摘要： 为降低量子设备的成本,更好地执行量子计算,提出基于量子委托计算模式的多方半量子密钥协商协议。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的简单能力。为防止密钥信息被量子中心以及外部窃听者窃取,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。分析结果表明,与其他量子密钥协商协议相比,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。

关键词: 量子计算, 量子委托计算, 量子密钥协商, 半量子密钥协商, 单光子混淆策略

Abstract: In order to reduce the cost of quantum devices and perform quantum computing better,a multiparty semi-quantum key agreement protocol based on delegating quantum computation mode is proposed.Delegating quantum computation model is introduced.The complicated operations such as unitary operation and Bell measurement are entrusted to the quantum center.Participants only need the simple ability of accessing quantum channel and preparing single photons.In order to prevent key information from being stolen by quantum center or outside attackers,the confusion strategy of inserting confusion single photons into target states is used to keep target states safe.Analysis results show that compared with previously quantum key agreement protocols,the quantum capabilities required by the participants significantly decrease,thus improving the practical feasibility of the protocol.

Key words: quantum computation, delegating quantum computation, Quantum Key Agreement(QKA), semi-quantum key agreement, single qubits confusion strategy

中图分类号: 

• TN918