Open Access

ARTICLE

CWoT-Share: Context-Based Web of Things Resource Sharing in Blockchain Environment

by Yangqun Li^1,2,*, Jin Qi^1,2, Lijuan Min^1,2, Hongzhi Yang^1,2, Chenyang Zhou^1,2, Bonan Jin³

1 School of Internet of Things, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China
2 Jiangsu Key Laboratory of Broadband Wireless Communication and Internet of Things, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China
3 Information VIII, University of Würzburg, Würzburg, 97074, Germany

* Corresponding Author: Yangqun Li. Email:

Computers, Materials & Continua 2022, 72(3), 5079-5098. https://doi.org/10.32604/cmc.2022.027281

Received 13 January 2022; Accepted 11 March 2022; Issue published 21 April 2022

Abstract

Web of Things (WoT) resources are not only numerous, but also have a wide range of applications and deployments. The centralized WoT resource sharing mechanism lacks flexibility and scalability, and hence cannot satisfy requirement of distributed resource sharing in large-scale environment. In response to this problem, a trusted and secure mechanism for WoT resources sharing based on context and blockchain (CWoT-Share) was proposed. Firstly, the mechanism can respond quickly to the changes of the application environment by dynamically determining resource access control rules according to the context. Then, the flexible resource charging strategies, which reduced the fees paid by the users who shared more resources and increased the fees paid by users who frequently used resources maliciously, were used to fulfill efficient sharing of WoT resources. Meanwhile, the charging strategies also achieve load balancing by dynamic selection of WoT resources. Finally, the open source blockchain platform Ethereum was used for the simulation and the simulation results show that CWoT-Share can flexibly adapt to the application environment and dynamically adjust strategies of resource access control and resource charging.

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Keywords

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