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MACHINE LEARNING APPROACHES FOR CONVERGENCE OF IOT AND BLOCKCHAIN The unique aspect of this book is that its focus is the convergence of machine learning, IoT, and blockchain in a single publication. Blockchain technology and the Internet of Things (IoT) are two of the most impactful trends to have emerged in the field of machine learning. Although there are a number of books available solely on the subjects of machine learning, IoT and blockchain technology, no such book has been available which focuses on machine learning techniques for IoT and blockchain convergence until now. Thus, this book is unique in terms of the topics it covers. Designed as an essential guide for all academicians, researchers, and those in industry who are working in related fields, this book will provide insights into the convergence of blockchain technology and the IoT with machine learning. Highlights of the book include: * Examines many industries such as agriculture, manufacturing, food production, healthcare, the military, and IT * Security of the Internet of Things using blockchain and AI * Developing smart cities and transportation systems using machine learning and IoT Audience The target audience of this book is professionals and researchers (artificial intelligence specialists, systems engineers, information technologists) in the fields of machine learning, IoT, and blockchain technology.
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Veröffentlichungsjahr: 2021
Cover
Title page
Copyright
Preface
1 Blockchain and Internet of Things Across Industries
1.1 Introduction
1.2 Insight About Industry
1.3 What is Blockchain?
1.4 What is IoT?
1.5 Combining IoT and Blockchain
1.6 Observing Economic Growth and Technology’s Impact
1.7 Applications of IoT and Blockchain Beyond Industries
1.8 Conclusion
References
2 Layered Safety Model for IoT Services Through Blockchain
2.1 Introduction
2.2 IoT Applications
2.3 IoT Model With Communication Parameters
2.4 Security and Privacy in IoT Services
2.5 Blockchain Usages in IoT
2.6 Blockchain Model With Cryptography
2.7 Solution to IoT Through Blockchain
2.8 Conclusion
References
3 Internet of Things Security Using AI and Blockchain
3.1 Introduction
3.2 IoT and Its Application
3.3 Most Popular IoT and Their Uses
3.4 Use of IoT in Security
3.5 What is AI?
3.6 Applications of AI
3.7 AI and Security
3.8 Advantages of AI
3.9 Timeline of Blockchain
3.10 Types of Blockchain
3.11 Working of Blockchain
3.12 Advantages of Blockchain Technology
3.13 Using Blockchain Technology With IoT
3.14 IoT Security Using AI and Blockchain
3.15 AI Integrated IoT Home Monitoring System
3.16 Smart Homes With the Concept of Blockchain and AI
3.17 Smart Sensors
3.18 Authentication Using Blockchain
3.19 Banking Transactions Using Blockchain
3.20 Security Camera
3.21 Other Ways to Fight Cyber Attacks
3.22 Statistics on Cyber Attacks
3.23 Conclusion
References
4 Amalgamation of IoT, ML, and Blockchain in the Healthcare Regime
4.1 Introduction
4.2 What is Internet of Things?
4.3 Machine Learning
4.4 Role of the Blockchain in the Healthcare Field
4.5 Conclusion
References
5 Application of Machine Learning and IoT for Smart Cities
5.1 Functionality of Image Analytics
5.2 Issues Related to Security and Privacy in IoT
5.3 Machine Learning Algorithms and Blockchain Methodologies
5.4 Machine Learning Open Source Tools for Big Data
5.5 Approaches and Challenges of Machine Learning Algorithms in Big Data
5.6 Conclusion
References
6 Machine Learning Applications for IoT Healthcare
6.1 Introduction
6.2 Machine Learning
6.3 IoT in Healthcare
6.4 Machine Learning and IoT
6.5 Conclusion
References
7 Blockchain for Vehicular Ad Hoc Network and Intelligent Transportation System: A Comprehensive Study
7.1 Introduction
7.2 Related Work
7.3 Connected Vehicles and Intelligent Transportation System
