Learn the basics of blockchain development.

Mastering Blockchain Development

In this module, we’ll learn the fundamentals of blockchain concepts, from its basics to deploying blockchain networks. We will start with basic cryptography constructs, like hash functions and PKI encryption. We’ll also build a solid base for understanding blockchain and appreciate its value. Then, we will explore the Hyperledger Fabric technology by IBM using hands-on development environment within our browser. This module is a great starting point for engineers looking to develop expertise in blockchain technology with Hyperledger Fabric specialty. In this module, we’ll deploy our own blockchain network and deploy chaincode on it. We’ll also create an application that invokes our chaincode running in the fabric network. We’ll also learn how to manage fabric user identities in our application using wallets.

Become a Blockchain Developer

## Wallets and Identities in Client Application

Now lets see how the wallet and user identities work.

We can issue a new user's key and get CA signed cert by contacting the CA. Here are the needed steps:
1. A valid existing user A `registers` a new user X to CA. The CA returns the `enrollment key`.
2. The user A shares that `enrollment key` with X
3. User X/A contacts the CA to `enroll` user X and passes in the `enrollment key`. CA returns valid key and signed certificate for user X.


# Wallets and Identities in Client Application

Now lets see how the wallet and user identities work.

We can issue a new user's key and get CA signed cert by contacting the CA. Here are the needed steps:
1. A valid existing user A `registers` a new user X to CA. The CA returns the `enrollment key`.
2. The user A shares that `enrollment key` with X
3. User X/A contacts the CA to `enroll` user X and passes in the `enrollment key`. CA returns valid key and signed certificate for user X.


In this lesson, we will see how wallets and identities are used in client applications through a sequence diagram.

Introduction - Understanding Blockchain

The Technology Pre-reqs for Understanding Blockchain

Blockchain Data Storage

Understanding the Value of Blockchain (Bitcoin example)

Hyperledger Fabric - Concepts

STEP 1: Deploy First Fabric Network

STEP 2: Write and Deploy Chaincode

STEP 3: Create a Client Application

Conclusion

Wallets and Identities

Wallets and Identities in Client Application #