With the rapid development of the Internet of things (IoT), it has brought great convenience for people's life. However, the security and privacy of IoT still face a major challenge. To remedy these issues, in this study, the authors first introduce the three-tier architecture of IoT and analyse the corresponding security problems of each layer, then they discussed the compatibility between IoT and blockchain. Secondly, they propose a new, distributed blockchain-based security architecture of IoT, which rely on gateway nodes of perception layer to secure data storage and sharing, and use middleware servers to analyse and process data. Finally, they adopt game theory to model and analyse their designed scheme. The results demonstrate that their scheme is a safe and deployable framework for IoT data security and privacy.

中文翻译：

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物联网中基于分布式区块链的隐私保护和数据安全框架研究

随着物联网（IoT）的快速发展，它给人们的生活带来了极大的便利。但是，物联网的安全性和隐私性仍然面临着重大挑战。为了解决这些问题，在本研究中，作者首先介绍了物联网的三层体系结构并分析了每层的相应安全性问题，然后他们讨论了物联网与区块链之间的兼容性。其次，他们提出了一种新的，基于分布式区块链的物联网安全架构，该架构依靠感知层的网关节点来保护数据的存储和共享，并使用中间件服务器来分析和处理数据。最后，他们采用博弈论对设计方案进行建模和分析。结果表明，他们的方案是用于物联网数据安全和隐私的安全且可部署的框架。