7.4 An ITS-Oriented Blockchain Model
7.5 Need of Blockchain
7.6 Implementation of Blockchain Supported Intelligent Vehicles
7.7 Conclusion
7.8 Future Scope
References
8 Applications of Image Processing in Teleradiology for the Medical Data Analysis and Transfer Based on IOT
8.1 Introduction
8.2 Pre-Processing
8.3 Improved FCM Based on Crow Search Optimization
8.4 Prediction-Based Lossless Compression Model
8.5 Results and Discussion
8.6 Conclusion
Acknowledgment
References
9 Innovative Ideas to Build Smart Cities with the Help of Machine and Deep Learning and IoT
9.1 Introduction
9.2 Related Work
9.3 What Makes Smart Cities Smart?
9.4 In Healthcare System
9.5 In Homes
9.6 In Aviation
9.7 In Solving Social Problems
9.8 Uses of AI-People
9.9 Difficulties and Profit
9.10 Innovations in Smart Cities
9.11 Beyond Humans Focus
9.12 Illustrative Arrangement
9.13 Smart Cities with No Differentiation
9.14 Smart City and AI
9.15 Further Associated Technologies
9.16 Challenges and Issues
9.17 Conclusion and Future Scope
References
Index
End User License Agreement
Cover
Table of Contents
Title page
Copyright
Preface
Begin Reading
Index
End User License Agreement
Chapter 1
Figure 1.1 Industries in focus.
Figure 1.2 Illustration of blockchain technology.
Figure 1.3 Illustration of IoT.
Figure 1.4 IoT and blockchain across industries.
Figure 1.5 IoT and Blockchain in agriculture industry.
Figure 1.6 IoT and blockchain in manufacturing industry.
Figure 1.7 IoT and blockchain in food processing industry.
Figure 1.8 IoT and blockchain in healthcare industry.
Figure 1.9 IoT and blockchain in military.
Figure 1.10 India’s economic growth from 2005 to 2018.
Figure 1.11 Internet users.
Figure 1.12 Smart homes technology.
Figure 1.13 Specialized surveillance using IoT and blockchain.
Figure 1.14 Smart street lighting enabled with IoT and blockchain.
Chapter 2
Figure 2.1 Interconnection of IoT services.
Figure 2.2 Architecture of IoT services.
Figure 2.3 Application areas of IoT services.
Figure 2.4 IoT reference model (Source Minolli [65]).
Figure 2.5 Layered architecture of blockchain with cryptography.
Figure 2.6 Security solution to IoT through cryptography (Source [16] Yang).
Figure 2.7 Blockchain in smart cities [Reference by Minoli 1-2 (2018)].
Chapter 3
Figure 3.1 IoT and its applications.
Figure 3.2 IoT and its components.
Figure 3.3 Industrial IoT security statistics 2017.
Figure 3.4 Development of blockchain over the years.
Figure 3.5 Types of blockchain.
Figure 3.6 Structure of blockchain.
Figure 3.7 Applications of blockchain.
Figure 3.8 AI integrated IoT home monitoring system.
Figure 3.9 Smart home.
Figure 3.10 Blockchain authentication.
Figure 3.11 Smart traffic security.
Figure 3.12 Number of cyber attacks.
Figure 3.13 Cyber attacks across various countries.
Figure 3.14 Number of data breaches.
Chapter 4
Figure 4.1 Application of the IoT.
Figure 4.2 Contribution of IoT in different sectors.
Figure 4.3 Market forecast of IoMT.
Figure 4.4 A deep neural networks with three hidden layers [19].
Figure 4.5 Architecture of multilayer perceptron neural network [23].
Figure 4.6 Applications of deep learning in the healthcare sector.
Figure 4.7 Pillars of Blockchain technology [25].
Chapter 5
Figure 5.1 Process of literature review.
Figure 5.2 Research domains.
Figure 5.3 Implementation of ML in smart buildings.
Figure 5.4 Intelligence levels for smart cities [8].
Chapter 6
Figure 6.1 ML development phases for healthcare.
Figure 6.2 Sources of data for healthcare.
Figure 6.3 Commonly used medical imaging modalities.
Figure 6.4 IoT architecture for healthcare.
Chapter 7
Figure 7.1 System design of blockchain.
Figure 7.2 Architecture of intelligent vehicle [55].
Figure 7.3 Blockchain technology.
Figure 7.4 An ITS-oriented blockchain model [59].
Figure 7.5 Expected potential attack surface [55].
Figure 7.6 Issues emerging in the application of blockchain technology with tran...
