A control code multiplexing method

A technology of control code and both parties, applied in the field of control code multiplexing

Active Publication Date: 2020-09-04
HARBIN INST OF TECH
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  • Description
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Problems solved by technology

[0003] In order to solve the existing technical problems, the present invention proposes a control code multiplexing method

Method used

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some 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.

[0030] combine Figure 1-Figure 3 , the present invention proposes a control code multiplexing method, comprising the following steps:

[0031] Step 1. The sending end and the receiving end perform channel detection before performing ciphertext communication, and the sending end uses a weak laser source instead of a single photon source to prepare a single photon sequence N;

[0032] Step 2, adding decoy state photons to the single photon sequence...

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Abstract

The invention provides a control code multiplexing method. The method comprises the following steps: performing channel detection; transmitting a ciphertext by a transmitting end; modulating a ciphertext sequence; and demodulating the ciphertext sequence to complete ciphertext information transmission. Through adoption of the control code multiplexing method provided by the invention, polarizationbasis selection and sequential rearrangement are fused to effectively resist multi-type incoherent attacks in quantum channels. The two quantum signal modulation modes of polarization basis selectionand sequential rearrangement have respective advantages in overcoming attacks. However, the present research cannot give consideration to both modes. The control code multiplexing method provided bythe invention can carry the two modes to achieve the effect of overcoming multi-type incoherent attacks.

Description

technical field [0001] The invention belongs to the technical field of quantum safe direct communication, and in particular relates to a control code multiplexing method. Background technique [0002] The traditional quantum key distribution (QKD) communication mechanism cannot directly complete the transmission of ciphertext. Quantum Direct Communication (QSDC) not only has the security guarantee of QKD, but also can directly complete the ciphertext transmission. The research results of the present invention help to reduce the joint noise interference, and supplement the existing schemes to deal with Trojan horse attacks, split photon number attacks, and brute force attacks. Insufficient force attack, to overcome the disadvantage of double quantum channel attenuation in the two-step transmission of single photon in the process of sending and returning, from the analysis results of bit error rate, it can be seen that the transmission efficiency of ciphertext has been improve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04B10/70
CPCH04B10/70H04L9/0852
Inventor 刘金龙吴芝路杨柱天尹振东朱瑞峰
Owner HARBIN INST OF TECH
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