【Author】 Suhail, Sabah Malik, Saif Ur Rehman Jurdak, Raja Hussain, Rasheed Matulevicius, Raimundas Svetinovic, Davor
【影响因子】11.245
【主题类别】
区块链应用-实体经济-交通领域
【Abstract】The complexity of cyberattacks in Cyber-Physical Systems (CPSs) calls for a mechanism that can evaluate critical infrastructures' operational behaviour and security without affecting the operation of live systems. In this regard, Digital Twins (DTs) provide actionable insights through monitoring, simulating, predicting, and optimizing the state of CPSs. Through the use cases, including system testing and training, detecting system misconfigurations, and security testing, DTs strengthen the security of CPSs throughout the product lifecycle. However, such benefits of DTs depend on an assumption about data integrity and security. Data trustworthiness becomes more critical while integrating multiple components among different DTs owned by various stakeholders to provide an aggregated view of the complex physical system. This article envisions a blockchain-based DT framework as Trusted Twins for Securing Cyber-Physical Systems (TTS-CPS). With the automotive industry as a CPS use case, we demonstrate the viability of the TTS-CPS framework through a proof of concept. To utilize reliable system specification data for building the process knowledge of DTs, we ensure the trustworthiness of data-generating sources through Integrity Checking Mechanisms (ICMs). Additionally, Safety and Security (S&S) rules evaluated during simulation are stored and retrieved from the blockchain, thereby establishing more understanding and confidence in the decisions made by the underlying systems. Finally, we perform formal verification of the TTS-CPS. (c) 2022 The Author(s). Published by Elsevier B.V. CC_BY_4.0
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Anomaly detection; Blockchain; Cyber-Physical Systems (CPSs); Digital Twins (DTs); Industrial Control Systems (ICSs); Internet of Things (IoT); Industry 4; 0
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 理论性文章
CCF-C
【影响因子】8.665
【主题类别】
区块链应用-实体经济-供应链
【Abstract】The use of blockchain technology leads to improved operations and supply chain (SC) integration. Moreover, identifying and evaluating the blockchain technology application criteria in the logistics system is a Multi- Criteria Decision-Making (MCDM) challenge that requires taking into account the perspectives of experts with varying degrees of SC expertise. The purpose of this paper is to propose a novel group decision-making method based on the best-worst method (BWM) to evaluate the criteria of implementing blockchain technology in the SC. The proposed approach provides a mechanism whereby opinions of decision-makers (DMs) are aggregated in nine steps, first. Then, weights of criteria are determined using BWM individual decision-making models. Moreover, two individual decision-making methods called nonlinear goal programming based BWM II (NGPBWM II) and linear goal programming based BWM II (LGPBWM II) are extended in this study, which can be adopted in both individual and group decision-making problems. The NGPBWM II and LGPBWM II methods can be used for both individual and group decision-making. This study proposes a novel group decision-making framework. The framework has fewer constraints than previous group BWM models and can consider different best (worst) criteria by different DMs. The effectiveness of the proposed methodology is investigated employing eight numerical examples. The results reveal the high accuracy of the NGPBWM II in all eight ex-amples. Therefore, a combination of the proposed group decision-making method and NGPBWM II is applied in a real case to evaluate the application criteria of the blockchain technology in the automotive industry SC, which was a new application for using blockchain technology in SC.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain MCDM; Group decision-making; Goal programming; Best-worst method
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 实证性文章
【影响因子】8.634
【主题类别】
区块链应用-实体经济-能源领域
【Abstract】We propose a motivational local trading framework with a 2-round auctioning system and a novel settlement approach to stimulate local transactions on the electricity surplus of a small community. Two auction price systems and several settlement mechanisms are formulated and compared to assess local trading profit and local market efficiency. We also implement a SC-based mechanism that embeds the auction results and rules to increase trust in the bidding and settlement processes. Our simulations use actual consumption and generation data from 11 houses with smart appliances and self-generation capabilities. We show that auctions, if used consistently, can help the development of a local trade by encouraging people to buy from their neighbors and invest in more generating facilities, knowing that there is a local market on which to rely. Compared to the hybrid -Pay-as-Bid (PaB) in the 1st round plus Uniform Price (UP) in the 2nd round -approach, the pure 2-round UP auction was shown to decrease trading with the retailer by 7.5%. The market indicators are quite similar for the two pricing methods, whereas the proposed settlement mechanism reduces the buyers' payments by 7% and increases sellers' encashments by around 8%.(c) 2022 Elsevier Ltd. All rights reserved.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Smart contracts; Local market; Peer-to-peer trading; Pricing system; Auction; Settlement