Figure 7.7 Basic mechanism of blockchain [94].
Chapter 8
Figure 8.1 Flowchart of FCM clustering.
Figure 8.2 Flowchart of crow search optimization algorithm.
Figure 8.3 Flowchart of prediction-based lossless compression model.
Figure 8.4 Image compression based on least square based prediction.
Figure 8.5 Segmentation results corresponding to images from the brain web datab...
Figure 8.6 Segmentation results correspond to real-time abdomen CT images. (a) I...
Figure 8.7 Segmentation results correspond to real-time MR brain images. (a) Inp...
Figure 8.8 Performance plot of partition coefficient and entropy.
Figure 8.9 Performance plot of Xie and Beni Index.
Figure 8.10 Performance plot of Fukuyama and Sugeno Index.
Figure 8.11 Compression results corresponding to real-time abdomen CT images. (a...
Figure 8.12 Compression results corresponding to real-time brain MR images. (a) ...
Figure 8.13 Performance plot of compression ratio.
Figure 8.14 Performance plot of FSSIM.
Figure 8.15 Performance plot of PSNR.
Figure 8.16 Performance plot of SC.
Figure 8.17 Performance plot of NK.
Figure 8.18 Performance plot of LMSE.
Figure 8.19 Performance plot of NAE.
Figure 8.20 Performance plot of compression quality.
Figure 8.21 Hardware implementation of the image processing algorithms. (a) Fron...
Figure 8.22 GUI interface for the loading of the DICOM image.
Figure 8.23 Options available in the GUI interface.
Figure 8.24 CROW-FCM segmentation result.
Figure 8.25 Stages of GUI for feeding the compressed images into the cloud. (a) ...
Chapter 9
Figure 9.1 Impact of IT on top urban populace.
Figure 9.2 Smart cities overview.
Figure 9.3 Traffic management.
Figure 9.4 Smart parking.
Figure 9.5 Smart policing.
Figure 9.6 Shrewd lighting.
Figure 9.7 Smart power.
Figure 9.8 Google maps.
Figure 9.9 Innovation in urban communities.
Figure 9.10 Smart cities for all.
Figure 9.11 Smart cities to prevent road accidents.
Figure 9.12 Applications of IoT.
Chapter 3
Table 3.1 Difference between public, private, and consortium blockchain.
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Scrivener Publishing100 Cummings Center, Suite 541JBeverly, MA 01915-6106
Publishers at ScrivenerMartin Scrivener ([email protected])Phillip Carmical ([email protected])
Edited by
Krishna Kant Singh
Faculty of Engineering & Technology, Jain (Deemed-to-be University), Bengaluru, India
Akansha Singh
Amity University Uttar Pradesh, Noida, India
and
Sanjay Sharma
KIET Group of Institutions, Delhi-NCR, Ghaziabad, India
This edition first published 2021 by John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, USA and Scrivener Publishing LLC, 100 Cummings Center, Suite 541J, Beverly, MA 01915, USA
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Blockchain technology and the Internet of Things (IoT) are two of the most impactful trends to have emerged in the field of machine learning. And although there are a number of books available solely on the subjects of machine learning, IoT and blockchain technology, no such book has been available which focuses on machine learning techniques for IoT and blockchain convergence until now. Thus, this book is unique in terms of the topics it covers. Designed as an essential guide for all academicians, researchers and those in industry who are working in related fields, this book will provide insights into the convergence of blockchain technology and the IoT with machine learning.
A rapidly advancing fourth industrial revolution, brought about by a digital revolution characterized by the convergence of technologies, is blurring the lines between physical, digital and biological objects. The speed of the fourth revolution, which is evolving at an exponential rate, certainly cannot be compared with that of any previous technologies. Some of these technologies include the artificial intelligence (AI) and IoT currently being used in interactions and operations in various fields such as home appliances, autonomous vehicles, nanotechnology, robotics, cognitive systems and wearable devices; and nowadays the potential of blockchain technology is also being realized in many sectors as well, since security is a crucial factor everywhere.
