【Author】 Umar, Abdullah Kumar, Deepak Ghose, Tirthadip

【Source】APPLIED ENERGY

【影响因子】11.446

【主题类别】

区块链应用-实体经济-能源领域

【Abstract】The growing integration of distributed generations and battery storage equipped with smart meters paves a way to smartly manage the Distributed Energy Resources (DER) using a digital platform to improve the overall performance of the microgrid system. The deployment of distributed energy resources, particularly solar photovoltaic and wind generation, has transformed conventional power consumers into active prosumers. As a result of the expansion and digitalization of power distribution infrastructures, peer-to-peer (P2P) energy intratrading has evolved as a new paradigm in electricity trade in the community microgrid system. Blockchain is being used to encourage P2P energy intra-trading amongst prosumers, consumers, and Renewable Energy Sources (RES) owners because of its transparency, security, and speed in completing transactions. This P2P concept is further extended in this work to establish a self-sustained community microgrid system in energy trading with a case study to showcase the merits of blockchain technology in providing a secure and effective trading platform for mass users. As a result, the proposed work presents a solution for a secured energy management system that uses blockchain technology to create a decentralized microgrid energy market model that depicts P2P energy transactions with the incorporation of a battery storage system. Again, the microgrid P2P market settles the clearing price considering the probable response of customers when the price varies and incentive is paid to customers and prosumers to change the pattern of using of loads. According to the findings, end-users benefit from energy savings and self-sufficiency due to the combination of automated P2P trade and storage flexibility. Furthermore, a sort of crypto-currency "Cosmos (Atom)" is simulated in the P2P market model and published via the blockchain's mining mechanism. The proposed design framework presented in this paper has addressed the implementation of an effective energy management platform for developing a self-sustained microgrid system using distributed energy resources.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Smart contract; Microgrid; Peer -to -Peer (P2P) energy intra-trading; Battery Energy Storage System (BESS)

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 理论模型

【DOI】 10.1016/j.apenergy.2022.119544

【Author】 Pham, Son Duy Thao Thac Thanh Nguyen Hung Xuan Do

【Source】ENERGY ECONOMICS

【影响因子】9.252

【主题类别】

区块链治理-市场治理-数字货币

【Abstract】Despite the crucial role of thermal coal in generating the electricity used for cryptocurrency mining, the volatility linkage between the cryptocurrency and thermal coal markets is yet to be studied. We investigate the time-varying volatility connectedness between the two markets using their realized variances and semi-variances. Employing a multivariate Heterogeneous Autoregressive model, which accounts for both long memory and structural breaks in realized volatility time series, we find that China's thermal coal futures market is significantly dependent on the cryptocurrency market's volatility while the impact of the energy market on the cryptocurrency market is inconsequential. Moreover, the connectedness is asymmetrical in the sense that the bad volatility connectedness is greater than the good volatility connectedness. Finally, the determinants of the dynamic connectedness highlight the role of the production channel in fuelling the volatility transmission between these two markets.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Volatility connectedness; Asymmetry; Structural breaks; Cryptocurrencies; Thermal coal futures; Energy consumption

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1016/j.eneco.2022.106114

【Author】 Mo, Bin Meng, Juan Zheng, Liping

【Source】RESOURCES POLICY

【影响因子】8.222

【主题类别】

区块链治理-市场治理-数字货币

【Abstract】This paper analyses the time and frequency dynamics of connectedness between cryptocurrencies and commodity sectors. It supports that cryptocurrency plays a virtual character in the global financial markets. The total spillovers from cryptocurrencies to commodity markets alternate during the COVID-19 period. The time-frequency domain spillover results illustrate that both in the short-run and long-run, cryptocurrencies contribute to the system as the main transmitter in risk spillover. Besides, the net spillover alternatives with time in different frequencies. The portfolio results illustrate that the hedging effect of cryptocurrencies varies among commodity sectors before and after COVID-19. After COVID-19 the cryptocurrencies show a better hedging tool in our system, especially the hedging effect of cryptocurrencies on ENTR and PMTR sectors. Furthermore, investors need to take cryptocurrencies into the portfolio and adjust the weight of cryptocurrencies according to the alternative hedging effectiveness index, especially after COVID-19.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Connectedness; Portfolio diversification; Cryptocurrencies; Commodity markets; COVID-19

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1016/j.resourpol.2022.102731

