Research On Credible Authentication Based On Blockchain Technology For Broadband Access Network

The continuous growth of mobile applications has led to a surge in network traffic and rapid expansion of data volumes.The development of technologies such as the Internet of Things has brought about a large number of users,while the number of terminal devices in the network has also increased exponentially.Multi-user and complex service types not only exacerbate the network's need for the security of access terminal equipment,but also the performance of centralized authentication and storage under large data volume.In response to the above problems,blockchain technology provides an optimized method for reducing single-point pressure for centralized scenarios;distributed consensus mechanism and anonymous authentication technology bring good availability,security and reliability to distributed networks under the blockchain model respectively.This paper focuses on the security and usability challenges of terminal equipment authentication,explores the mechanism of blockchain-based authentication model in broadband access networks,and deeply studies the distributed consensus mechanism under the model;and discusses anonymous authentication for security performance enhancement.The algorithm focuses on solving the problem of trusted authentication technology.In order to guarantee network security performance,implement blockchain-based authentication architecture innovationally and improve system availability.The main contents and innovations of this paper are as follows:First,a blockchain-based broadband access network authentication model is designed.Focusing on the defects of trust and system availability under the current centralized network authentication architecture,the tasks and access modes of each functional entity based on the blockchain authentication model are mainly explored.It designed the basic data structure of the blockchain distributed ledger.The simulation results show that using the message queue mode of kafka,compared with the traditional synchronous processing mode,the delay and blocking rate are reduced by more than 10 times in a large traffic scenario.Secondly,based on the distributed availability,security and credibility requirements of the blockchain model,the basic process of consensus strategy is designed centered on the service scenario of device authentication,and the strategy is based on the demand for availability under Byzantine fault tolerance and network differentiation scenarios.The PBFT and raft algorithms of the trusted authentication service ensure that the distributed nodes in the blockchain network can accurately perform the device authentication function.Based on this,the performance indicators such as fault tolerance and availability of the algorithm are evaluated.Simulation results and experiments show that the raft algorithm can still maintain the normal authentication process in the network differentiation environment.In the single-point failure scenario,the PBFT algorithm can still achieve zero false positive rate for terminal ID authentication.Thirdly,for the access of IoT terminal devices,an anonymous authentication algorithm based on zero-knowledge proof is constructed.With consideration of the data structure and result of anonymous authentication,it designs a more flexible and efficient authentication strategy for the blockchain model,focusing on ensuring network security and optimizing node computing resources.Finally,the simulation platform is built to verify the performance of the algorithm in above aspects.