This study first defined a new privacy protection problem,namely,quantum secure multiparty logical XOR(SMC_XOR),and then designed corresponding quantum circuits where multiple participants could jointly calculate the logical XOR of their respective private bits.The proposed quantum SMC-XOR protocol can ensure unconditional security,i.e.,information-theoretical security.Furthermore,we designed a grouping strategy to reduce communication complexity and presented an improved quantum SMC_XOR protocol.The improved quantum protocol is used to secure communication in metropolitan area networks,allowing two remote users to securely transmit confidential messages.Finally,we verified the correctness and feasibility of the proposed quantum SMC_XOR protocol by conducting circuit simulations on the IBM quantum system in Qiskit.
关键词
量子通信网络/量子电路/无条件安全/城域网
Key words
quantum communication network/quantum circuits/unconditional security/metropolitan area networks
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