【影响因子】10.884
【主题类别】
区块链应用-实体经济-供应链
【Abstract】Recently, blockchain technology has greatly revolutionized industries by offering a variety of applications in various domains, including finance, healthcare, the food industry, and the supply chain. Blockchain generally refers to a secured, shared, distributed ledger comprising a list of transactions, which is not modifiable without reaching a consensus. Blockchain technology attempts to prepare the stage for smart networks for data mobility, which can remarkably make sustainable supply chain management (SSCM) more productive and transparent. Thus, numerous companies have either already started the implementation of this technology or are currently considering it in order to enhance their business quality. Therefore, in this paper, a new decision framework called the q-rung orthopair fuzzy set (q-ROFS)-entropy-rank sum-weighting method (RSWM)-multi-objective optimization with ratio analysis with the full multiplicative form (MULTIMOORA) is developed. In this approach, the q-ROF-entropy-RSWM is utilized to obtain the subjective and objective weights of critical success factors, and the MULTIMOORA model is used to assess the preferences of manufacturing firms to implement blockchain technology in SSCM. An empirical case study is taken to evaluate the critical success factors of implementing blockchain technology in SSCM. Also, comparison and sensitivity investigation are made to show the superiority of the developed framework.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain technology; Sustainable supply chain; Q -rung orthopair fuzzy sets; Entropy; MULTIMOORA; Rank -sum weight; Multi -criteria decision -making
【发表时间】2022
【收录时间】2022-09-12
【文献类型】 实证数据
【Author】 Yang, Lei Gao, Muyi Feng, Lipan
【影响因子】10.047
【主题类别】
区块链应用-实体经济-制造领域
【Abstract】Remanufacturers often sell remanufactured products via their own channels (i.e., competition mode) or manufacturers' channels with brand advantage (i.e., cooperation mode). Besides, blockchain improves consumers' perceived quality of remanufactured products by alleviating their concerns. We develop game models by considering the influences of brand advantage and blockchain. Findings show that the brand advantage has critical effects on the manufacturer's mode selection except for the remanufacturer, but blockchain influences both of their selections. Moreover, the remanufacturer may choose either cooperation or competition when the patent license fee is exogenous, but will only choose cooperation when the patent license fee is endogenous.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Remanufacturing supply chain; Mode selection; Patent license fee; Brand advantage; Blockchain
【发表时间】2022
【收录时间】2022-09-12
【文献类型】 实证数据
CCF-C
【影响因子】8.993
【主题类别】
区块链技术-协同技术-物联网
区块链技术-协同技术-云计算
【Abstract】Distributed Ledger Technology (DLT) driven blockchain is currently one of the most promising technology revolutions with enormous potential across a wide range of applications. Distributed ledger is essentially a distributed and encrypted database that can address several concerns pertaining to Internet security and trust with transparency. In fact, the scope of blockchain applications is broadening with each passing day. The exclusive features of safe and transparent data exchange provided by blockchain technology provide compelling arguments for its implementation in a variety of application scenarios. In this paper, we present the comprehensive view of blockchain and its related concepts. Though, there exists intensive research on these domains; however, these fields are still dealing with several security issues, data reliability and storage and scalability. Blockchain has emerged as a critical technology that can address these issues through its features like decentralization, transparency, immutability and auditability. Building trust in distributed systems without the need for authority is a technological advancement that can be well leveraged by domain, like, Internet of Things (IoT), cloud and social media. Technologies like IoT and Cloud computing can be perceived as the trivial ones to get benefitted from the blockchain. However, the integration of social media and blockchain can revolutionize the domains, like, content creating and sharing, fake news scourge, trademarking and rights management. In this paper, we illustrate the integration of blockchain with IoT, cloud and social media and the related issues and challenges. Moreover, we also show some of the major research works done in each domain.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】blockcahin; cloud; intelligent systems; IoT; social media
