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

作　　者：Yangqun Li Jin Qi Lijuan Min Hongzhi Yang Chenyang Zhou Bonan Jin 

机构地区：[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

出　　处：《Computers, Materials & Continua》2022年第9期5079-5098,共20页计算机、材料和连续体（英文）

基　　金：This study is funded by“The National Natural Science Foundation of China(No.61972211,No.61771258)”.

摘　　要：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.

关 键 词：Web of things resource sharing smart contract CONTEXT billing strategy 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术]