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提出一种通过一次量子通信同时实现密钥分发(QKD)和量子认证(QA)的方案。此方案基于GHZ态的相关性,事先在|△>态制备n对处于纠缠态的量子位。最后证明了此协议是有效和绝对安全的。
A scheme to realize key distribution (QKD) and quantum authentication (QA) simultaneously by a quantum communication is proposed. Based on the correlation of GHZ states, n (n) pairs of qubits in the entangled state are prepared beforehand in the | Δ> state. Finally, it is proved that this protocol is effective and absolutely safe.