【Author】 Liu, Jieli Zheng, Weilin Lu, Dingyuan Wu, Jiajing Zheng, Zibin

【Source】IEEE TRANSACTIONS ON COMPUTATIONAL SOCIAL SYSTEMS

【影响因子】4.747

【主题类别】

区块链技术-核心技术-共识机制

【Abstract】As one of the most popular blockchain systems, EOSIO has been widely used in decentralized applications (DApps). Compared with traditional proof-of-work (PoW)-based blockchain systems like Bitcoin, EOSIO achieves a high transaction throughput and an alleged decentralization with the Delegated Proof-of-Stake (DPoS) consensus protocol. However, recent reports claimed the existence of voting collusion and manipulation during the DPoS consensus procedure of EOSIO, which may greatly decline the decentralization degree, fault tolerance, and reliability of the whole system. In this article, we obtain data from up to 135 000 000 blocks of EOSIO and conduct a data-driven decentralization analysis. Specifically, we characterize the decentralization evolution of the two phases in DPoS, namely block producer election and block production. Moreover, we study the voters with similar voting behaviors and propose methods to discover abnormal mutual voting behaviors in EOSIO. The analysis results show how EOSIO gradually evolves from decentralization to oligopoly and our methods can effectively capture abnormal voting phenomena in the EOSIO, which can also provide important insights for the design and maintenance of other DPoS-based blockchains.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Production; Consensus protocol; Behavioral sciences; Voting; Oligopoly; Decentralized applications; Indexes; Blockchain; decentralization; delegated proof-of-stake (DPoS); EOSIO; network analysis

【发表时间】

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1109/TCSS.2022.3191350

【Author】 Wang, Shujuan Hu, Yingnan Qi, Guanqiu

【Source】SIMULATION MODELLING PRACTICE AND THEORY

【影响因子】4.199

【主题类别】

区块链应用-实体经济-交通领域

【Abstract】Internet of Vehicles (IoVs) works as the most advanced component of Intelligent Transportation Systems (ITSs). In IoVs, vehicles are able to communicate with nearby vehicles or RoadSide Units (RSUs). Traffic safety and efficiency can be provided by collecting and uploading real-time traffic information through vehicles, as well as broadcasting information by RSUs. However, there may be malicious vehicles in the network uploading false information, which will lead to serious traffic problems. To alleviate this problem, a trust management system based on blockchain technology is proposed in this paper. In this system, vehicles in the network firstly collect information about their surroundings and then upload valid information to nearby RSUs. To prevent malicious vehicles from uploading false messages, this paper designs a deep learning based verification model to calculate the trustworthiness of uploaded messages, and to further obtain the credibility scores of vehicles using the calculated results, and detect malicious vehicles accordingly. Moreover, a public blockchain framework is proposed and a Proof-Of -Trust (POT) consensus algorithm is designed. Vehicles are motivated to report true and valid information, and are penalized for uploading false data under this framework. Simulation results show that this mechanism can effectively detect malicious vehicles and motivate unfamiliar vehicles to upload true and reliable information to achieve trust management in the open and dynamic vehicular network environments.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】InternetofVehicles; Trustmanagement; Blockchain; Deeplearning

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实验仿真

【DOI】 10.1016/j.simpat.2022.102627

【Author】 Azbeg, Kebira Ouchetto, Ouail Andaloussi, Said Jai

【Source】EGYPTIAN INFORMATICS JOURNAL

【影响因子】4.195

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】Nowadays, healthcare is growing rapidly due to the large development of new technologies such as IoT and wearable devices. These devices are widely used to ensure remote patient monitoring. The current implementation is based on a client/server architecture. This raises several challenges regarding security and privacy that make healthcare systems more susceptible to several attacks. Therefore, health data are subject to strict regulatory and security requirements. To overcome these challenges and comply with security regulations, the adoption of a distributed architecture is a necessity. Due to its distributed nature and its security promises, Blockchain has a large interest as a sophisticated technology to solve the security challenges in IoT-based systems. Motivated by these factors, this work proposes BlockMedCare, a secure healthcare system that integrates IoT with Blockchain. The system is designed to support remote patient monitoring, especially when it comes to chronic diseases that require regular monitoring. We took into consideration three main parameters: security, scalability, and processing time. The security is ensured by using the re-encryption proxy combined with Blockchain to store hash data. Smart contracts are used for access control. To ensure Blockchain scalability, an off-chain database based on IPFS is used to store data. To speed up the data storage process, we use an Ethereum Blockchain-based proof of authority. As a use case, we applied the system to diabetes management and showed the execution results based on the system interfaces. The experimental system has demonstrated a good improvement of healthcare systems in terms of security face to the existing methods. (C) 2022 THE AUTHORS. Published by Elsevier B.V. on behalf of Faculty of Computers and Information, Cairo University.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Healthcare; Remote patient monitoring; Internet of things; Blockchain; Security; Proxy re-encryption; IPFS

