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Quantum secret communication network system based on quantum key distribution technology, and application thereof

A technology for quantum secure communication and quantum key distribution, applied in the field of quantum secure communication network systems, can solve problems such as network attacks, achieve the effects of avoiding network attacks, improving transmission security, and overcoming single point failure problems

Pending Publication Date: 2019-02-01
中共中央办公厅电子科技学院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3. Existing IP-based networking methods
Therefore, the whole network uses TCP / IP technology to connect and face more network attacks.

Method used

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  • Quantum secret communication network system based on quantum key distribution technology, and application thereof
  • Quantum secret communication network system based on quantum key distribution technology, and application thereof
  • Quantum secret communication network system based on quantum key distribution technology, and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1: A quantum secure communication network system based on quantum key distribution

[0045] like figure 1 As shown, in one embodiment, the quantum secure communication network system based on the quantum key distribution technology of the present invention physically includes three types of network nodes: access nodes, switching nodes, access nodes and relay nodes, and a management center, Each node is connected by classical channel and quantum channel respectively, and the classical channel of quantum key distribution adopts non-IP mode for 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 i...

Embodiment 2

[0066] Embodiment 2: Workflow of the quantum secret communication network system based on quantum key distribution of the present invention

[0067] 1. Network production process

[0068] like image 3 As shown, the communication key negotiated between the access node / switching node depends on the quantum key generated by the underlying QKD device for secure transmission. The underlying QKD device refers to the quantum key distribution device or module, which is divided into a transmitter and a receiver. The two are connected by a quantum channel and a classical channel, and run a quantum key distribution protocol, such as the BB84 protocol.

[0069] The generation process of the communication key is described as follows:

[0070] 1) Access nodes, switching nodes, and relay nodes realize the generation of quantum keys between adjacent nodes through their respective internal QKD modules or devices, that is, q 1 ,...,q 15 ;

[0071] 2) The access node / switching node generat...

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Abstract

The invention discloses a quantum secret communication network system based on quantum key distribution technology, and an application thereof. The quantum secret communication network system physically comprises an access node, a switching node and a relay node, the nodes are respectively connected by using classic channels and quantum channels, wherein the classic channel for quantum key distribution performs communication in a non-IP mode; and the network system is logically divided into a quantum key distribution layer, a relay link layer, a network transmission layer, a service provisionlayer and a user application layer from bottom to top. The quantum secret communication network system disclosed by the invention overcomes the single point failure problem caused by a centralized routing server in the existing network; and the quantum secret communication network system disclosed by the invention communicates the classic channel for quantum key distribution in the non-IP mode, thereby effectively avoiding the network attacks for the TCP / IP technology, and the communication protection based on a quantum key is used as a basic function to further enhance the transmission security of the classic channel.

Description

technical field [0001] The invention relates to the field of quantum communication networks, in particular to a quantum secret communication network system based on quantum key distribution technology. 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 that of 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 sequence of random numbers (that is, a quantum key). The quantum key...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/0852H04L9/0869H04L63/062H04L69/161
Inventor 阎亚龙谢四江童新海冯刚戚巍周旭华冯雁徐莉伟
Owner 中共中央办公厅电子科技学院
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