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 实证性文章
【Author】 Ahmed, Nadeem Michelin, Regio A. Xue, Wanli Putra, Guntur Dharma Ruj, Sushmita Kanhere, Salil S. Jha, Sanjay
CCF-C
【影响因子】7.574
【主题类别】
区块链技术-核心技术-加密算法
【Abstract】The infection rate of COVID-19 and the rapid mutation ability of the virus has forced governments and health authorities to adopt lockdowns, increased testing, and contact tracing to reduce the virus's spread. Digital contact tracing has become a supplement to the traditional manual contact tracing process. However, although several digital contact tracing apps are proposed and deployed, these have not been widely adopted due to apprehensions surrounding privacy and security. In this paper, we present a blockchain-based privacy -preserving contact tracing protocol,"Did I Meet You" (DIMY). The protocol provides full-lifecycle data privacy protection on the devices as well as the back-end servers to address most of the privacy concerns associated with existing protocols. We have employed Bloom filters to provide efficient privacy-preserving storage and have used the Diffie-Hellman key exchange for secret sharing among the participants. We show that DIMY provides resilience against many well-known attacks while introducing negligible overheads. DIMY's footprint on the storage space of clients' devices and back-end servers is also significantly lower than other similar state-of-the-art apps.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】COVID-19; Contact tracing; Bloom filter; Blockchain; Privacy; Security
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 理论性文章
【影响因子】5.659
【主题类别】
区块链技术-核心技术-智能合约
【Abstract】The problem of efficient energy consumption in buildings is becoming increasingly prominent with the rapid development of the global economy. The application of distributed energy introduces new solutions for energy conservation in buildings. Hence, residents can use and store clean energy to reduce the amount of electricity they buy from the grid, thereby reducing energy consumption. However, the traditional centralised aggregator approach has many disadvantages, including malicious node attacks, difficult dispatching, high transmission consumption and high operation cost. The day-ahead smart contract has been innovatively designed in this paper to enable the collaborative decision of participants on the day-ahead dispatch plan and subsequently ensure the forecast monitoring during the next day. In addition, the intraday smart contract can autonomously realise multilateral transactions based on reputation value and billing autonomously. The simulation result shows that the proposed approach can reduce the cost of distributed energy dispatching.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; Distributed energy; Economic dispatch; Multilateral transactions; Smart building cluster; Smart contracts
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 理论性文章
【影响因子】3.889
【主题类别】
区块链应用-实体经济-供应链
【Abstract】Counterfeiting is found today in many industries and in various forms with severe consequences for supply chain operations. Products counterfeiting can be detected in consumer goods such as clothing, food and beverages, accessories, pharmaceuticals, electronics, and luxury goods. The continuous violations in the supply chain have led to the need for mobilization of all involved stakeholders to overcome counterfeiting challenges. Effective traceability seems to be the only way to combat this phenomenon, ensuring safe and sustainable supply chain operations. This paper presents a structured literature review on traceability approaches for combatting the product supply chain counterfeiting phenomenon that led to forming a structured classification framework. The performed analysis aims to identify trends and good practices and can be used as a guideline for real-life projects against supply chain counterfeiting. The results show that traditional traceability methods are not effective as they can be easily falsified using today's technological advancements. However, these same advancements also present valuable technologies such as blockchain and the internet of things to ensure safe and sustainable supply chain operations.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】traceability; supply chain; counterfeiting; technologies; blockchain; internet of things; industry sectors
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 综述
【DOI】 10.3390/su14116666
【影响因子】3.476
【主题类别】
区块链技术-核心技术-共识机制
【Abstract】In order to enhance the security and throughput of medical records storage system, a model using an improved H-Algorand consensus mechanism with credibility assessment is proposed. In this study, the model applies blockchain technology to realize distributed storage and privacy protection of medical data. To ensure the effective operation of the blockchain system, a credibility assessment algorithm is used to obtain the trust value of each medical institution node, and replaces the account balances in the H-Algorand consensus mechanism with the trust value as the node weight. Meanwhile, this paper designs a privacy protection scheme, through the searchable encryption algorithm and asymmetric encryption algorithm to achieve system data storage and sharing. Compared with the existing medical record storage model, the proposed model has higher security and throughput efficiency.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchains; Medical diagnostic imaging; Security; Throughput; Mathematical models; Data privacy; Data models; Blockchain; electronic medical records; credibility assessment; H-Algorand consensus mechanism
