Long-distance key distribution system based on chaos synchronization

A key distribution system and chaotic synchronization technology, applied in the field of secure optical communication, can solve the problems of low security, analog signals easily affected by noise, short distribution distance, etc.
CN113193949AActive Publication Date: 2021-07-30TAIYUAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TAIYUAN UNIV OF TECH
Publication Date
2021-07-30

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Abstract

The invention belongs to the technical field of secret optical communication, and particularly relates to a long-distance secret key distribution system based on chaos synchronization, which solves the technical problems in the background technology, and comprises a one-drive-two communication structure consisting of a drive part and two communication parties, or a two-drive-two communication structure consisting of two drive parts and two communication parties which are respectively connected. A digital optical signal is used as a driving signal, the synchronization state of a laser output signal is responded through phase regulation of keying injection light, in the process, the digital signal is used as the driving signal for long-distance transmission, the influence of noise in a link on the digital signal is low, the synchronization quality is improved, the key distribution distance is increased, the system can be used for long-distance transmission, and the long-distance synchronization quality is improved.
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Description

technical field

[0001] The invention belongs to the technical field of secure optical communication, in particular to a chaotic synchronization-based long-distance key distribution system. Background technique

[0002] Confidential communication is related to national stability, social security, privacy protection and many other aspects. In today's era, secure communication is developing in the direction of large capacity and long distance. There are two main types of secure communication: encrypting the channel and encrypting the message. The security of information encryption depends on the security of the key. The existing secure communication distance is limited by the key distribution distance. Therefore, the safe long-distance distribution of keys to legitimate communication parties is an important research content for long-distance secure communication.

[0003] The existing key distribution scheme based on chaotic synchronization is that the legal user uses the sy...

Claims

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