With the rapid development of communication technologies, the demand for security and automation of driving has promoted the development of the Internet of Vehicles (IoV). The IoV aims to provide users with a safer, more comfortable, and more efficient driving experience. However, the current IoV also faces a series of potential security risks and privacy breaches, which has further propelled research on trust management for vehicular networks. The introduction of the blockchain has resolved the issue of data security in IoV trust management. However, the blockchain is limited by its own performance and scalability, making it unsuitable for large-scale networks. In order to enhance the transaction-processing efficiency of blockchain-based trust management solutions and address their scalability limitations, this paper presents a graph partition-based blockchain-sharding protocol. Simulation results on real-world datasets demonstrate that the proposed scheme exhibits better scalability compared to existing blockchain-based approaches and can accommodate larger-scale device access.
The proliferation of smart contracts has led to a surge in hacking attacks, resulting in substantial financial losses and undermining the healthy growth of the blockchain ecosystem. To mitigate these challenges, this paper introduces a dynamic vulnerability detection approach for smart contracts leveraging machine learning techniques. The proposed method involves the extraction of opcode sequence features through a combination of the N-gram model and a weight penalty mechanism. The core objective is to identify vulnerabilities within deployed smart contracts by analyzing the opcode sequences during their dynamic execution. This approach falls under the category of dynamic detection, aiming to ensure the integrity and security of blockchain-based systems.
The current blockchain system for cryptocurrency exchanges primarily employs elliptic curve cryptography (ECC) for generating key pairs in wallets, and elliptic curve digital signature algorithms (ECDSA) for generating signatures in transactions. Consequently, with the maturation of quantum computing technology, the current blockchain system faces the risk of quantum computing attacks. Quantum computers may potentially counterfeit signatures produced by ECDSA. Therefore, this study analyzes the vulnerabilities of the current blockchain system to quantum computing attacks and proposes a post-quantum cryptography (PQC)-based blockchain system to enhance security by addressing and improving each identified weakness. Furthermore, this study proposes PQC-based wallets and PQC-based transactions, utilizing PQC digital signature algorithms to generate PQC-based signatures for the inputs in PQC-based transactions, thereby preventing signatures from being counterfeited by quantum computing. Experimental results demonstrate that the efficiency of the Module-Lattice-Based Digital Signature Algorithm (ML-DSA), a PQC digital signature algorithm, in producing wallets, generating signatures, and verifying signatures surpasses that of ECDSA in the current blockchain system. Furthermore, the ML-DSA also exhibits a higher security level.
Mohammad AlShaikh Saleh, Sunil P. Khatri, Ali Ghrayeb, Shady S. Refaat
Investigations in industrial and computational research emphasize the progress of blockchain-enabled smart contracts due to their resilient features, which include decen-tralised transaction storage, autonomous contract regulation enforcement, and distributed trust creation. Blockchain-powered smart contracts can transform operational frameworks in various sectors aiming for superior service delivery. The advantages this technology brings involve a multitude of applications that span industries as cryptocurrencies, logistics systems, agricultural practices, real estate operations, and energy trading among others. Notably though one crucial emerging application is within smart grids (SG). The decentralization aspect of blockchain is one of the most significant leaps in computing for smart grids. The application of blockchain aligns with the vision of having a decentralized electric grid by distributing renewable energy sources. Therefore, numerous efforts are being conducted to examine the prospects for the relevance of smart contracts and blockchain to the smart grid system. To this end, this paper aims to review the essential elements of blockchain-based smart contracts to emphasize their current capabilities for enhancing the transition to a decentralized smart grid with proposals on future research directions.
Blockchain is a distributed ledger technology that became widely known with the development of virtual currencies, and is often applied in fields such as finance, logistics, and government that require high data security. Engineering project archives belong to commercial confidential documents, and there are strict regulations for the establishment and circulation of archives. Engineering project archives are technical documents formed during engineering planning, construction, and management activities, and their authenticity and immutability are crucial. In order to address the security and credibility issues in traditional project archive management, this paper proposes a digital management solution for project archives based on blockchain and smart contract technology, which reduces the possibility of human operation in archives and aims to make the archive management process more reliable and intelligent.
In the process of technology promoting the transformation towards digitalization, both blockchain technology and supply chain finance emerge as hot topics. Blockchain technology, characterized by decentralization, immutability, transparency, security, and programmability, addresses the risk consider
Blockchain technology, as an emerging distributed ledger technology, has attracted wide attention in various industries. From the perspective of information economics, this paper discusses the application scenarios and economic logic of blockchain technology in economic activities. The basic principles and characteristics of blockchain technology are outlined, emphasizing its advantages such as tamper-proof data records, decentralized trust mechanism and smart contracts. The application scenarios of blockchain technology are analyzed in the fields of supply chain management, financial services, logistics management and so on, combined with the theories of information asymmetry and incomplete information economics, and the economic logic behind the application of blockchain technology is expounded. Finally, this paper summarizes the positive role of blockchain technology in improving market efficiency, reducing transaction costs and improving information symmetry, and prospects the development trend of blockchain technology in the future. This paper aims to provide researchers and practitioners with an economic analysis framework and ideas on the application of blockchain technology, and to promote the in-depth discussion and development of this field.
