Quantum key agreement method

Abstract

The invention relates to a quantum key agreement method belonging to the technical field of information security, comprising the following steps: 1, two agreement communications users selecting respective positions in the agreement: if one user decides to select forward agreement, the user selects self to be the server end and the other user becomes the client; 2, the server end begins to monitor the network, then the client inputs the IP address of the server end and begins to connect the server end; 3, the two agreement communications users exchange original error rates and agreement data files with each other and undertake negotiation handling by winnow method which contains adaptive interval selection functions; 4, once inputting the bit string length obtained from the eavesdropper after agreement, any user can decide to begin a privacy enhanced process, so as to obtain a safe communication key in the textboxes of the two agreement communications users. The adaptive interval selecting method of the invention improves the rate of Winnow method, thus increasing the rate of the agreement method.

Description

technical field [0001] The present invention relates to a method in the technical field of information processing, in particular to a quantum key agreement method. Background technique [0002] The combination of quantum mechanics and cryptography gave birth to quantum cryptography, which can complete a perfect security system that cannot be completed only by traditional mathematics. Quantum cryptography proposes a brand-new secure communication system based on quantum theory. It fundamentally solves the problem that quantum characteristics cannot be ignored, and measurement action is an integral part of quantum mechanics. Among these laws, the uncertainty principle plays a key role in quantum cryptography, that is, when measuring a quantum system, it will usually cause disturbance to the system and produce incomplete information about the state of the system before measurement, so any Any effort to monitor a channel interferes in some detectable way with the information tr...

AI Technical Summary

Problems solved by technology

The current negotiation method includes three aspects: interval division, bit judgment and error correction process. The theoretical efficiency of the Winnow method is very high, but because the method needs to use the map method to determine the parameters, the engineering efficiency of the whole method is greatly reduced. The efficiency of the negotiation method has always constrained the engineering realization of quantum secure communication

Images