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1016/j.eij.2022.02.004

【Author】 Khanna, Abhirup Sah, Anushree Bolshev, Vadim Burgio, Alessandro Panchenko, Vladimir Jasinski, Marek

【Source】SENSORS

【影响因子】3.847

【主题类别】

区块链技术-协同技术-云计算

【Abstract】Over the last couple of years, Blockchain technology has emerged as a game-changer for various industry domains, ranging from FinTech and the supply chain to healthcare and education, thereby enabling them to meet the competitive market demands and end-user requirements. Blockchain technology gained its popularity after the massive success of Bitcoin, of which it constitutes the backbone technology. While blockchain is still emerging and finding its foothold across domains, Cloud computing is comparatively well defined and established. Organizations such as Amazon, IBM, Google, and Microsoft have extensively invested in Cloud and continue to provide a plethora of related services to a wide range of customers. The pay-per-use policy and easy access to resources are some of the biggest advantages of Cloud, but it continues to face challenges like data security, compliance, interoperability, and data management. In this article, we present the advantages of integrating Cloud and blockchain technology along with applications of Blockchain-as-a-Service. The article presents itself with a detailed survey illustrating recent works combining the amalgamation of both technologies. The survey also talks about blockchain-cloud services being offered by existing Cloud Service providers.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】blockchain; cloud computing; decentralization; Blockchain-as-a-Service

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 观点阐述

【DOI】 10.3390/s22145238

【Author】 Benigno, Pierpaolo Schilling, Linda M. Uhlig, Harald

【Source】JOURNAL OF INTERNATIONAL ECONOMICS

【影响因子】3.712

【主题类别】

区块链治理-市场治理-数字货币

【Abstract】We analyze a two-country economy with complete markets, featuring two national currencies as well as a global (crypto)currency. If the global currency is used in both countries, the na-tional nominal interest rates must be equal and the exchange rate between the national cur-rencies is a risk-adjusted martingale. Deviation from interest rate equality implies the risk of approaching the zero lower bound or the abandonment of the national currency. We call this result Crypto-Enforced Monetary Policy Synchronization (CEMPS). If the global currency is backed by interest-bearing assets, additional and tight restrictions on monetary policy arise. Thus, the classic Impossible Trinity becomes even less reconcilable.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Currency competition; Cryptocurrency; Impossible trinity; Exchange rates; Uncovered interest parity; Independent monetary policy

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1016/j.jinteco.2022.103601

【Author】 Ivaninskiy, Ilya Ivashkovskaya, Irina

【Source】EURASIAN BUSINESS REVIEW

【影响因子】3.574

【主题类别】

区块链治理-市场治理-市场分析

【Abstract】This paper explores the implications of digitalization and business model innovation for the principal-agent conflict. Continuous digital transformation has recently become a feature sine qua non for companies. It is also stimulating business model innovation resulting in the growing adoption of ecosystem-based models. These trends may have significant implications for the principal-agent relationship, essential for understanding value creation by a firm. In order to analyze the impact of digital transformation, we use blockchain technology as a proxy. To measure the potential impact on the principal-agent conflict, we study management and shareholder-sponsored proposals at annual meetings. The level of shareholder involvement in governance is measured based on the number of shareholder-sponsored proposals received. In addition, we measure shareholder support for management-sponsored proposals. A sample of 2481 NYSE, Nasdaq and AMEX-traded firms for the period 2015-2019 is used. First of all, we show that digitalization per se has a mitigating impact on the agency conflict. Shareholders become more active, albeit not more hostile towards management. Secondly, we have identified the strongest impact in such sectors as information technology, communications, finance, and healthcare. These are the most significantly impacted by ecosystem-based business model innovation. We conclude that digitalization and ecosystem-based business models are mutually reinforcing in mitigating the principal-agent conflict.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Corporate governance; Digital transformation; Ecosystems; Corporate voting; Shareholder activism

【发表时间】

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1007/s40821-022-00209-0

【Author】 Pereira Lamela, Manuel Rodriguez-Molina, Jesus Martinez-Nunez, Margarita Garbajosa, Juan

