基于OpenFlow技术的量子密码通信网络设计

Design of quantum cryptographic communication network based on OpenFlow technology

软件定义网络(SDN)通过OpenFlow技术将网络设备的控制平面和数据平面分离开来,从而实现了对网络资源的灵活控制。文中设计了一种基于SDN的量子密码通信网络模型,实现了对整个密码通信网络中量子密钥资源的灵活控制,保证了信息传输的安全性。此外,还提出了一种同时考虑跳数和端到端可用密钥的路由算法,使得由QKD生成的密钥得到有效的利用。实际测试结果表明,基于SDN和所提出的路由算法,有效地利用了量子密钥资源,提高了网络的性能。

Software Definition Network (SDN) separates the control plane and data plane of network equipment through OpenFlow technology,realizing flexible control of network resources.A quantum cryptographic communication network model based on SDN is designed,which realizes the flexible control of quantum key resources in the whole cryptographic communication network and ensures the security of information transmission.In addition,a routing algorithm considering both hops and end-to-end available keys is proposed to make effective use of the keys generated by QKD.The actual test results show that the quantum key resources are effectively utilized and the network performance is improved based on SDN and the proposed routing algorithm.