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2024年10月10日 23篇

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Blockchain-Based Content Retrieval Mechanism in NDN-Enabled V2G Networks

【Author】 Aggarwal, Shubhani Kumar, Neeraj Mohammad, Nazeeruddin Barnawi, Ahmed

CCF-C

【影响因子】11.648

【主题类别】

区块链应用-实体经济-汽车领域

区块链技术-核心技术-信任机制

【Abstract】In the coming years, massive amounts of data are likely to be traded in vehicle-to-grid (V2G) networks to enhance traffic efficiency and safety through vehicular communications. However, several challenges need to be addressed before realizing the full potential of V2G networks. These challenges include the privacy-preservation of users, secure caching, scalability in deep environments, unreliability in high mobility events, and low efficiency in large networks. To overcome these challenges in V2G networks, named data networking (NDN) offers a good solution. It provides a new future Internet architecture: "named content-based" rather than "host addresses." The main focus of NDN in V2G networks is to provide data availability, network performance, data retrieval, and data distribution. However, the presence of NDN in V2G networks introduces several issues like privacy and trust among vehicular nodes. Hence, this article proposes a system model based on blockchain technology in NDN-enabled V2G networks. This model provides secure and fast named content searching and enhances the trust among vehicular nodes. The simulation results show that the block propagation latency of NDN-based blockchain is less than the IP-based blockchain systems. In addition, the performance of the proposed scheme outperforms an existing scheme. The reason is to use the proof-of-authority consensus mechanism compared to proof of work, which uses high mining computation power. Furthermore, the proposed scheme increases the trust and transparency in NDN-enabled V2G networks.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Vehicle-to-grid; Blockchains; Security; Protocols; Data models; Privacy; Smart contracts; Blockchain; content retrieval; named data networking (NDN); privacy and trust; vehicle-to-grid (V2G)

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 理论模型

【DOI】 10.1109/TII.2024.3438253

Five-Year Review of Blockchain in Construction Management: Scientometric and Thematic Analysis (2017-2023)

【Author】 Gartoumi, Khalil Idrissi

【影响因子】10.517

【主题类别】

区块链应用-实体经济-建筑领域

【Abstract】Interest in technological innovation within the construction industry has grown significantly. By 2023, Blockchain Technology (BCT) has gained considerable popularity and reached its fifth year of scientific discussion. This paper aims to examine the expansion of BCT and evaluate its current environment. At the time of writing, 237 documents were analysed. A mixed-methods approach was employed, combining scientometric and thematic analysis with a critical review. The results outline the trends in this research area and categorise thematic BCT applications in the construction industry into eight distinct categories. The paper identifies the challenges associated with BCT deployment and offers guidance on the key factors for its successful application in resolving construction disputes. First to using a scientometric and thematic method, this paper not only reinforces existing literature but also proposes future research directions and practical actions to develop further the critical factors necessary for BCT's success in the construction industry.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain Technology (BCT); Construction management; Building Information Modelling (BIM); Scientometric and thematic analysis

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 综述

【DOI】 10.1016/j.autcon.2024.105773

Blockchain technology adoption in a supply chain: Channel leaderships and environmental implications

【Author】 Dou, Guowei Wei, Kun Sun, Tingting Ma, Lijun

【影响因子】10.047

【主题类别】

区块链应用-实体经济-金融领域

【Abstract】Blockchain technology (BT) is widely implemented in businesses, yet its adoption within distinct channel leaderships in a supply chain has not been well studied. Following real-world practices, we build analytical models to study two strategies in which the manufacturer leads BT adoption (MLB) and the retailer leads BT adoption (RLB). Our results show that BT adoption does not necessarily create extra supply chain profits. Higher profits can be obtained when consumers show a strong preference for traceability or when the leader shares sufficient costs otherwise. Raising leaders' cost-sharing proportions does not necessarily benefit followers, and the cost burden may motivate leaders to reduce the traceability level, thereby decreasing overall benefits. Interestingly, cost-sharing is not a "zero-sum" game for supply chain members, and sharing more costs as followers may help create mutual benefits. A comparison of the strategies of MLB and RLB reveals that the product price, traceability level, and carbon emissions in MLB can either be higher or lower than those in RLB. From an environmental perspective, we show that the carbon tax has a nonmonotonic effect on product retail prices. For the supply chain, it is possible to increase profits but simultaneously reduce emissions in each strategy, and a superior strategy that improves both economic and environmental performance exists. By modelling the regulator's participation in BT adoption, we further show that emission taxes and BT subsidies are not concomitant, and surprisingly, we find that the emission tax may either increase or decrease with product emission intensity. Moreover, our extension shows that regular operational costs for BT may impact the economic performance of BT adoption but other key findings remain robust.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain technology; Traceability; Cost-sharing contract; Carbon tax; Social welfare

