A quantum cryptography network dynamic routing architecture system

Abstract

The invention discloses a quantum cryptography network dynamic routing architecture system. The system realizes dynamic routing selection for encryption communication by using quantum cryptography according to the change of quantum key quantity between relay nodes of the quantum cryptography network. Specifically, a routing server is set up for the relay nodes of the entire quantum cryptography network, and the topology update cycle of the quantum cryptography network is set; in each topology update cycle, each relay node collects and processes the state information of the relay node, and the The result is reported to the routing server. After the routing server collects the topology state information of each relay node, it generates the topology state information of the quantum cryptography network in the next topology update period, and sends it to all relay nodes of the quantum cryptography network. According to the quantum cryptography network topology state information obtained from the routing server, each relay node calculates and determines the next-hop route of the communication data whose destination relay node is any other relay node according to the shortest path rule.

Description

[0001] This application is a divisional application with application date: January 7, 2013, application number: 2013100051051, and name of invention: a quantum cryptography network dynamic routing method application. technical field [0002] The invention relates to the communication field of a quantum cryptography network constructed by a quantum communication network and a classical communication network, in particular to a quantum cryptography network dynamic routing architecture system. Background technique [0003] Quantum communication is a new interdisciplinary subject developed in the past two decades, and a new research field combining quantum theory and information theory. Recently, this subject has gradually moved from theory to experiment, and to practical development. Efficient and secure information transmission has attracted increasing attention. [0004] Physically, quantum communication can be understood as high-performance communication realized by using q...

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Problems solved by technology

[0017] 3. The encryption mechanism of the quantum cryptography network needs to consume a large number of keys. Sometimes the key consumption speed is much faster than the generation speed. The path of the quantum cryptography network will be in an unusable state due to insufficient quantum keys at both ends of the path. Network, the path status of quantum cryptography network often changes frequently

[0020] Chinese Patent No. 201010144106.0 discloses "a quantum router for a multi-user optical quantum communication network and its routing method". Does not consider whether the amount of quantum keys on the communication path is sufficient

However, this patent solution has two disadvantages: first, the overall routing path selected by this patent solution may not be the shortest path; The encryption capability of a hop path with the lowest encryption capability is lower than that of another optional overall routing path, and the encryption capability of a path is often subject to the encryption capability of the hop path with the lowest encryption capability

[0021] The above patents related to quantum cryptography network routing do not provide a complete solution for dynamic routing of quantum cryptography networks, that is, how to transmit communication data from the initial node to the destination node through the selection of relay nodes according to the change of the topology state of the quantum cryptography network. Guaranteed communication security while consuming fewer quantum keys

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