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Device and method for enhancing safety of co-driven chaotic synchronization system

A technology for system security and chaotic synchronization, applied in the field of devices that enhance the security of a common driving chaotic synchronization system, can solve problems such as poor communication security, and achieve the effects of improving security, flat spectrum, and high-quality chaotic synchronization

Pending Publication Date: 2022-01-04
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of poor communication security caused by relaxation oscillation and feedback time delay in the existing jointly driven chaotic synchronous system, the present invention provides a device and method for enhancing the security of the jointly driven chaotic synchronous system, so that the spectrum of the chaotic signal is flat, Eliminate time-delay characteristics, realize high-quality chaos synchronization, and improve system security

Method used

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  • Device and method for enhancing safety of co-driven chaotic synchronization system
  • Device and method for enhancing safety of co-driven chaotic synchronization system
  • Device and method for enhancing safety of co-driven chaotic synchronization system

Examples

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Embodiment 1

[0046] This embodiment provides a device that enhances the safety of a common driving chaos synchronization system, such as figure 1 As shown, it includes a transmitting end, a first receiving end, a first dispersion compensation device, a second receiving end and a second dispersion compensation device;

[0047] The transmitting end generates the main chaotic signal, divides the main chaotic signal into the first main chaotic signal and the second main chaotic signal, and sends them to the first receiving end and the second receiving end;

[0048] The first receiving end receives the first primary chaotic signal, and generates the first secondary chaotic signal after being processed by the first dispersion compensation device; the second receiving end receives the second primary chaotic signal, and after being processed by the second dispersion compensation device, Generate the second slave chaotic signal and realize chaos synchronization with the first slave chaotic signal. ...

Embodiment 2

[0051] This embodiment provides a device that enhances the safety of a common driving chaos synchronization system, such as figure 2 As shown, it includes the first laser, the first fiber coupler, the first polarization controller, the first adjustable optical attenuator, the fiber mirror, the first optical isolator, the erbium-doped fiber amplifier, the second fiber coupler, the first Two adjustable optical attenuators, the second polarization controller, the first optical circulator, the first chirped fiber grating, the second laser, the third adjustable optical attenuator, the third polarization controller, the second optical circulator, a second chirped fiber grating, a third laser, a first photodetector, a second photodetector and an oscilloscope;

[0052] The output end of the first laser is connected to the input end of the first fiber coupler, the first output end of the first fiber coupler is connected to the input end of the first polarization controller, and the ou...

Embodiment 3

[0062] This embodiment provides a device that enhances the safety of a common driving chaos synchronization system, such as image 3 As shown, only the sending end is different from the device for enhancing the safety of the synchronous system for jointly driving chaos described in embodiment 2, and the others are the same; an optical filter and a third fiber coupler;

[0063] The output end of the first superradiant semiconductor laser is connected to the input end of the second optical isolator, the output end of the second optical isolator is connected to the input end of the broadband tunable optical filter, and the output end of the broadband tunable optical filter is connected to the input end of the broadband tunable optical filter. The input end of the third optical fiber coupler is connected, the first output end of the third optical fiber coupler is connected to the first receiving end, and the second output end of the third optical fiber coupler is connected to the ...

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Abstract

The invention discloses a device and a method for enhancing the safety of a co-driven chaos synchronization system, and relates to the technical field of chaos communication carriers, and the device comprises a transmitting end, a first receiving end, a first dispersion compensation device, a second receiving end and a second dispersion compensation device. The transmitting end generates a main chaotic signal, divides the main chaotic signal into a first path of main chaotic signal and a second path of main chaotic signal, and sends the first path of main chaotic signal and the second path of main chaotic signal to the first receiving end and the second receiving end; a first receiving end receives a first path of main chaotic signal, and after the first path of main chaotic signal is processed by a first dispersion compensation device, a first path of slave chaotic signal is generated; and the second receiving end receives the second path of main chaotic signal, and after the second path of main chaotic signal is processed by the second dispersion compensation device, a second path of slave chaotic signal is generated to realize chaotic synchronization with the first path of slave chaotic signal. According to the invention, two paths of chaotic signals with flat frequency spectrums and no time delay characteristic can be generated, high-quality chaotic synchronization is realized, and the safety of a co-driven chaotic synchronization system is improved.

Description

technical field [0001] The present invention relates to the technical field of chaotic communication carrier, more specifically, to a device and method for enhancing the security of a common driving chaos synchronization system. Background technique [0002] Due to the characteristics of ergodicity, aperiodicity, continuous broadband spectrum and noise-like characteristics of chaotic signals, chaos has become a hot issue in the field of information security research. Since the success of the research on chaos synchronization, the application of chaos synchronization has been paid more and more attention, and it has been widely used in research fields such as chaos secure communication, random number generation, and key distribution. At present, the mainstream schemes based on chaos synchronization include optical security communication based on chaos synchronization and key distribution based on chaos synchronization. The optical security communication scheme based on chaot...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04B10/85H04B10/2525
CPCH04L9/001H04B10/85H04B10/2525
Inventor 高震森廖磊吴琼琼付松年王云才秦玉文
Owner GUANGDONG UNIV OF TECH
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