【Author】 Li, Tian Wang, Huaqun He, Debiao Yu, Jia

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-核心技术-智能合约

【Abstract】The Internet of Things (IoT) devices possessed by individuals produce massive amounts of data. The private data onto specific IoT devices can be combined with intelligent platform to provide help for future research and prediction. As an important digital asset, individuals can sell private data to get rewards. Problems, such as privacy, security, and access control prevent individuals from sharing their private data. The blockchain technology is widely used to build an anonymous trading system. In this article, we construct a blockchain-based privacy-preserving and rewarding private data-sharing scheme (BPRPDS) for IoT. A privacy issue worth considering is that the malicious cloud server may establish a behavior profile database of data users (DUs). In the case of anonymity, the transactions of private data sharing are easy to cause disputes. When anonymous DUs are framed, it is hard to protect their rights. With the help of the deniable ring signature and Monero, we realize the behavior profile building prevention and nonframeability of BPRPDS. At the same time, we utilize the licensing technology executed by smart contracts to ensure flexible access control of multisharing. The proposed BPRPDS is provably secure. Performance analysis and experimental results show that BPRPDS is efficient and practical.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchains; Security; Data privacy; Smart contracts; Access control; Internet of Things; Servers; Anonymity; blockchain; data sharing; ring signature

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1109/JIOT.2022.3147925

【Author】 Weerapanpisit, Ponlawat Trilles, Sergio Huerta, Joaquin Painho, Marco

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-协同技术-物联网

【Abstract】The Internet of Things (IoT) allows an object to connect to the Internet and observe or interact with a physical phenomenon. The communication technologies allow one IoT device to discover and communicate with another in order to exchange services, in a similar way to what humans do in their social networks. Knowing the reputation of another device is important to consider whether it is trustworthy before establishing a new connection and thus, avoid possible unexpected behaviors as a consequence. Trustworthiness, as a property of a device, can be affected by different factors including its geographical location. Hence, this research work proposes an architecture to manage reputation values of end devices in an IoT system based on the area where they are located. A cloud-fog-edge architecture is proposed, where the fog layer uses the Blockchain technology to keep the reputation management system consistent and fault tolerant across different nodes. The location-based part of the system was done by storing geographical areas in smart contracts (coined as geospatial smart contracts) and making the reputation values subject to different regions depending on the geographical location of the device. To reduce the complexity of the spatial computation, the geographical data are geocoded by either one of two different spatial indexing techniques. This work also introduced two different structures for storing geocoded areas based on either cell list or tree structure. Finally, three experiments to test the proposed architecture are presented, to deploy the architecture in IoT devices, and to compare the two geocoding techniques in smart contracts.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Computer architecture; Blockchains; Cloud computing; Internet of Things; Smart contracts; Indexing; Geospatial analysis; Blockchain; Internet of Things (IoT); location-based trust; spatial indexing

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 理论模型

【DOI】 10.1109/JIOT.2022.3147478

【Author】 Zou, Shihong Xi, Jinwen Xu, Guoai Zhang, Miao Lu, Yueming

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-协同技术-隐私计算

【Abstract】With the advent of the Internet of Things (IoT), crowdsensing, as a new emerging application of the IoT that employs ubiquitous mobile users with smartphones for data collection and processing, has further deepened our knowledge. However, the problems of the current crowdsensing systems regarding system security, user privacy, and user payment (UP) raise serious privacy and security concerns, which affect participants' adoption of the system. The Blockchain technology allows for nondeterministic multiple parties to interact with each other anonymously in a network that is not fully trusted. In this article, we propose a new decentralized crowdsensing system, called CrowdHB. Unlike other blockchain-based crowdsensing systems, CrowdHB adopts a hybrid blockchain architecture and uses smart contracts to achieve location privacy preservation and ensure data quality while improving the system performance. Furthermore, to optimize task assignments to mobile users, we propose a location privacy-preserving optimization mechanism (LPPOM) and the approach of consistency optimization (ACO) to achieve a tradeoff between user privacy and system performance. The extensive experimental results show that the proposed CrowdHB outperforms the other crowdsensing systems in terms of task success rate and performance for a large number of mobile users and tasks.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Crowdsensing; Privacy; Blockchain; Task analysis; Security; Internet of Things; Optimization; Consistency; crowdsensing; hybrid blockchain; Internet of Things (IoT); location privacy preservation

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 理论模型

【DOI】 10.1109/JIOT.2021.3084937

【Author】 Alrubei, Subhi M. Ball, Edward Rigelsford, Jonathan M.