Readers in many domains will be interested in this book as it covers two major areas of the field of machine learning—blockchain technology and the IoT. Also, it will be appealing for those who want to further their research in this area, as the latest topics are covered. Therefore, the target audience of this book is composed of professionals and researchers working in the field of machine learning with IoT and blockchain technology. Moreover, the book will provide insights and support from practitioners and academia in order to highlight the most debated aspects in the field. A detailed description of each topic relevant to machine learning technologies is presented along with the concepts involved in their convergence. In addition, research problems are included to facilitate further research based on the concepts described in the book.
First and foremost, we express heartfelt appreciation to all contributing authors for their hard work and patience. I would like to thank them for contributing chapters in this book. Thanks to the Scrivener Publishing team who helped us so much. Special thanks to Martin Scrivener for all his support, suggestions, and patience.
The EditorsJune 2021
Ananya Rakhra*, Raghav Gupta and Akansha Singh
Department of CSE, ASET, Amity University, Noida, Uttar Pradesh, India
Abstract
In this chapter, we will come across different kinds of industries and how Internet of Things and blockchain technologies are applied to them. We commence with an overview about what an industry is and the nature of various industries, followed by knowledge about the technologies of IoT and blockchain. These technologies have facilitated advancement and ease in one’s day-to-day life, the industrial sector being one among many where its impact is prevalent notably. Further, incorporation of these technologies across various sectors of industry and their scope has been focused upon. The advancements brought about, especially in fields such as that of healthcare sector, have revolutionized the previously existing methods, helping us attain better care and improved life expectancy. Also, the scope of these technologies beyond the industrial sector has been discussed. These technologies have facilitated specialization, so much so that its positive imprint can clearly be seen onto the nation’s economy. This text on the whole allows the readers to attain a clear understanding and also unveils the great scope for further research and development offered by this sphere.
Keywords: IoT, Internet of Things, blockchain, technology, industry, smart devices
Through the course of this chapter, we will come across various types of industries and how implementing IoT and blockchain through these industries will help facilitate the achievement of enormous endeavors beyond the scope one could think of a few years ago. These technologies have widened prospective and enhanced scope across varied fields; we will attempt to obtain an in-depth understanding of the same. Industries form the backbone of a country’s economy. Any organization that is involved in large-scale production or providing services to a lot of customers is categorized as an industry. According to the purpose of the industry, they are classified as the primary, secondary, and tertiary sectors. Classification based on the organisational framework of an industry is done as organized and unorganized sectors of industry. Categorization may also be done according to the ownership of the firm as either public or private sector industry. Each industry has varying demands and requirements based on the nature of production or service that they intend to provide. We will explore this phenomenon through the domains of various industries, for example, the agriculture industry, manufacturing industry, food production units, healthcare, military, it sector, and banking. We will see what the goals and functions of these industries are and how the efficiency and output can be highly improved, along with reducing human effort and also increasing accuracy. Then, we will move on to learn about the blockchain technology, its mechanism, requirements, advantages, and disadvantages. Blockchain technology is basically the practice of storing data into blocks that are connected to each other in the form of a chain. The distinctive feature of this technology is that once the data is entered into this chain it is immutable, which provides a very strong system to prevent any sort of tampering with the stored data, hence ensuring high level security. The chains are also encrypted and decentralized which further enhance its security. Next, we will look into what IoT is, how it works, and how it is beneficial to us. IoT is the acronym for Internet of Things, wherein we basically connect the physical devices to each other over a network enabling them to communicate and share information among each other. Here, devices are able to gain knowledge about their surroundings with the help of sensors. Common examples of IoT that have been incorporated in daily life are smart watches, smart lighting for households, surveillance cameras, etc. After understanding the functioning and applications of these, we will further see their combined applications of these two technologies in the industry. Incorporating these technologies in the industry opens up a very broad perspective to achieve new levels of specialization. Human tasks have been eased and accuracy and precision has spiked because of these. Profits made by companies have also seen increment; hence, it has proved beneficial to industries in a lot many ways. Further through the course of this chapter, after looking into the non-industrial applications of these technologies in depth, exploring various domains of implementation we will next see the applications and scope of these technologies beyond industries as well. In particular, we will be looking into how they have helped enhance life in different possible ways. First, we will get to know what smart homes are and study the involvement of these technologies in its creation and implementation. This advancement has brought about a lot of ease and pace into one’s day-to-day household tasks and also evolved one’s lifestyle. Then, we will read about how security via surveillance has been technologically boosted with the coming of IoT and blockchain into this sphere. The ways of monitoring have been specialized and the security of the data thus obtained is also highly increased due the usage of blockchain. Life and property are now being better guarded with the help of these. Smart solutions such as automated street lighting have also come up which contribute toward saving energy and resources, and incorporation of security mechanisms such as surveillance along with the street lights making the equipment multi-purpose and more useful. Let us begin with introducing what an industry is and how it functions.