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 理论性文章
【影响因子】3.200
【主题类别】
区块链应用-实体经济-医疗领域
【Abstract】Over the last decade, the healthcare sector has accelerated its digitization and electronic health records (EHRs). As information technology progresses, the notion of intelligent health also gathers popularity. By combining technologies such as the internet of things (IoT) and artificial intelligence (AI), innovative healthcare modifies and enhances traditional medical systems in terms of efficiency, service, and personalization. On the other side, intelligent healthcare systems are incredibly vulnerable to data breaches and other malicious assaults. Recently, blockchain technology has emerged as a potentially transformative option for enhancing data management, access control, and integrity inside healthcare systems. Integrating these advanced approaches in agriculture is critical for managing food supply chains, drug supply chains, quality maintenance, and intelligent prediction. This study reviews the literature, formulates a research topic, and analyzes the applicability of blockchain to the agriculture/food industry and healthcare, with a particular emphasis on AI and IoT. This article summarizes research on the newest blockchain solutions paired with AI technologies for strengthening and inventing new technological standards for the healthcare ecosystems and food industry.
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】2022-07-18
【文献类型】 理论性文章
【DOI】 10.1155/2022/4228448
CCF-C
【影响因子】2.146
【主题类别】
区块链技术-协同技术-物联网
【Abstract】As the product of the third information technology revolution, the Internet of Things (IoT) has greatly altered our way of lifetime. Cloud storage has gradually become the best choice for data processing due to its scalability and flexibility. However, the cloud is not a completely trusted entity, such as tampering with user data or leaking personal privacy. Therefore, cloud storage usually adopts attribute-based encryption schemes to accomplish data confidentiality and fine-grained access control. However, applying the ABE scheme to the Internet of Things still faces many challenges, such as dynamic user revocation, data sharing, and excessive computational burden. In this paper, we propose a novel searchable attribute encryption system that replaces the traditional key generation center with consortium blockchain to generate and manage partial keys. In addition, our scheme can perform predecryption operations in the cloud, and users only need to spend a small amount of computational cost to achieve decryption operations. Security analysis proves that our scheme achieves security under both the chosen keyword attack and the chosen plaintext attack. Compared with other schemes, this scheme is more economical in terms of computing and storage.
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】2022-07-18
【文献类型】 理论性文章
【DOI】 10.1155/2022/8350006
【Author】 Xie, Wangsong
【影响因子】1.863
【主题类别】
区块链应用-虚拟经济-金融领域
【Abstract】To address the challenges of financing SMEs, breaking the limitations of traditional financing models, a blockchain-based financial risk prevention and early warning system for businesses has been proposed and an in-depth study of the system has been undertaken. As a scientific and technological means to strengthen the disclosure and sharing of information such as credit records and risk early warning, The key to getting financial institutions to lend to SMEs is to avoid financial credit risk in the value chain. Considering SMEs located in supply chains as an object of study, using the logical relationships between block chains and financial credit risk management chains, three principles of supply chain management are proposed by analyzing the logical relationships between supply chains and financial credit control chains. Chain using blockchain technology, namely. the principle of recognizing the trust of major enterprises, the principle of sharing information about the financing process and the principle of general cooperation for successful financing. Based on this principle, an evolutionary game model is used to analyze the evolutionary path of endorsement fiduciary relationships between major enterprises and SMEs, the influencers of evolutionary equilibrium, the evolutionary path of cooperation between commercial banks and SMEs in financing, the evolutionary path under the control of third-party institutions, and influencers. The research shows that the financing activities of commercial banks and small and medium-sized enterprises are based on the trust endorsement of core enterprises in the supply chain, and the intervention of third-party regulators will help to promote the consistent cooperation and information sharing of all participants in the supply chain, so as to promote the smooth completion of supply chain financing.