【发表时间】
【收录时间】2022-09-12
【文献类型】 观点阐述
【DOI】 10.1002/int.23032
【影响因子】6.793
【主题类别】
区块链应用-虚拟经济-金融领域
【Abstract】The literature gap in microfinance paradox of double bottom line (financial performance vs. outreach) has always been an interesting area of research. This paper proposes a theoretical model most suitable for Islamic Microfinance Institutions (MFIs) which enables Islamic MFIs' to operate together with the existing financial models compliant with Islamic Shariah Law. This model is based on a distributed verification/decision-making process that might be realized (but not necessary) through blockchain. Among the available distributed verification techniques, blockchain technology is an attractive emerging computing paradigm due to its decentralized, immutable, shared, and secure data structure characteristics. This model proposes three significant propositions. First, sharing information through blockchain will allow a transparent network in MFI operations, which will raise confidence for donors resulting in a causal effect of a relatively lower profit rate to be charged by the MFIs. Second, the consensus mechanism will enable risk-sharing, a character of Islamic finance; thus, the MFIs will operate without any collateral for low-risk firms. Third, the double bottom line of MFIs' long-lasting paradox would be solved. As for practical implication of this proposed model, the causal impact of lower cost investment by the lenders would increase social welfare because of no collateral and no initial wealth requirement. The proposed model proposes a credit rationing approach where profit can be negative. No collateral will be used when calculating the creditworthiness of a borrower.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; Islamic microfinance; Double bottom line; Distributed verification
【发表时间】2022
【收录时间】2022-09-12
【文献类型】 理论模型
【Author】 Nam Vu Ghadge, Abhijeet Bourlakis, Michael
【影响因子】5.992
【主题类别】
区块链应用-实体经济-食品领域
【Abstract】Blockchain technology has been identified as a possible solution to address critical challenges faced by the food sector. Building on the potential of Blockchain within Food Supply Chains (FSC), this study aims to develop an evidence-based implementation model for Blockchain in the food industry. Innovation Adoption and other prominent theories are integrated to first develop a conceptual framework, which is later validated following an analysis of the qualitative data. Fifteen semi-structured expert interviews are used to develop an evidence-driven, applied model for implementing Blockchain; providing detailed insights into typical stages, associated activities, and contextual determinants needed for successful integration. An empirically validated implementation model advances the extant academic literature and further provides a detailed roadmap for food practitioners, while initiating Blockchain projects with their firms and/or supply chains.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; implementation framework; innovation adoption; food supply chain
【发表时间】
【收录时间】2022-09-12
【文献类型】 实证数据
【影响因子】5.836
【主题类别】
区块链应用-实体经济-智能家居
【Abstract】A smart home system composed of numerous smart devices has benefited people's life due to the feature of convenience. With the development of smart home technology, huge amounts of data stored on external servers flow between different smart devices, and the integrity of these data is of great importance to the security of smart home systems. In this paper, we propose a blockchain-based data integrity verification scheme that supports efficient dynamic operations for a smart home system. In the verification scheme, we utilize the home gateway (HG) to aggregate all the data information and design a data structure that can be efficiently and dynamically operated to store the tag information of the data, which can reduce the local storage pressure in smart home systems. Moreover, homomorphic verifiable tags are used to formulate verification strategies and record the interactions between HG, cloud service providers (CSP), and third-party auditor (TPA) on the blockchain to make the verification service traceable and useful. Then, the theoretical analysis and experiments prove that the scheme is effective and cost-acceptable in smart home systems.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Data integrity; Blockchain; Smart home system; Dynamic operation; Sampling
【发表时间】2022
【收录时间】2022-09-12
【文献类型】 理论模型
【Author】 Bakos, Yannis Halaburda, Hanna
FT50 UTD24
【影响因子】5.490
【主题类别】