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-核心技术-分布式存储

【Abstract】This article presents a distributed and decentralized architecture for the implementation of distributed artificial intelligence (DAI) using hardware platforms provided by the Internet of Things (IoT). A trained DAI system has been implemented over IoT, where each IoT device acts as one or more of the neurons within the DAI layers. This is accomplished by the utilization of decentralized, self-managed blockchain technologies that allow trusted interactions and information to be exchanged between distributed neurons. The platform was built and customized to be used within the IoT system, and it is capable of handling DAI-related tasks. A new consensus mechanism based on Proof of Authority (PoA) and Proof of Work (PoW) has been designed and implemented, along with bespoke block and transaction formats. The proposed architecture was analyzed, implemented, and tested using a dedicated testbed with low-cost IoT devices. A quantitative measurement and performance evaluation of the system based on a real-world IoT application was conducted. The implemented DAI is found to have an accuracy of 92%-98%, with an energy cost of 0.12 joules (J) when utilizing a Raspberry Pi to run one neuron. The measured hash per joule (h/J) when using a Raspberry Pi for mining is 13.8 Kh/J compared to 54 Kh/J using an ESP32. The results showed that it is feasible to implement a DAI system utilizing the IoT hardware platform while maintaining the system's accuracy. The integration of the blockchain has added an element of security and trust to the data and the interaction between system components.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Artificial intelligence; Internet of Things; Cloud computing; Computer architecture; Distributed databases; Data mining; Blockchain; consensus mechanisms; distributed artificial intelligence (DAI); Internet of Things (IoT); performance evaluation

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 理论模型

【DOI】 10.1109/JIOT.2021.3064176

【Author】 Chowdhury, Mohammad Jabed M. Usman, Muhammad Ferdous, Md Sadek Chowdhury, Niaz Harun, Anam Ibna Jannat, Umme Sumaya Biswas, Kamanashis

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-核心技术-共识机制

【Abstract】Peer-to-Peer (P2P) energy trading platforms are being actively designed, tested, and operated by engineers, power distribution companies, and prosumers. The assurance of the accountability of the conduct of different stakeholders through a robust trust management mechanism is imperative in such platforms. The usage of blockchain, as an underlying technology, can ensure numerous properties, such as immutability, transparency, and traceable execution of transactions, in addition to ensuring trust establishment among different entities of the system. Few blockchain-based decentralized energy trading platforms have been designed in the literature to build trust about the platform and among prosumers. However, none of these proposals have considered human-in-the-loop in the trust establishment process. Moreover, these solutions have considered trust only at a particular layer of the blockchain, such as at the application or consensus layer. To bridge this gap, this article presents a novel cross-layer trust-based consensus protocol that considers human-in-the-loop and employs fuzzy logic to address the issue of vagueness of trust values by offering human interpretable trust level. The experimental results demonstrate the efficiency and effectiveness of our proposed protocol in comparison to established consensus mechanisms. The analysis also shows the protocol is immune against selfish mining, 51% and Sybil attacks.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Peer-to-peer computing; Internet of Things; Consensus protocol; Cryptography; Proposals; Fuzzy logic; Task analysis; Blockchain; cross-layer; energy trading; fuzzy logic; trust

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1109/JIOT.2021.3063710

【Author】 Chang, Jian Ni, Junpei Xiao, Jiang Dai, Xiaohai Jin, Hai

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-核心技术-智能合约

【Abstract】With customization of demands and functionalities, diverse blockchain systems are integrated with IoT in different application scenarios, forming a multichain environment. Multichain interoperability has become a crucial emerging issue, i.e., different blockchain systems are difficult to interact with each other credibly and efficiently. It further leads to isolated data islands across multichain. Therefore, it is of significant importance to facilitate data sharing among multichain systems. Toward achieving this, there are two main challenges. First, data across multiple blockchains must be shared reliably to meet the tamper-proof merits of blockchain technology. Second, we must control the data access process in a fine-grained way to protect sensitive data and user privacy. This article proposes SynergyChain, a multichain framework to enable reliable data sharing with controllable data access. By aggregating the data from multiple blockchains and reorganizing it in SynergyChain, we can achieve data reliability with the verification. Meanwhile, SynergyChain provides hierarchical access control based on smart contracts, making access control automated and credible. Experiments show that SynergyChain can support data sharing reliably and efficiently and reduce data query latency compared with multichain data requesting sequentially.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Access control; Reliability; Internet of Things; Data privacy; Smart contracts; Process control; Access control; blockchain; data sharing; smart contract

