Follow blockchain research across journals, conferences, and preprint repositories.
8,837 results · page 286 of 369
Shahab Ali, Nadeem Javaid, Danish Javeed, Ijaz Ahmad · 6 authors
No abstract is available for this record.
Nicanor Chavez, Stefan Kendzierskyj, Hamid Jahankhani, Amin Hosseinian
No abstract is available for this record.
Sadia Showkat, Shaima Qureshi
At present, the networks are vulnerable to various security problems like intrusion, phishing, hacking, to mention a few, and various encryption techniques are employed to curb the same. IoT environments are susceptible to various attacks that compromise the basic Confidentiality-Integrity-Availability triad of network security. IoT applications range from baby monitors to high-end military systems. With a plethora of devices transmitting sensitive information, the security of IoT environments becomes pivotal. However, it is not viable to extend the traditional dense encryption methodology to resource-inhibited IoT devices. Thus, lightweight algorithms are devised to meet the needs of their constrained architecture. Blockchain is a technology that helps in achieving a peer-peer secure and tamper-proof transfer of data between two objects. Blockchains can thus empower integrity in networks. Extending the concept of Blockchains to constrained IoT ecosystems, however, meets with its challenges. This paper focuses on the applications and challenges of Blockchain technology in securing IoT environments.
Andino Maseleno, Wahidah Hashim, Eswaran Perumal, M. Ilayaraja · 5 authors
No abstract is available for this record.
Saurabh Sharma, Ashish Mishra, Ajay Lala, Deeksha Singhai
No abstract is available for this record.
Priyanka Kumar, Maharshi Shah
No abstract is available for this record.
Hosny. H. Abo Emira
The Internet of Things (IoT) is increasingly an authenticity today. Nevertheless, some key challenges still need to be given care so that IoT solutions further support the rising demand for connected devices and the facilities offered. Outstanding to the possible significance and sensitivity of facilities, IoT solutions should address the security and privacy worries nearby these devices and the data they assemble, generate, and process. Recently, Blockchain technology has increased much attention in IoT solutions. Its principal usage conditions are in the financial domain, where Blockchain creates a capable application world and can be leveraged to explain security and privacy issues. However, this developing technology has a great possibility in the most various technological areas and can significantly help achieve the Internet of Things view in different features, increasing the measurements of decentralization, facilitating communications, allowing new transaction models, and allowing independent coordination of the devices. The paper's goal is to provide the ideas about the structure and operation of Blockchain and, typically, analyze how the use of this technology can be used to deliver security and privacy in IoT.
Xingzhi Wang, Yuchen Wang, Ang Liu
For the automotive industry, promoting more value-adding services in usage stage is a long-standing challenge for global manufacturers. As many cars have an unknown history, it is proven difficult, if not impossible, to prevent scams and frauds when offering car services. As an emerging technology, blockchain is characterized by high immutability, transparency, security, and traceability. Such characteristics make blockchain a highly promising empowering technology to maintain mutual trust among stakeholders in vehicle product-service system (PSS). This paper presents a blockchain-based PSS framework, which is intended to address the trust issue vehicle PSS.
Furqan Jameel, Uzair Javaid, Biplab Sikdar, Imran Khan · 6 authors
No abstract is available for this record.
Rustam Pirmagomedov, Aleksandr Ometov, Dmitri Moltchanov, Xi Lu · 9 authors
Wireless traffic produced by modern mobile devices displays high temporal and spatial dynamics as users spontaneously engage in collective applications where a significant portion of generated data remains localized. As a result, conventional service provisioning approaches may no longer be sufficient in beyond fifth generation (B5G) systems. The challenge of increased dynamics on the access networks can be mitigated with moving cells. However, the deployment time of these temporary serving entities may lag behind the service demand lifetime. Another viable solution to offload excessive cellular traffic is to rely upon locally available radio resources offered by user devices via direct mmWave-based mesh interworking. An important challenge in such systems is related to the incentivization of users to partake in collaborative resource sharing. To leverage multi-hop mesh capabilities, we propose the use of emerging blockchain technology that offers cryptographically-strong accounting while maintaining the anonymity of the participants. With system-level evaluations, we demonstrate that the utilization of mobile blockchain methods allows for a non-incremental improvement in the offloading gains. This demonstrates the potential of the outlined proposal for becoming a successful mechanism in the emerging B5G systems.
Maria José Sousa, Andréia de Bem Machado
This chapter aims to analyse the potentialities of blockchain in education. It is an exploratory study focused on blockchain technology applied to European Union education policy. To achieve this goal, a bibliometric analysis was done to identify studies already done on blockchain applied to education, and the main research items studied and how they can contribute to policy definition. The research question of this study is: What kind of contributions for policy emerge from the research that has been made on blockchain in education? The main findings are focused on getting a diploma, on the assessment, and the formative evaluation, but also related to the learning process in a distributive way to facilitate the educational management process.