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】2022-07-18
【文献类型】 理论性文章
【DOI】 10.1155/2022/4435296
【Author】 Zhao, Shajunyi Zhao, Jingfeng
【影响因子】1.863
【主题类别】
区块链应用-实体经济-公共管理
【Abstract】The supply chain is an organization alliance formed by the aggregation of many enterprises and based on the information flow to realize the coordinated operation of all links between enterprises. Therefore, enhancing the information synergy between enterprises is a weapon to enhance the overall competitiveness of the supply chain. The introduction of information management technology is the technical support and fundamental guarantee to realize the supply chain information synergy capability. The introduction of blockchain solves the two main problems of traceability and irreversibility of transactions in the supply chain, which can effectively improve the transparency of the supply chain. Transparency, as an important point for all stakeholders in the supply chain, can ensure that product information can be viewed and obtained in a timely manner. The purpose of this article is to analyze the role of blockchain in the modern city governance information management system by observing and analyzing the methods of modern city governance information management system and to understand the application and development prospect of blockchain in the modern city governance information management system. The comparison of the blockchain before and after the implementation of the modern city governance information management system and the research on the application and development of the blockchain in the modern city governance information management system were analyzed. Using the method of this article, through the analysis of experimental data, I learned the role of blockchain in the modern city governance information management system and found that the blockchain plays an important role in the application and development of the modern city governance information management system, with a satisfaction of 60%. Through the combination of theoretical and experimental data, the application and development effect of the blockchain in the modern city governance information management system is analyzed to reach 55%. The research results show that the blockchain is in the application and development of the modern city governance information management system. It plays an important role. The strength of information flow transmission, processing, and analysis capabilities directly affects the smooth flow of transactions and interactions in all links of the supply chain.
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】2022-07-18
【文献类型】 实证性文章
【DOI】 10.1155/2022/3952561
【Author】 Terranova, Giuseppe
【影响因子】0.000
【主题类别】
区块链治理-法律治理-区块链监管制度
【Abstract】For several years, the United Nations High Commissioner for Refugees (UNHCR) has insisted on the need to invest in new technologies to improve the procedures for the identification, reception and redistribution of asylum seekers around the world. United Nations experts have promoted new forms of digital inclusion aimed at both asylum seekers and displaced persons. They consider digital tools to be essential for achieving one of the UN Sustainable Development Goals: Target 16.9, which by 2030 intends to provide legal identity for all, including birth registration. Biometrics have been used on an experimental basis