Shi Ding, Zhonghui Li, Arnaud Régis Kamgue Lenwoue, Yubo Li · 8 authors
Blockchain, as a distributed ledger technology is a decentralised, transparent and traceable technology. It has rapidly developed during the last decade and is widely used in many industries such as the oil and gas engineering. This study first describes the development, classification, characteristics and key technologies of the blockchain technology. Then, the application of blockchain and the challenges currently encountered during its implementation in the oil and gas industry are summarised. Finally, some feasible solutions are presented to overcome these challenges. The current work provides a deep insight of the main research progress of the application of blockchain technology in the oil and gas industry and is expected to enable the further development of this sector. [Received: May 18, 2023; Accepted: December 12, 2023]
Smart contracts play a crucial role in blockchain technology, but their writing poses risks of vulnerabilities, potentially leading to serious consequences such as financial losses and system crashes. To address this, we propose a smart contract vulnerability detection method based on VCS and ensemb
This research paper discusses virtual currency and the blockchain technology that underpins it. Virtual money, frequently referred to cryptocurrency, is a digital method of payment that is not regulated by traditional financial institutions. It enables individuals to perform peer-to-peer transactions in a secure and efficient manner by using encrypted digital records. Cryptocurrencies like Bitcoin and Ethereum have garnered popularity due to their promise to transform financial institutions by enabling international and decentralized payments. Blockchain technology facilitates the operation of virtual currency. A blockchain is an immutable and decentralized digital ledger which keeps track of every single transaction in an easily accessible and tamper-resistant manner. Each transaction is organized into a block and linked to the one before it, forming a chain of blocks. This paper explores virtual currency and its foundation, blockchain technology. Cryptocurrency, a digital payment method, enables secure peer-to-peer transactions without traditional financial oversight. Prominent examples like Bitcoin and Ethereum offer potential for global and decentralized payments. Blockchain, an immutable digital ledger, supports virtual currency, recording tamper-resistant transactions in linked blocks.
This study aims to explore supply chain finance risk management leveraging blockchain technology. Supply chain finance, integral to business progression, contends with several risks, such as credit risk, liquidity risk, and information asymmetry. Blockchain technology, celebrated for its decentralization, security, and transparency, emerges as a solution for these challenges. After a thorough literature review on supply chain finance and blockchain technology, we delve into the practical implications of blockchain in this domain. Our newly proposed blockchain-based supply chain finance risk management model gets underscored, discussing its pivotal elements like smart contracts, distributed ledger, and data encryption. In testing our model, we observed a 35% reduction in credit risk incidents, a 50% increase in supply chain transparency, and a 20% cut in transaction costs. These tangible results validate the profound advantages of integrating blockchain in supply chain finance risk management.
With the rapid changes in technologies such as artificial intelligence, the management methods and management modes of universities need to keep pace with the changes of the times.It is a necessary prerequisite to improve management efficiency and reduce management costs for managers to grasp all effective information in a timely and accurate manner."This paper aims to find new support points to make the financial management of universities gradually move from decentralization to centralization, liberate financial personnel from simple accounting work and participate in management, realize the transformation of financial management, and provide strong guarantee for the reform and development of universities. The Purpose of Integration of the Operations and Finance Departments in Colleges and UniversitiesIntegration of the 0perations and finance departments is to organically combine the Operations and finance of colleges and universities, and financial personnel will take the initiative to participate in operation activities, and understand operations work while knowing finance work, so that financial personnel will become "all-round comprehensive"[1-3].Let the financial personnel who understand operations actively and effectively participate in the whole process of operations activities, which can not only enhance the accuracy of operations decisions, but also improve the quality and efficiency of operations activities, analyze the effective and dynamic operations and financial data at all times, provide decision-making guidelines for the cutting-edge Operations activities and form effective prior guidance.The "integration of operations and finance departments" is a new requirement for financial work [4][5][6], a new direction for the transformation and development of financial work, and a requirement and expectation of universities for financial management [7][8].
In the Internet age, user information is easily leaked and destroyed, and users are increasingly concerned about the privacy and security of information. If the smart contract itself has hidden security risks, it may threaten the user’s personal information and property security, and cause unpredictable losses. This article focuses on the security problems of smart contracts, based on the rules of association mining, and adopts a reverse approach to the intelligence in Ethereum Analyze the contract source code, extract the logical flow of the contract, and further analyze whether the contract has obvious security risks. Finally, from the privacy, mechanism design and security, performance and formal verification of the smart contract itself, and the existence of the three major platform applications Analyze and forecast the future research direction of blockchain smart contracts.