区块链治理-市场治理-数字货币
【Abstract】We study the use of platform-specific tradable cryptographic tokens to solve the coordination problem that is common in adopting new marketplaces. We show that certain characteristics of platform-specific tokens-specifically, their tradability, the ability of the platform to commit both to accept and to require these tokens in the future, and the ability to commit to a price and/or quantity schedule-can help overcome the coordination problem and can support equilibria favorable to the new marketplace. Compared with other mechanisms in the literature to address the coordination problem-such as subsidies of early users and promises of refunds or buybacks if the platform fails-platform-specific cryptographic tokens are less likely to favor established or larger firms with established reputations and financial resources. We find that tokens allow a marketplace to trade off future revenue for present revenue, which then can be used to address the coordination problem. On the other hand, the ability to trade out of the platform results in a smaller future network and lower total profit. Thus, if the new marketplace is not facing capital constraints, then the most profitable strategy is the traditional strategy to subsidize adoption. If the new marketplace is capital-constrained, however, as is often the case for new entrants and unproven technology applications, tokens can offer an alternative that is increasingly attractive as the cost of capital increases.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】adoption of new marketplaces; economics of IS; ICOs; blockchain; platform adoption; network effects
【发表时间】
【收录时间】2022-09-12
【文献类型】 实证数据
【DOI】 10.1287/isre.2022.1157
【影响因子】3.715
【主题类别】
区块链应用-实体经济-供应链
【Abstract】Purpose The analytical hierarchical process (AHP)'s main purpose is to assess higher hierarchy levels based on the cooperation of its various levels. It results in a well-designed model-based method in which the weights for the selected attribute are calculated using dimensions, criteria, and indicators. This paper aims to highlight the benefits of blockchain in supply chain management with the help of a literature review along with opinions of experts from various sectors. Design/methodology/approach With the goal of enhancing the use of blockchain technology in supply chain management, particularly when comparing within the same industry, the AHP methodology has been used. In order to develop the AHP model, a total of eight elements are examined in this study, which are decentralization, resiliency, security, smart contracts, sustainability, traceability, transparency and trust. A calculation of a Desirability Index for conventional supply chain and blockchain-enabled supply chains has been also developed. Findings Findings where that in a blockchain-enabled supply chain, the global weights of individual benefit variables are considerably larger than in conventional supply chains. When the score of the Desirability Index for conventional supply chain and blockchain-enabled supply chain is compared, the blockchain-enabled supply chain significantly surpasses the conventional supply chain in terms of increasing sustainable development in today's supply networks. Originality/value This study takes into account the AHP methodology applying it on blockchain. This has not been done before in the academic world, at least as far as the authors may be aware of. The originality of combining such process with a recent technology such as blockchain highlights the value of this research.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; Supply chain management; Analytical hierarchical process
【发表时间】
【收录时间】2022-09-12
【文献类型】 理论模型
【影响因子】3.525
【主题类别】
区块链应用-实体经济-交通领域
区块链技术-协同技术-物联网
【Abstract】Maritime transportation has ushered in a period of vigorous development and has been the most critical mode of transport in international trade. Maritime communication is also becoming increasingly complex. This trend needs the IoT-enabled Maritime Transportation System (IMTS) to enhance its ability of privacy-preserving, performance continuously, and add the function of joint management. Although many aggregate signcryption (ASC) schemes have been presented to satisfy this requirement, they still suffer from performance deficiencies or security weaknesses. To address these issues, we design a more practical "Perception-Network-Application" IoT-enabled MTS (PNA-IMTS) network structure. Then, we propose an efficient Identity-based aggregate signcryption scheme with blockchain (B-ID-ASC) for PNA-IMTS based on this network model. The security analysis shows that the B-ID-ASC scheme is capable of providing confidentiality and unforgeability. It also can resist existing known attacks (impersonation attack, modification attack, man-in-the-middle attack). The performance analysis indicates that our B-ID-ASC scheme, having lower computation and communication costs than current ASC schemes, is more applicable for PNA-IMTS.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Organizations; Blockchains; Relays; Aggregates; Transportation; Receivers; Wireless sensor networks; IMTS; PNA-IMTS; blockchain; B-ID-ASC; confidentiality; unforgeability
