Practical quantum secure communication method

A quantum security communication and quantum technology, which is applied in the field of practical quantum security communication, can solve the problems of inability to communicate and put into practical application, and achieve the problems of overcoming high bit error rate, improving efficiency and practicability, and overcoming low response rate Effect

Inactive Publication Date: 2019-03-05
熊英
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Problems solved by technology

Quantum key distribution (Quantum key distribution, QKD) and quantum secure direct communication (Quantum secure direct communication, QSDC) are two important research directions of quantum communication. Among them, QKD is a practical random number online negotiation method, but It is not possible to directly communicate predet

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Embodiment Construction

[0038] In order to make the technical solutions and advantages of the present invention clearer, as a part of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be clear that the described embodiments are only some of the embodiments of the present invention, but 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 creative efforts fall within the protection scope of the present invention.

[0039] figure 1 It is a flow chart of a practical quantum secure communication method according to an embodiment of the present invention, and it is characterized in that it includes the following steps:

[0040] Step 1. The sender groups the messages to be sent into groups of m bits, and sends each message group in order; for each message group M, use the error correction code EC...

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Abstract

The invention discloses a practical quantum secure communication method, which mainly solves the practical problem of quantum secure direction communication of the given data. According to the practical quantum secure communication method in the invention, a classic error correcting code is used to perform error correcting coding on a message and a random number is used to carry out encryption protection; the obtained ciphertext is used as a state selecting sequence to carry out non-orthogonal quantum state coding, and the obtained quantum state is used as a signal state; then, a certain number of non-orthogonal quantum states are randomly generated and used as a detection state; the detection state or the signal state is randomly sent according to a synchronous clock; a receiving end carries out random measurement and estimates quantum error rate and quantum response rate according to the detection result of the detection state; the correlation between the measurement result of the signal state and the state selecting sequence of a sending end is used for carrying out error correcting decoding and obtaining a target message. The practical quantum secure communication method in theinvention has unconditional security, can be implemented by using a current single-photon or weak coherent state quantum communication system and has a good application prospect in the field of network security and secure communication.

Description

technical field [0001] The invention relates to the technical field of secure communication using information encoding, error correction code, data encryption protection and quantum communication technology, and in particular to a practical quantum secure communication method. Background technique [0002] Quantum communication is a new communication method that realizes information transmission through quantum channels. Its main advantage is that it can detect eavesdropping and realize unconditionally secure communication. Quantum key distribution (Quantum key distribution, QKD) and quantum secure direct communication (Quantum secure direct communication, QSDC) are two important research directions of quantum communication. Among them, QKD is a practical random number online negotiation method, but It is not possible to directly communicate predetermined data; QSDC is a technology that directly transmits predetermined data through quantum channels, but the currently disclos...

Claims

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Application Information

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IPC IPC(8): H04L9/08
CPCH04L9/0852H04L9/0858
Inventor 熊英陈娟
Owner 熊英
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