since the early 2000s to create digital identities in the humanitarian space for those vulnerable persons without traditional identity documents. It is a divisive subject. The aim of this article is to consider, from a geopolitical perspective, if following the acceleration of the digital revolution caused by the pandemic it is possible to invest in technological tools to improve the processes of identification, redistribution and reception of asylum seekers and displaced persons while at the same time respecting their privacy and freedoms. This hypothesis would signal the emergence of a geography of receiving asylum seekers on a global scale based not only on the governance of territory and borders, but also on platform governance.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】asylum seeker; biometrics; digital identity; refugee; stateless
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 理论性文章
【DOI】 10.3934/geosci.2022022
【Author】 Ha, Le Thanh Dai, Nguyen Van
【影响因子】0.000
【主题类别】
区块链治理-市场治理-数字货币
【Abstract】This paper presents how volatility propagates through the cryptocurrency market. Our paper provides evidence for volatility connectedness on cryptocurrencies. The different econometric techniques, including the stochastic volatility (SVOL) model and time-varying parameter VAR models using a quasi-Bayesian local likelihood (QBLL), are applied to measure the volatility of the cryptocurrency market. Using high-frequency, intra-day data of the largest cryptocurrencies over 2018-2021, we detect the great volatility of the cryptocurrency market are the beginning of 2019, the beginning of 2020, and throughout the year of 2021. The total connectedness values suggest that the cryptocurrency market becomes volatile as the new strains of the COVID-19 appear at the end of 2021. However, by using directional connectedness, we reveal that there are negative and positive spillovers from a specific cryptocurrency to other cryptocurrencies. The great fluctuations in the period before the COVID-19 health crisis stem from the positive resonance (symmetric) between the volatility of each cryptocurrency, while this health crisis leads to substantially positive and negative spillovers (asymmetric) of cryptocurrencies, and this makes market volatility weaker than it actually is.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Cryptocurrency; COVID-19 pandemic; volatility; connectedness; spillover
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 实证性文章
【Author】 Rashideh, Waleed Alkhathami, Mohammed Obidallah, Waeal J. Alduraywish, Yousef Alshammari, Abdulaziz Alsahli, Abdulaziz
【影响因子】0.000
【主题类别】
区块链应用-实体经济-旅游领域
【Abstract】Tourism products involve the transfer of money that is flowing to countries with partners or borders, which do not possess any relations surrounding their business environment. Suitable platforms must be generated by the tourism industry, which are beneficial to users when their demands are satisfied based on financial, technology, knowledge, and industry matters. Intermediaries are applied to alleviate different problems that are related to the non-fulfilment of contracts of existing users and service providers who are offering their services and represent a reliable third party. However, it is significant that intermediaries must be reliable when charges are incurred for any possible commission. Cryptocurrencies