Research And Design Of Quantum Secret Sharing Scheme Based On Identity Authentication

Quantum secret sharing(QSS)is an important branch in the field of quantum communication research.Its core idea is to split the secret information into several parts and manage them jointly by several participants.No participant can recover the original secret information,and only the participants work together can they recover the secret information.In the SQSS schemes,applying the semi-quantum idea to QSS has become the mainstream in practical applications.In addition,identity authentication can play a important role in the security of quantum communication protocols.Therefore,this thesis focuses on the designs the SQSS and QSS based on identity authentication.The mainly research results are as follows:(1)A novel SQSS protocol based on identity authentication was proposed by innovatively combining the idea of identity authentication with SQSS protocol,and using GHZ-type state as quantum carrier.In this protocol,two classical participants(Bob and Trent)performed mutual authentication by using three-particle entangled state(GHZ-type state)and completed the SQSS protocol.Compared with the existing QSS protocols,the semi-quantum idea does not require all participants to have the quantum ability,consumes less quantum resource cost and the proposed protocol is easier to implement in practical applications.In addition,compared with the existing SQSS literature,the proposed protocol can resist most attacks,such as intercept-resend attack,entanglement-measurement attack,modification attack and participant attack.(2)A quantum secret sharing protocol based on single-photon two-way authentication(TAQSS)is proposed,which uses two-way authentication technology to ensure the uniqueness of the identities of the communicating parties.This protocol uses a controlled-not operation to ensure that the control qubit remains unchanged,and the target qubit is flipped when and only when the control qubit is 1,so as to achieve the protection of the quantum state information.In addition,it has been evaluated and compared with the existing QSS literature.The proposed protocol considers the security and energy efficiency of the protocol from multiple dimensions.It uses two-way authentication to ensure the legality of the communication user's identity and the controlled-not gate to ensure the security of the quantum channel.What's more,the quantum carrier used is a single photon state,so it is easier to implement in experiments.