一种基于哈希图的移动自组网区块链模型  

Blockchain model for mobile Ad hoc networks based on Hashgraph

作　　者：宫在为 黄建华[1] 顾彬 宁宇豪 张文韬 Gong Zaiwei;Huang Jianhua;Gu Bin;Ning Yuhao;Zhang Wentao(School of Information Science&Engineering,East China University of Science&Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学信息科学与工程学院,上海200237

出　　处：《计算机应用研究》2023年第9期2582-2589,共8页Application Research of Computers

基　　金：国家自然科学基金资助项目(62076094)。

摘　　要：针对移动自组网存在的网络覆盖范围有限、连接不稳定、节点协同时易遭受恶意攻击等问题,结合区块链技术增加数据的安全性与完整性,提出一种基于哈希图的移动自组网区块链模型。首先,提出一种分簇算法,将节点划分为不同的簇,选举簇首统计簇内节点数量,并写入事件中进行传播,以保证共识的顺利进行;其次,对Gossip协议进行优化,提出FS-Gossip(fast spreading Gossip)协议,减少邻居节点选择的盲目性,提高传播效率,增大新入簇节点的检测速度;最后,改进哈希图中复杂的共识计算,并提出一种基于簇首优先的传播机制,在簇内节点应用轻量级共识与传播机制,以加快事件确认速度,降低时延,提升吞吐量。仿真实验结果验证了模型在时延、吞吐量与传播效率方面的优势。Aiming at the problems of mobile Ad hoc networks,such as limited network coverage,unstable connection,and vulnerability to malicious attacks when nodes cooperate,this paper combined with blockchain technology to increase the security and integrity of data and proposed a blockchain model for mobile Ad hoc networks based on Hashgraph.Firstly,this paper designed a clustering algorithm,which divided the nodes into different clusters,selected cluster heads to count the number of nodes in the cluster,and wrote them to events for propagation to ensure the smooth progress of consensus.Secondly,it optimized the Gossip protocol,and proposed the FS-Gossip(fast spreading Gossip)protocol,which reduced the blindness of neighbor node selection,improved the propagation efficiency,and increased the detection speed of new cluster nodes.Finally,it improved the complex consensus calculation in hashgraph,and proposed a propagation mechanism based on cluster head priority.The lightweight consensus and propagation mechanism was applied to nodes in the cluster to speed up event confirmation,reduce delay,and improve throughput.The simulation results verify the advantages of the model in terms of delay,throughput and propagation efficiency.

关 键 词：区块链 MANETS 哈希图 GOSSIP协议 分簇 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]