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 理论模型

【DOI】 10.1016/j.tre.2024.103788

Blockchain-Envisioned UAV-Aided Disaster Relief Networks: Challenges and Solutions

【Author】 Wang, Yuntao Hu, Qinnan Li, Zhendong Su, Zhou Li, Ruidong Zou, Xiang Zhou, Jian

【影响因子】9.030

【主题类别】

区块链应用-实体经济-无人机领域

区块链技术-核心技术-分布式账本

区块链技术-核心技术-智能合约

【Abstract】Natural or man-made disasters pose significant challenges for delivering critical relief to affected populations due to disruptions in critical infrastructures and logistics networks. Unmanned aerial vehicles (UAVs)-aided disaster relief networks (UDRNs) leverage UAVs to assist existing ground relief networks by swiftly assessing affected areas, and timely delivering lifesaving supplies. To meet the growing demands for collaborative, trust-free, and transparent UDRN services, blockchain-based UDRNs emerge as a promising approach through immutable ledgers and distributed smart contracts. However, several efficiency and security challenges hinder the deployment of blockchain-based UDRNs, including the lack of cooperation between smart contracts, lack of dynamic audit for smart contract vulnerabilities, and low forensics robustness against transaction malleability attacks. Toward efficient and secure blockchain- based UDRNs, this article presents potential solutions: a series of collaborative smart contracts for coordinated relief management; a dynamic contract audit mechanism to prevent known/unknown contract vulnerabilities; and a robust transaction forensics strategy with on/off-chain cooperation to resist transaction malleability attacks. Our prototype implementation and experimental results demonstrate the feasibility and effectiveness of our approach. Lastly, we outline key open research issues crucial to advancing this emerging field.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Disasters; Blockchains; Smart contracts; Collaboration; Real-time systems; Land vehicles; Air to ground communication; Security; Vehicle dynamics; Stakeholders

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 理论模型

【DOI】 10.1109/MCOM.003.2400310

Understanding sentiment shifts in central bank digital currencies

【Author】 Conlon, Thomas Corbet, Shaen Hou, Yang (Greg) Hu, Yang Larkin, Charles Oxley, Les

【影响因子】8.222

【主题类别】

区块链治理-市场治理-数字货币

区块链治理-市场治理-区块链金融监管

区块链治理-市场治理-情感分析

【Abstract】This paper investigates the motivations behind Central Banks' issuance of digital currencies (CBDC) and the associated risks, including potential misuse and distrust from international actors. Non-issuance of CBDC could hinder financial innovation, while issuance might introduce risks related to cybercriminality and misuse by rogue nations. This study balances these motives by assessing whether sentiment provides significant insights for policymakers and regulators. Utilising social media data, we analyse the impact of CBDC-related central bank releases, severe negative events, and contagion effects from traditional financial markets on CBDC sentiment. Our findings reveal that central bank announcements generally boost positive sentiment towards CBDCs through the provision of reassurance, whereas major geopolitical events trigger significant fluctuations in sentiment. The research highlights the critical role of sentiment analysis in understanding external influences on the development and implementation of CBDCs.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Central banks; CBDC; Cryptocurrency; Stablecoin; Sentiment

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 案例研究

【DOI】 10.1016/j.jbef.2024.100988

Feed4Cloud: Towards trustworthy QoE-aware cloud service monitoring using blockchain

【Author】 Kapetanidou, Ioanna Angeliki Sarros, Christos-Alexandros Ledakis, Giannis Tsaoussidis, Vassilis

【影响因子】7.307

【主题类别】

区块链技术-协同技术-身份验证

【Abstract】The recent prevalence of microservice-based applications that leverage the capabilities offered by cloud and edge computing, has given rise to highly complex services which create new challenges for efficient monitoring and orchestration. In today's cloud environments, service monitoring is typically premised on technical Quality of Service (QoS) performance metrics, rather than on Quality of Experience (QoE) as perceived by users. In this paper, we posit that user feedback should also play a significant role in cloud service monitoring. However, we explicitly set a prerequisite: the trustworthiness of user feedback should not be considered guaranteed. Therefore, we have developed Feed4Cloud, the first system to complement QoS monitoring with exclusively trustworthy user feedback for QoE-aware cloud service management. The novelty of our solution lies in two key aspects: First, the establishment of an intermediate verification layer that validates user feedback before it is injected into the orchestration engine. The second key aspect is the use of Blockchain in this layer, as a means to record user feedback in a decentralized and secure way, aiming to achieve non-repudiation and ensure its integrity. In this paper, we present the architectural details of the Feed4Cloud prototype, while placing a particular focus on aspects regarding trustworthy evaluation of service performance. Furthermore, we provide evaluation results that validate the effectiveness of the introduced verification layer and demonstrate that QoE-based service evaluation can consistently be conducted in a trustworthy manner across a wide range of system conditions and user behaviors.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Cloud computing; Blockchain; Quality of Experience (QoE); Reputation; User feedback

