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Mastering Blockchain - Fourth Edition

You're reading from  Mastering Blockchain - Fourth Edition

Product type Book
Published in Mar 2023
Publisher Packt
ISBN-13 9781803241067
Pages 818 pages
Edition 4th Edition
Languages
Concepts
Author (1):
Imran Bashir Imran Bashir
Profile icon Imran Bashir
Toc

Table of Contents (24) Chapters close

Preface 1. Blockchain 101 2. Decentralization 3. Symmetric Cryptography 4. Asymmetric Cryptography 5. Consensus Algorithms 6. Bitcoin Architecture 7. Bitcoin in Practice 8. Smart Contracts 9. Ethereum Architecture 10. Ethereum in Practice 11. Tools, Languages, and Frameworks for Ethereum Developers 12. Web3 Development Using Ethereum 13. The Merge and Beyond 14. Hyperledger 15. Tokenization 16. Enterprise Blockchain 17. Scalability 18. Blockchain Privacy 19. Blockchain Security 20. Decentralized Identity 21. Decentralized Finance 22. Blockchain Applications and What’s Next 23. Index

Asymmetric cryptography

Asymmetric cryptography refers to a type of cryptography where the key that is used to encrypt the data is different from the key that is used to decrypt the data. These keys are called private and public keys, respectively, which is why asymmetric cryptography is also known as public key cryptography. It uses both public and private keys to encrypt and decrypt data, respectively. Various asymmetric cryptography schemes are in use, including RSA and ElGamal encryption.

A generic depiction of public-key cryptography is shown in the following diagram:

Figure 4.1: Encryption/decryption using public/private keys

The preceding diagram illustrates how a sender encrypts data P using the recipient's public key and encryption function, and produces an output encrypted data C, which is then transmitted over the network to the receiver. Once it reaches the receiver, it can be decrypted using the receiver's private key by feeding the C encrypted data into decryption...

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