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A switching node device of a quantum secure communication network system and a communication network system including the apparatus

A technology for quantum secure communication and switching nodes, which is applied to secure communication devices and key distribution, can solve problems such as the expansion of user needs and the inability of point-to-point quantum key distribution systems to meet practical applications, and achieve the effect of achieving path calculation and avoiding failure to update.

Pending Publication Date: 2019-01-22
中共中央办公厅电子科技学院 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The well-developed point-to-point quantum key distribution system cannot meet practical applications, and user needs are gradually expanding

Method used

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  • A switching node device of a quantum secure communication network system and a communication network system including the apparatus
  • A switching node device of a quantum secure communication network system and a communication network system including the apparatus
  • A switching node device of a quantum secure communication network system and a communication network system including the apparatus

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Embodiment 1

[0044] Embodiment 1: Quantum secure communication network system of the present invention

[0045] Such as figure 2 As shown, in one embodiment, the quantum secret communication network system based on quantum key distribution of the present invention includes an access node, a switching node and a relay node, and each node is connected using a classical channel and a quantum channel respectively, wherein The classical channel for quantum key distribution between nodes uses IP-free communication.

[0046] A quantum channel refers to a physical channel for transmitting quantum signals; a quantum signal refers to a physical signal that carries information in a microscopic quantum state, such as a single photon modulated on polarization, time, orbital angular momentum, etc.

[0047] Classical channels are physical channels for transmitting classic signals; classic signals refer to signals that carry information in macroscopic physical quantities in modern communication technolo...

Embodiment 2

[0061] Embodiment 2: The access node device of the switching node of the present invention

[0062] 1. The overall structure of the access node device of the switching node of the present invention

[0063] The overall structure of the switching node device of the present invention is as follows: image 3 As shown (taking four logical links as an example).

[0064] Functionally, the integrated switching node device is divided into a logical link access subsystem and a switching data processing subsystem. Logical link access subsystems such as image 3 Logical Link A, Logical Link B, Logical Link C and Logical Link D are respectively docked to realize the communication functions required for accessing the corresponding logical links, including the quantum encryption corresponding to the switching node on the same logical link. Key management, management of communication keys between switching nodes or access nodes connected to the same logical link, security protection of bu...

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Abstract

The invention provides a switching node device of a quantum secure communication network system and a communication network system including the device. The switching node device of the quantum securecommunication network system of the invention enables the switching node of the quantum secure communication network system to be connected with the access node and the relay node respectively by using the classical channel and the quantum channel, and the classical channel of the quantum key distribution among the nodes adopts the IP-free mode for communication. The switching node device of theinvention makes the logical links in the switching node isolated so as to reduce the influence between each other, and the distributed routing effectively avoids the problem of single point failure and the dynamic calculation of the transmission path to improve the network adaptability.

Description

technical field [0001] The invention belongs to the technical field of quantum communication, and in particular relates to a switching node device of a quantum security communication network system and a quantum security communication network system including the device. Background technique [0002] 1. Quantum key distribution [0003] Quantum key distribution uses the principle of quantum non-cloning and the basic characteristics of quantum indivisibility, and uses single photons to transmit random numbers. According to the BB84 protocol, each photon randomly selects the base vector for modulation, and the receiving end also uses a random base vector for monitoring. When the base vector selected by the sending end is consistent with the receiving end, the received signal is considered valid and recorded; if the base vector selected is inconsistent, the data is discarded. In this way, it can be guaranteed that the sender and the receiver have obtained a consistent sequenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/709H04L12/703H04L12/733H04L12/741H04L12/751H04L9/08H04L45/243H04L45/02H04L45/122H04L45/28H04L45/74
CPCH04L9/0819H04L9/0852H04L9/0869H04L45/02H04L45/20H04L45/245H04L45/28H04L45/54
Inventor 谢四江冯雁阎亚龙童新海戚巍冯刚周旭华徐莉伟
Owner 中共中央办公厅电子科技学院
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