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1109/JIOT.2021.3061687

【Author】 Bai, Fenhua Shen, Tao Yu, Zhuo Zeng, Kai Gong, Bei

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-协同技术-边缘计算

【Abstract】Owing to the technology of 5G and beyond, collaborative edge computing-as-a-service has enabled trillions of interconnected edge applications. It has also become a prospective paradigm for providing computing services by offloading computationally intensive assignments to mobile-edge servers or fog nodes due to terminals constrained computing and caching resources. Nevertheless, in this process, trust of computing-as-a-service scheduling and edge data sharing in heterogeneous systems is an unavoidable challenge of paramount importance. As a powerful tool that addresses security issues, blockchains can ensure the trustworthiness and irreversibility of computing data by consensus mechanisms. However, in the Industrial Internet of Energy (IIoE), the storage burden of a single blockchain has increased. Therefore, from the perspective of a stable real-time operation, we propose a multiedgechain structure that accommodates thousands of edge data and promotes on-chain data efficiency to achieve cross-chain edge data sharing for heterogeneous blockchain systems. Moreover, aiming at the profits of computing resource scheduling in the IIoE, a two-stage Stackelberg game strategy with an optimal scheduling demand and reward is provided considering the edge user's preferences and risk factors. Finally, the simulation results verify the superiority of the proposed scheme, regarding the game equilibrium, utility optimization, and data sharing efficiency of cloud-edge collaboration.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Processor scheduling; Job shop scheduling; Games; Edge computing; Task analysis; Cloud computing; Blockchain; cross-chain; edge computing; Industrial Internet of Energy (IIoE); noncooperative games

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1109/JIOT.2021.3058125

【Author】 Liang, Wei Xiao, Lijun Zhang, Ke Tang, Mingdong He, Dacheng Li, Kuan-Ching

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链治理-技术治理-区块链安全

【Abstract】Blockchain technology is rapidly changing the transaction behavior and efficiency of businesses in recent years. Data privacy and system reliability are critical issues that is highly required to be addressed in Blockchain environments. However, anomaly intrusion poses a significant threat to a Blockchain, and therefore, it is proposed in this article a collaborative clustering-characteristic-based data fusion approach for intrusion detection in a Blockchain-based system, where a mathematical model of data fusion is designed and an AI model is used to train and analyze data clusters in Blockchain networks. The abnormal characteristics in a Blockchain data set are identified, a weighted combination is carried out, and the weighted coefficients among several nodes are obtained after multiple rounds of mutual competition among clustering nodes. When the weighted coefficient and a similarity matching relationship follow a standard pattern, an abnormal intrusion behavior is accurately and collaboratively detected. Experimental results show that the proposed algorithm has high recognition accuracy and promising performance in the real-time detection of attacks in a Blockchain.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Intrusion detection; Security; Data models; Clustering algorithms; Anomaly detection; Analytical models; Blockchain; data fusion; intrusion detection; similarity matching; weighted combination

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1109/JIOT.2021.3053842

【Author】 Xu, Shilin Guo, Caili Hu, Rose Qingyang Qian, Yi

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链应用-实体经济-交通领域

【Abstract】With the emergence of computation-intensive vehicular applications, computation offloading based on mobile-edge computing (MEC) has become a promising paradigm in resource-constrained vehicular cloud networks (VCNs). However, when doing computation offloading in a VCN, malicious service providers can cause serious security concerns on the content offloading. To address that in this article, a blockchain-based secure computation offloading scheduling scheme is proposed. It embraces the blockchain-based trust management paradigm and smart contract-enabled deep reinforcement learning (DRL) algorithm. As for the trust management, the long-term reputation and short-term trust variability are jointly considered. Specifically, a novel three-valued subjective logic (3VSL) scheme is adopted to obtain a more comprehensive reputation, and the statistics of behavioral transitions can provide a short-term trust variability to timely capture the malicious behaviors. In addition, to securely update, validate, and store the trust information, we propose a hierarchical blockchain framework that comprises vehicular blockchain, roadside unit (RSU) blockchain, and cloud blockchain. Furthermore, a smart contract-enabled DRL algorithm is proposed to implement the secure and intelligent computation offloading scheduling in a VCN. Simulations are conducted to verify the effectiveness of the proposed scheme.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Trust management; Smart contracts; Computational modeling; Task analysis; Cloud computing; Wireless communication; Blockchain; computation offloading; deep reinforcement learning (DRL); reputation; smart contract; vehicular cloud networks (VCNs)

