Wavelength-hopping chaotic secure communication method and system based on multi-mode lasers

Abstract

The invention provides a wavelength-hopping chaotic secure communication method and system based on multi-mode lasers and belongs to the field of secure communication. The system comprises a driving end and two two-way-coupled sending / receiving ends. The same external chaotic optical injection signals are provided for the sending / receiving ends through the driving end, so that chaotic synchronization of each mode of the multi-mode lasers of the sending / receiving ends is achieved, information is loaded into chaotic carrier waves of different modes of the lasers of the sending / receiving ends in different time slots, and two-way wavelength-hopping transmission of the information is realized. The method and the system utilize the enhanced information security features of chaotic communication technology and wavelength-hopping technology at the same time, can improve the physical-layer information transmission security, and is applicable to high-security communication services. Meanwhile, as the method and the system achieve multi-wavelength chaotic synchronization based on the multi-mode lasers, and the information secure transmission capacity of the system can be improved.

Description

Technical field [0001] The invention belongs to the field of secure communication, and in particular relates to a method and system for wavelength hopping chaotic secure communication based on a multimode laser. Background technique [0002] With the explosive growth of network capacity and users, people pay more and more attention to information confidentiality. my country’s “Twelfth Five-Year Plan for the Communications Industry” promulgated in 2012 clearly listed information security as a development during the “Twelfth Five-Year” period. One of the key points. In the current application and research, people mainly use traditional information encryption at the media access control layer to improve the security of the communication system, but there is little research on the security of the most vulnerable physical layer. Therefore, realizing the confidential transmission of information at the physical layer is of great significance to improving the confidentiality of the commu...

AI Technical Summary

Problems solved by technology

However, the laser chaos security communication systems reported so far all use single-mode lasers, and the information transmission is always kept on one wavelength.

There is a flaw in this: in the case of low transmission rate, the stealer may filter out information from the channel with a wavelength-matched filter or tuned filter (linear filtering method attack), and the stealer can also pass the information in the channel to Chaotic optical signals are injected into wavelength-matched lasers to achieve chaotic synchronization (synchronization attack), thereby intercepting information

At present, there are few researches on wavelength hopping secure communication

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