基于MDP模型决策安全策略的软件定义量子保密网络

Software-defined quantum secure network based on MDP model decision security policy

为了提升量子保密网络对数据流量的适应匹配能力以及提升网络服务质量(QoS)和用户体验,提出基于马尔科夫决策过程(MDP)安全策略的软件定义量子保密网络(SDQSN)。SDQSN可根据网络流量变化自适应地选择不同的量子密钥管理策略,通过对量子链路的实时监测,基于MDP计算网络收益,决策系统的安全策略,让系统在量子加密和经典加密的安全策略间进行灵活切换,在维护网络安全的同时保证网络的QoS收益。仿真结果表明:SDQSN比传统量子保密网络更具灵活性和动态可调性,能够有效保证网络的全局收益,提升用户体验。

In order to improve the adaptive matching ability of quantum security network to data flow and improve network quality of service(QoS)and user experience,a software-defined quantum security network(SDQSN)based on Markov decision process(MDP)security policy is proposed.SDQSN can adaptively select different quantum key management strategies with the change of network traffic,and rely on the real-time monitoring of quantum link,calculate network revenue based on MDP,and determine the security policy of the system,so that the system can flexibly switch between the security policies of quantum encryption and classic encryption,and maintain network security and ensuring network QoS benefits.The simulation results show that the SDQSN is more flexible and dynamic adjustable than the traditional quantum security network,which can effectively ensure the overall benefits of the network and enhance the user experience.