A 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 a multimode laser, belonging to the secure communication field. The system includes a driving end and two bidirectionally coupled receiving / transmitting ends, and the same external chaotic light injection signal is provided to the bidirectionally coupled receiving / transmitting end through the driving end, realizing the control of each mode of the bidirectionally coupled receiving / transmitting end multimode laser In chaotic synchronization, information is loaded into chaotic carriers of different modes of multi-mode lasers at the receiving / transmitting end in different time slots to realize bidirectional wavelength hopping transmission of information. The present invention simultaneously utilizes the information security enhancement characteristics of the chaotic communication technology and the wavelength hopping technology, can improve the physical layer transmission confidentiality of information, and is suitable for high confidentiality communication services; Chaotic synchronization can improve the information confidentiality transmission capacity of the system.

Description

technical field [0001] The invention belongs to the field of secure communication, and in particular relates to a wavelength-hopping chaotic secure communication method and system based on a multi-mode laser. Background technique [0002] With the explosive growth of network capacity and users, people pay more and more attention to information security. The "Twelfth Five-Year Plan for the Communication Industry" promulgated by my country in 2012 clearly listed information security as a development during the "Twelfth Five-Year Plan" period. One of the key points. In the current application and research, people mainly improve the security of the communication system by performing traditional information encryption in the media access control layer, but there are few researches on the security of the physical layer which is most vulnerable to attack. Therefore, it is of great significance to realize the confidential transmission of information in the physical layer to improve ...

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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