In today’s time, the types and scope of industries are massive. Industries have met with a lot of varied applications and requirements and are serving to facilitate the same. These industries provide to serve needs of mankind, ranging from the most basic necessities to comfort and exotic offerings. Industry can be referred to as any large-scale productive activity. It is these industries that strengthen a nation’s economy, fulfils its needs, and provide safety, security, etc. Most spheres around us are industries in themselves. Some sectors of industry are depicted in Figure 1.1. The main features of any industry are large-scale production, specialization, research and development, mechanization, standardization, and management. We will now look into types or classification of industries and get to know about each one of them individually [1]. Industries can broadly be classified into the sectors: primary, secondary, and tertiary. The primary sector comprises of industries that are mainly involved in the extraction of raw materials, for examples, industries extracting metals from their ore, mining, and farming.
The secondary sector is where industries perform manufacturing and packaging of goods and commodities, examples of this sector of industries include food processing industries, car part manufacturing, and other such industries. The tertiary sector is also known as the service sector; industries such as IT, defence services, judicial workforce, banking, and teaching come under this category. Other bases of classification are either as organized and unorganized sector industry or as public sector or private sector industry. Organized industry sector is such that all its employees are assured work throughout their employment and there terms for the same are fixed and regular. In contrast, the unorganized sector provides flexible employment at the discretion of the employer and there exist no regularity or guarantee of the employment term, also such institutions may not necessarily be registered with the government. Public sector industries are those which are owned, funded, and managed by the government and like most other government jobs provide benefits to its workers such as pension. Private sector industries are owned by individual or partnerships between individuals.
Figure 1.1 Industries in focus.
The main motive of the individual running the company is to earn profit and these are not state controlled. The terms of employment may vary from company to company based on the interests of the owner. In India, most of the private sector industries are known to be paying higher salaries to its employees as compared to government industries but government jobs are seen to offer more job security benefits while under employment and even after it. All these are interdependent, we may say that primary sector industries are responsible for production of raw materials, the secondary sector process these raw materials to transform them into useful goods, and the tertiary sector utilizes and makes these products available to the consumers. Let us now focus on some industries and understand their requirements and production mechanisms.
In this part, we will be discussing about all the various industries, their functioning, and the importance that they hold. Let us understand the working of a few industries.
This is one of the most important sectors as it caters to resolve the hunger of the country’s entire population. This industry is the source of livelihood to about 58% of India’s population. Most of the agricultural plots happen to be in the rural areas where development is far behind that in the bigger towns and cities. In India, particularly, agriculture is very widely practiced and it serves as the source of income to a considerably large section of India’s working population, both men and women. Especially the residents of suburbs, villages and small towns have taken to agriculture as their means of employment and livelihood. Industrial agriculture is the practice of monoculture of a particular crop to be sold commercially, i.e., not only for the purpose of one’s own usage. Cultivation of any crop requires resources such as land, soil, water, and fertilizers along with knowledge, dedicated, constant attention, and care. It is one sphere that requires physically intensive efforts especially if there is an absence of machinery. In earlier times, when technology was not what we know it as today, agriculture was practiced with the help of animals to facilitate various tasks. In present times, with the ever increasing size of the population the demand for food crops is also going up, the scope of agricultural produce is local, national as well as international as there is a massive trade prevalent between various countries over the exchange of these commodities, which, in turn, adds to the economy of the country. The crop needs constant care and treatment from the time the seeds are sown up until its harvest. The produce from this industry serves as raw material for certain other industries therefore the need to ensure good product quality is further heightened as it will directly impact the other sectors as well. Incorporation of advanced technologies has benefitted this sector extensively, which we shall look into later in the course of this chapter.
