Banker semi-offline rational quantum state sharing method, device and quantum communication control system

Abstract

The present invention provides a dealer semi-offline rational quantum state sharing method, device and quantum communication control system. The dealer determines and announces the total number of rounds and revealing rounds. Before the total number of rounds is reached, the dealer is in an offline state. In the round, all participants jointly select the reconstruction participants, and the reconstruction participants generate and distribute the quantum state pairs in the EPR to the auxiliary participants, and the auxiliary participants perform X-based measurements on the received quantum states and announce the first measurements Result; after the total number of rounds is reached, the dealer will announce the reveal round, and the reconstruction participants corresponding to the reveal round will send the remaining quantum states to the dealer, and the dealer will add the quantum states to be shared and measure the GHZ state to obtain the second The measurement results, and then the reconstruction participants in the reveal round perform unitary operations on the two remaining particles assigned to themselves according to the first and second test results, so as to reconstruct the quantum state to be shared by the dealer. The workload of the banker is reduced, the fairness is ensured, and the security is improved.

Description

technical field [0001] The present invention relates to the technical field of quantum information sharing, in particular to a banker's semi-offline rational quantum state sharing method, device and quantum communication control system. Background technique [0002] The idea of ​​secret sharing divides the secret in an appropriate way, and each split share is managed by different participants. Unless there are enough authorized participants to cooperate, the secret information cannot be recovered. The purpose of secret sharing is to prevent excessive concentration of secrets, so as to achieve the purpose of dispersing risks and tolerating intrusion. It is an important means in information security and data confidentiality. The key to secret sharing technology is how to better design secret splitting and recovery methods. [0003] Classical secret sharing protocols are used to share secret information among multiple people. The basic idea of ​​secret sharing is that in the ...

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a banker's semi-offline rational quantum state sharing method, device and quantum communication control system to eliminate or improve one or more defects existing in the prior art to solve the existing quantum state sharing technology The problem of high risk of information leakage caused by excessive participation of dealers

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