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    Quantum Secure Direct Communication Protocol with Mutual Authentication Based on Single Photons and Bell States

    Lili Yan1, *, Shibin Zhang1, Yan Chang1, Zhibin Sun2, Zhiwei Sheng1

    CMC-Computers, Materials & Continua, Vol.63, No.3, pp. 1297-1307, 2020, DOI:10.32604/cmc.2020.09873

    Abstract Quantum secure direct communication (QSDC) can transmit secret messages directly from one user to another without first establishing a shared secret key, which is different from quantum key distribution. In this paper, we propose a novel quantum secure direct communication protocol based on signal photons and Bell states. Before the execution of the proposed protocol, two participants Alice and Bob exchange their corresponding identity IDA and IDB through quantum key distribution and keep them secret, respectively. Then the message sender, Alice, encodes each secret message bit into two single photons (| 01〉or|10〉) or a Bell state , and composes… More >

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