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1109/JIOT.2021.3054866

【Author】 Strebinger, Andreas Trciblmaier, Horst

【Source】JOURNAL OF HOSPITALITY AND TOURISM TECHNOLOGY

【影响因子】5.576

【主题类别】

区块链应用-实体经济-其他

【Abstract】Purpose Blockchain technology is predicted to revolutionize the tourism and hospitality industry through peer-to-peer hotel bookings with little or no involvement of intermediaries. Outstanding features of this technology are its distributed form of storing data, its collaborative way of identifying the "true state" of a system and the immutability of data. These features may lead to a perceived loss of controllability among travelers. Based on the Agentic Theory of Human Behavior, the purpose of this study is to propose that this assumed loss of control matters more to travelers with an individualistic rather than a collectivistic predisposition. Design/methodology/approach In two studies (n = 475 and n = 196) using verbal scenarios, this study manipulates the perceived controllability of a blockchain-enabled hotel booking app by varying the number of additional services linked to the app. This study tests for the interaction of controllability with individual-level measures of individualistic versus collectivistic (I-C) predisposition. Findings Collectivistic travelers are more willing than individualistic travelers to use blockchain technology for their hotel bookings. This effect can be mitigated by offering additional services that give individualistic travelers an enhanced sense of "being in control". Practical implications Blockchain-enabled applications facilitating direct hotel bookings without any additional intermediary services are more readily accepted by travelers with a collectivistic mindset. Blockchain applications addressing individualistic travelers require added services that establish a sense of controllability. Originality/value To the best of the authors' knowledge, this paper is the first to investigate the interaction of I-C predisposition with perceived controllability in tourism and hospitality. Furthermore, it is the first in the technology-acceptance literature to test this interaction using individual-level measures of I-C predisposition and an experimental manipulation of perceived controllability.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Culture; Individualistic; Collectivistic; Self-construal; Technology acceptance; Controllability; Agentic theory of human behavior

【发表时间】

【收录时间】2022-09-06

【文献类型】 实证数据

【DOI】 10.1108/JHTT-10-2021-0293

【Author】 Mani, Vinodhini Ghonge, Mangesh M. Chaitanya, Nosina Krishna Pal, Om Sharma, Moolchand Mohan, Senthilkumar Ahmadian, Ali

【Source】COMPUTERS & ELECTRICAL ENGINEERING

【影响因子】4.152

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】The healthcare business can benefit from the Internet of Things (IoT) in terms of data manage-ment and transfer. Patient health data can be acquired locally from devices that can be used to make real-time decisions based on the data. For many years, several hospitals have deployed IoT in their patient rooms and their body parts. IoT devices could be vulnerable to hacking due to a lack of authentication and encryption policies, posing serious hazards to consumers. As a result, blockchain is useful for securing and proving transactions in the IoT. As a result, it is proposed that the problem be solved using Fog Computing (FGC), Edge Computing, and blockchain. Based on FGC technology, models of analysis, and a signature-encryption algorithm (SE), a three-tiered architecture is employed for the identification, verification, and identification of healthcare IoT devices. The generated findings are used to assess the suggested innovative SE algorithm. We discovered that FGC-based blockchain performed better for detecting malicious nodes in terms of packet error rate, reliability, and throughput when compared to cloud settings and other environments.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Cloud computing; Fog Computing; Patient Health Record; Security; Internet of Things

