Security, Privacy, and Trust Management and Performance Optimization of Blockchain

2021 ◽  
pp. 134-146
Author(s):  
Priti Gupta ◽  
Abhishek Kumar ◽  
Achintya Singhal ◽  
Shantanu Saurabh ◽  
V. D. Ambeth Kumar
Keyword(s):  
Performance Optimization ◽  
Trust Management ◽  
Digital Data ◽  
Security And Privacy ◽  
Network System ◽  
Distributed Network ◽  
Central Authority ◽  
Open Environment ◽  
Blockchain Technology ◽  
And Performance

Blockchain provides innovative ideas for storing information, executing transactions, performing functions, creating trust in an open environment, etc. Even though cryptographers, mathematicians, and coders have been trying to bring the most trustable protocols to get authentication guarantee over various systems, blockchain technology is secure with no central authority in an open network system because of a large distributed network of independent users. If anyone tries to change the blockchain database, the current hash will also change, which does not match with the previous hash. In this way, blockchain creates privacy and trust in digital data by removing malleability attacks. In this chapter, security and privacy on the blockchain has been focused. The safety and privacy of blockchain are mainly engrossed on two things: firstly, uncovering few attacks suffered by blockchain systems and, secondly, putting specific and advanced proposals against such attacks.

scholarly journals STHM: A Secured and Trusted Healthcare Monitoring Architecture Using SDN and Blockchain

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1787
Author(s):  
Ezedin Barka ◽  
Sofiane Dahmane ◽  
Chaker Abdelaziz Kerrache ◽  
Mohamad Khayat ◽  
Farag Sallabi
Keyword(s):  
Monitoring System ◽  
Trust Management ◽  
Software Defined Networking ◽  
The Elderly ◽  
Optimal Level ◽  
Security And Privacy ◽  
Patient Privacy ◽  
Security Technologies ◽  
Blockchain Technology ◽  
Healthcare Monitoring

Healthcare professionals and scholars have emphasized the need for IoT-based remote health monitoring services to track the health of the elderly. Such systems produce a large amount of data, necessitating the security and privacy of that data. On the other hand, Software Defined Networking (SDN) integration could be seen as a good solution to guarantee both flexibility and efficiency of the network which is even more important in the case of healthcare monitoring. Furthermore, Blockchain has recently been proposed as a game-changing tool that can be integrated into the Internet of Things (IoT) to have the optimal level of security and privacy. However, incorporating Blockchain into IoT networks, which rely heavily on patients’ health sensors, is extremely difficult. In this paper, a secure Healthcare Monitoring System (HMS) is proposed with a focus on trust management issues. The architecture seeks to protect multiple healthcare monitoring system components and preserves patient privacy by developing a security interface where separate security modules can be integrated to run side by side to ensure reliable HMS. The security framework architecture we propose takes advantage of the blockchain technology as a secure and timely information back-end. STHM is a proposal that uses Software-Defined Networking (SDN) as the communication medium that allows users to access SDN’s different functional and security technologies and services. Simulation results show that the use of Blockchain for the SDN-based healthcare monitoring can ensure the desired flexibility and security for a very lightweight additional overhead.

scholarly journals DIGITALIZATION: THE USE OF BLOCKCHAIN IN PUBLIC SECTOR

2020 ◽  
Vol 5 (2) ◽  
pp. 72-82
Author(s):  
Nemer Aburumman ◽  
Jihad Fraij ◽  
Róbert Szilágyi
Keyword(s):  
Public Sector ◽  
Financial Management ◽  
Organizational Transformation ◽  
New Technology ◽  
Security And Privacy ◽  
Future Research ◽  
The Public ◽  
Blockchain Technology ◽  
And Performance ◽  
Trusted Data