【发表时间】2022
【收录时间】2022-09-12
【文献类型】 理论模型
【影响因子】3.525
【主题类别】
区块链技术-核心技术-扩展方案
【Abstract】Connected and Autonomous Vehicles (CAV) is a system of inter-connectivity and communication between smart automated vehicles. Blockchain has emerged as a technology focusing on data security with a decentralized architecture and has been successful to a very high degree. Unfortunately, this technology was not originally meant for low-power IoT devices and is very computationally expensive with high power requirements and a tendency to introduce delays. With the explosion of the Internet of Things (IoT) enabled autonomous vehicles, boosted further by the advent of smart cities, energy requirements have become an issue that can no longer be ignored. As a consequence, research into green technologies has been gaining popularity. With this area of focus, blockchain with its exponential power consumption levels is heavily flawed and thus presents itself as a prime candidate for improvement. In this paper, a framework is proposed to further evolve blockchain technology to integrate it with a semi-centralized data storage mechanism, while keeping network control decentralized. The proposed Blockchain Tree (BCT) approach entails a combination of a tree structure network composed of blockchains, based on a time-based upward data propagation mechanism that optimizes the architecture to reduce communication delay, cut down its high power consumption levels and ensure sustainability in the long run. As is evident in the comparative study, such a blockchain-based network structure offers drastic improvements in terms of speed, energy savings, storage and computation. The proposed model reduces the storage requirement of the blockchain by a factor of 0.17. The energy requirements and time complexity have been optimized by approximately 195% in the early stages of optimization. All the parameters get further optimized by orders of magnitude with more transactions and users.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchains; Internet of Things; Energy storage; Power demand; Energy consumption; Decision making; Autonomous vehicles; Blockchain tree; connected autonomous vehicles; green technology; Internet of Things; smart city; sustainability; energy consumption; storage complexity; time complexity
【发表时间】2022
【收录时间】2022-09-12
【文献类型】 理论模型
【影响因子】3.525
【主题类别】
区块链技术-协同技术-物联网
【Abstract】We describe an implementation of a data storage and manipulation system for the Internet of Things (IoT) networks based on blockchain and using a Practical Byzantine Fault Tolerance (PBFT)-like protocol to achieve consensus. In our proposed model, blockchain ledger consistency is ensured by leaders contending for the next available spot(s) in which the newly accepted blocks will be appended to the blockchain. The contention takes place on a shared overlay accessible to all leaders nodes. We use a multiple-entry PBFT to eliminate the need for a dedicated leader node and the delays involved in changing leaders in different rounds. Our model allowed the multiple leaders to work in parallel to propose blocks using dedicated overlay networks. The performance of the proposed scheme is analyzed through an analytical model that employs a discrete-time Markov chain and M/G/1 queuing model with exhaustive limited service. The results obtained from the model confirm the efficiency of the proposed model in a wide range of parameter values and show that the proposed model outperforms the multiple entry points of the PBFT protocol with single block insertion.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchains; Peer-to-peer computing; Internet of Things; Smart cities; Green products; Delays; Scalability; Blockchain; Internet-of-Things; practical Byzantine fault tolerance (PBFT)
【发表时间】2022
【收录时间】2022-09-12
【文献类型】 理论模型
【Author】 Ahmed, Rania A. Hemdan, Ezz El-Din El-Shafai, Walid Ahmed, Zeinab A. El-Rabaie, El-Sayed M. Abd El-Samie, Fathi E.
