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摘要: The COVID-19 pandemic has severely affected daily life and caused a great loss to the global economy. Due to the very urgent need for identifying close contacts of confirmed patients in the current situation, the development of automated contact tracing app for smart devices has attracted more attention all over the world. Compared with expensive manual tracing approach, automated contact tracing apps can offer fast and precise tracing service, however, over-pursing high efficiency would lead to关键词: Aggregate Signature;Blockchain;COVID-19;Privacy-preserving contact tracing;Zero-knowledge proof
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摘要: Consensus mechanism, as the soul-building-block of decentralized settings, enables a series of blockchain applications, such as Bitcoin and Ethereum. For better security and soundness, more and more blockchain systems tend to adopt proof-of-authority (PoA) to avoid or alleviate the various security risks caused by their peer-to-peer (P2P) networks. However, the PoA protocol is also vulnerable to cloning attack (CA), which provides a potential pathway for double-spending attack and has not been w关键词: Blockchain;Consensus mechanism;Proof of authority;Cloning attack;Heartbeat-based defense scheme;Hierarchy node selection
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摘要: With recent advancements made in wireless communication techniques, wireless sensors have become an essential component in both data collection as well as tracking applications. Wireless Sensor Network (WSN) is an integral part of Internet of Things (IoT) and it encounters different kinds of security issues. Blockchain is designed as a game changer for highly secure and effective digital society. So, the current research paper focuses on the design of Metaheuristic-based Clustering with Routing 关键词: Wireless networks; blockchain; routing protocol; clustering; security; metaheuristics
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摘要: The latest 6G improvements secured autonomous driving's realism in Intelligent Autonomous Transport Systems (IATS). Despite the IATS's benefits, security remains a significant challenge. Blockchain technology has grown in popularity as a means of implementing safe, dependable, and decentralised independent IATS systems, allowing for more utilisation of legacy IATS infrastructures and resources, which is especially advantageous for crowdsourcing technologies. Blockchain technology can be used to 关键词: Blockchain; ethereum; intelligent autonomous transport system; security; deep belief network
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R. Rajadevi;K. Venkatachalam;Mehedi Masud;Mohammed A. AlZain;Mohamed Abouhawwash;56;
COMPUTER SYSTEMS SCIENCE AND ENGINEERINGVolume 44, Issue 1, 2023, PP 339-350
摘要: The Internet of Medical Things (IoMT) is an online device that senses and transmits medical data from users to physicians within a time interval. In, recent years, IoMT has rapidly grown in the medical field to provide healthcare services without physical appearance. With the use of sensors, IoMT applications are used in healthcare management. In such applications, one of the most important factors is data security, given that its transmission over the network may cause obtrusion. For data secur关键词: Blockchain; IoMT; malicious code detection; security; secure data management framework; data management; PoA
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摘要: The data in the cloud is protected by various mechanisms to ensure security aspects and user’s privacy. But, deceptive attacks like phishing might obtain the user’s data and use it for malicious purposes. In Spite of much technological advancement, phishing acts as the first step in a series of attacks. With technological advancements, availability and access to the phishing kits has improved drastically, thus making it an ideal tool for the hackers to execute the attacks. The phishing cases ind关键词: Cloud server; phishing URLs; phish detection blockchain; safe files; smart contract
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摘要: Generalized Tonic Clonic Seizure (GTCS) is a form of epileptic seizure in which a patient loses control over their entire body, ultimately leading to loss of consciousness. The Vagus Nerve Stimulator (VNS) is a tool/method for treating epileptic episodes that sends counter-electrical stimulations to the Vagus Nerve in order to mitigate epileptic signals from the brain. The machine is a stand-alone device that depends on human decision-making. The proposed framework uses an IoT and Blockchain ove关键词: IoT; GTCS; vagus nerve stimulator; blockchain; smart contract
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摘要: In the data communication system, the real-time information interaction of communication device increases the risk of privacy sensitive data being tampered with. Therefore, maintaining data security is one of the most important issues in network data communication. Because the timestamp is the most important way to authenticate data in information interaction, it is very necessary to provide timestamp service in the data communication system. However, the existing centralized timestamp mechanism关键词: Timestamp; verifiable delay functions; blockchain
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摘要: Blockchain technology is a shared database of logs of all consumer transactions which are registered on all machines on a network. Both transactions in the system are carried out by consensus processes and to preserve confidentiality all the files contained cannot be changed. Blockchain technology is the fundamental software behind digital currencies like Bitcoin, which is common in the marketplace. Cloud computing is a method of using a network of external machines to store, monitor, and proces关键词: Blockchain; bitcoin; customer; merchant; data protection; digital currencies; transaction
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摘要: The Internet of Things (IoT) and Cloud computing are gaining popularity due to their numerous advantages, including the efficient utilization of internet and computing resources. In recent years, many more IoT applications have been extensively used. For instance, Healthcare applications execute computations utilizing the user’s private data stored on cloud servers. However, the main obstacles faced by the extensive acceptance and usage of these emerging technologies are security and privacy. Mo关键词: Adler 32 hashing algorithm; linear scaling based rider optimization algorithm with integrated KL anonymity (LSR-KLA); timestamp-based public and private key schnorr signature (TSPP-SS); blockchain; internet of things (IoT); healthcare