In a world of nonstop developing technology, Blockchain has become a trusted tool to apply transparency in the public sector. The consensus mechanism provides trusted data that can support clear and adjusted as well as well-structured procedures. Nowadays, the public sector can increase trust by adapting Blockchain applications in the services offered to be e-government portals. In this paper, the researchers review the literature to identify the potential use cases and application of Blockchain in e-government services. This new technology along with its related applications will be discussed and defined. Moreover, the possibilities of using Blockchain in the public sector and its impact on organizational transformation, financial management, and performance are increasing. The study concluded that the use of blockchain technologies and applications is still limited in the public sector. Obstacles and barriers are related mostly to (security and privacy) and law and by-laws support. This paper will provide a useful reference for researchers in blockchain applications and their impact on e-government and propose future research questions that need to be addressed to inform how the public sector should approach the blockchain technology adoption.

scholarly journals Experimental Analysis of the Scalability of Ethereum Blockchain in a Private Network

2019 ◽  
Author(s):  
Iago S Ochôa ◽  
Rafael Piemontez ◽  
Lucas Martins ◽  
Valderi Reis Quietinho Leithardt ◽  
Cesar Albenes Zeferino
Keyword(s):  
Experimental Analysis ◽  
Security And Privacy ◽  
Blockchain Technology ◽  
And Performance ◽  
Private Network

Blockchain technology has aroused the interest of researchers as it ensures security and privacy in decentralized applications. One of the platforms currently used for the development of new blockchain-based solutions is the Ethereum network. This article presents an experimental analysis of the scalability of this network to identify its cost and performance for several contracts in a simulated private Ethereum network. The results obtained demonstrate that storage operations for large amounts of data can prevent the use of blockchain due to the high cost of gas charged for this type of operation. The experiments also pointed out that processing operations which do not store information have a small cost of gas.

scholarly journals Bi-Directional Mutual Energy Trade between Smart Grid and Energy Districts Using Renewable Energy Credits

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3088
Author(s):  
Sana Rehman ◽  
Bilal Khan ◽  
Jawad Arif ◽  
Zahid Ullah ◽  
Abdullah J. Aljuhani ◽  
...  
Keyword(s):  
Smart Grid ◽  
Graphical Analysis ◽  
Third Party ◽  
Security And Privacy ◽  
Central Authority ◽  
Energy Trading ◽  
Blockchain Technology ◽  
Energy Trade ◽  
Decentralized Energy ◽  
And Control

A central authority, in a conventional centralized energy trading market, superintends energy and financial transactions. The central authority manages and controls transparent energy trading between producer and consumer, imposes a penalty in case of contract violation, and disburses numerous rewards. However, the management and control through the third party pose a significant threat to the security and privacy of consumers’/producers’ (participants) profiles. The energy transactions between participants involving central authority utilize users’ time, money, and impose a computational burden over the central controlling authority. The Blockchain-based decentralized energy transaction concept, bypassing the central authority, is proposed in Smart Grid (SG) by researchers. Blockchain technology braces the concept of Peer-to-Peer (P2P) energy transactions. This work encompasses the SolarCoin-based digital currency blockchain model for SG incorporating RE. Energy transactions from Prosumer (P) to Prosumer, Energy District to Energy District, and Energy District to SG are thoroughly investigated and analyzed in this work. A robust demand-side optimized model is proposed using Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) to maximize Prosumer Energy Surplus (PES), Grid revenue (GR), percentage energy transactions accomplished, and decreased Prosumer Energy Cost (PEC). Real-time averaged energy data of Australia are employed, and a piece-wise energy price mechanism is implemented in this work. The graphical analysis and tabular statistics manifest the efficacy of the proposed model.

