| 摘要: |
| 由于物联网设备的资源受限，当前智慧城市相关应用系统，在抵御以物联网设备为目标的恶意攻击时存在局限性，难以提供安全可靠的服务。本文设计了基于区块链的智慧城市边缘设备管理架构，将区块链技术引入智慧城市建设研究中，利用区块链分布式架构和去中心化的思想，实现感知数据的可信收集和存储，并基于该架构提出了一种新的基于信誉的PoW共识算法，为物联网设备提供信任机制，该算法极大的增加了由物联网设备端发起的恶意攻击的成本，有效的预防了设备的恶意攻击行为，实现了边缘设备行为的可信管理。基于所提方法实现的智慧城市应用案例验证了其可行性，有效防范了来自节点的恶意攻击，增强了系统的信息安全性。 |
| 关键词: 智慧城市 共识算法 区块链 边缘设备 |
| DOI：10.19363/J.cnki.cn10-1380/tn.2021.07.09 |
| Received:August 22, 2020Revised:November 12, 2020 |
| 基金项目:得到国家自然科学基金（No.61702354，No.61876121）；苏州科技大学科研项目（No.XKZ2017004）；江苏省物联网移动互联技术工程重点实验室开放课题（No.JSWLW2017004）；研究生科研创新计划项目（No.SKSJ18_012，No.SJCX19_0963）资助。 |
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| Blockchain-based Approach for Trustworthy Management of Edge Device in Smart City |
| SHI Pengzhan,DAI Huan,CHEN Jie,CHEN Ruyu |
| Suzhou University of Science and Technology, Suzhou 215000, China;East China Normal University, Shanghai 200241, China |
| Abstract: |
| Due to the constrained resources of edge device, currently smart city applications with centralized model are vulnerable to malicious attacks from internal, which can hardly provide high-confidence services. This paper designs a blockchain-based smart city framework, which introduces the distributed architecture and decentralization of blockchain into smart city to realize the trustworthy collection and storage of sensor data. Based on the framework, a novel credit-based PoW consensus algorithm is also proposed to provide the trustworthy mechanism for edge device. By increasing the cost of malicious attack, the algorithm can prevent malicious attacks launched by edge devices and implement trustworthy management of the behavior of edge device. The case study of the proposed approaches in smart city scenario shows its feasibility and effectiveness, which can effectively prevent malicious attacks from edge device and enhance the information security of the system. |
| Key words: smart city consensus mechanism blockchain edge device |