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摘要: Customers want to experience unique products that suit their individual preferences. Therefore, companies are looking for ways to produce personalized products by moving away from traditional production models. Technologies such as blockchain, IoT, and cyber-physical systems have an important role in adopting the personal custom production model. In this study, a reliable and optimized mass customization framework is proposed. The framework has three main contributions. First, the use of Blockch关键词: Industry 4.0;Mass customization;Energy efficiency;Blockchain
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摘要: Despite substantial progress achieved with shrimp production during the last three and a half decades, growth of shrimp export remains minimal in Bangladesh. In the absence of effective traceability and transparency practices, a wide range of malpractice occurs both at the production and post-harvest stages. Traditional paper-based record-keeping methods for the shrimp supply chain are disparate and, therefore, cannot provide efficient traceability capacity and holistic view of the supply chain.关键词: Internet of Things;Blockchain;Shrimp supply chain;Traceability;Export
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Strepparava D.;Nespoli L.;Kapassa E.;Touloupou M.;Katelaris L.;Medici V.;
Energy ReportsVolume 8, Issue , 2022, PP 99-113
摘要: The adoption of blockchain technology is emerging as a promising approach in managing decentralized local energy markets (LEM). In this study we analyze the issues related to the deployment of a blockchain-based LEM on devices as much as possible similar to modern smart meters. The presented LEM is based on an automated market-making mechanism. Buying and selling prices are dynamically determined by the amount of energy consumed and produced within a local energy community. We implemented the ma关键词: Blockchain;Energy market;Automated market making;Mechanism design
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摘要: A deeper decarbonization perspective is undergoing with the increasing engagement of new distributed players and the deployment of innovative behind-the-meter flexibility services. Peer-to-Peer (P2P) trading has emerged as an innovative mechanism to foster the direct energy sharing among multi-level market players with pre-determined responsibility and privacy. However, compared with other P2P assets trading, P2P energy trading is facing huge challenges in achieving a large-scale commercializati关键词: P2P energy trading;Blockchain;IoT;Flexibility services;P2P energy society;Inter-operative marketplaces
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摘要: Power data transaction is significant to the benefit increment of power enterprises and revitalization of social resources. Blockchain has a wide application prospect in data trading, but its concrete implementation faces many difficulties. This article proposes an obstacle analysis framework to understand the barriers of application of blockchain technology in power data trading, aiming to provide a decision-making guidance and management suggestions to relevant personnel. Firstly, an obstacle 关键词: Power data trading;Blockchain;Obstacle analysis;DEMATEL–ISM;Clustering algorithm;Fuzzy environment
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摘要: Blockchain technology is considered to be a disruptive technology that has real potential for change after steam engines, electricity, and the Internet. However, in terms of power generation, the current level of hydropower development in my country is only 39%. Compared with developed countries, there is still a big gap and a high development space. This article proposes a research on the application of blockchain technology in smart sustainable energy business models, studies the conversion pa关键词: Blockchain technology;Transformation theory;Multi-level analysis;System dynamics
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摘要: As a representative of clean energy, photovoltaic is expected to become a major supplier of electricity in the future. The combination of electric vehicle (EV) battery and charging station provides a feasible way to promote the effective consumption of photovoltaic. However, the efficiency of mobile power supply is limited by information asymmetry and security problems, and it is urgent to optimize the distribution process. Firstly, the article introduces the energy blockchain to improve the sec关键词: Energy blockchain;Photovoltaic-energy storage-charging supply chain;Electric vehicle;Distribution optimization of mobile power;NSGA-II
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Journal
摘要: Industrial applications often require federated cloud services from multiple providers to improve reliability and flexibility. Traditional selection methods through auctions usually involve a centralized auctioneer to coordinate the auction procedure. Blockchain and smart contracts provide a decentralized mechanism to automate the cloud auction process; however, existing solutions fail in the selection of the most suitable providers and the violation detection of the signed auction agreements, w关键词: Blockchain;Auction;Federated cloud service;Quality of service;Game theory;Trustworthy
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Journal
摘要: In this paper, we address the problem of behavior prediction for task allocation in blockchain-based crowdsourcing framework. Centralized crowdsourcing frameworks complement workers’ reputations with predicted behavior, through Machine Learning (ML) models, to improve the task allocation performance and maintain worker engagement. Existing blockchain-based crowdsourcing frameworks allocate tasks to workers using reputation solely, which neglects the impact of a task’s context on the worker’s beh关键词: Machine Learning;Blockchain;Behavior;Crowdsourcing;Smart contract;Bagged Trees
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摘要: The modern digitalization trends have totally transformed business practices and business models. Blockchain as a distributed technology makes possible the basic structure of a database with a combination of data blocks and hash chains. Using distributed software architecture and advanced computation, blockchain might change the method of data exchange among chain actors. Blockchain causes administration of a network in peer-to-peer and decentralized form; and influences the way of data exchange关键词: Blockchain;Corporate performance;Corporate governance;New firms