【Source】IEEE ACCESS

【影响因子】3.476

【主题类别】

区块链治理-市场治理-市场分析

【Abstract】The possibilities that Distributed Ledger Technologies (DLTs) offer for cooperation, development, and achievement of the Sustainable Development Goals (SDGs) are remarkable. This is because DLTs enable several key features, such as sharing complete information about every data transaction in the distributed system that participants belong to, the immutability of the recorded data transactions, or consensus among what data can be regarded as true, of great usefulness for the implementation of the SDGs. As far as developing countries are concerned, this information could be useful in trading locally produced goods, as it could enhance the reputation and profitability of Small-Scale Producers (SSPs). Unfortunately, it is rare to find a digitalized marketplace that has been specifically implemented for this application domain. This paper puts forward a blockchain-based marketplace that makes use of Smart Contracts and offers information about how the sold goods were produced and can be traced to their very origin. Besides, cloud computing has been conceived to be used in this development from the beginning to reduce the computational resources required by end user operations. An implementation with cloud computing facilities, software components running on the Ethereum blockchain and a web front end have been tested with satisfactory performance results.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchains; Developing countries; Sustainable development; Costs; Profitability; Cloud computing; Supply chains; Distributed computing; sustainable development; peer-to-peer computing

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实验仿真

【DOI】 10.1109/ACCESS.2022.3194511

【Author】 Khan, Abdullah Ayub Wagan, Asif Ali Laghari, Asif Ali Gilal, Abdul Rehman Aziz, Izzatdin Abdul Talpur, Bandeh Ali

【Source】IEEE ACCESS

【影响因子】3.476

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】Owing to the sensitive nature of healthcare data, the aforementioned approach to transferring patient data to central servers creates serious security and privacy issues. In addition, blockchain distributed ledger technology has introduced immutable storage and decentralized data management capability, which handles a large number of distributed nodes of E-Healthcare transactions via a serverless network, but in a limited manner because of blockchain-enabled resources. In this scenario, the medical industries are concerned about constituting an innovation in health information preservation and exchanging service delivery protocols without the connectivity of an untrusted third-party infrastructure. In this study, we proposed a blockchain hyperledger fabric-enabled consortium architecture called BIoMT, which provides security, integrity, transparency, and provenance to health-related transactions and exchanges sensitive clinical information in a serverless peer-to-peer (P2P) secure network environment. A consensus is designed and created to reduce the rate of blockchain resource constraints on the Internet of Medical Things (IoMT). The privacy of individual health transactions before sharing is protected using the NuCypher Re-Encryption mechanism, which increases security and provides medical ledger integrity and transparency. Smart contracts are created and deployed to automate device registration, exchange transactions, and ledger preservation in immutable storage (filecoin) after cross verification and validation. The experimental results show that the proposed BIoMT reduces the computational cost by 26.13%, and the robust medical node generation increases to 60.37%. Thus, only 31.79% and 74.21% of IoMT-related information and serverless P2P network usage are maintained and saved, respectively.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchains; Security; Privacy; Distributed ledger; Medical services; Computer architecture; Peer-to-peer computing; Blockchain hyperledger fabric; smart contract; e-healthcare; privacy and security; Internet of Medical Things (IoMT); consortium network

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 理论模型

【DOI】 10.1109/ACCESS.2022.3194195

【Author】 Kang, Peng Yang, Wenzhong Ding, Tiantian

【Source】IEEE ACCESS

【影响因子】3.476

【主题类别】

区块链技术-核心技术-分布式存储

【Abstract】The digitization of the national economy and the development of the national network have rapidly increased the amount of data, and research in content storage and forwarding is significant. The existing methods of storing certificates and distributing file content entirely rely on the judgment made by the router, and the forwarding process does not consider the security and legality of the data; at the same time, the traditional peer-to-peer (P2P) forwarding network files cannot be effectively reused, and additional security mechanisms are introduced. It affects the performance of the network itself. To improve the overall network performance, optimize the file forwarding process, and ensure the security of content and the verification of historical information, this paper proposes a method for document content storage and distribution that integrates blockchain technology and Named Data Network (NDN). The advantages of data signature encryption, reverse path forwarding of content, and flexible routing improves the overall performance of the forwarding network. Combined with blockchain decentralization technology, the documents and transaction processes can be stored on the chain to ensure the actual security of the forwarding process. In addition, this paper restricts the forwarding process in the NDN network without making any judgments through smart contract rules to ensure the security of confidential files during the forwarding process and, at the same time, limit the forwarding scope of irrelevant junk files in the private network. Finally, experiments prove that the method proposed in this paper can effectively improve the network's overall performance, optimize the forwarding process, and make rule judgments on the forwarding process of specific files to ensure the security of files.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchains; Smart contracts; Security; Routing; Licenses; IP networks; Process control; Blockchain; decentralization; NDN network; smart contracts; routing forwarding

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1109/ACCESS.2022.3178992

【Author】 Albalwy, F. McDermott, J. H. Newman, W. G. Brass, A. Davies, A.

