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Mastering Blockchain

Mastering Blockchain

3.3 (10)
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Mastering Blockchain

Mastering Blockchain

3.3 (10)

Overview of this book

Blockchain is a distributed database that enables permanent, transparent, and secure storage of data. The blockchain technology is the backbone of cryptocurrency – in fact, it’s the shared public ledger upon which the entire Bitcoin network relies – and it’s gaining popularity with people who work in finance, government, and the arts. Blockhchain technology uses cryptography to keep data secure. This book gives a detailed description of this leading technology and its implementation in the real world. This book begins with the technical foundations of blockchain, teaching you the fundamentals of cryptography and how it keeps data secure. You will learn about the mechanisms behind cryptocurrencies and how to develop applications using Ethereum, a decentralized virtual machine. You will explore different blockchain solutions and get an exclusive preview into Hyperledger, an upcoming blockchain solution from IBM and the Linux Foundation. You will also be shown how to implement blockchain beyond currencies, scability with blockchain, and the future scope of this fascinating and powerful technology.
Table of Contents (14 chapters)
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10
10. Alternative Blockchains
12
12. Scalability and Other Challenges

Chapter 3. Cryptography and Technical Foundations

In this chapter, you will be introduced to the concepts, theory, and practical aspects of cryptography. More focus will be given to aspects that are specifically relevant in the context of the blockchain technology. Moreover, concepts from financial markets will also be discussed in order to provide a basis for the material covered in later chapters.

You will also be introduced to the practical implementations of cryptographic algorithms so that you can experience the cryptographic functions practically. For this, the OpenSSL command line is used.

Before starting the theoretical foundations, the installation of OpenSSL is discussed in the following section so that you can do some practical work as you read through the theoretical material.

On Ubuntu Linux distribution, OpenSSL is usually already available; however, it can be installed using the following commands:

$ sudo apt-get install openssl

In the upcoming sections, first, the...

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