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 实证数据

【DOI】 10.1016/j.compeleceng.2022.108202

【Author】 Al-Rakhami, Mabrook Al-Mashari, Majed

【Source】BUSINESS PROCESS MANAGEMENT JOURNAL

【影响因子】3.715

【主题类别】

区块链技术-协同技术-物联网

【Abstract】Purpose This work focuses on the interoperability of the blockchain from the viewpoint of its technological evolution in the wider context of supply chain systems. Interoperability concerns the most since it is among the most persevering problems in the process of blockchain adaptation. The study aims to trace and pinpoint all the different methods that affect the interoperability of blockchains, gather all the obtainable evidence and recognize gaps in between the applicable approaches mentioned across the contemporary academic literature. Design/methodology/approach An analysis is done of seven interoperability approaches based on their relevance, practical usefulness and adoption processes concerning the blockchain. Mainly, this work examines interoperability from several different perspectives. An interoperability modular decomposition via a layered model has been defined through the level of conceptual interoperability (LCIM) and level of information system interoperability (LISI), which represent the most popular metrics with regard to assessing the level of interoperability from a qualitative level. Findings Generally, the findings of this work are directed in two major aspects: Firstly, it expands the research around blockchain technology interoperability by providing crucial background information and pinpointing important connotations for both industrial and academic environments. It also defines and analyzes several different approaches toward the blockchain platform's interoperability. Secondly, it also identifies and proposes several scenarios that take advantage of multiple blockchain application approaches, highlights various issues and challenges to the evolution of interoperability standards and solutions and indicates the desired areas of further research. Originality/value An essential aspect of the originality of this paper is that, contrary to other work contributions, this work summarized the different interoperability approaches for blockchain in supply chain systems. Mainly, seven approaches were discussed for practitioners and researchers, and the open issues and future research direction were considered.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Supply chain management; Interoperability

【发表时间】

【收录时间】2022-09-06

【文献类型】 实证数据

【DOI】 10.1108/BPMJ-04-2022-0207

【Author】 Karaata, Mehmet Hakan Alrashed, Ebrahim Allaho, Mohammad

【Source】COMPUTING

【影响因子】2.420

【主题类别】

区块链技术-协同技术-边缘计算

【Abstract】In this paper, we propose the first self-stabilizing c-wave algorithm for broadcasting large size messages from multiple initiator processes such that every process receives at least one of these messages broadcast by the initiators. The proposed algorithm first splits each message into a sequence of message shares and then broadcasts the message shares in a pipelined manner in order. We then present an improved maximally concurrent self-stabilizing c-wave algorithm called dynamic clusteringc-wavealgorithm that constructs dynamic broadcast trees by allowing a process to dynamically change its parent to a neighbouring process with the most message shares to implement a maximally concurrent broadcasting of large size messages. The improved algorithm is maximally concurrent in the sense that a process is allowed to receive a message share from any neighbouring process with a larger sequence of message shares than its current parent from which it receives message shares in the broadcast trees constructed by the initiators when available. We implemented and experimentally evaluated the c-wave algorithm to compare its message propagation delay to those of the m and the k-wave algorithms. Simulation results show that the proposed algorithm significantly reduces the broadcast propagation delays compared to that of the m and the k-wave algorithms. The improvement is more evident over the m-wave algorithm. Solutions to global-snapshots, distributed broadcast and various synchronization problems can be solved efficiently using c-wave algorithms. In addition, the proposed algorithms have applications in blockchain, mobile wireless sensor networks, VANETs and military communication networks.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】c-wave; Distributed computing; Multi-node broadcast; m-wave; Self-stabilization; Wave algorithms

