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提出了一个基于量子委托计算模式的多方半量子密钥协商协议。协议引入量子委托计算模式,将酉操作,Bell测量等复杂量子操作委托到量子中心进行,而参与者仅需具备访问量子信道与制备单光子{|0〉,|1〉,|+〉,|-〉}的简单能力。为了防止秘钥信息被量子中心以及外部窃听者窃取,本文采用在目标量子态中插入混淆单光子的混淆策略来保证目标量子态的隐私性。与其他量子秘钥协商协议相比,参与者所需的量子能力显著降低,从而提升了协议的实际可行性。
A multi-party semi-quantum key agreement protocol based on quantum entropy computing mode is proposed. The protocol introduces the quantum entropy calculation mode, which delegates the complex quantum operations such as unitary operation and Bell measurement to the quantum center. The participants only need to access the quantum channel and prepare single photon {| 0>, | 1>, | +>, ->} simple ability. In order to prevent the key information from being stolen by the quantum center and external eavesdroppers, this paper adopts the confusion strategy of inserting confounding single photon in the target quantum state to ensure the privacy of the target quantum state. Compared with other quantum key agreement protocols, the quantum capabilities required by participants are significantly reduced, thus enhancing the practical feasibility of the agreement.