A Blockchain-Based Authentication and Service Provision Scheme for Internet of Things

The 6G network will provide integrated ubiquitous coverage of air, space, ground and sea, and support the full connection of a large number of heterogeneous terminals. This kind of open network and access brings great security risks to the communication network. Therefore, security issues have become an important factor in the widespread promotion of Internet of Things (IoT) applications. This paper proposes a secure endogenous wireless access network architecture based on blockchain, including communication plane and blockchain plane, the later plane includes blockchain networks and their applications. Based on this architecture, a unified identity authentication framework is proposed, which is based on blockchain technology to manage the identity certificates of entities in the network and supervise the authority. Based on this framework, a distributed identity authentication scheme, a service discovery and provision scheme in the IoT combined with smart contracts are given. Numerical simulation results demonstrate that the proposed schemes outperform existing algorithm in terms of communication overhead and time consumption.