Golang: Intro to REST API JWT auth with Go programming lang

Golang: Intro to JWT Auth with Golang (Go programming language)

Build a user registration and login backend with Golang

Understand JSON Web Tokens (Header, Payload, Signature)

Create RESTful APIs (user signup, login and a protected endpoint)

Authenticate users with email, password and a JWT

Secure RESTful endpoints with JWTs

Examine the internals of a JWT

Sign and validate a JWT

Create a Postgres database instance and a users table and insert records into the table

Examine the definitions of different Golang package methods

Familiar with the basics of Golang and RESTful APIs

Any text editor (preferably visual studio code with golang plugins such as go-to definition)

You will:

- learn the theory behind JSON WEB TOKENs (JWTs) and how they are constructed and used,

- build a Golang (Go programming language) signup handler function that takes the user's credentials such as email and password and saves them on a PostgreSQL database table,

- implement a Golang (Go programming language) utility that generates password hashes with the 'bcrypt' package to avoid storing plain text passwords on the database

- build a Golang (Go programming language) login handler function that takes user credentials and verifies the user based on their supplied credentials

- implement a Token generator utility that takes the user's credentials, and together with developer specified secret and claims, generates a JSON Web Token (JWT),

- create a Golang (Go programming language) middleware function that validates a JWT token upon request to restricted routes

Also, Throughout the process you will learn several Golang (Go programming language) and REST API authentication concepts.

Aside from Golang (Go programming language), some of the major technologies you will use are:

PostgreSQL database to create a database instance and a users table where your records will be stored in,

'jwt-go' package for generating the JSON Web Token and its validation,

'gorilla/mux' package for creating the router that your endpoints and handler functions will be registered on,

'pq' package for parsing your database instance's URL,

'database/sql' package for establishing and maintaining connection with your database instance,

'bcrypt' package for generating and comparing your password hashes,

Postman application for testing your APIs with several HTTP requests

Anyone interested in creating JWT authenticated RESTful APIs with Golang




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