【Source】PHARMACOGENOMICS JOURNAL

【影响因子】3.245

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】The successful implementation of pharmacogenetics (PGx) into clinical practice requires patient genomic data to be shared between stakeholders in multiple settings. This creates a number of barriers to widespread adoption of PGx, including privacy concerns related to the storage and movement of identifiable genomic data. Informatic solutions that support secure and equitable data access for genomic data are therefore important to PGx. Here we propose a methodology that uses smart contracts implemented on a blockchain-based framework, PGxChain, to address this issue. The design requirements for PGxChain were identified through a systematic literature review, identifying technical challenges and barriers impeding the clinical implementation of pharmacogenomics. These requirements included security and privacy, accessibility, interoperability, traceability and legal compliance. A proof-of-concept implementation based on Ethereum was then developed that met the design requirements. PGxChain's performance was examined using Hyperledger Caliper for latency, throughput, and transaction success rate. The findings clearly indicate that blockchain technology offers considerable potential to advance pharmacogenetic data sharing, particularly with regard to PGx data security and privacy, large-scale accessibility of PGx data, PGx data interoperability between multiple health care providers and compliance with data-sharing laws and regulations.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】

【发表时间】

【收录时间】2022-08-20

【文献类型】 理论模型

【DOI】 10.1038/s41397-022-00285-5

【Author】 Hassan, M. Kabir Hasan, Md Bokhtiar Halim, Zairihan Abdul Maroney, Neal Rashid, Md Mamunur

【Source】NORTH AMERICAN JOURNAL OF ECONOMICS AND FINANCE

【影响因子】3.136

【主题类别】

区块链治理-市场治理-数字货币

【Abstract】We analyze the dynamic spillover impact of cryptocurrency environmental attention (ICEA) on three asset classes: commodities, green bonds (GBs), and environment-related stocks. Our wavelet-based analysis suggests that ICEA is sharply escalated after the first quarter of 2021. During this period of intense attention, only the soybean commodity and Solactive GB tend to move positively and negatively with ICEA, respectively. Accordingly, the clean energy, sustainability, and Environmental, Social, and Governance (ESG) stock indices are positively associated with ICEA during 2018-2019 at the medium frequency bands. In most periods and frequency domains, most commodities, GBs, and environment-related stocks are not strongly linked to ICEA. Moreover, Diebold and Yilmaz's (2014) spillover estimations signify no strong spillover effect of ICEA on the asset classes considered in this study. These findings are further corroborated by the wavelet-based Granger causality analysis. Moreover, our quantile regression (QR) estimations suggest that most assets are adversely influenced by ICEA, depending on the market conditions. Our research conveys some novel and vital policy ramifications to both investors and policymakers.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Cryptocurrency environmental attention (ICEA) index; Spillovers; Commodity markets; Green bond markets; Environment-related stocks

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1016/j.najef.2022.101700

【Author】 Goswami, Bidisha Choudhury, Hiten

【Source】JOURNAL OF NETWORK AND SYSTEMS MANAGEMENT

【影响因子】2.198

【主题类别】

区块链技术-协同技术-物联网

【Abstract】5G cellular network is becoming a preferred technology for communication in deployments of the Internet of Things (IoT). However, 5G cellular network is essentially designed for cellular communication. Therefore, there are several areas in IoT over 5G cellular network, where there is scope for further improvement. One such area is development of efficient security mechanisms for authentication of the IoT devices. The authentication protocol currently being used in 5G cellular network maintains the security credentials of the devices at the home network in a centralised manner. Therefore, every time a device needs to be authenticated, the home network has to be communicated. However, considering the IoT scenario where there is large scale deployment of devices, frequent communication with the home network may result in increased communication latency. In this paper, we propose an authentication scheme where security credentials of the IoT devices are stored in a decentralized way using blockchain technology. The scheme is found to be safe and secured, through an informal and a formal security analysis using scyther tool. The smart contracts used in the scheme, when deployed in the ethereum test network, are also found to be efficient. Through experimental performance analysis, the scheme is found to have attained reduced communication latency compared to the existing protocols.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Internet of things; 5G cellular network; Blockchain; Authentication; Communication latency