【发表时间】2025

【收录时间】2024-10-10

【文献类型】 案例研究

【DOI】 10.1016/j.future.2024.107532

Using blockchain technology to achieve sustainability in the hospitality industry by reducing food waste

【Author】 Omar, Ilhaam A. Hasan, Haya R. Jayaraman, Raja Salah, Khaled Omar, Mohammed

【影响因子】7.180

【主题类别】

区块链技术-核心技术-区块链网络

区块链应用-实体经济-酒店领域

区块链应用-实体经济-食品供应链

【Abstract】The hospitality industry generates significant food waste, leading to adverse environmental and economic impacts, social and ethical concerns, legal and regulatory issues, and operational challenges. The lack of traceability and trust among stakeholders in the hospitality industry exacerbates the expensive and difficult nature of food waste management. This work proposes a blockchain-based solution that aims to minimize food waste generated in hospitality outlets, thereby fostering a sustainable food ecosystem. Within this context, the term 'sustainable food ecosystem' refers to the interconnected network of stakeholders involved in the responsible management of food resources within the hospitality industry. In this context, we categorize these stakeholders under the umbrella of 'food resource management entities,' encompassing both food donation organizations and recycling companies, recognizing their distinct roles in the effective management of surplus food resources. With our proposed solution, businesses can track and verify the origin, movement, and disposal of food items in real-time, facilitating streamlined inventory planning, waste reduction, and heightened operational efficiency. Additionally, the proposed system ensures transparency and accountability, guaranteeing the proper and efficient disposal of food waste. Using a permissioned Ethereum network, our solution establishes seamless connectivity between food and beverage outlets and various food resource management entities. We present a generalized system for secure information sharing, integrating advanced algorithms tailored to capture and enhance trust among participating stakeholders. Furthermore, our thorough security analysis underscores the robustness of our proposed solution, effectively addressing various security vulnerabilities. Lastly, the proposed blockchain-based solution is commercially viable, enabling the hospitality industry to operate with enhanced efficiency while providing improved information connectivity for various stakeholders in the food supply chain.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Food waste management; Hospitality industry; Food sustainability; Blockchain; Smart contracts

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 理论模型

【DOI】 10.1016/j.cie.2024.110586

Competency or investment? The impact of NFT design features on product performance

【Author】 Wang, Yanxin An, Jingzhao Zhao, Xi Lu, Xiaoni

CCF-C

【影响因子】6.969

【主题类别】

区块链应用-虚拟经济-NFT

【Abstract】This study investigates how NFT design features affect project performance. From the consumption perspective, NFT design features are divided into competency-related (image complexity, consistency) and investment-related (initial price, royalty). Using transaction data of 3297 NFT projects, we find that image complexity has an inverted U-shaped effect on long-term performance, while consistency boosts both short-term and long-term performance by formulating brand symbolism. Royalty as investment cost negatively affects short-term performance, while royalty and initial price exhibit inverted U-shaped impacts on long-term performance due to their mixed roles of costs and quality signals. Market uncertainty amplifies the impacts of complexity and royalties while diminishing the initial price impact in the long term. Findings support NFT project design, enhancing Web3 consumer behavior understandings.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Non-fungible tokens; Product design; Product performance; Web3

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 实证数据

【DOI】 10.1016/j.dss.2024.114341

Integrated development of the industrial chain and innovation chain of high-tech manufacturing industry based on the Internet of Things

【Author】 Xie, Zhen Bu, Wei Feng, Hua Wang, Yan

【影响因子】6.626

【主题类别】

区块链技术-协同技术-物联网

【Abstract】This study proposes an IoT-based smart manufacturing method, which aims to improve the integration efficiency of the industrial chain and innovation chain in high-tech manufacturing. By introducing blockchain technology and cloud-edge collaborative computing optimization, our method shows significant advantages in data integrity, system response time, computing resource utilization, cost-effectiveness, data security, system interoperability, supply chain collaborative efficiency, product quality, customer satisfaction and data processing efficiency. The simulation results show that the proposed method is superior to the traditional method in all key indicators, especially in improving data integrity (98%), reducing system response time (250ms), improving computing resource utilization (CPU utilization 85%) and significantly reducing costs. By optimizing the data processing process and algorithm, our method can process and analyze big data more efficiently, thereby improving the overall performance and response speed of the system, and providing a solid theoretical and practical foundation for the intelligent transformation of high-tech manufacturing.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Internet of Things; Smart manufacturing; Blockchain; Cloud-edge collaborative computing; High-tech manufacturing

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 实验仿真

【DOI】 10.1016/j.aej.2024.09.052

Leveraging blockchain technology to enhance transparency and efficiency in carbon trading markets