Michael Adams, Suriadi Suriadi, Akhil Kumar, Arthur H. M. ter Hofstede
No abstract is available for this record.
Célio Márcio Soares Ferreira, Ricardo Oliveira, Jorge Sá Silva, Carlos Frederico Marcelo da Cunha Cavalcanti
No abstract is available for this record.
Vibha Nehra, Ajay K. Sharma, Rajiv K. Tripathi
No abstract is available for this record.
Manal Alkhammash, Natalia Beloff, Martin White
No abstract is available for this record.
B. Arunkumar, G. Kousalya
No abstract is available for this record.
Karthikeya Thanapal, Dhiraj Mehta, Karthik Mudaliar, Bushra Shaikh
Increasing list of records is with blockchain where each record is linked with the help of cryptography. Every block in the chain contains timestamp, transaction details and hash of a previous block, hash is cryptographic hash. This is a secured system, which we plan to replace the current online payment system. A current online payment gateway is prone to hackers where the attacker can tamper into the network, thus creating money loss. And not only this but also the transaction has to go through multiple payment systems which consumes time, also creating a risk of transaction getting failed. So, our system would be using blockchain that allows online transactions which would allow online payments to be sent directly from one party to another without going through a financial institution and in a secured way. This system allows online transactions between two parties based on cryptographic proof without relying and trusting for a third party. To record transactions, we use proof of work algorithm which makes computationally impractical for an attacker to change. Digital signatures provide part of the solution for ensuring the security and integrity of the data that is recorded onto a blockchain.
Hyowon Im, Ki‐Hyung Kim, Jai-Hoon Kim
Since personal health information is sensitive data, it should not be accessible to anyone. Only authorized users should be able to see it. Blockchain, new middleware platform paradigm, can provide confidentiality and data sovereignty as well as transparency and traceability. Personal Health Record (PHR) incorporating blockchain can be managed by the patient themselves, not by the centralized institution, through blockchain. In this paper, PHR based on Hyperledger Fabric (consortium blockchain) is proposed. We also analyze and compare performance in terms of transaction delay and ledger size for private data access.
Jing Wang, Yong Ding, Naixue Xiong, Wei‐Chang Yeh · 5 authors
Blockchain, a type of a decentralized network system that allows mutually distrustful parties to transact securely without involving third parties, has recently been attracting increasing attention. Hence, there must be a consensus mechanism to ensure a distributed consensus among all participants. Such a consensus mechanism may also be used to guarantee fairness, correctness and security of such decentralized systems. Thus, in this paper we propose a novel consensus mechanism named GSCS that is an improved version of PoW. Compared with existing consensus mechanisms (such as PoW, PoS and so on), GSCS provides strong resistance to resource centralization, the quantum attack and other malicious attacks. In this work, we first present the serial mining puzzle to resist collusive mining and the quantum attack. It guarantees that participants can only obtain a negligible advantage by solving the relevant problem in parallel. Second, GSCS considers the influence of participant credibility. The credibility is reflected by the mining behavior of each participant and directly influence to the mining difficulty of participant. Thus, credible participants enjoy a higher probability of winning the mining competition than do participants who are not credible. Finally, performance of GSCS is analyzed in terms of the common prefix, chain quality, chain growth, and power cost. The results indicate that GSCS is security- and incentive-compatible with suitable security parameter settings. In brief, GSCS has the potential to ensure a more secure and robust environment for decentralized blockchain systems.
Eman Shaikh, Nazeeruddin Mohammad
The exponential growth of urbanization has impacted the living and working conditions of people in various sectors such as, education, health, and transport. Nevertheless, it also has a negative impact on citizens’ life as they encounter issues like pollution, traffic congestion, environmental resource limitations. Thus, the idea of a smart city was developed to enhance the services provided by transportation, health, energy, and education sectors. However, to provide such services, the smart city uses IoT devices to collect the data and draw conclusions from the data to manage resources effectively. But such a centralized network produces various challenges such as security, privacy, trust, and cost. Blockchain technology, because of its salient features such as transparency and decentralization, can be used to address these challenges. This paper presents a technical review of using blockchain as a solution for Internet of Things (IoT) based smart cities. It also presents the current challenges faced by blockchain technology.
Naga Ramya Sravanthi Narikimilli, Anup Kumar, Antara Debnath Antu, Bin Xie
No abstract is available for this record.
Bacem Mbarek, Mouzhi Ge, Tomáš Pitner
No abstract is available for this record.
Jingning Zhang, Youshui Lu, Yuhao Liu, Yang Xu · 7 authors
No abstract is available for this record.
Sa’ed Abed, Ali Ashkanan, Wathiq Mansoor, Amjad Gawanmeh
No abstract is available for this record.