摘要
物联网中不同系统间的认证已成为急需解决的问题,虽然通过单个区块链的分布式、去中心化的优势可以实现对物联网设备的可信访问和管理,但是区块链单链结构存在可扩展性低、吞吐量低的特点,导致设备认证效率低下。针对上述问题,提出基于主从链结构的物联网设备身份认证网络结构,引入信誉评估机制,通过选择信誉值高的共识节点并优化共识阶段,改进实用拜占庭共识(PBFT)算法,获得新的共识算法L-PBFT;设计认证智能合约,实现跨链的可信认证和可信交互。通过仿真实验对比L-PBFT算法和PBFT算法,结果表明L-PBFT的吞吐量比PBFT增加了44%,同时减少了拜占庭节点率,降低了认证请求的时延,提高了设备认证效率。
At present,with the rapid development of the Internet of Things,the world is moving towards the Internet of Everything,so in the face of a huge Internet of Things application scenarios,the authentication between different systems has become an urgent problem to be solved,although through the distributed,decentralized advantages of a single blockchain trusted access and management of Internet of Things devices can be achieved,the blockchain single-chain structure has low scalability and low throughput led to low authentication efficiency.Aiming at the above problems,this paper proposes the identity authentication network structure of IoT devices based on the master-slave chain structure,introduces the reputation evaluation mechanism,improves the practical byzantine consensus algorithm(PBFT)by selecting consensus nodes with high reputation values and optimizing the consensus stage to obtain a new consensus algorithm L-PBFT),designs authentication smart contracts,and realizes cross-chain trusted authentication and trusted interaction.Through the comparative analysis of L-PBFT and PBFT algorithms,the throughput of L-PBFT increases by 44%compared with that of PBFT,while decreasing the Byzantine node rate,reducing the delay of authentication requests,and improving the efficiency and stability of certification.
作者
于宝洋
张文波
郝颖
YU Baoyang;ZHANG Wenbo;HAO Ying(Shenyang Ligong University,Shenyang 110159,China;School of Computer and Information Engineering,Guangdong Songshan Polytechnic,Shaoguan 512126,China)
出处
《沈阳理工大学学报》
CAS
2023年第2期15-21,共7页
Journal of Shenyang Ligong University
基金
辽宁省教育厅高等学校基本科研项目(面上重点项目)(LJKZ0241)。
关键词
物联网
区块链
共识算法
信誉评估
跨链认证
internet of things
blockchain
consensus algorithm
reputation assessment
cross-chain authentication
作者简介
于宝洋(1997—),男,硕士研究生;通信作者:张文波(1973—),男,教授,研究方向:物联网、网络安全。