【Author】 Boumaiza, Ameni Maher, Kenza

【影响因子】5.659

【主题类别】

区块链应用-实体经济-电力领域

【Abstract】The global energy sector is undergoing a significant transformation, driven by the emergence of 'prosumers'- individuals who generate and consume energy. This shift is redefining traditional roles and is propelled by a growing demand for sustainable and renewable energy. Prosumers utilize decentralized energy sources, such as solar panels and wind turbines, enhancing energy independence by producing their own energy and selling any surplus back to the grid. However, this decentralized landscape presents challenges in accurately tracking carbon emissions and establishing equitable pricing mechanisms. In response to these challenges, we propose an innovative blockchain-based peer-to-peer (P2P) trading platform for carbon allowances. This novel approach gives prosumers a decisive influence over energy pricing, ensuring a more equitable distribution of energy resources. The blockchain framework benefits from decentralization, promoting transparency, security, and an immutable record of energy transactions and carbon emissions. To evaluate the platform's effectiveness, we will initiate a real-world pilot project within the Education City Community Housing (ECCH) to gather empirical data over one year. The pilot will involve various participants-including prosumers and traditional consumers-and will meticulously monitor energy production, consumption, and trading activities. By comparing this decentralized system with traditional energy models, we aim to assess its impact on carbon emissions, user satisfaction, and overall economic viability, paving the way for a sustainable energy future.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Power grid; Carbon allowance; Decentralized marketplace; Artificial intelligence; Blockchain; Sustainability; Battery storage

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 实验仿真

【DOI】 10.1016/j.ijepes.2024.110225

Symbiotic Blockchain Consensus: Cognitive Backscatter Communications-Enabled Wireless Blockchain Consensus

【Author】 Luo, Haoxiang Zhang, Qianqian Sun, Gang Yu, Hongfang Niyato, Dusit

【影响因子】3.796

【主题类别】

区块链技术-核心技术-共识机制

【Abstract】The wireless blockchain network (WBN) concept, born from the blockchain deployed in wireless networks, has appealed to many network scenarios. Blockchain consensus mechanisms (CMs) are key to enabling nodes in a wireless network to achieve consistency without any trusted entity. However, consensus reliability will be seriously affected by the instability of communication links in wireless networks. Meanwhile, it is difficult for nodes in wireless scenarios to obtain a timely energy supply. Energy-intensive blockchain functions can quickly drain the power of nodes, thus degrading consensus performance. Fortunately, a symbiotic radio (SR) system enabled by cognitive backscatter communications can solve the above problems. In SR, the secondary transmitter (STx) transmits messages over the radio frequency (RF) signal emitted from a primary transmitter (PTx) with extremely low energy consumption, and the STx can provide multipath gain to the PTx in return. Such an approach is useful for almost all vote-based CMs, such as the Practical Byzantine Fault-tolerant (PBFT)-like and the RAFT-like CMs. This paper proposes symbiotic blockchain consensus (SBC) by transforming 6 PBFT-like and 4 RAFT-like state-of-the-art (SOTA) CMs to demonstrate universality. These new CMs will benefit from mutualistic transmission relationships in SR, making full use of the limited spectrum resources in WBN. Simulation results show that SBC can increase the consensus success rate of PBFT-like and RAFT-like by 54.1% and 5.8%, respectively, and reduce energy consumption by 9.2% and 23.7%, respectively.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Wireless blockchain network; PBFT consensus; RAFT consensus; symbiotic radio; cognitive backscatter communication

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 实验仿真

【DOI】 10.1109/TNET.2024.3462539

Stable Byzantine Fault Tolerance in Wide Area Networks With Unreliable Links

【Author】 Ling, Sitong Liu, Zhuotao Li, Qi Du, Xinle Chen, Jing Xu, Ke

【影响因子】3.796

【主题类别】

区块链技术-核心技术-共识机制

【Abstract】With the increasing demand for blockchain technology in various industry sectors, there has been a growing interest in the Byzantine Fault Tolerance (BFT) consensus that is the backbone of most of these blockchains. However, many state-of-the-art algorithms that require reliable connections can only offer limited throughput in wide-area networks (WANs), where participants are connected over long distances and may experience unpredictable network failures. The partially-connected BFTs are designed for unreliable and highly dynamic networks yet impose exponential communication complexity. This paper proposes Stable Byzantine Fault Tolerance (SBFT), a BFT communication abstraction that can sustain high throughput and low latency in WAN. SBFT separates the leader from consensus in pipelined BFT consensus and uses an adaptive consensus mechanism to resist dynamic faulty links, maintaining consensus efficiency when network connectivity is high while adapting to dynamic networks with low connectivity. We implemented a prototype of SBFT and tested it on the WAN. The results demonstrate that SBFT has a throughput similar to HotStuff in a fault-free environment but can reduce about 80% of consensus latency. Besides, SBFT retains 40% of the original throughput when the link failure probability is 0.4, while the baseline HotStuff retains less than 40% when the link failure probability is only 0.1.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Byzantine fault tolerance; stable consensus; adaptive consensus; dynamic network; partially connected network; Byzantine fault tolerance; stable consensus; adaptive consensus; dynamic network; partially connected network

