In this paper a new authenticated quantum protocol aiming to establish a controlled secure direct communication based on five-particle Brown states is proposed. In comparison with previous ones, higher amount of quantum channel capacity is spent for transferring secret information. The controller takes the responsibility of communication after authenticating its identity to parties of communication and keeps its supervision task till end phase of transferring information. The bidirectional authentication method along with eavesdropping check, uses the pre-transmitted identification and hash. The classical XOR operator is used for preventing from eavesdropping by dishonest ones.

中文翻译：

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基于五粒子布朗态的认证受控量子安全直接通信协议

在本文中，提出了一种新的认证量子协议，旨在建立基于五粒子布朗态的受控安全直接通信。与以前的相比，更多的量子信道容量用于传输秘密信息。控制者在向通信各方验证其身份后承担通信责任，并将其监督任务保持到信息传递结束阶段。双向认证方法连同窃听检查，使用预传输标识和散列。经典的 XOR 运算符用于防止不诚实的人窃听。