Manufacturing industry is a broad term used to refer to any industry that is involved in the task of production of any particular commodity. Considering the example of a car manufacturing company, there exist various stages of manufacturing and assembling different components. Precision remains a key necessity to ensure proper product quality as even if a single part deviates from its correct dimensions, the end result would be faulty leading to wastage of resources, money, and time. The other key requirement is to ensure maximum utilization of available machinery to increase production and thus profit. The quality of a raw material chosen also plays a major role in determining the finished product and hence needs to be kept under check. Keeping track of quantities of each part that is produced and sent down the assembly line is a cumbersome yet essential task. Record of date of production and assembly of parts need be kept as in case a fault in equipment is seen later, it will be necessary to trace down the articles that went through it as there may be risk of faulty products having been produced. Also, to provide good after sales care to the users and to ensure timely renewal or maintenance is carried out as per requirement. Lastly, demand of any particular product should be kept under consideration so as to increase or decrease the quantity to maintain the demand supply chain.
The major difficulty for this industry is the perishable nature of food items. Storage and processing need to be carried out at suitable temperature so as to keep the commodity intact. The accuracy of the date of manufacture and date of expiry that are mentioned on the packaging needs to be maintained. Like any other manufacturing, a proper record needs to be maintained as to which product is processed with which equipment and at what time so that in case a fault is found in any equipment, the products requiring a review can be tracked. Since food items are meant for consumption by the customers, certain standards pertaining to the quality and handling of these commodities need to be kept under consideration. It is also recommended that a complete record of where the raw material was obtained from, how was has been transported, processed, packed, and delivered should be kept and should also be made available to any customer who may want to know the same. The ingredients must also be mentioned correctly as a considerable chunk of population beholds allergies; therefore, the correct composition of the product should be mentioned. Another key factor is to maintain hygienic conditions at all levels of handling food stuff, any contamination to edible products may make the consumer ill, which would, in turn, invoke legal response against the manufacturing unit depending upon the severity of harm caused. This industry also needs to keep a close watch at the demand and supply chain because of the perishable nature; some items may not have a very long shelf life.
This industry has become one of India’s biggest sectors in term of both economy as well as employment. It is also a primary determinant factor for the GDP of a country. This is one such critical industry that encompasses great responsibility and attention. Even the minute details sometimes end up putting a patient’s life at stake. Specialization and accuracy form its foundation. In any condition ranging from minor discomfort, fever to emergencies such as a fracture or heart attack are all taken care of by this sector. The composition of the services it provides covers prevention, diagnosis, treatment, and medical rehabilitation. Herein, it is essential to keep accurate and updated records of the available drugs as in case a patient requires its administration it must be available and should be well within its shelf life. Hospitals need to maintain proper records of the patient who have been treated and store case history along with the treatment provided to any individual. For patients suffering from a chronic disease, case history must be available in case the patient is brought in emergency. This industry also performs surgeries and transplants in keeping with procedures to cure or lengthen the life span of the patients. In this process, certain highly specialized surgeries are sometimes conducted which require sophisticated equipment and knowledge.
This industry comes under the tertiary sector as it is a form a service to a nation and its citizens. The Indian Armed Force is under the Government of India and is managed by the Ministry of Defence (MoD). India possesses the world’s second largest military after China. The military service in India serves in three three wings each for a different landform. The three arms are the Army, the Air Force, and the Navy. The Army is the ground force that battles any threat that prevails in their country on land. The Air force is the unit that takes charge of all the aerial operations and security. The naval force maintains the safety of the waters that come under the jurisdiction of the country. All these forces have officers that are allotted various ranks and positions according to their specialization; the highest rank is that of the chief who also holds the responsibility of making all the crucial decisions. Each officer has to qualify for the National Defence Academy (NDA) where they undergo rigorous training and are toughened to withstand extreme conditions. This indeed is one of the most disciplined industries of all. This industry’s peculiar feature is the intelligence service, who serves to keep a close watch on the activities in and around the country, they also keep a close watch on the happenings of their rival countries to ensure that if there happens to be any threat to their country, they’re sufficiently prepared to counteract. India has the world’s third largest defence budget which enables it to equip itself with aircrafts and other machinery that are par above other countries.
