A lightweight authenticated semi-quantum key distribution (LASQKD) protocol is proposed for secure communication. By pre-sharing a master key and adopting a one-way communication strategy, the proposed protocol allows a quantum user and a classical user to share secret keys without using an authenticated classical channel and any Trojan horse detection device. Security analyses show that the proposed LASQKD protocol is free from well-known attacks, and a simulation implementation proves the feasibility of the proposed protocol. Compared to existing authenticated semi-quantum key distribution protocols, the protocol proposed herein provides improved practicality, indicating its potential for use in modern quantum systems.

中文翻译：

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轻量级认证的半量子密钥分发协议，无特洛伊木马攻击

提出了一种用于安全通信的轻量级认证的半量子密钥分发（LASQKD）协议。通过预共享主密钥并采用单向通信策略，该协议允许量子用户和经典用户共享秘密密钥，而无需使用经过身份验证的经典通道和任何特洛伊木马检测设备。安全分析表明，所提出的LASQKD协议不受众所周知的攻击，并且通过仿真实现证明了所提出协议的可行性。与现有的经过身份验证的半量子密钥分发协议相比，本文提出的协议提供了改进的实用性，表明了其在现代量子系统中使用的潜力。