Adaptation of Blockchain Architecture to the Internet of Things and Performance Analysis

2021 ◽  
pp. 48-65
Author(s):  
Mevlut Ersoy ◽  
Asım Sinan Yüksel ◽  
Cihan Yalcin
Keyword(s):  
Internet Of Things ◽  
Embedded System ◽  
Data Transfer ◽  
Security And Privacy ◽  
Transfer Rates ◽  
Blockchain Technology ◽  
Important Challenge ◽  
The Embedded System ◽  
And Performance ◽  
The Internet Of Things

Internet of Things (IoT) security and privacy criteria are seen as an important challenge due to IoT architecture. In this study, the security of the IoT system that is created with devices integrated into the embedded system by means of various sensors has been ensured by using a single cryptographic structure. The data transmitted between the nodes in the IoT structure is transmitted to the central node using the Blockchain data structure. The transmitted data is verified at central nodes and the energies consumed between nodes during the transmission phase is detected. An infrastructure has been developed for how blockchain technology can be used in the IoT structure. In this study, an experimental environment was developed and comparative analysis were made in terms of energy consumption and data transfer rates.

scholarly journals An approach using Trust Management with Next-Generation IoT Networks for Healthcare, Agriculture and Sustainable Development Goals

2021 ◽  
Vol 23 (3) ◽  
Author(s):  
Shubham Joshi ◽  
◽  
Dr. Meghna Dubey ◽  
Dr. Durgesh Kumar Mishra ◽  
◽  
...  
Keyword(s):  
Sustainable Development ◽  
Trust Management ◽  
Sustainable Development Goals ◽  
Security And Privacy ◽  
The Internet ◽  
Next Generation ◽  
Insurance Sector ◽  
Blockchain Technology ◽  
Development Goals ◽  
Significant Compression

The Internet of Things (IoT) is one of the most promising scientific fields of the last decade. The number of devices developed that support Internet things makes the application of internet things more interesting. The field of use includes the insurance sector, intelligent monitoring Environment, Smart City, sector-health care, Intelligent City, and also many other applications enabled for smart devices.The vision of the introduction of the internet, forming a network called IoT, where various information technology devices are connected, security and trust are most important for the user, because this network presumably used a large amount of data.However, trust is a significant obstacle that can hinder the growth of the IoT and even slow down the significant compression of many applications.This paper presents an approach using trust management (TM) with next-generation IoT networks for healthcare, agriculture, and sustainable development goals. Implementation of IoT conveys various problems of security and confidentiality. The use of IoT to ensure confidentiality, integrity, authentication, authorization, trust, secrecy, and management challenges are addressed. The paper uses decentralized blockchain technology to solve security and privacy issues in applications with the support of the IoT.Ethereum virtual machine is used to implement theBlockchain distributed networkand healthcare insurance claims are taken as anexample to test the proposed solution. Also, it is provided that the lessons and opinions discussed are primarily about the purpose of the trust, which can be reproduced in the future on the internet.The results show that distributed blockchain technology provides trust management and can improve the existing security and privacy of the IoT in the health and agriculture sectors, which is helpful for next-generation IoT networks.

scholarly journals SWIPT in mMIMO system with non-linear energy-harvesting terminals: protocol design and performance optimization

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Kui Xu ◽  
Ming Zhang ◽  
Jie Liu ◽  
Nan Sha ◽  
Wei Xie ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Performance Optimization ◽  
Power Transmission ◽  
Base Station ◽  
Second Phase ◽  
Wireless Power ◽  
Half Duplex ◽  
Non Linear ◽  
Two Phases ◽  
And Performance

Abstract In this paper, we design the simultaneous wireless information and power transfer (SWIPT) protocol for massive multi-input multi-output (mMIMO) system with non-linear energy-harvesting (EH) terminals. In this system, the base station (BS) serves a set of uplink fixed half-duplex (HD) terminals with non-linear energy harvester. Considering the non-linearity of practical energy-harvesting circuits, we adopt the realistic non-linear EH model rather than the idealistic linear EH model. The proposed SWIPT protocol can be divided into two phases. The first phase is designed for terminals EH and downlink training. A beam domain energy beamforming method is employed for the wireless power transmission. In the second phase, the BS forms the two-layer receive beamformers for the reception of signals transmitted by terminals. In order to improve the spectral efficiency (SE) of the system, the BS transmit power- and time-switching ratios are optimized. Simulation results show the superiority of the proposed beam-domain SWIPT protocol on SE performance compared with the conventional mMIMO SWIPT protocols.

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