IT industry stands for Information and technology industry [2]. IT sector has been majorly responsible for transforming India into a global economy since we have received multiple outsourced and mediated technology-based work contracts. These are the companies that provide us with computing solutions as well as other hardware and software applications such as Intel, Hcl, and Apple. Utilization of computers for storage, transmission, manipulation and retrieval of data or information is the basis of this type of industry. This sector has gained advancement and has enlarged considerably in our country over the last few years, generating employment for a huge chunk of the population and also contributing to the country’s overall economy. The major IT hubs in India are Bangalore, Chennai, Noida, and Hyderabad. The initial wave of the IT industry that we see today was first established when the government set up the Software Technology Parks of India (STPI) in the early 90s. Let us consider a day-to-day life scenario as an example to understand the services and features of the IT industry. So, consider that a person is facing trouble with the signal strength on his mobile device. He will convey his problem to the customer care service that the network company offers. They will then work toward tracing the cause of inconvenience, if it is a faulty sim card or a trouble with the signal tower of that area and then work for providing a solution at the earliest possible. Network provider is one type of industry that comes under the IT sector; many such companies exist under this sector functioning under the umbrella of information and technology.
In layman’s language we may understand it as a chain of blocks containing information as illustrated in Figure 1.2. The original purpose of blockchain was to time stamp documents however it did not find much application [3]. The blockchain majorly picked up popularity when it was adapted to create a digital cryptocurrency—Bitcoin, by Satoshi Nakamoto in 2009. The most prominent feature of blockchain is that once any information is entered, it is nearly impossible to edit or delete it. Each block in a blockchain has three components associated to it, which are data, hash, and hash of the previous block. The data of a block contains information relevant to the purpose which the chain is utilized for. The next component, i.e., hash is like the finger print of the block and is thus unique to every block. The hash of a block is calculated after the data in entered. Therefore, if the content of any block is tampered with, it, in turn, changes the hash, and hence, it is no longer the same block, and this feature particularly allows us to ensure that any information once entered in a blockchain cannot be modified or deleted. The third component of a block is the hash of the previous block. Each block contains the hash of the previous block which enables the chain formation. If any block in this chain is modified, its hash changes, hence breaking the linkage through the entire length of the chain, disrupting the entire chain formation. This is how the safety and integrity of any blockchain is ensured. The first block of a blockchain is referred to as genesis block.
Figure 1.2 Illustration of blockchain technology.
Let us now understand how blockchain ensures a high level of security. Firstly, since each block contains the hash of the previous block, it is not possible to modify the content of any block without disrupting the chain henceforth. Secondly, this technology follows a practice called proof of work. Hashes are insufficient to ensure protection because computers these days are fast enough to recalculate all the hashes of the blocks within seconds; this is where proof of work comes into the picture. Through this method, we considerably increase the time required to calculate the hash of a single block. These two features when put together enhance the security mechanism. Thirdly, the entire blockchain in available to all its users; in other words, we may say that a blockchain is distributed. This peer-to-peer network enables all members to receive any new block that is formed; it is then verified by each node and is given consensus, only then it is incorporated into the chain. So, in case a block comes up that is tampered with it will be rejected be the other nodes [4]. The benefits of this architecture as observed are tamper-proof nature and better traceability along with resolving trust issues that may otherwise interrupt the supply chain [5]. Blockchain can fall under two categories private and public. A public blockchain is a completely transparent ledger and is decentralized. The information in this platform is encrypted and can be accessed on multiple devices. A public blockchain is nearly impossible to hack, as that will require acceptance from at least 51% of the nodes which is very difficult to attain for a malicious task, as the total number of nodes connected to this chain is very large. In contrast, a private blockchain has a limited audience that can access the content stored on the blockchain. It is an invitation only blockchain and is under the control of a single entity, hence not decentralized. A public blockchain is comparatively more secure than a private one.
Although every user in the network has access to all the blocks, not complete knowledge of any transaction or activity may be gained by all users. The details of all transactions are encrypted. For examples, if user A buys apples from user B via this network, the other users can know that there has been a transaction but would not attain all details, i.e., they may know that there has been a transaction but may not know that is was held for the exchange of apples. Most of the platforms or services that we use today be it Facebook or Google are centralized in nature and they have a lot of control in terms of privacy, and you may not be willing to give any one entity access to all your data. So, blockchain technology overcomes this concern where no one node or entity can have monotonous control or access to any piece of information.