【发表时间】

【收录时间】2022-09-06

【文献类型】 理论模型

【DOI】 10.1007/s00607-022-01110-4

【Author】 Munagala, N. V. L. M. Krishna Rani, A. Daisy Reddy, D. V. Rama Koti

【Source】COMPUTER JOURNAL

【影响因子】1.762

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】Patients' medical data are extremely sensitive information during storage and transfer, and it needs the highest security level. Furthermore, these records must frequently be linked to patient medical data, and then the linked medical data are securely transmitted to the healthcare center. In this study, a Blockchain-Based Traceable Data Sharing method is proposed to securely transfer the medical data. A Paillier homomorphic encryption method is used to prevent data theft or attacks from occurring in the cloud as a result of the transfer of medical data there. It prevents intravenous third parties, which executes arithmetic operations on the ciphertext. Then the encrypted data are stored in the cloud and to remove clone nodes in the gateway, a software-defined networking technology is introduced. Then a Blockchain-Based Traceable Data Sharing is proposed to ensure data privacy and authenticity while maintaining data privacy at the point of data transmission. Data are then encrypted using a new Enhanced Cipher Text-Policy Encryption Attribute-based Encryption (E-CP-ABE). Private blockchain transfers are carried out on the chain, supporting fine-grain access control with flexible access policies and creating a private key in E-CP-ABE. The presented technique is executed in Matlab software of version R2020a. The performance parameters are encryption, and decryption time, mean square error (MSE), peak signal-to-noise ratio (PSNR), sensitivity, respectively. The encryption process function is nearly 8% superior than the existing methods and the decryption time is 14% greater than other methods. As a result, this study shows that the research approach outperformed in terms of encryption time and decryption time, as well as PSNR, MSE, and sensitivity. This technique outperforms other state-of-the-art algorithms in terms of imperceptibility and robustness against various attacks. Consequently, this approach is more reliable than previous methods for the transmission of medical data.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】healthcare data; Paillier homomorphic encryption system; software-defined networking technological (SDN); blockchain-based traceable data sharing; secure transmission; enhanced cipher text-policy encryption attribute-based encryption

【发表时间】

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1093/comjnl/bxac113

【Author】 Yokoyama, Yura

【Source】ECONOMIC ANTHROPOLOGY

【影响因子】1.236

【主题类别】

区块链治理-市场治理-数字货币

【Abstract】Bitcoin, regarded as a decentralized currency of the future as well as a digital gold, faces various challenges, such as scalability, the geographical concentration of mining, its politically informed design and history, its high market volatility, and inequalities in the proportion of accumulation. However, the number of Bitcoin owners has risen exponentially, and relevant socioeconomic and political groups have become increasingly diverse. Consequently, this article argues that what has contributed to the global diffusion of Bitcoin and its embeddedness in different human societies is its practical indeterminacy. Practical indeterminacy characterizes the fundamentally undefinable, indeterminate nature of Bitcoin's value, as it can change its form depending on who it encounters. In terms of temporality, practically indeterminate Bitcoin can urge potential owners and users to compare their pasts and futures, thus driving them to perceive, own, and use Bitcoin for their own purposes. By paying attention to the agency of Bitcoin, practical indeterminacy explains how individuals form their own relations with Bitcoin and how these relations lead to Bitcoin's further sociocultural embeddedness. The proliferation of such a wide range of human-Bitcoin relations shows that Bitcoin is not only monetary but also cultural, as it offers different meanings to users and owners.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Bitcoin; Money; Practical Indeterminacy; Temporality; Digital Anthropology

【发表时间】

【收录时间】2022-09-06

【文献类型】 观点阐述

【DOI】 10.1002/sea2.12257

【Author】 Bansod, Smita Ragha, Lata

【Source】SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES

【影响因子】1.214

【主题类别】

区块链技术-协同技术-隐私计算

【Abstract】Due to the pandemic, most of the personal transactions relating to finance, commerce and healthcare services have gone online making privacy preservation a critical requirement. Consequently, privacy has been made a critical parameter in Data Protection Regulations leading to the search for such a privacy compliant system which is also resilient to attacks. A detailed analysis of the Blockchain technology, which is becoming popular for secure applications in the finance sector, indicates that there are several challenges relating to user identity, transaction linkability, crypto-keys management, data privacy, usability, interoperability, and post- quantum compliance of privacy regulations which need to be resolved before its widespread adoption. Being a decentralised system, there is a need to analyse the vulnerability to attacks of each layer in the Blockchain architecture. This paper discusses the development flow of some of the privacy enhancement mechanisms like ZKPs, SMPC, Ring signatures, Mixing, Homomorphic Encryption and quantum resilient computing, bringing out their features and lacunae. There is a detailed discussion of the privacy mechanisms adopted by blockchain platforms like ZCash, Zerocoin, Hyperledger, Wanchain, Coin Party, Monero, Cryptomate, MixCoin, Coinshuffle, PICNIC and New Hope. Every platform has some limitation or the other and it is essential that researchers come out with mitigation steps for the existing mechanisms and come up with improved new Privacy Enhancement Techniques. One such architecture using PET has been proposed.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Privacy; blockchain; zero knowledge proof; ring signature; multiparty computation; mixing; homomorphic encryption; quantum computing; PET

