基于抢占排队模型的电力通信业务量子加密选择方法

Quantum Encryption Selection Method for Power Communications Service Based on Queuing Model of Preemptive Priority

随着电网对信息安全的要求日益提高,量子加密由于无条件安全等优势引起了较多关注。但目前量子密钥生成率远低于电力业务加密需求,因此需要对业务进行选择性加密,文章利用具有抢占优先权的M/M/1模型,对各业务量子密钥排队时延进行计算,与时延要求比对从而判断量子加密与否。仿真给出了各业务量子加密权利和满足Ⅰ、Ⅱ区全部业务需求的最低密钥生成率。在有限生成率下,对电力信息业务选择性应用量子加密给出了合理科学的方法。

With the increasing demand for information security from power grids,quantum encryption has attracted more attention due to unconditional security and other characteristics.However,at present,the quantum key generation rate is far lower than the encryption requirement of power service,so the requirements need to be selectively encrypted.This paper uses the M/M/1 model with preemption priority to calculate the quantum key queuing delay for each service and compared with the delay requirements determines the quantum encryption right of different services.The simulation gives the quantum encryption right for each service and the minimum key generation rate that satisfies all the requirements of services in I and II areas.In the limited generation rate,this paper gives a reasonable and scientific method for selective quantum encryption solution of power information services.