【Author】
Wang, Chuansheng; Tan, Xuecheng; Yao, Cuiyou; Gu, Feng; Shi, Fulei; Cao, Haiqing
【Abstract】Single point of failure and node attack tend to cause instability in the centralized Internet of Things (IoT). Combined with blockchain technology, the deficiency of traditional IoT architecture can be effectively alleviated. However, the existing blockchain consensus mechanism still has the problems of forks and wasting of computing power. Therefore, this paper proposes a new framework based on a two-stage credit calculation to handle these problems. Notably, the nodes are selected through the model, and these nodes will compete on the chain according to the behavior of participating in the creation of the block. Then, a comparative simulation with the existing consensus mechanism proof of work (PoW) is presented. The results show that the proposed framework can quickly eliminate malicious nodes, maintain the overall security of the blockchain and reduce consensus delay.
【Keywords】blockchain; IoT; rrust model; PoT
【摘要】单点故障和节点攻击往往会导致集中式物联网 (IoT) 不稳定。结合区块链技术，可以有效缓解传统物联网架构的不足。但是，现有的区块链共识机制仍然存在分叉和浪费算力的问题。因此，本文提出了一种基于两阶段信用计算的新框架来处理这些问题。值得注意的是，节点是通过模型选择的，这些节点将根据参与创建区块的行为在链上竞争。然后，提出了与现有共识机制工作量证明（PoW）的比较模拟。结果表明，所提出的框架可以快速消除恶意节点，维护区块链的整体安全性并减少共识延迟。
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