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 实验仿真

【DOI】 10.1109/TNET.2024.3461872

Access Control Models and Frameworks for the IoT Environment: Review, Challenges, and Future Direction

【Author】 Mishra, Rajiv Kumar Yadav, Rajesh K. Nath, Prem

【影响因子】2.017

【主题类别】

区块链技术-协同技术-物联网

【Abstract】The rapid growth of the Internet of Things and the massive growth of sensitive data created by user equipment have headed to resilient demand for additional security and privacy measures. The data produced by the IoT devices are often sensitive & personal, which raises new concerns about security measurement. The development & adoption of IoT and the security aspects of the IoT are not going at the same pace. The future IoT architecture must emphasize enough security concerns and provides adequate measures to prevent devices/data from being accessed by unauthorized means. This work encompasses a comprehensive analysis of frameworks & models of access control for the IoT environment. In this review paper, the analysis of access control solutions is done in four parts: the first part compares various existing review articles with our work, the second part encompasses architecture-based access control mechanisms, the third part comprises access control models, and the fourth part contains few emergent solutions including blockchain-based solutions. Subsequently, prevalent solutions are mapped to vital requirements of the IoT environment. Eventually, security obligations for the IoT environment, probable challenges, and forthcoming research directions are highlighted. This research explores the growing literature on access control for IoT, emphasizing its security requirements.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Internet of things; Security; Privacy; Access control; Blockchain

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 综述

【DOI】 10.1007/s11277-024-11568-4

Examination of Bitcoin Hedging, Diversification and Safe-Haven Ability During Financial Crisis: Evidence from Equity, Bonds, Precious Metals and Exchange Rate Markets

【Author】 Ullah, Mirzat Sohag, Kazi Doroshenko, Svetlana Mariev, Oleg

【影响因子】1.741

【主题类别】

区块链治理-市场治理-市场分析

【Abstract】This study examines the investment strategies of Bitcoin along with equity, bonds, precious metals and the exchange rate volatility in the context of Russia-Ukraine conflict. The study analyzes daily data from January 1, 2018, to May 30, 2023, with unveiling a saga of financial resilience and strategic foresight. Against the backdrop of geopolitical upheaval, this study employs three sophisticated GARCH estimation models, artfully deciphering the nuanced hedging, diversification, and safe haven attributes of Bitcoin along with conventional financial assets within the Russian financial milieu. Within this intricate tapestry, the GJR-GARCH model emerges as a virtuoso, offering unparalleled precision in forecasting volatility and unraveling correlations among the underlined assets. Bitcoin's prowess as a hedge comes to the forefront, bestowing investors with the strategic advantage of risk diversification, while government bonds observed least attractive assets during the crisis period. Delving deeper into risk assessment, this research harnesses the potent tools of Value at Risk (VaR) and Conditional Value at Risk (CVaR). These estimations paint a vivid portrait of potential portfolio losses during times of crisis, providing a compass for prudent financial decision-making. In the crucible of crisis, Bitcoin emerges as a beacon of investment, witnessing a remarkable surge in adoption amidst heightened volatility and uncertainty. A symphony of market forces unfolds, where negative news resonates with greater intensity than its positive counterpart, underscoring the imperative of judicious asset allocation for effective risk mitigation. This study not only unfurls a compelling narrative for astute investors but also serves as a compass for policymakers navigating the treacherous waters of high market volatility and geopolitical uncertainties.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Bitcoin; Gold; Equity; Bonds; Russian financial market; GARCH estimation; Hedging and diversification; C11; C60

【发表时间】2024

【收录时间】2024-10-10

【文献类型】 实证数据

【DOI】 10.1007/s10614-024-10710-5

基于区块链的高效无口令认证方案

【作者】 柯宇泓; 林超; 黄欣沂; 伍玮; 陈雨婕

【作者单位】福建师范大学计算机与网络空间安全学院;暨南大学网络空间安全学院;香港科技大学(广州)教育科学学院;福建大数据信息安全建设运营有限公司;