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1007/s10922-022-09680-6

【Author】 Wang, Zhihua Xu, Yingheng Liu, Jiahao Li, ZhenYu Li, Zeminghui Jia, Hongyong Wang, Dinghua

【Source】WIRELESS COMMUNICATIONS & MOBILE COMPUTING CCF-C

【影响因子】2.146

【主题类别】

区块链应用-实体经济-交通领域

【Abstract】With the substantial increase in the number of smart cars, vehicular ad hoc network (VANET), where data can be shared between vehicles to enrich existing vehicle services and improve driving safety, is gaining more and more attention, thus creating a more efficient intelligent transportation system. Moreover, the in-depth research and development of 6G and AI technology further strengthen the interconnection of various entities in VANET and can realize edge intelligence, which fundamentally enhances the efficiency of data sharing. However, reliable transmission and secure storage of data have always been a great challenge in data sharing. Although some schemes store shared data in the blockchain, most of the consensus mechanisms they use employ full nodes to verify signature information and timestamps, which cannot effectively judge the reliability of the shared data itself. Some other schemes use scoring mechanisms to evaluate data uploaded by vehicles, but these methods can be affected by network hardware failures and cannot effectively detect duplicate data. In addition, participants' privacy may also be disclosed in the process of data sharing, such as participants' location and identity information. Therefore, to address the above problems, this paper proposes a data sharing scheme in 6G-VANET, which can not only ensure the reliability and security of shared data but also protect the privacy of participants. Firstly, a consortium chain is adopted to realize the secure storage of shared data in 6G-VANET, which meets the requirements of tamper-proof and traceability of data. Secondly, a voting consensus mechanism is designed in combination with smart contract to ensure the reliability of data. Thirdly, the trained word2vec natural language processing model is deployed to edge nodes to realize edge intelligence, effectively eliminate the duplicate shared data, and enhance storage efficiency. Finally, a participant privacy protection mechanism is designed using the Private Set Intersection (PSI) protocol, and a secure and efficient data sharing scheme is finally realized. The effectiveness of the proposed scheme is demonstrated by security analysis and experimental evaluation. The experimental results show that the time and space overhead of blockchain can meet the practical requirements, and the proposed PSI protocol of large-scale vehicles can be completed in a short time.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1155/2022/5031112

【Author】 Rizwan, Ali Karras, Dimitrios A. Kumar, Jitendra Sanchez-Chero, Manuel Taboada, Marlon Martin Mogollon Altamirano, Gilder Cieza

【Source】MATHEMATICAL PROBLEMS IN ENGINEERING

【影响因子】1.430

【主题类别】

区块链技术-协同技术-物联网

【Abstract】Recent technological developments indicate possible advancements in supply chain management (SCM). These innovations have attracted a lot of interest from industries including logistics, manufacturing, packaging, and transportation. The conventional systems, however, use centralised servers to control all operations, including the exchange of raw materials, making orders, dealing with buyers and sellers, and updating orders. The network's supply chain may thus be insecure as a result of every activity being routed via centralised servers. The danger is additionally increased by a number of difficulties, including scalability, data integrity, security, and availability. Block chain technology may be used in these circumstances to decentralise transaction processing and eliminate the need for a centralised controller. In this approach, the performance of the resource-constrained supply chain network is improved by the effective use of edge computing and priority data access. The Intelligent K-Means (IKM) clustering algorithm is suggested across the edge nodes in the current research to categorise the priority level of each piece of data. This classifier determines if the edge node has received data that is high priority or low priority. Low priority data is recorded in the log files for future data analysis. Then, to allow safe data flow in the open block chain while excluding outside parties, the High Priority Access based Smart Contract (HPASC) technique is deployed. The whole experiment was conducted in a Python environment, and variables including scalability, reaction time, throughput, and accuracy were studied. Current systems' constrained block sizes and fork creation lengthen the time transactions must wait before being processed. The suggested methodology is quicker and uses less storage space than current block chain systems. The results show that the suggested approach works better than current blockchain technology to raise the standard of supply chain management.

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【Keywords】

【发表时间】2022

【收录时间】2022-08-20

【文献类型】 实证数据

【DOI】 10.1155/2022/9679050