【影响因子】3.310
【主题类别】
区块链应用-实体经济-农牧领域
【Abstract】The Internet of Things (IoT) is an important technology that provides efficient and dependable solutions in a variety of domains, such as smart agriculture and climatic change. It integrates billions of smart devices that can communicate with one another and gives solutions to automatically maintain and monitor smart agricultural and environmental fields. The combination of IoT, Artificial Intelligence (AI), and blockchain technology will allow us to transform smart agriculture into the Internet of smart agriculture, providing greater control, management, and security in supply-chain networks. This paper presents an overview of the technologies in the domains of IoT, Climate-Smart Agriculture (CSA), AI, Machine Learning (ML), and blockchain. In addition, the paper presents several approaches for integrating IoT with CSA data analysis. Both AI and blockchain are adopted for efficient CSA systems. The paper is concerned with the combination of three recent technologies: IoT, ML, and blockchain to serve the CSA applications. The challenges and opportunities of combining these technologies to serve CSA are also discussed in the paper.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】
【发表时间】
【收录时间】2022-09-12
【文献类型】 观点阐述
【DOI】 10.1002/ett.4607
【Author】 Javed, Laraib Anjum, Adeel Yakubu, Bello Musa Iqbal, Majid Moqurrab, Syed Atif Srivastava, Gautam
CCF-C
【影响因子】2.812
【主题类别】
区块链应用-实体经济-医疗领域
【Abstract】Every individual in our technologically evolved world needs proper data security. The procedure of exchanging medical information is increasingly concerned with data privacy. Many techniques have been offered for preserving data security. These techniques use approaches such as k$$ k $$-anonymity, l$$ l $$-diversity, and others. However, such solutions are vulnerable to attribute disclosure, homogeneity, and background knowledge risks due to their syntactic nature. In this work, we describe a safe and secure architecture and semantic approach for data sharing that is based on blockchain, local differential privacy (LDP), and federated learning (FL). The proposed framework generates an atmosphere devoid of trust in which data owners are no longer required to have trust in the controllers. The FL models enable the whole network to decentralize its data-driven learning. Interplanetary file system (IPFS) is used to provide data security in a distributed environment because each file in IPFS has a digital fingerprint that is computed using a cryptographic hash function on the file's whole contents. Due to the rigorous privacy guarantee, data owners no longer need to be worried about the security of their data. The proposed model's assessment parameters include latency, throughput, privacy, and accuracy. The data privacy of the proposed model is protected via LDP and FL, and its latency and throughput communication transactions on permissioned blockchain are calculated and compared with those of the benchmark model. The findings indicate that the proposed model delivers 85% more accurate privacy than the benchmark model.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】blockchain; federated learning; local differential privacy; privacy protection
【发表时间】
【收录时间】2022-09-12
【文献类型】 理论模型
【DOI】 10.1111/exsy.13131
【Author】 Xiao, Ling Zou, Beiji Zhu, Chengzhang Nie, Fanbo
【影响因子】2.557
【主题类别】
区块链应用-实体经济-医疗领域
【Abstract】With the explosive growth of medical data, the tendency to store medical data on cloud is extremely widespread. However, large-scale medical data have put great pressure on cloud storage systems since redundancy of data wastes much storage space and increases economic expense. Besides, security is also highly important for medical data stored in the cloud. In order to reduce redundancy and ensure security of medical data simultaneously, this study proposes an efficient and secure deduplication scheme ESDedup. Compared with existing works, the redundancy of medical data is summarized and denoising of deduplication is firstly presented to decrease the storage overhead. Afterward, the rewriting algorithm based on similarity instead of the time attribute eliminates more fragments. Meanwhile, the auditing strategy of blockchain is designed to promote the auditing efficiency and security. Experiments demonstrate that ESDedup not only promotes the scalability and system performance, but also improves the deduplication ratio by 55.9% compared with the state-of-the-art method.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Redundancy; Deduplication; Data similarity; Blockchain; Storage systems
【发表时间】
【收录时间】2022-09-12
【文献类型】 理论模型
【影响因子】2.557
【主题类别】