【发表时间】2022

【收录时间】2022-09-06

【文献类型】 综述

【DOI】 10.1007/s12046-022-01931-1

【Author】 Bajar, Karthik Kamat, Aditya Shanker, Saket Barve, Akhilesh

【Source】SMART AND SUSTAINABLE BUILT ENVIRONMENT

【影响因子】0.000

【主题类别】

区块链应用-实体经济-供应链

【Abstract】Purpose In recent times, reverse logistics (RL) is gaining significant traction in various automobile industries to recapture returned vehicles' value. A good RL program can lower manufacturing costs, establish a green supply chain, enhance customer satisfaction and provide a competitive advantage. However, reducing disruptions and increasing operational efficiency in the automobile RL requires implementing innovative technology to improve information flow and security. Thus, this manuscript aims to examine the hurdles in automobile RL activities and how they can be effectively tackled by blockchain technology (BCT). Merging BCT and RL provides the entire automobile industry a chance to generate value for its consumers through effective vehicle return policies, manufacturing cost reduction, maintenance records tracking, administration of vehicle information and a clear payment record of insurance contracts. Design/methodology/approach This research is presented in three stages to accomplish the task. First, previous literature and experts' opinions are examined to highlight certain factors that are an aggravation to BCT implementation. Next, this study proposed an interval-valued intuitionistic fuzzy set (IVIFS) - decision-making trial and evaluation laboratory (DEMATEL) with Choquet integral framework for computing and analyzing the comparative results of factor interrelationships. Finally, the causal outline diagrams are plotted to determine the influence of factors on one another for BCT implementation in automobile RL. Findings This study has categorized the barriers to BCT implementation into five major factors - operational and strategical, technical, knowledge and behavioral, financial and infrastructural, and government rules and regulations. The results revealed that disreputable technology, low-bearing capacity of IT systems and operational inefficiency are the most significant factors to be dealt with by automobile industry professionals for finer and enhanced RL processes utilizing BCT. The most noticeable advantage of BCT is its enormous amount of data, permitting automobile RL to develop client experience through real-time data insights. Practical implications This study reveals several factors that are hindering the implementation of BCT in RL activities of the automobile industry. The results can assist experts and policymakers improve their existing decision-making systems while making an effort to implement BCT into the automobile industry's RL activities. Originality/value Although there are several studies on the benefits of BCT in RL and the adoption of BCT in the automobile industry, individually, none have explicated the use of BCT in automobile RL. This is also the first kind of study that has used IVIFS-DEMATEL with the Choquet integral framework for computing and analyzing the comparative results of factor interrelationships hindering BCT implementation in automobile RL activities.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Supply chain management; Reverse logistics; Automobile industry; Industry 4; 0; Blockchain technology; Distributed ledger

【发表时间】

【收录时间】2022-09-06

【文献类型】 理论模型

【DOI】 10.1108/SASBE-11-2021-0203

【Author】 Kiu, Mee San Lai, Kai Wen Chia, Fah Choy Wong, Phui Fung

【Source】SMART AND SUSTAINABLE BUILT ENVIRONMENT

【影响因子】0.000

【主题类别】

区块链应用-实体经济-建筑领域

【Abstract】Purpose The digitization of electronic document management (EDM) in the construction industry has become more common in nature with the evolution of technology. However, there are still some limitations in EDM in the common data environment which can be improved with the integration of blockchain technology. The purpose of this paper is to identify the limitations of the current EDM system in the construction industry, to determine the potential of blockchain in improving the EDM system in the construction industry and challenges towards blockchain-based EDM. Design/methodology/approach Semi-structured interviews were conducted with nine (9) respondents with background from the construction industry and blockchain expertise. Content analysis was used to analyze the primary data. Findings Current EDM system in the construction industry possessed limitations such as system maturity, high cost, slow adoption of technology and security concerns. Blockchain is able to make improvements in the current EDM system in terms of data integrity, data tracking, data immutability, data security, data trustability, and data accountability. Several challenges such as costs, blockchain scalability and industry knowledge, industry culture and hardware need to overcome prior blockchain-based EDM systems can be widely applied in the construction industry. Originality/value The research findings provide insight on future EDM in the construction industry and aids future research in this field.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain technology; Electronic document management (EDM); Common data environment (CDE); Building information modelling (BIM); Construction management; Construction industry

【发表时间】

【收录时间】2022-09-06

【文献类型】 观点阐述

【DOI】 10.1108/SASBE-12-2021-0231

【Author】 Polyzos, George C.

