Identity authentication method and system based on continuous variable quantum key distribution, medium and equipment

Abstract

The invention provides an identity authentication method and system based on continuous variable quantum key distribution, a medium and equipment. The identity authentication method comprises the steps that a user side and an authentication center share a binary key bit string through the continuous variable quantum key distribution system; the user side encodes the held binary identity authentication key by using the shared binary key bit string to obtain a natural number string and sends the natural number string to the authentication center through a channel; the authentication center receives the natural number string and decodes a binary identity authentication key of the user side through the shared binary key bit string, so that whether the user side is a legal user or not is judged; and the user side and the authentication center update and generate a binary identity authentication key of the next stage on the basis of the shared binary key bit string, and repeatedly execute the steps 1-4 to perform identity authentication of the next stage. According to the invention, identity authentication and key distribution and updating of the user are realized, and unconditional security which other protocols do not have is achieved.

Description

technical field [0001] The present invention relates to the technical field of communication identity authentication, in particular to an identity authentication method, system, medium and equipment based on continuous variable quantum key distribution. Background technique [0002] Since mankind entered the information age, the demand for communication security has never ceased. With the establishment of information theory, cryptography has matured as an independent discipline. In modern communication systems, various mathematical encryption algorithms are often used, such as DES, MD5, RSA, AES and so on. However, these encryption algorithms have a common shortcoming that their security depends on complex mathematical problems, and is based on computational complexity theory. However, with the development of quantum computing in recent years, and even the realization of "quantum supremacy", the traditional traditional encryption algorithms based on the computational comple...

AI Technical Summary

Problems solved by technology

However, most of the current research focuses on quantum key distribution, and there are few studies on other quantum cryptography protocols.

Especially in terms of quantum identity authentication (CVQIA), there is little research

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