The wireless sensor networks are very vulnerable environments for network attacks, so that they require appropriate security measures must be implemented. The blockchain technology is an effective way of protecting data handled and possessed by the wireless sensor networks. Many of the existing approaches are following conventional security approaches. But such traditional approaches are very prone to failures of the nodes more often. In this paper, a novel efficient approach for authentication in wireless sensor networks that uses blockchain technology for security. The nodes of the wireless sensor networks are from IoT network and they are being formulated by the base station, cluster heads and normal sensor nodes. The building of a blockchain network will shape a hierarchical blockchain model, including small chain and global chain, among various network nodes. Nodes in this hybrid model in different communication situations, identity secure connection is realized, normal node identification user authentication is in the blockchain network, local block chain technology and selected cluster node identification verification is done. Analyzation of the protection and results demonstrate that there is robust protection and higher results in the system. The experimental results are showing that the computational capability of over 300 bytes per phase has been achieved using the proposed approach.

无线传感器网络是非常容易受到网络攻击的环境，因此它们需要采取适当的安全措施。区块链技术是保护无线传感器网络处理和拥有的数据的有效方法。许多现有方法都遵循常规安全方法。但是，这种传统方法更容易发生节点故障。在本文中，一种使用区块链技术实现安全性的无线传感器网络身份验证的新颖有效方法。无线传感器网络的节点来自IoT网络，由基站，簇头和常规传感器节点制定。区块链网络的建设将塑造分层的区块链模型，包括小型链和全球链，在各个网络节点之间。该混合模型中的节点在不同的通信情况下，实现身份安全连接，在区块链网络中进行常规节点识别用户身份验证，采用本地区块链技术并完成了所选集群节点的身份验证。对保护和结果的分析表明，该系统具有强大的保护功能和更高的结果。实验结果表明，使用所提出的方法已经实现了每相超过300字节的计算能力。本地区块链技术和所选集群节点标识验证已完成。对保护和结果的分析表明，该系统具有强大的保护功能和更高的结果。实验结果表明，使用所提出的方法已经实现了每相超过300字节的计算能力。完成本地区块链技术和所选集群节点的身份验证。对保护和结果的分析表明，该系统具有强大的保护功能和更高的结果。实验结果表明，使用所提出的方法已经实现了每相超过300字节的计算能力。