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为了向用户提供差异化的密钥服务,研究了配备密钥池的可信任量子密钥分配网络.首先,理论分析了数据包时延和密钥池的关系,给出了具体关系式,指出带有密钥池缓存功能的量子密钥分配网络的平均数据包时延与密钥产生速率、密钥池的初始密钥长度、以及数据包的平均长度、到达时间和到达率密切相关.对比理论分析和软件仿真结果,验证了时延分析的正确性.其次,将密钥提供服务分为三类:保证提供型、优先提供型和尽力提供型,并提出了相应的技术实现方案,即提前预约、逐跳插队和逐跳排队;最后,仿真结果表明差异化密钥服务提供机制是有效的.
In order to provide users with differentiated key services, a trusted quantum key distribution network with key pool is studied.Firstly, the relationship between packet delay and key pool is analyzed theoretically, and the specific relation is pointed out The average packet latency of a quantum key distribution network with key pool caching is closely related to the key generation rate, the key length of the key pool, and the average packet length, arrival time, and arrival rate. Theoretical analysis and software simulation results to verify the correctness of the delay analysis.Secondly, the key provision of services is divided into three categories: to provide guaranteed, priority to provide and try to provide type, and put forward the corresponding technical solutions, namely Make an appointment in advance, jump into the queue hop by hop and queue up hop by hop. Finally, the simulation results show that the differentiated key service provision mechanism is effective.