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Securing Blockchain Networks like Ethereum and Hyperledger Fabric

You're reading from  Securing Blockchain Networks like Ethereum and Hyperledger Fabric

Product type Book
Published in Apr 2020
Publisher Packt
ISBN-13 9781838646486
Pages 244 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Alessandro Parisi Alessandro Parisi
Profile icon Alessandro Parisi

Table of Contents (15) Chapters

Preface 1. Section 1: Blockchain Security Core Concepts
2. Introducing Blockchain Security and Attack Vectors 3. Cryptography Essentials 4. Blockchain Security Assumptions 5. Section 2: Architecting Blockchain Security
6. Trustless Blockchain Networks 7. Securing Hyperledger Fabric 8. Section 3: Securing Decentralized Apps and Smart Contracts
9. Decentralized Apps and Smart Contracts 10. Preventing Threats for DApps and Smart Contracts 11. Section 4: Preserving Data Integrity and Privacy
12. Exploiting Blockchain as an Attack Vector 13. Analyzing Privacy and GDPR Compliance Issues 14. Other Books You May Enjoy

The building blocks of blockchain

Now, we're going to analyze the constituent elements of the blockchain and start with the blocks. As we mentioned earlier, transactions are stored within the blockchain blocks, so each block is composed of two parts:

  • A block header, in which the link to the previous block is stored in the form of a hashing checksum digest. This is done to prevent the possibility of altering the transactions stored in the previous block.
  • A block body, containing the list of transactions, complete with relevant information (including the amount transferred, the addresses of peers, and so on).

The following diagram shows the structure of Bitcoin blocks and their mutual relationships within the blockchain:

You can check out the image in the following link, https://commons.m.wikimedia.org/wiki/File:Bitcoin_Block_Data.png. As a consequence of how the blocks...

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Securing Blockchain Networks like Ethereum and Hyperledger Fabric
Published in: Apr 2020 Publisher: Packt ISBN-13: 9781838646486
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