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Secret key relay method based on quantum secret communication network

A technology of quantum secure communication and key relay, applied in the field of key relay in quantum secure communication network, can solve the problems of increasing time consumption, insecurity, etc. Effect

Pending Publication Date: 2022-04-15
NAT QUANTUM COMM GUANGDONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The relay node needs to go through two XOR operations of encryption and decryption, which increases the time consumption in the transmission process; when the relay node performs the XOR decryption operation, the relay key will exist in plain text, which has hidden dangers of insecurity

Method used

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  • Secret key relay method based on quantum secret communication network
  • Secret key relay method based on quantum secret communication network
  • Secret key relay method based on quantum secret communication network

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples, but the protection scope of the present invention is not limited to the following specific examples.

[0032] Such as figure 1 As shown, a key relay method based on quantum secret communication network, the method includes the following steps:

[0033] see figure 1 with 2 As shown, a key relay method based on a quantum secure communication network is applied to a quantum secure communication network, and the quantum secure communication network includes multiple KMSs, multi-user Alice terminals and Bob terminals, and multiple trusted relays Nodes, multiple KMS, multi-user Alice and Bob and multiple trusted relay nodes form the entire huge communication network, where any communication unit includes a KMS, an Alice, a Bob and multiple trusted For relay node connection, KMS ...

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Abstract

The invention discloses a secret key relay method based on a quantum secret communication network, and the method comprises the steps: sequentially storing a quantum secret key in Alice, selecting a secret key k1, transmitting the secret key k1, transmitting a command to the Alice to an access node, and after the access node receives a name, transmitting a secret key XOR value which is stored in the node and is calculated in advance to a relay node 1; and in the relay node 1, performing XOR processing on the received key and a key XOR value which is stored in the node and calculated in advance, sequentially processing all the following relay nodes and access nodes according to the previous steps, and finally transmitting to a Bob end for XOR processing. In the quantum key sending process, the relay nodes can carry out calculation in advance in parallel, exclusive or processing is carried out on the stored quantum keys, the calculation result is stored, only one-time exclusive or processing is needed to be carried out on each relay node or access node, the calculation amount is reduced, and then the efficiency of the transmission process is improved.

Description

technical field [0001] The invention relates to the fields of quantum security communication and quantum computing, in particular to a key relay method in a quantum security communication network. Background technique [0002] Quantum communication is a new communication method that utilizes quantum superposition state and entanglement effect to transmit information. It is a new interdisciplinary subject developed in the past two decades and belongs to a new research field combining quantum theory and information theory. With the advancement of technology, quantum communication has gradually moved from theory to realization in recent years, and is developing in the direction of engineering. The security of quantum communication is based on physical principles rather than traditional computational complexity. In theory, it can realize the absolute security of data transmission, so it has attracted people's attention. [0003] The quantum secure communication network is mainl...

Claims

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Application Information

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IPC IPC(8): H04L9/08
Inventor 郭邦红胡敏
Owner NAT QUANTUM COMM GUANGDONG CO LTD
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