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A centered quantum key service network system

A technology of quantum key and service network, applied in key distribution, can solve the problems of difficult quantum routing technology, difficult to lay and maintain quantum network, high cost, etc., achieve high service efficiency and cost performance, improve flexibility and efficiency, low cost effect

Active Publication Date: 2019-06-04
CHENGDU LINGGUANG QUANTUM TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, since the QKD network requires a dedicated optical fiber channel, there are technical difficulties in not implementing quantum relay technology and quantum routing. The laying and maintenance of quantum networks with complex topological structures are difficult and expensive.

Method used

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  • A centered quantum key service network system
  • A centered quantum key service network system
  • A centered quantum key service network system

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Embodiment Construction

[0022] In order to make the technical solutions and advantages of the present invention clearer, as part of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples. The implementation of the present invention includes but is not limited to the following examples.

[0023] The encryption and decryption involved in the scheme of the present invention have consistency, that is, select a certain key and an encryption algorithm to encrypt a certain data to obtain a ciphertext, and when decrypting, the corresponding key and decryption algorithm must be selected to decrypt the ciphertext; The encryption / decryption using the one-time pad encryption algorithm directly uses the quantum key and the plaintext / ciphertext data for XOR operation; for the encryption / decryption using the data encryption standard algorithm, the shared quantum key is first arranged as a plurality of cryptographic alg...

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Abstract

The invention discloses a quantum key service network system with a center, which mainly solves the technical and cost problems of establishing a large-scale quantum communication network and the problem of low service efficiency. The network provided by the invention comprises a plurality of quantum communication subnets with star-shaped topological structures and safety channels among the quantum communication subnets; The quantum communication subnet comprises a quantum center node, a plurality of quantum service nodes, a quantum optical fiber channel for connecting the quantum center nodeand the quantum service nodes, and a public communication network; Shared keys are distributed among different quantum center nodes through a security channel; The quantum center node and the quantumservice node share a quantum key through quantum link negotiation; And online agreement session keys are provided between the application terminals through the quantum key service network center. Thenetwork laying difficulty is low, the cost is low, centralized management and control are easy, and the service efficiency and the cost performance are higher; The system has a wide application prospect in the field of network security.

Description

technical field [0001] The invention relates to the technical field of quantum key service by using a quantum communication network and the Internet, in particular to a central quantum key service network system. Background technique [0002] Quantum key distribution (QKD) is a novel method for secure key distribution over quantum channels. QKD is based on quantum mechanical principles such as the impossibility of precise cloning of quantum states, and can realize unconditionally secure quantum key distribution. However, since the QKD network requires a dedicated optical fiber channel, there are technical difficulties in not implementing quantum relay technology and quantum routing. The deployment and maintenance of quantum networks with complex topological structures are difficult and expensive. In fact, the core function of the quantum communication network is to provide users with quantum key services. Using a centralized network has the advantages of convenient and fast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
Inventor 熊英陈小光陈娟
Owner CHENGDU LINGGUANG QUANTUM TECH
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