【文献来源】计算机研究与发展

【复合影响因子】3.363

【综合影响因子】2.388

【主题类别】

区块链应用-实体经济-身份验证

【摘要】数字化时代,数据已成为社会运转的核心资产,而身份认证凭证是其中最关键且敏感的数据要素之一.传统的口令认证方法需在服务器存储账号、口令等凭证信息,面临严重的数据泄露隐患.基于公钥密码体系的无口令认证技术通过公私钥对替代传统口令,用户利用私钥计算认证信息的签名而实现认证,服务器仅存储公钥等公开信息,从而解决了服务器泄露私钥信息的问题.然而,现有无口令认证系统存在多平台认证不互通、在线认证延迟高、设备丢失私钥难恢复等痛点,且系统的透明度和审计能力有待提高.为解决这些问题,提出一种基于区块链的多平台兼容的高效无口令身份认证方案.将FIDO2无口令认证技术与区块链技术相结合,允许用户生成并上传多个账户公钥至区块链网络,供服务方公开验证,同时通过账户线下预注册、签名预计算、链上数据同步等优化手段,实现了可互通、低开销、大规模用户适用的身份认证.还设计了加密备份机制,即使用户设备遗失,也可利用保存的加密密钥恢复备份数据.此外,利用区块链提供不可篡改的数据存证,所有参与方均可查询认证授权状态,提高了系统透明度.最后,全面论述和评估了方案的安全性与系统性能,理论分析和实验结果表明,提出方案较同类型方案降低了89.09%的在线计算开销和85.57%的通信开销,且在高负载测试条件下仍能够保持低延迟的认证响应.

【关键词】身份认证;;FIDO2;;区块链;;数字签名;;数据要素

【文献类型】 实验仿真

【DOI】

【发表时间】2024-10-10

面向跨联盟链的隐私保护数据要素交易审计方案

【作者】 张川; 王子豪; 梁晋文; 刘梦轩; 邓淏天; 祝烈煌

【作者单位】北京理工大学网络空间安全学院;香港理工大学电子计算学系;

【文献来源】计算机研究与发展

【复合影响因子】3.363

【综合影响因子】2.388

【主题类别】

区块链技术-协同技术-隐私保护

【摘要】随着企业数据资产化的发展,联盟链成为了企业联盟内部数据交易的核心基础设施.利用联盟链构建去中心化、不可篡改、访问可控的数据交易市场,可以提高数据交易的可信度,降低数据泄露风险.然而,随着企业联盟的增多,如何促进跨企业联盟的数据要素流通,抵御数据隐私泄露、数据欺诈和支付抵赖等安全威胁,成为了数据流通领域亟待解决的难题.为此,提出了一种面向跨联盟链的隐私保护数据要素交易审计方案.该方案利用联盟链进行数据存证,通过中继链上的智能合约进行数据验证和支付管理.结合Pedersen承诺和Shamir秘密分享技术,构建零知识证明机制,在不泄露数据要素的情况下防止数据欺诈的发生.此外,还引入了一种基于双线性映射的数据要素完整性审计机制,允许在不透露数据隐私的情况下验证数据要素的收据,有效解决支付抵赖问题.通过理论分析和实验评估,验证了所提方案的有效性和可靠性,在本地模拟实验环境下,实验结果表明所提方案是可行且高效的.

【关键词】数据要素;;联盟链;;跨链;;审计;;零知识证明

【文献类型】 实验仿真

【DOI】

【发表时间】2024-10-10

基于分布式数字身份的可审计医疗数据共享

【作者】 宋文鹏; 张亮; 马宇航

【作者单位】复旦大学计算机科学技术学院;上海区块链工程技术研究中心;海南大学网络空间安全学院(密码学院);

【文献来源】计算机研究与发展

【复合影响因子】3.363

【综合影响因子】2.388

【主题类别】

区块链应用-实体经济-医疗领域

【摘要】互联网技术的不断快速发展,为数据共享带来日益便利之处,但数据安全和隐私问题也接踵而至.以医疗保健为例,人们既希望能迅速就诊和及时报销,又不希望泄露个人的病历和费用信息.为了适配此类数据共享场景,方案提出一种基于区块链和代理重加密(proxy re-encryption,PRE)的分布式数字身份(decentralized identity,DID)模型,进而实现智慧医疗的数据共享框架.区块链技术能避免单节点故障问题,以确保数据的可用性和一致性.代理重加密能够实现数据的生成、管理和使用权限分离,实现DID模式下的可验证身份发行和验证,并达到医疗场景中以病患为中心的目的.运用BLS签名方案,对该DID模式下的身份可验证表达进行聚合签名及认证以提升效率.针对提出的代理重加密方案,在区块链上验证了密文的正确性,实现数据在密态下的可验证性和审计性.最后,方案对所提出的智慧医疗场景进行了安全分析,与相关工作对比分析,并在以太坊和星际文件系统(inter-planetary file system,IPFS)区块链平台上进行系统的实验验证,体现方案的可行性和高效性.

