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A relay device of a quantum secure communication network system and a communication network system including the same

A technology of quantum secure communication and relay device, applied in secure communication device and key distribution, can solve the problem that point-to-point optical fiber quantum key distribution system is difficult to realize long-distance key distribution, so as to reduce the possibility of network attacks and improve the Safety, the effect of reducing the risk of leakage

Pending Publication Date: 2019-01-18
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

[0008] Due to the attenuation effect, the point-to-point optical fiber quantum key distribution system is difficult to achieve long-distance key distribution

Method used

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  • A relay device of a quantum secure communication network system and a communication network system including the same
  • A relay device of a quantum secure communication network system and a communication network system including the same
  • A relay device of a quantum secure communication network system and a communication network system including the same

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Embodiment 1

[0045] Embodiment 1: Current relay device

[0046] In the current solution, the QKD transmitter (QKD-A), QKD receiver (QKD-B) and relay data processing system need to be deployed in each relay node computer room. The three parts are physically independent from each other and communicated through the internal IP connected to the network, such as figure 1 shown. It works as follows.

[0047] 1. QKD-B is connected to the QKD transmitter of the previous node through the quantum channel and the classical channel, and negotiates to generate the quantum key q B And output; at the same time, QKD-A is connected to the QKD receiving end of the successor node through the quantum channel and the classical channel, and negotiates to generate the quantum key q A and output.

[0048] 2. The relay data processing system is externally connected to the relay data processing systems of the previous node and the successor node through classical channels, and internally connected to QKD-A and ...

Embodiment 2

[0050] Embodiment 2: Quantum secure communication network system of the present invention

[0051] 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.

[0052] 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.

[0053] 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 3

[0066] Embodiment 3: The integrated relay device of the relay node of the present invention

[0067] 1. The structure of the integrated relay device of the relay node of the present invention

[0068] Such as image 3 The integrated relay device of the present invention is an integrated device, which includes a quantum key generation module, a communication key processing module and a data relay forwarding module.

[0069] 1.1. Quantum key generation module: QKD-B sub-module and QKD-A sub-module jointly generate quantum keys with the corresponding QKD modules of the previous node and successor node respectively, and the random key generated by the random key generation sub-module output to the communication key processing module for storage under the protection;

[0070] 1.2. Communication key processing module: store the quantum key at both ends in ciphertext, that is, the secret quantum key (T A , T B ); and perform encryption, decryption, and forwarding processing opera...

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Abstract

The invention provides a relay device of a quantum secure communication network system and a communication network system including the device. The relay device of the invention is integrated. The relay device is used for realizing the generation of the quantum key with the neighboring nodes and realizing the data relay transmission in the hop-by-hop mode. Classical channels for quantum key distribution between nodes use IP-free communication. The relay device disclosed by the invention ensures that the generation and use of the quantum key are all inside the device through the integrated design, and reduces various data leakage risks.

Description

technical field [0001] The invention belongs to the technical field of quantum communication, and in particular relates to a relay device of a quantum secure communication network system and a quantum secure 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 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 ...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04B7/155
CPCH04B7/155H04L9/0852H04L9/0858H04L9/0869
Inventor 童新海阎亚龙徐莉伟周旭华谢四江冯雁冯刚戚巍
Owner 中共中央办公厅电子科技学院
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