator, and thecommunication parties of the second embodiment further include an optical switch and a delay line. The invention has a reasonable structure and a clever design, and the key distribution method is reliable in principle, strong in implementation, and easy to operate. When communicating by using the method provided by the invention, the exchange of private keys is not required in the process of keydistribution, which avoids the problem of security threat caused by the leakage of some private keys, and further ensures the security of key distribution.

Description

technical field [0001] The invention belongs to the technical field of safe and high-speed key distribution, in particular to a high-speed key safe distribution system and method based on aperiodic chaos synchronization. Background technique [0002] Secure communication is an important condition for national security and social stability. At present, the research hotspots of modern information security technology mainly focus on information encryption technology. The "one-time pad" proposed by Shannon is an unbreakable encryption scheme. The scheme states that if the key used to encrypt the plaintext is not shorter than the plaintext, is random enough, and is used only once, then the communication is absolutely secure. In order to realize this absolutely secure confidential communication, it is necessary to generate a large number of random keys and distribute them secretly to legitimate communication parties. The generation technology of high-speed random keys has made ...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L9/00H04B10/70
CPCH04B10/70H04L9/001H04L9/0852H04L9/0858
Inventor 王安帮王龙生高华赵彤郭园园贾志伟王云才
Owner TAIYUAN UNIV OF TECH
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