【关键词】代理重加密;;数据共享;;区块链;;智慧医疗;;分布式数字身份

【文献类型】 实验仿真

【DOI】

【发表时间】2024-10-10

基于去中心化身份的跨域数据交易系统

【作者】 郝嘉琨; 向鹏; 何逸飞; 高健博; 关志; 谢安明; 陈钟

【作者单位】北京大学计算机学院;智能交通数据安全与隐私保护技术北京市重点实验室(北京交通大学);北京大学软件工程国家工程研究中心;北京大学重庆大数据研究院;

【文献来源】计算机研究与发展

【复合影响因子】3.363

【综合影响因子】2.388

【主题类别】

区块链技术-协同技术-数据管理

【摘要】在数字化时代,数据作为重要的生产要素,对经济增长、科技创新和企业竞争力提升至关重要.传统的中心化的数据交易系统存在一系列数据安全、交易安全风险.虽然当前已经出现了基于区块链实现的去中心化数据交易系统,可以为数据交易提供安全保障,但基于区块链的数据交易系统仍难以处理跨地区、跨地域、跨国家的数据交易,其主要面临3个挑战:1)跨域身份解析结果的一致性问题;2)跨域身份解析服务的可用性问题;3)面向跨域交易的数据交易系统的安全与合规问题.为解决上述3个问题,基于去中心化身份技术设计了一套安全高效的身份跨域解析机制,并构建了一种安全、可监管的去中心化数据交易系统.身份跨域解析机制包括确保解析结果一致性的身份跨域协议和保障该协议执行服务可用性的激励机制.该去中心化数据交易系统支持基于身份属性的细粒度监管,并保证跨域数据交易的原子性.实验验证表明,该系统满足设计目标,解析延迟仅为跨域解析延迟的45%,缓存命中率通过主动和被动更新机制提高72%.系统兼容多种区块链,跨域数据交易平均在2.3个区块内完成,效率在可接受范围内.

【关键词】数据要素;;去中心化身份;;区块链;;智能合约;;激励机制

【文献类型】 实验仿真

【DOI】

【发表时间】2024-10-10

基于近似测量算法Sketch的高精度区块链异常检测机制

【作者】 朱龙隆; 陈翔; 陈浩东; 牛继堂; 刘雯靓; 林声睿; 张栋; 吴春明

【作者单位】福州大学计算机与大数据学院;浙江大学计算机科学与技术学院;泉城实验室;浙江大学工程师学院;浙江广播电视集团;

【文献来源】计算机研究与发展

【复合影响因子】3.363

【综合影响因子】2.388

【主题类别】

区块链治理-技术治理-异常检测

【摘要】区块链存在网络动态性强和其管理困难等问题,使得区块链普遍存在DDo S攻击和账户接管等异常现象.现有区块链异常检测方法多从所有区块链账户中提取历史交易信息和交易频率等特征加以分析以甄别异常.然而,随着区块链数据规模的不断扩大,现有方法在提取特征时面临内存消耗高、检测精度低的挑战.为此,提出了一种高检测精度、低内存开销的区块链异常检测机制,该机制采用近似测量算法将区块链异常检测转化为异常交易账户检测,包括区块内异常账户和跨区块异常账户.对于区块内异常账户,即仅存在于单个区块内的异常账户,使用Sketch算法进行账户识别,精度高.而对于存在于多个区块且难以通过单个区块信息检测到的跨区块异常账户,则通过聚合和分析多区块信息进行账户的准确检测.使用包含88 847个区块的真实区块链数据评估上述机制.实验结果表明,与现有代表性方法对比,所提出的机制将区块链异常检测的召回率最高提升了6.3倍,F1分数最高提升了4.4倍.因此,提出的高精度区块链异常检测机制对于规范区块链交易行为、维护系统安全性具有意义.

【关键词】区块链;;安全;;异常检测;;近似算法;;Sketch

【文献类型】 实验仿真

【DOI】

【发表时间】2024-10-10

面向数据要素流通的区块链数据加速交换方法

【作者】 李振宇; 丁勇; 易晨; 梁海

【作者单位】桂林电子科技大学计算机与信息安全学院;广西密码学与信息安全重点实验室(桂林电子科技大学);港专学院;

【文献来源】计算机研究与发展

【复合影响因子】3.363

【综合影响因子】2.388

【主题类别】

区块链技术-协同技术-数据共享

【摘要】随着新一轮科技革命和产业变革的深入发展,安全可靠的数据要素流通已成为当前迫切需要解决的问题.从而,数据交易所已开始使用区块链技术进行数据要素流通,能一定程度提升数据要素流通过程中的信任和监管能力.但区块链技术在面对海量的数据要素交换时仍需进一步研究以提升效率.因此,针对当前基于区块链的数据要素流通过程中效率偏低问题,提出区块链数据加速交换方法.首先,提出数据要素流通动态位置模型,方便数据交易所进行数据流通方向管理.其次,提出数据要素聚合上传方法,实现针对数据要素附带流通目的地的深层次聚合,以进一步加速区块链数据交换.随后,提出可选自动去重下载方法,以解决数据经区块链流通面临的应用问题.最后,通过一系列实验验证,提出的区块链数据加速交换方法能在已启用区块链交易打包等技术的条件下,进一步提升数据要素交换的效率,其相比于区块链框架所提供的异步数据交换方法,能获取约9.24倍的额外数据交换性能.

