Service protection method and system in quantum key distribution optical network

A business protection and key distribution technology, applied in the field of quantum key distribution, can solve problems such as business transmission interruption

Active Publication Date: 2019-01-01
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current quantum and optical hybrid network, there will inevitably be failures, which will lead to interruption of services during transmission

Method used

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  • Service protection method and system in quantum key distribution optical network
  • Service protection method and system in quantum key distribution optical network
  • Service protection method and system in quantum key distribution optical network

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Embodiment Construction

[0048] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

[0049] image 3 A flowchart of a service protection method in a quantum key distribution optical network provided according to an embodiment of the present invention, as shown in image 3 As shown, the method includes:

[0050] S1, calculate the working path of the service in the quantum key distribution optical network by using the D algorithm or the K algorithm, and obtain all the power-on nodes in the working path; wherein, the all power-on nodes at least include a source node and a sink node , the service includes at least a data service and a key service generated by encrypting the data service;

[0051] S2, according to all the power-on nodes, set up protection paths for the data service...

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Abstract

The invention provides a service protection method and system in a quantum key distribution optical network. The service protection method and system in a quantum key distribution optical network includes the steps: S1, calculating a working path of service in the quantum key distribution optical network by using a D algorithm or a K algorithm, and acquiring all power-on nodes in the working path,wherein all the power-on nodes at least include a source node and a destination node, and the service at least includes data service and key service for encrypting the data service; S2, setting a protection path for the data service and the key service according to all the power-on nodes, and distributing protection resources; and S3, in the transmission process of the service, if the working path fails, switching the service to the protection path for transmission. The service protection method and system in a quantum key distribution optical network can quickly and effectively continue thetransmission of data service and key service in the network after the link fails in the network, and have the capability of maintaining security service.

Description

technical field [0001] The invention relates to the technical field of quantum key distribution, and more particularly, to a service protection method and system in a quantum key distribution light network. Background technique [0002] With the rapid improvement of computer computing power and the continuous deepening of quantum computer research, traditional cryptography is facing the daunting challenge of being more and more easily cracked. Quantum cryptography is the product of the combination of quantum mechanics and cryptography. The use of secure keys distributed by quantum keys in classical optical networks can achieve absolutely secure and confidential communications. However, there will be failures in the light network based on quantum key distribution, which will expose the network to certain risks. Therefore, how to maintain the quality of service of the quantum key distribution light network in the event of failure will become very critical. [0003] Based on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/032H04B10/70H04L9/08
CPCH04B10/032H04B10/70H04L9/0852
Inventor 赵永利王华王健全张杰郁小松马章超
Owner BEIJING UNIV OF POSTS & TELECOMM
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