With the rapid development of the Internet of Things(IoT),there is an increasing need for interac-tion between different networks.In order to improve the level of interconnection,especially the interoper-ability of us...With the rapid development of the Internet of Things(IoT),there is an increasing need for interac-tion between different networks.In order to improve the level of interconnection,especially the interoper-ability of users/devices between different nodes is very important.In the IoT heterogeneous blockchain sce-nario,how to ensure the legitimacy of the chain and how to confirm the identity of cross-chain informa-tion users/devices become the key issues to be solved for blockchain interoperability.In this paper,we pro-pose a secure and trusted interoperability mechanism for IoT based on heterogeneous chains to improve the security of blockchain interoperability.In this mecha-nism,a primary sidechain architecture supporting au-thentication at both ends of the heterogeneous chain is designed.In addition,a distributed gateway archi-tecture is proposed for cross-chain authentication and protocol conversion.The security and performance analysis shows that our scheme is feasible and effec-tive in improving the security of cross-chain opera-tions in IoT.展开更多
Based on the official data modeling,this paper studies the transmission process of the Corona Virus Disease 2019(COVID-19).The error between the model and the official data curve is quite small.At the same time,it rea...Based on the official data modeling,this paper studies the transmission process of the Corona Virus Disease 2019(COVID-19).The error between the model and the official data curve is quite small.At the same time,it realized forward prediction and backward inference of the epidemic situation,and the relevant analysis help relevant countries to make decisions.展开更多
基金The research work is supported by the Shandong Provincial Key Research and Development Program(2021CXGC010107).
文摘With the rapid development of the Internet of Things(IoT),there is an increasing need for interac-tion between different networks.In order to improve the level of interconnection,especially the interoper-ability of users/devices between different nodes is very important.In the IoT heterogeneous blockchain sce-nario,how to ensure the legitimacy of the chain and how to confirm the identity of cross-chain informa-tion users/devices become the key issues to be solved for blockchain interoperability.In this paper,we pro-pose a secure and trusted interoperability mechanism for IoT based on heterogeneous chains to improve the security of blockchain interoperability.In this mecha-nism,a primary sidechain architecture supporting au-thentication at both ends of the heterogeneous chain is designed.In addition,a distributed gateway archi-tecture is proposed for cross-chain authentication and protocol conversion.The security and performance analysis shows that our scheme is feasible and effec-tive in improving the security of cross-chain opera-tions in IoT.
文摘Based on the official data modeling,this paper studies the transmission process of the Corona Virus Disease 2019(COVID-19).The error between the model and the official data curve is quite small.At the same time,it realized forward prediction and backward inference of the epidemic situation,and the relevant analysis help relevant countries to make decisions.