The most common application of blockchain is seen in the cryptographic currency of Bitcoin. Cryptocurrency is a completely digital form of money. A distinctive feature of transaction with Bitcoins is that there is no requirement for a mediating institution. A conventional electronic payment involves third party other than the buyer and seller, usually a bank that facilitates the transfer of money. This technology of Bitcoin eliminates the need of any such mediation. Also, the Bitcoins are decentralized which implies that their distribution and circulation globally can be monitored by a government or any similar organisation. Whenever a bitcoin transaction occurs, the blockchain records the sender’s and receiver’s Bitcoin addresses along with the amount. Each transaction is encrypted with public key cryptography and verified by multiple nodes; these transactions cannot be tampered with. The computers than individuals connect onto this network are referred to as bitcoin miners. The cost of entering into the Bitcoin network is fairly high and bitcoins can only be profitably mined using specialized devices. As the number of nodes in the network increases the difficulty of mining generally increases. What attracts people to bitcoins is to keep their money safe in a bitcoin network as compared to any bank. Some people see it as an investment but there happens to be lot of risk but it is claimed that by 2040 this network will be very well established. Even though we presently seem to observe bitcoins as the only major application of blockchain, a lot of scope beholds for this technology some aspects of which we will be coming across through the course of this chapter [6].
Another growing application of blockchain is the Smart contract. The purpose of smart contract resembles just what a usual contract does i.e., beholds conditions, clauses and agreements. The only difference is that here they are stored as a few lines of code that is kept safe inside a blockchain. Also, this technology allows two parties to bind a contract without the requirement of any third party mediation. These are beneficial and binding as once the details of a smart contract are put in to a blockchain they cannot be modified. We specify the terms and condition of the contact along with the fulfilment condition, this is an efficient means to seal a contract because once made it cannot be manipulated or breached. For example, person A promises to deliver a commodity to person B after exactly 1 year from signing the contract. In this case a smart contract may be brought to effect specifying that the payment made by person B shall only be received by person A on the fulfilment of the contract, till then it may be held as cryptocurrency within the smart contract.
The drawback associated with the bitcoin application of blockchain technology is that the value of a bit coin is highly variable and thus faces a lot of risk. Also this technology demands for very high energy consumption. The data stored in a blockchain is immutable which particularly serves as an advantage and a disadvantage at the same time. Along with these, blockchain technology possesses a high implementation cost. Finally, this technology is not yet standardized or practiced regularly creating an air of ambiguity about it.
IoT stands for Internet of Things. The motive of using IoT is to connect the physical devices present across the globe to each other via a wireless network and to allow them to communicate without any human interference as depicted in Figure 1.3. In today’s world, we witnesses the impact of IoT in our daily lives ranging from the way we drive to how we attain energy in our homes. Some simple examples of IoT that we come across nowadays are say a light bulb that can be switched on using a mobile application. Here, the mobile and the light bulb are allowed to communicate without any human interruption to perform a task, which in this case is to switch the bulb on or off. We witness IoT through various complexities ranging from maybe a child’s stuff toy to much more complex applications such as highly specialized healthcare. A brief insight into the history of IoT tells us that the term “Internet of Things” was coined by Kevin Ashton; however, the concept of connected devices came into existence long back dating to 1830s when the first electronic telegraph was developed. This field has gained a lot of sophistication since then and stands at the levels we see it at today and there yet lies more scope to unveil its advanced applications further.
Figure 1.3 Illustration of IoT.
But firstly let us see how IoT works. Four basic contents for IoT are sensors, connectivity, data processing, and finally a user interface. The first key requirement for any device connected to IoT is to first be able to gather the information that it wants to process and communicate to other devices over the network. This is possible with the help of sensors, since they can detect an event or change in the environment of the device that they are attached to. The sensors may be in the form of cameras, microphones, motion sensors, accelerometers, temperature sensors, etc., allowing any device to know its surroundings without requiring any human interventions. The information or data through these sensors is continuously sent to a cloud or server that the device is connected to from where other