区块链应用-实体经济-医疗领域
【Abstract】Blockchain technology has been changing the nature of several businesses, from supply chain management to electronic record management systems and copyright management to healthcare applications. It provides a resilient and secure platform for modifications due to its distributed and shared nature and cryptographic functions. Each new technology, however, comes with its challenges alongside its opportunities. Previously, we performed a systematic literature review (SLR) to explore how blockchain technology potentially benefits health domain applications. The previous SLR included 27 formal literature papers from 2016 to 2020. Noticing that blockchain technology is rapidly growing, we extended the previous SLR with a multivocal literature review (MLR) approach to present the state of the art in this study. We focused on understanding to what degree blockchain could answer the challenges inherited in the health domain and whether blockchain technology may bring new challenges to health applications. The MLR consists of 78 sources of formal literature and 23 sources of gray literature from 2016 to 2021. As a result of this study, we specified 17 health domain challenges that can be categorized into four groups: (i) meeting regulatory requirements and public health surveillance, (ii) ensuring security and privacy, (iii) ensuring interoperability, and (iv) preventing waste of resources. The analysis shows that blockchain makes significant contributions to the solutions of these challenges. However, 10 new pitfalls come with adopting the technology in the health domain: the inability to delete sensitive data once it is added to a chain, limited ability to keep large-scale data in a blockchain, and performance issues. The data we extracted during the MLR is available in a publicly accessible online repository.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; Health domain challenges; Software development; Multivocal literature review; Formal literature; Gray literature
【发表时间】
【收录时间】2022-09-12
【文献类型】 综述
【Author】 Zhang, Shiqiang Cao, Dongzhi Ning, Zhenhu
【影响因子】1.831
【主题类别】
区块链技术-协同技术-物联网
区块链技术-协同技术-云计算
【Abstract】The combination of edge computing (EC) and the Internet of Things is a hot research topic. And security is one of the most important problems to be solved. The trust measurement of devices is an effective way to solve the security problem, and the lack of a unified trust measurement model makes the untrusted devices destroy the quality of service. Establishing a reliable trust relationship between devices can effectively improve the security of the system. A decentralized trust measurement model for devices is proposed. First, a decentralized trust measurement framework is proposed, which combines EC with blockchain technology to establish a decentralized hierarchical structure; second, the credibility of devices is measured from multilevel and multi-attribute; finally, a feedback trust filtering mechanism is designed to filter reliable feedback information, and then the trust between devices and the comprehensive trust of devices are calculated. Experiments and analysis show that the proposed decentralized trust measurement model can effectively measure the trust degree of devices and resist various malicious feedback attacks.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】blockchain; edge computing; Internet of Things; trust measurement
【发表时间】
【收录时间】2022-09-12
【文献类型】 理论模型
【DOI】 10.1002/cpe.7238
【Author】 Mcdonald, Oonagh
【影响因子】1.431
【主题类别】
区块链治理-法律治理-数字货币监管
【Abstract】
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】
【发表时间】
【收录时间】2022-09-12
【文献类型】 观点阐述
【DOI】 10.1111/jols.12383
【Author】 Hang, Lei Chen, Chun Zhang, Linchao Yang, Jun
CCF-C
【影响因子】1.345
【主题类别】
区块链应用-实体经济-医疗领域
【Abstract】Patient enrollment, data sharing, and data privacy are enormous medical challenges for clinical trial studies. In recent years, blockchain technology has drawn the attention of various researchers and institutes. As a new and innovative distributed ledger technology, blockchain can be critical to addressing these challenges, thus making clinical research transparent and building public trust fairly and openly. However, the existing literature lacks a comprehensive survey on the adoption of blockchain in clinical trials. To fill the research void, this paper presents a punctilious taxonomy of blockchain technology in clinical trials according to the literature. This taxonomy comprises decentralized scenarios, decentralized practices, blockchain types, deployment methods, and consensus algorithms. The results show that blockchain technology can cover all aspects of the clinical trial study in a decentralized, secure, transparent manner. Besides, some open research challenges of blockchain are categorized into three groups: technical challenges, security challenges, and organizational challenges. Moreover, some recent blockchain projects, micro applications in clinical trials, and several research areas or technologies for future research and development are discussed.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】
