Identity authentication method, system and equipment based on super-dense coding and storage medium

Abstract

The invention relates to an identity authentication method, system and device based on super-dense coding and a storage medium. The method comprises the following steps: a user A and a user B respectively obtain and share a shared key Key with the length of 2n through a quantum key distribution protocol; according to a shared key Key, a user A prepares a Bell state entanglement particle pair sequence, and every two bits in the shared key Key correspond to one Bell state entanglement particle; the user A sends a particle sequence in the Bell state particle sequence to the user B and sends the particle sequence to the user C; According to the particle sequence and the super-dense code of the particle sequence, the user C performs mutual identity authentication on the user A and the user B. According to the invention, identity verification between two users is completed through quantum super-dense coding and third-party measurement; identity authentication is carried out according to the super-dense code of the Bell entangled state, and quantum entanglement resources are saved on the premise that the length of a verification key is certain.

Description

technical field [0001] The present application relates to the field of identity identification, in particular to an identity authentication method, system, device and storage medium based on ultra-encrypted codes. Background technique [0002] Identity authentication is a process of verifying the identity of each user in communication, and it is a very good method to prevent illegal users from impersonating legitimate users to communicate. The security of classical identity authentication generally depends on the complexity of mathematical algorithms. Therefore, their security will be threatened in the era of quantum computers. [0003] At present, although a series of researches on identity authentication have been carried out and fruitful results have been obtained, there are still some deficiencies. First of all, the efficiency of identity authentication is not high. At present, identity authentication is mostly a one-to-one model, that is, each user is independently au...

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Problems solved by technology

On the other hand, the current research on quantum identity authentication generally needs to prepare quantum entangled states such as Bell state, GHZ state, and GHZ-like state to complete identity authentication. For example, the scheme proposed in the prior art uses Bell state or multi-particle The entanglement characteristics of the entangled state complete identity authentication, but the preparation of the entangled state requires more physical resources than the preparation of single photons, and it is not easy to prepare under the existing optical technology, nor can it be completely measured. These technical obstacles make The practicability of preparing entangled states to complete identity authentication is greatly reduced

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