rely on blockchain technology to provide smoothness in money interchange without the need for reliable third parties. This interchange allows an increasing number of different new forms, which are related to different customer-to-customer transactions. The study attempts to provide an appropriate answer to the main research question, which is: 'Will the widespread adoption of cryptocurrencies bring new types of customer-to-customer markets from a technological, organizational, and environmental perspective?'.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain technology; business model; cryptocurrency; customer-to-customer; third party; monetary transaction
【发表时间】2022
【收录时间】2022-07-18
【文献类型】 理论性文章
【作者】 乔利利;邓峰;赵星;
【作者单位】华东师范大学经济与管理学部;复旦大学科学技术研究院;复旦大学大数据研究院;复旦大学国家智能评价与治理研究基地;元宇宙与虚实交互联合创新中心;
【文献来源】图书馆论坛
【复合影响因子】2.553
【综合影响因子】1.900
【主题类别】
区块链应用-虚拟经济-元宇宙
【摘要】文章从元宇宙的载体更新、通道扩容、结构转变三方面信息交互模式拓新出发，探讨元宇宙应用场景衍生出的治理挑战。基于元宇宙治理的诉求，从前提、定义和要素三方面厘清元宇宙敏捷治理的内涵；围绕元宇宙信息交互革命的特征带来的信息赋权、流程再造和角色重塑三个维度，探讨制定敏捷治理原则、关系和工具的实现方案；提出“数智人”实施路径，该路径以多源异构数据为基础、以智能算法研判为理据、以专家智慧为依托，三者互动实现快速感知、灵活响应、持续协调的元宇宙敏捷治理能力。文章以“数智人”在商业活动、工业生产、文化教育和智慧城市的元宇宙场景应用，探索其治理落地的方向，为后续探索提供思路。
【关键词】元宇宙;;信息交互模式;;数智人;;敏捷治理;;应用场景
【文献类型】 理论性文章
【发表时间】2022-07-18
【作者】 孙会岩;
【作者单位】上海大学马克思主义学院;
【文献来源】深圳大学学报(人文社会科学版)
【复合影响因子】2.082
【综合影响因子】1.285
【主题类别】
区块链应用-虚拟经济-元宇宙
【摘要】随着数字智能技术在日常生活领域的不断渗透,作为信息技术革命最新表现的元宇宙已经进入到政党政治领域,正在成为改变政党政治的重要参数。元宇宙能够从多个层面赋能政党政治:虚拟与现实融合提升了意识形态传播效果;实时交互与沉浸增强了民众政治参与水平;多重信息技术叠加推动了社会治理智能化,且元宇宙日益成为影响国家主权安全的新场域。面对这一新型政治力量,已有部分政党开始调试自身策略,充分挖掘元宇宙潜在的政治意蕴,以推动政党政治智能化发展。然而,当组织制度、资源结构、权力关系没有和技术协调演进时,元宇宙的发展也会给意识形态、民主政治、社会治理、主权安全等政党政治要素带来诸多潜在风险。因此,需要引入“顶层设计-制度体系-多方合作-社会伦理”的协同治理框架,通过顶层设计平衡技术逻辑与公共价值,通过制度创新增强元宇宙治理的灵活性与有效性,通过利益相关者联动构建多元协同治理模式,通过强化社会伦理弥补技术治理不足,进而将政党、政府、企业、民众纳入到元宇宙政党政治治理过程中,以实现价值、制度与技术耦合的协同治理体系。
【关键词】虚拟现实;;元宇宙;;政党政治;;风险;;协同治理
【文献类型】 理论性文章
【发表时间】2022-07-18
【作者】 潘雪;袁凌云;黄敏敏;
【作者单位】云南师范大学信息学院;云南师范大学民族教育信息化教育部重点实验室;
【文献来源】计算机应用研究
【复合影响因子】1.888
【综合影响因子】1.138
【主题类别】
区块链技术-核心技术-跨链与多链
【摘要】为了解决各个信任应用域之间的跨域安全问题，保证隐私数据的跨域共享，该文利用区块链技术，构建了基于主从链的隐私数据跨域共享模型。首先构建了主从链，并提出基于主从链的跨域共享模型架构；设计了基于智能合约的跨域访问机制；并基于跨域访问机制提出了面向隐私数据的跨域安全共享方案。最后，对模型的稳定性、吞吐量、存储开销等方面进行了实验及对比分析。实验结果表明，该文模型同最新的单链跨域模型相比，吞吐量提升了270TPS左右，节点的平均CPU负载和平均内存开销分别下降了24%和64%；同现有多链跨域模型相比，节点的平均CPU负载和平均内存开销分别下降了15%和20%，为物联网隐私数据的跨域安全共享提供了一种有效的方法。
【关键词】物联网;;区块链;;跨域共享;;主从链;;隐私数据
【文献类型】 实证性文章
【发表时间】2022-07-18
【作者】 郝敏;叶东东;余荣;王敬宇;廖建新;
【作者单位】广东工业大学;北京邮电大学;
【文献来源】电子与信息学报
【复合影响因子】1.870
【综合影响因子】1.481
【主题类别】
区块链应用-实体经济-交通领域
【摘要】6G网络将带来全场景按需服务泛在智能新范式，其中可信可靠网络服务是泛在智能的关键技术指标。该文面向6G零信任网络的通信需求，以区块链为“信任桥梁”，研究6G车联网边缘计算中的可信可靠接入管理方法。首先，采用基于二次剩余的零知识身份验证算法，在不暴露车辆隐私的前提下完成基站和车辆之间的相互验证与授权。然后，为提高验证效率并节省基站能耗，建立了基于契约理论的路侧冗余算力激励模型，将基站的一部分验证任务分配给边缘服务器或停泊车辆，再给予相应的报酬。最后，建立了基于双层区块链的6G零信任车联网架构，利用基站群维护的主链与边缘算力维护的辅链记录车联网身份验证的重要参数，实现零信任网络环境的可信接入。通过与现有方法比较，该文所述方法在不泄露车辆隐私的前提下显著提升了车辆验证效率，降低了基站能耗，具有更高的安全性。
【关键词】车联网;;零信任网络;;零知识证明;;区块链;;可信接入
【文献类型】 理论性文章
【发表时间】2022-07-18
【作者】 贺吉;范晓飞;姚竟发;孙磊;李旭东;索雪松;
【作者单位】河北农业大学机电工程学院;河北农业大学信息科学与技术学院;
【文献来源】中国农机化学报
【复合影响因子】
【综合影响因子】
【主题类别】
区块链应用-实体经济-农牧领域
【摘要】种质是农业的基础，是国家的战略资源，种子质量的优劣影响着整体种植业的生产规模和潜力。我国种业存在产业链条信息不完整、不透明；种子溯源系统与体系不完善、不安全等问题。将区块链技术融入到传统的种子信息溯源中，提出分布式数据存储的种子质量追溯模型。利用以太坊、物联网和终端应用等设计三层架构：应用层、物联网层和数据存储层。根据以太坊本身特点和系统数据存储、查询要求，设计分布式多数据库存储的方式。系统存储种子从生产到流通部门各个环节的数据信息，结合区块链数据信息不可篡改性、透明性和可追溯性高的特点，保证种子供应链上所有数据不被他人改动或隐藏，实现准确追溯、快速鉴定种子质量。系统采用的用户信用度智能合约算法，直击种子数据源头，保证购买种子的质量安全，为维护种子消费者权益提供信息技术与服务保障。
【关键词】种子;;区块链;;以太坊;;溯源;;信用度
【文献类型】 理论性文章
【发表时间】2022-07-18