Research On Key Resource Distribution Mechanism Of Quantum Internet Of Things

With the continuous development of modern science and technology,information and communication technology is gradually integrated into our lives,the Internet of things came into being.Internet of things technology is an important foundation to support national strategies such as "network power" and "made in China 2025”,and plays an important role in promoting the upgrading and optimization of national industrial structure.The application of Internet of things involves all aspects of national economy and human social life,such as smart home,digital health care,smart grid,smart city and so on.With the wide application of Internet of things technology,its security and privacy have attracted much attention.The inherent characteristics of Internet of things system,such as heterogeneous networking,complex application scenarios,limited computing and storage capacity,make its security problems very complex.Although the existing Internet of things has adopted a variety of encryption techniques to protect data privacy,most of the existing data encryption techniques are based on classical cryptography techniques of mathematical methods to calculate the complexity of cryptography.These methods are faced with the risk of being cracked by quantum computers and can not guarantee the security of communication in the near future.The security of quantum key distribution is based on the basic principles of quantum mechanics.It allows users separated in physical space to share unconditionally secure keys.It can solve the security problem of Internet of things communication.Based on this,this paper designs the architecture of quantum Internet of things based on the characteristics of Internet of things and quantum key distribution;In order to ensure the efficient use of quantum key resources in Quantum Internet of things,a key resource distribution mechanism of quantum Internet of things is proposed.The research work and innovation of this paper are as follows:(1)Aiming at the security problem of the existing Internet of things communication,this paper proposes the architecture of quantum Internet of things based on the characteristics of quantum key distribution and traditional Internet of things architecture,which introduces the quantum key management layer on the basis of traditional Internet of things architecture,and defines the specific structure and function of each layer of quantum Internet of things architecture,The key distribution scheme under the framework of quantum Internet of things and the workflow of typical applications of quantum Internet of things are designed,which provides a theoretical basis for integrating quantum key distribution into the Internet of things.(2)Aiming at the key resource distribution problem of request/response service in Quantum Internet of things,this paper designs a key pool construction scheme of request/response service.By analyzing the construction and real-time state of the key pool,a key margin adaptive algorithm is proposed to realize the key supply in the network.The simulation results show that when the traffic load reaches 1000,the utilization ratio of key pools in the network is still about 0.6,and the proposed key margin adaptive algorithm balances the key utilization ratio of all key pools in the network.(3)Aiming at the key resource distribution problem of publish/subscribe service in Quantum Internet of things,this paper designs the key pool construction scheme of publish/subscribe service.By analyzing the characteristics of publish/subscribe service,an asynchronous push algorithm is proposed to supply the key resource.The simulation results show that when the service load is 200,the key pool of publish/subscribe service is constructed.Compared with the asynchronous optimization processing only in a certain stage,the success rate of push is increased by about 6%.The proposed asynchronous push algorithm improves the success rate of push subscription events in the network.