A Quantum Swarm Authentication Method Based on Grover Algorithm

Abstract

The invention belongs to the technical field of quantum computing and quantum authentication, and relates to a quantum group authentication method based on the Grover algorithm. A private share is used as the identity information of the registered user and sent to the registered user through the classic channel, and a group identifier is generated for the network group and sent to the network group through the classic channel; in the authentication stage, each user participating in the authentication according to his own identity information Carry out unitary transformation to the authentication quantum state with the group identifier, and finally the group returns the authentication quantum state after the unitary transformation to the authentication management center for comparison to obtain the authentication result; the present invention uses the Grover operator, and the Grover operator The usage of the system has been extended, and the group user identity and the network group identifier can be authenticated at the same time, and the double authentication improves the security of the authentication method.

Description

technical field [0001] The invention belongs to the technical field of quantum computing and quantum authentication, and relates to a quantum group authentication method based on a Grover algorithm. Background technique [0002] As we all know, authentication is an effective method to ensure the integrity of transmitted information, and identity authentication technology is often used in specific scenarios such as e-commerce and voting, and has a very wide range of application scenarios in real life. The security of traditional authentication protocols is mostly based on the computational complexity of discrete logarithms, quadratic residues, and factorization of large numbers in classical cryptography. However, with the rapid development of quantum technology in recent years, the powerful computing power of quantum computers poses a huge challenge to the security of these classical protocols. The quantum encryption technology in the contemporary background is based on the ...

AI Technical Summary

Problems solved by technology

The rotation operator and projection operator in the algorithm have high research value, and some existing quantum associative memory models and quantum machine learning algorithms use the idea of ​​the Grover algorithm, but the group identity authentication scheme based on the Grover algorithm still has No, especially the characteristics of the Grover operator can actually be combined with the threshold idea as a group identity authentication algorithm

[0004] In recent years, the research on quantum identity authentication schemes proposed by quantum technology has been increasing, but most of the existing quantum authentication schemes consider the identity authentication of both quantum communication parties. If multiple users participate in the authentication, the authentication process needs to be carried out multiple times. Iterative authentication is inefficient, wastes classical resources and quantum resources, and cannot authenticate multiple user identities at the same time

[0005] This authentication method is proposed to solve the defects and inefficiencies that the existing quantum authentication schemes cannot simultaneously authenticate multi-user identities

Images