【关键词】数据要素;;区块链;;数据流通;;数据聚合;;加速交换

【文献类型】 实验仿真

【DOI】

【发表时间】2024-10-10

面向轻量级设备的云存储场景数据完整性校验方案

【作者】 韩冰; 王昊; 方敏; 张永超; 周璐; 葛春鹏

【作者单位】南京航空航天大学计算机科学与技术学院;华东师范大学数据科学与工程学院;东南大学网络空间安全学院;山东大学软件学院;山东大学-南洋理工大学人工智能国际联合研究院;

【文献来源】计算机研究与发展

【复合影响因子】3.363

【综合影响因子】2.388

【主题类别】

区块链技术-协同技术-云存储

【摘要】资源受限的轻量级移动设备往往可以通过将大规模数据外包至云存储服务器中从而卸载自身的计算和存储压力.然而该云存储模式存在自私云服务器丢弃数据以节省存储资源的可能性.因此需要能够对云储存数据进行有效的完整性校验以确保数据正确完好地存储着.然而现有的云存储完整性校验机制在缺乏可靠且能够满足数据隐私保护的前提下对数据进行即时、多次校验的机制.提出了一种基于可信执行环境的完整性校验机制,通过在隔离区域中对数据产生可信证明,保证了云服务器在全过程中对数据以及产生证明的全过程的不可见,从而不得不诚实地保证存储数据的完整性.为了进一步提高方案的安全性,引入了区块链智能合约以提供证明的可信存证和验证.此外,还考虑到了端侧设备的资源不足问题,提出了基于布谷鸟过滤器的高效验证机制.实验结果表明,该方法能够在保证隐私数据的完整性校验的基础上,实现较高的执行效率和实用性.

【关键词】完整性校验;;云存储;;可信执行环境;;区块链;;布谷鸟过滤器;;隐私保护

【文献类型】 实验仿真

【DOI】

【发表时间】2024-10-10

基于智能合约的编码级视频安全存证方案

【作者】 郭冉; 王奎; 徐衍胜; 张守军; 潘晓刚; 佟雨镪; 王京; 何云华; 焦泽政

【作者单位】北方工业大学信息学院;太原轨道交通一号线建设运营有限公司;山西军跃迈科信息安全技术有限公司;

【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-智能合约

【摘要】H。264/H。265视频压缩技术推动了短视频应用行业的蓬勃发展,但与此同时,视频安全与版权纠纷问题也日益凸显。现有的版权存证方法存在版权验证方信任缺失、验证流程不透明、视频溯源困难等问题。针对这些问题,提出了一种基于智能合约的编码级视频安全存证方案。利用H。264/H。265编码特性设计版权信息嵌入方法,将版权所有者信息作为水印在视频编码时嵌入。在保证水印鲁棒性和安全性的同时,减少嵌入信息对视频质量的影响;同时借助区块链和智能合约技术,规范身份存证、版权验证和纠纷处理等流程,增强流程执行的可信度和透明性。实验结果表明,在进行视频版权存证时采用的相似度对比算法的F1分数相比现有的最优方案增长了大约2%,证明其性能的优越性;另一组实验证实了智能合约的开销处于合理水平,确保其在实际应用中的可行性。

【关键词】智能合约;;版权存证;;视频编码;;区块链;;数字水印

【文献类型】 实验仿真

【DOI】 10.19734/j.issn.1001-3695.2024.05.0174

【发表时间】2024-10-10

碳配额与区块链情景下的电力供应链低碳投资策略

【作者】 陈威; 彭皓; 黄义; 马永开

【作者单位】成都理工大学管理科学学院;电子科技大学经济与管理学院;农业农村部农村经济研究中心;

【文献来源】系统管理学报

【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-电力领域

【摘要】针对碳配额机制和区块链技术双重背景下电力供应链低碳投资策略的问题,构建了由发电商和售电商组成的二级电力供应链模型,刻画了祖父法和基准法下是否使用区块链技术的4种情形。基于Stackelberg博弈理论框架,采用逆向归纳法,得出如下结果:(1)无论是否采用区块链技术,基准法下的低碳技术投资量、电力需求量和售电商利润总是高于祖父法;(2)无论是何种碳配额机制,当区块链技术应用成本较低时,采用区块链技术时的低碳技术投资量、电力需求量以及发电商和售电商利润均高于未采用区块链技术时;(3)低碳技术投资量和电力供应链企业利润随着消费者绿色信任与绿色偏好的增强而增加,随着低碳技术投资成本和区块链技术应用成本的增加而减少。

【关键词】电力供应链;;碳配额;;区块链;;低碳投资

【文献类型】 实证数据

【DOI】

【发表时间】2024-10-10

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