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Blockchain Developer's Guide

You're reading from   Blockchain Developer's Guide Develop smart applications with Blockchain technologies - Ethereum, JavaScript, Hyperledger Fabric, and Corda

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Product type Course
Published in Dec 2018
Publisher
ISBN-13 9781789954722
Length 564 pages
Edition 1st Edition
Languages
Concepts
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Authors (4):
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Paul Valencourt Paul Valencourt
Author Profile Icon Paul Valencourt
Paul Valencourt
Brenn Hill Brenn Hill
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Brenn Hill
Narayan Prusty Narayan Prusty
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Narayan Prusty
Samanyu Chopra Samanyu Chopra
Author Profile Icon Samanyu Chopra
Samanyu Chopra
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Table of Contents (37) Chapters Close

Title Page
Copyright
About Packt
Contributors
Preface
1. Blockchain 101 FREE CHAPTER 2. Components and Structure of Blockchain 3. Decentralization Versus Distributed Systems 4. Cryptography and Mechanics Behind Blockchain 5. Bitcoin 6. Altcoins 7. Achieving Consensus 8. Advanced Blockchain Concepts 9. Cryptocurrency Wallets 10. Alternate Blockchains 11. Hyperledger and Enterprise Blockchains 12. Ethereum 101 13. Solidity 101 14. Smart Contracts 15. Ethereum Accounts and Ether Tokens 16. Decentralized Applications 17. Mining 18. ICO 101 19. Creating Your Own Currency 20. Scalability and Other Challenges 21. Future of Blockchain 22. Understanding Decentralized Applications 23. Understanding How Ethereum Works 24. Writing Smart Contracts 25. Getting Started with web3.js 26. Building a Wallet Service 27. Building a Smart Contract Deployment Platform 28. Building a Betting App 29. Building Enterprise Level Smart Contracts 30. Building a Consortium Blockchain 1. Other Books You May Enjoy Index

Introduction to LightWallet


LightWallet is an HD wallet that implements BIP32, BIP39, and BIP44. LightWallet provides APIs to create and sign transactions or encrypt and decrypt data using the addresses and keys generated using it.

LightWallet API is divided into four namespaces, that is, keystore, signing, encryption, and txutils. signing, encrpytion, and txutils provide APIs to sign transactions, asymmetric cryptography, and create transactions respectively, whereas a keystore namespace is used to create a keystore, generated seed, and so on. keystore is an object that holds the seed and keys encrypted. The keystore namespace implements transaction signer methods that requires signing the we3.eth.sendTransaction() calls if we are using Hooked-Web3-Provider. Therefore the keystore namespace can automatically create and sign transactions for the addresses that it can find in it. Actually, LightWallet is primarily intended to be a signing provider for the Hooked-Web3-Provider.

A keystore instance...

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