【Source】INTERNATIONAL JOURNAL OF WIRELESS INFORMATION NETWORKS

【影响因子】0.000

【主题类别】

区块链技术-核心技术-智能合约

【Abstract】We propose an approach for automated, potentially very fine-grain, spectrum transactions and marketplaces in order to flexibly and dynamically acquire spectrum rights in order to enable new applications and services also permitting the support of, or even guarantee, Quality-of-Service for ephemeral deployments. We describe both (multiple, by region or band) centralized marketplaces, based on traditional Information Technologies, and decentralized approaches, based on blockchains and smart contracts through either permissioneless or permissioned Distributed Ledger Technologies.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchains; Distributed ledger technologies; Ethereum; Hyperledger fabric; Spectrum auctions

【发表时间】

【收录时间】2022-09-06

【文献类型】 实验仿真

【DOI】 10.1007/s10776-022-00573-8

【Author】 Ahmad, Raja Wasim Al Khader, Walaa Jayaraman, Raja Salah, Khaled Antony, Jiju Swarnakar, Vikas

【Source】TQM JOURNAL

【影响因子】

【主题类别】

区块链应用-实体经济-质量管理领域

【Abstract】Purpose The purpose of this research is to study and analyze the literature that integrates Lean Six Sigma (LSS) approach with blockchain technology in different sectors for improved quality management. Design/methodology/approach This study presents a scoping review on the application of integrated LSS and blockchain technology in the manufacturing and healthcare sector. Further, the authors examined existing blockchain-based solutions on a variety of dimensions, including application area, technical approach, methodology, application scenario, various blockchain platforms, purpose, and monitoring parameters. The authors study LSS approaches in detail, as well as the key benefits that blockchain technology can enable. Finally, the authors discuss significant research problems to be addressed in order to develop a highly efficient, resilient, and secure quality management framework using blockchain technology. Findings It has been observed that the adoption of blockchain technology for quality management and assurance is influenced by several factors such as transaction execution speed, throughput, latency. Also, prior blockchain-based solutions have neglected to leverage the benefits of LSS methodologies for effective quality management. Originality/value This is the first study to explores the influence of blockchain technology on quality management and assurance in manufacturing and healthcare industry. Furthermore, prior research has not examined how integrating the LSS methodology with blockchain technology can aid in the control of product quality management.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Supply chain management; Product quality; Lean six sigma; Security; Ethereum

【发表时间】

【收录时间】2022-09-06

【文献类型】 综述

【DOI】 10.1108/TQM-06-2022-0181

【Author】 Rathee, Geetanjali Kumar, Akshay Kerrache, Chaker Abdelaziz Iqbal, Razi

【Source】IET SMART CITIES

【影响因子】

【主题类别】

区块链应用-实体经济-公共管理

【Abstract】Smart cities equipped with intelligent devices can enhance the lifestyle and quality of humans by automatically and collaboratively acting as a sustainable resource to the ecosystem. In addition, the technological advancement can be further empowered by interconnecting various types of technologies, such as IoT, Artificial Intelligence, drones and robotics which will clearly improve the Quality of Services, energy efficiency and connectivity to the overall system. The integration of drones hovering over smart cities with the other devices in the smart city network brings a lot of benefits. However, it can also lead to various security and privacy concerns in the network. The aim of this article is to put forward a secure and safe smart city communication environment by proposing a trust establishment scheme for the ad hoc Unmanned Aerial Vehicles network. In which, malicious devices can be traced and blocked by analysing and evaluating their historical interactions within the system and calculating their trust values. A behaviour-based and local trust value scheme is used to analyse the trust of each communicating device that is further associated with a blockchain distributed ledger. The proposed mechanism is measured over various networking and security metrics, including throughput, latency, accuracy and block updating compared to the existing state-of-the-art solutions.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】computer network security; information security and privacy; iot and mobile communications; smart cities applications

【发表时间】

【收录时间】2022-09-06

【文献类型】 理论模型

【DOI】 10.1049/smc2.12039