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A mdi-qkd method based on quantum network

A quantum and network technology, applied in the field of quantum communication, can solve problems such as extending the safe communication distance and not being long enough, and achieve the effects of ensuring independence, communication security, and avoiding attacks

Active Publication Date: 2020-02-21
南京南瑞网络安全技术有限公司 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This special structure removes the attack of eavesdroppers on the measurement equipment during the operation of the protocol and ensures the security of communication. However, the safe communication distance of the protocol is not long enough, and further improvement is needed to extend the safe communication distance.

Method used

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  • A mdi-qkd method based on quantum network
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Embodiment Construction

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Such as figure 2 As shown, this embodiment provides a quantum network-based MDI-QKD protocol. The protocol of this embodiment mainly includes four parts: the legitimate communication user Alice of the quantum network source node and the destination node Alice1 of the quantum network destination node, the legal The communication user Bob and the third-party measurement equipment; the source node and the destination node are in the same quantum network. The source node and the...

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Abstract

The invention discloses an MDI-QKD (Measurement-Device-Independent Quantum Key Distribution Protocol) based on a quantum network. According to the protocol, quantum teleportation in the quantum network is applied to a traditional unilateral MDI-QKD. Advantages of an original MDI-QKD are kept. Independence of a security protocol for measurement equipment is ensured. All attacks at a measurer side in a QKD system are effectively avoided. According to the quantum teleportation in the quantum network, communication secure distance can be greatly extended. According to the protocol, the quantum teleportation in the quantum network is applied to the MDI-QKD, the communication security is ensured, and moreover, the distance of the MDI-QKD is greatly extended.

Description

technical field [0001] The invention belongs to the technical field of quantum communication, in particular to an MDI-QKD protocol based on a quantum network. Background technique [0002] Quantum secure communication is based on quantum physics and informatics, and its security is guaranteed by the basic principles of quantum mechanics. Quantum key distribution is the most important content in quantum secure communication and is considered to be the most secure encryption method. It enables communicating parties to generate and share a random, secure key to encrypt and decrypt messages. In 1984, Bennett and others first proposed the QKD protocol in the history of quantum cryptography, the BB84 protocol. After more than 30 years of development, various new QKD protocols have emerged one after another, such as: cyclic differential phase shift protocol, QKD based on pulse modulation protocol, decoy-state two-way QKD protocol, and so on. Among them, Hoi-KwongLo et al. propose...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04B10/85H04B10/70
CPCH04B10/70H04B10/85H04L9/0852
Inventor 刘金锁于浩冯宝潘子春胡倩倩卓文合贾玮李振伟张影张璐昝继业吕超卞宇翔完颜绍澎马亚妮赵生妹
Owner 南京南瑞网络安全技术有限公司
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