With the increasing concern of consumers about food quality and safety, the transparency and traceability of agricultural food supply chains have become crucial. This study focuses on the milk supply chain and explores how blockchain technology can be utilized to improve risk management. Leveraging the characteristics of distributed ledger, smart contracts, and immutability offered by blockchain, the transparency of the milk supply chain can be enhanced, reducing information asymmetry and effectively lowering potential quality and safety risks. The research will emphasize the application of blockchain in various stages of milk production, transportation, storage, and sales, as well as its role in traceability, verification, and trace-back. Through in-depth analysis, this study aims to provide a more secure, efficient, and reliable solution for milk supply chain management, contributing new ideas and methods for the sustainable development of the food industry.
This paper mainly emphasizes the corresponding analysis of the application of blockchain deposit in criminal online litigation in Chinese mainland. Firstly, it elaborates the characteristics of blockchain technology, such as uncoded, distributed ledger that is decentralized, asymmetric encryption and authorization technology, data uploading immediacy, etc., and then it analyzes the judicial practice of blockchain deposit technology in online litigation. It mainly includes improving the rules for reviewing the authenticity of blockchain evidence, focusing on the existing system to support the operation of blockchain deposit technology, etc., to study whether blockchain deposits can be better applied in criminal online litigation.
Jan 1, 2023·Proceedings of the 2nd International Conference on Mathematical Statistics and Economic Analysis, MSEA 2023, May 26–28, 2023, Nanjing, China
In recent years, the business demand of international cold chain food trade has been increasing, but the process is complex, time-consuming, and there are data trust issues. This paper proposes a blockchain-based international cold chain trade platform system, which uses the immutable and traceable
In order to meet the demand for blockchain talents, this paper explores the practical teaching of blockchain technology.Taking Ethereum as the platform and combining the application of blockchain technology in the field of digital copyright protection, we guide students to conduct research projects, so that students have a deep understanding of some abstract concepts of blockchain and master the methods of blockchain development.
As technical service provider, non-fungible token (NFT) digital work trading platforms directly gain economic benefits from transactions, and thus the platform should assume higher prior censorship obligation, bounded by the obligations due to a good administrator.When NFT digital work trading platforms bear the liability for calling off infringement, in case of failing to delete the infringing works on the blockchains, and punching the address blackhole may damage the bona fide trading counterparty; the system of "infringement without bearing the liability for stopping infringement" can be introduced to balance the interests of all parties.
The emergence of new and improved technological advances created severe problems in the security state of the educational certification system. Throughout this paper, a proposal has been made to improve security. Here, Blockchain technology has been introduced as reliable secure storage for the educational certification system, providing an additional facility to the users. That is the validation and authentication of the student's academic records. Moreover, for security purposes, Blockchain technology can replace the traditional academic certification system and contribute to a new model for sharing student information. After completion of data inclusion and hashing, the blocks will be inserted into the Blockchain network. This proposed model enhances document security and fraud reduction and additionally reduces a significant amount of authentication time almost up to double the current speed. With this system, we will get a certification process in which all data will be digitalized and secured in an unbreakable database with proper authentication and with a noticeable amount of time efficiency.
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Exorbitant costs and extensive lead times are key concerns for transboundary payments. Transboundary deals face greater development challenges than domestic payment systems since they require a high degree of trust and include currency conversion. In this context, blockchain can successfully establish new cross-border payment services and promote cross-border commerce by employing a distributed public ledger that integrates public key encryption and peer-to-peer technology. Blockchain has got two key characteristics: distributed consensus and anonymity. By eliminating intermediaries between third-party finance agencies, it not only allows for instant payments around the clock but also contributes to mitigating the exposure to transboundary capital flows and meeting consumer needs for expedient transboundary payments and clearing services. This paper argues that while blockchain technology eliminates problems and presents effective strategies for conventional transboundary payments, it also raises many legislative and regulative issues for China. As the law itself is not yet mature, especially given the changes in international payments in the wake of the epidemic, it is worthwhile to explore the operating rationale and regulation obstacles of blockchain to the maximization of profits and minimization of risks in transborder payments by leveraging its inimitable strengths.
Blockchain provides IoT security and privacy in all industries including manufacturing, finance, healthcare, supply chain, e-governance, education, banking, and trading through decentralization, persistency, anonymity, and auditability characteristics. This paper presents the blockchain technology assimilating with other data security technologies to design a blockchain based data sharing system. Based on the design the network architecture of data sharing system, we test and analyze various processes in data sharing. To test the function and security of the system, we have built a test environment with data sharing system consisting of three blockchain nodes, four data participant nodes (three data users, one data provider), and a data-sharing system composed of CA. We developed Base App as an application provided by the data user, including addition, deletion, check modification of data in the application code for data sharing. We simulated an experiment related scenario, and then we wrote a program to generate the vehicle information data and import it into MySQL for storage. The paper has found some valuable results of functional test, system test, safety test, and performance test of the data sharing system. This system realizes the possibility of a system that can connect multiple participants and their corresponding data.