Quantum walking-based quantum secret sharing method and system with credible authentication

Abstract

The invention provides a quantum walking-based quantum secret sharing method with credible authentication. The method comprises the following steps: a secret participation end preparing single photonsequences SB and SC, encoding the SB and SC according to an identity authentication key of the secret participation end to obtain SB' and SC ', and sending the SB' and SC' to a secret distribution end; the secret distribution end authenticating the identity of the secret distribution end based on the identity authentication key of the secret participation end; the secret distribution end constructing two quantum walking systems based on the SB and the SC, encoding secret information to be shared to the SB and the SC, and recording secret information encoding particles as MB and MC; the secretdistribution end invisibly transmitting the MB and the MC to the secret participation end; the secret participation ends cooperating with each other to complete identity authentication of the secret distribution end and reconstruction of secret information. According to the trusted identity authentication function and the quantum walking circuit, the safety and practicability of the quantum secretsharing method and system can be improved, and interception / retransmission attacks, entanglement attacks, participant attacks and pretending attacks from the inside and the outside are avoided.

Description

technical field [0001] The invention belongs to the technical field of quantum information sharing, and in particular relates to a quantum secret sharing method and system with credible authentication based on quantum walks. Background technique [0002] Quantum Secret Sharing (QSS) is a combination of classical secret sharing and quantum theory, which allows secret information to be distributed, transmitted and recovered through quantum operations (classical information or quantum encoded information). Suppose Alice wants to hand over secret plans to Bob and Charlie at a distance, but she doesn't fully trust Bob and Charlie. The secret sharing protocol plays an important role in the above situation, and the security of QSS is based on the basis of quantum mechanics, which makes QSS more secure than traditional secret sharing. The earliest QSS scheme was proposed by Hillery et al. in 1999, and they used Greenberger-Horne-Zeilinger (GHZ) entangled states to complete secret s...

AI Technical Summary

Problems solved by technology

Therefore, illegals can issue false orders by pretending to be the secret distribution end, instructing the secret participation end to complete illegal tasks, resulting in the leakage of secret information

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