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摘要: The blockchain-assisted swarm robotics system, as an emerging distributed multi-robot system, has been widely discussed and studied for its outstanding advantages in secure communication, data logging and consensus achievement. Due to faults, formation changes, and obstructions, the network topology and communication rate change in the process of multi-robot collaboration, which inevitably affect the stability and operation efficiency of the swarm robotics system. However, few studies have quant关键词: 00-01;99-00;Swarm robotics system;Robot;Formation optimization;Energy balance;Blockchain technology;Optimization algorithm
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摘要: Blockchain eliminates the need for trusted third-party intermediaries in business by enabling decentralised architecture design in software applications. However, the vulnerabilities in on-chain autonomous decision-makings and cumbersome off-chain coordination lead to serious concerns about blockchain’s ability to behave in a trustworthy and efficient way. Blockchain governance has received considerable attention to support the decision-making process during the use and evolution of blockchain. 关键词: Blockchain;Governance;Decision rights;Accountability;Incentive;Ecosystem
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摘要: The emergence of blockchain technology is reshaping several aspects of economies, opening a wider spectrum for the research communities, and making it critical to conduct studies that comprehensively analyze this body of knowledge. From the Web of Sciences' database, a bibliometric study using VOS viewer and biblioshiny tool is provided on the evolving research on blockchain technology in finance. Blockchain in finance has provided enabled applications such as tokens, initial coin offerings, cro关键词: Blockchain technology;Finance;Bibliometric-based evaluation;VOS viewer
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Journal
Filatovas Ernestas;Marcozzi Marco;Mostarda Leonardo;Paulavičius Remigijus;
Expert Systems With ApplicationsVolume 204, Issue , 2022, PP
摘要: Blockchain is one of the most disruptive technologies introduced in Bitcoin, which engaged great attention from the industry and academia and determined a rapid growth of other Distributed Ledger Technologies (DLTs). In the complex architecture of a DLT system, a consensus protocol plays a key role by ensuring that all participants agree on the data integrity without any central authority. A wide range of consensus protocols have been designed with different concepts and properties (e.g., lower 关键词: Distributed Ledger Technology (DLT);Blockchain;Consensus protocol selection;Multi-Criteria Decision-Making (MCDM)
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摘要: Fair selection of community members’ transactions in blockchain-based technologies, especially in finance, is essential and vital. Therefore, in this paper, a novel consensus model for fair selection of community members’ transactions through reputation models is presented as fair reputation-based consensus model (FRCM), so that all transactions of community members have the same weight and transactions are selected regardless of the transaction fee or the assets or computing power but based on 关键词: Blockchain;Consensus;Reputation model;Fair selection
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摘要: Conversation systems play an important role in the research and development of multidomain systems, in which the number of conversations increases rapidly with the number of domains. Multiple experts must maintain these conversation interactions, otherwise experts from different domains are unable to interact properly. For this reason, ensuring secure and efficient cooperation between different experts has become a serious issue that needs to be resolved. This study proposes a hybrid consensus a关键词: Consensus algorithm;Master–slave;Blockchain;Multidomain;Conversation system
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摘要: The electricity trading plan made by the users in the microgrid day-ahead market (DAM) contains the electricity consumption information of the future day. Aiming at the problem that the leakage of electricity consumption information threatens the privacy security of users and the leakage of electricity trading plan destroys the fairness of the DAM, a privacy protection scheme for electricity transactions in microgrid DAM based on consortium blockchain is proposed. Firstly, the scheme is based on关键词: Microgrid day-ahead market;Electricity transaction;Privacy protection;Certificateless signcryption;Consortium blockchain
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摘要: With the extensive application of the Internet of Things (IoT), multi-domain IoT appears as the additional coordination and control ability of IoT. However, the emerging multi-domain IoT suffers from some security challenges, such as insider threats and cross-domain data exchange issues. In this paper, we propose a data exchange model for the multi-domain IoT environment driven by blockchain, addressing expensive cross-domain access control and low data exchange throughput issues. At the core of关键词: Multi-domain IoT;Data exchange;Cross-domain access control;Throughput optimization;Domain-as-a-shard;Blockchain
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摘要: 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 secur关键词: Anomaly detection;Blockchain;Cyber-Physical Systems (CPSs);Digital Twins (DTs);Industrial Control Systems (ICSs);Internet of Things (IoT);Industry 4.0
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摘要: Knowledge fusion can be used for global knowledge sharing and maintenance, and it has proven to benefit the performance of conversation systems. In the process of knowledge fusion in conversation systems, knowledge and contributions from multiple experts are easily tampered with, which results in biases in fusion results and their incentives. Blockchains promise tamper-proof, secure, and transparent systems. This study explores the feasibility and effectiveness of knowledge fusion based on block关键词: Decentralized knowledge fusion;Conversation system;Blockchain;Smart contract;Trustworthy
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