【发表时间】
【收录时间】2022-09-12
【文献类型】 综述
【DOI】 10.1049/cmu2.12488
【影响因子】0.000
【主题类别】
区块链技术-核心技术-共识机制
【Abstract】This paper proposes a model-driven approach for the security modelling and analysis of blockchain based protocols. The modelling is built upon the definition of a UML profile, which is able to capture transaction-oriented information. The analysis is based on existing formal analysis tools. In particular, the paper considers the Tweetchain protocol, a recent proposal that leverages online social networks, i.e., Twitter, for extending blockchain to domains with small-value transactions, such as IoT. A specialized textual notation is added to the UML profile to capture features of this protocol. Furthermore, a model transformation is defined to generate a Tamarin model, from the UML models, via an intermediate well-known notation, i.e., the Alice &Bob notation. Finally, Tamarin Prover is used to verify the model of the protocol against some security properties. This work extends a previous one, where the Tamarin formal models were generated by hand. A comparison on the analysis results, both under the functional and non-functional aspects, is reported here too.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Distributed ledger technology; Formal modelling; Automatic model generation; Vulnerability discovery; Formal verification; UML profile
【发表时间】
【收录时间】2022-09-12
【文献类型】 实验仿真
【影响因子】0.000
【主题类别】
区块链技术-协同技术-隐私计算
【Abstract】With the proposal of the concept of ubiquitous power Internet of Things and the further promotion of blockchain strategy, modern information technologies such as the Internet of Things and cloud computing have been widely used in the power system. While the power grid is becoming more intelligent, it is also accompanied by the emergence of various security threats, and the power grid will face greater challenges and pressures. In this paper, aiming at the current situation of information security faced by the power grid blockchain under the cloud Internet of Things, a multi-authorization center ciphertext policy attribute encryption access control method is constructed for the power grid blockchain. It adds the function of visitor attribute update revocation, aggregates multi-dimensional data into ciphertext, and uses CP-ABE encryption to implement fine-grained access control at the dimension level. Through experimental analysis, in terms of security and functionality, this method can resist physical collision attacks and manage access rights flexibly. In terms of encryption and decryption efficiency, the encryption and decryption calculation speed of the proposed method is 6.2-15.6% higher than that of the traditional method, and the time consumption efficiency is more than 5% higher than that of other methods. It proves that this model has more advantages for open network environments such as power grid blockchain with high confidentiality requirements and large scale of users. It is of great significance to study the data security and privacy protection methods of the power grid blockchain.
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【Keywords】blockchain; encryption algorithm; Internet of Things; power system; private data; security model
【发表时间】
【收录时间】2022-09-12
【文献类型】 理论模型
【DOI】 10.1515/ijeeps-2022-0094
【作者】 崔梦天;董国庆;姜玥;贺春林;M.S.Mariani;
【作者单位】西南民族大学国家民族委员会计算机系统重点实验室;西华师范大学计算机学院;苏黎世大学信息系;弗里堡大学数据与网络中心;
【文献来源】情报杂志
【复合影响因子】3.030
【综合影响因子】2.087
【主题类别】
区块链技术-核心技术-智能合约
【摘要】[研究目的]现阶段公安情报仍然存在信息不对称、共享动力不足等问题,为此,提出基于联盟链的公安情报数据共享和激励方法,实现安全存储、高效共享的公安情报信息化平台。[研究方法]根据公安情报部门的组织架构,利用联盟链的节点授权性、自信任性等技术特性与公安情报工作建立起关系匹配模型,并且重新设计了数据区块存储结构;为了达到高效公平的共享,采用归一化处理方法,提出了一种基于情报贡献度和智能合约的公安情报共享激励机制,通过实验验证了该方案的可行性。[研究结论]提出的方法将在公安情报共享过程中的积极性和存储安全性方面提供新的问题解决思路,极大提升公安情报工作的效率和公安机关的治安防控打击犯罪的能力。
【关键词】公安情报;;情报共享;;联盟链;;智能合约;;激励机制
【文献类型】 理论模型
【发表时间】2022-09-12
【作者】 宋芳斌;甘锋;
【作者单位】南京理工大学设计艺术与传媒学院;东南大学艺术学院;
【文献来源】南京社会科学
【复合影响因子】
【综合影响因子】
【主题类别】
区块链应用-虚拟经济-NFT
【摘要】基于区块链技术而生成的NFT艺术品，为数字艺术品市场多元发展提供可能，但也存有多种潜在法律风险。NFT艺术品是具备资产属性的数字收藏品，其既存有艺术性，又体现出不可篡改性、不可复制性、所有权归属明确性等技术特性。特别是，艺术受众审美差异性、艺术品交易多元化所关涉的艺术品法律风险等，如平台交易漏洞、交易混乱等技术缺陷，亦或存有的知识产权保护、法律监管等法理问题。因此，有必要推进NFT艺术品“技术—法律”二元保护模式，以智能合约堵截技术漏洞，在法秩序统一视野下及时立法，制定监管措施，推动平台合规有序发展。
【关键词】区块链;;NFT艺术品;;法律保护
【文献类型】 观点阐述
【发表时间】2022-09-12