Summary  
This chapter demonstrates how to hash passwords using bcrypt before storage and configure a credentials provider in NextAuth middleware to authenticate users via username and password.  

General domain of usage  
User authentication

Hashing passwords is a safety measure before storing them in a database. It transforms a password into a fixed-length string, appearing random for added security, even if user data is exposed.

In the `seed.js` file, we utilized a package called `bcrypt` to hash the user's password before storing it in the database. We will use `bcrypt` later to compare user-entered passwords with the stored ones.


## Back to the Project
To use `bcrypt` in Next.js Middleware, a separate file named `auth.ts` is created. It includes the `authConfig` object.

### Creadentials Provider
Providers in NextAuth.js are like different login options, such as Google or GitHub. They offer various ways for users to log in.

In the `auth.ts` file, we're adding a provider called `Credentials`. This allows users to log in using a username and password.

Learn to build modern, high-performance web applications using Next.js. Set up projects with structured layouts, styling, and routing for seamless navigation. Fetch and display data efficiently while optimizing rendering and performance. Implement advanced features like pagination, CRUD operations, and global search for dynamic web apps. Deploy your Next.js projects and connect them with databases, and add authentication to protect user data.

Let's discuss what you need to learn before diving into the Next.js framework, what to expect from this course, and what you'll build.

We will set up the project, inspect ways to add styling to our app and cover visual aspects such as images, fonts, pages, and layouts.

Learn how to easily create and manage a new view for your app and navigate through all pages seamlessly with an incorporated routing system.

Deploy the Next.js app using GitHub and Vercel accounts. Additionally, establish a database to supply the app with the necessary data.

Consider how to obtain and show data to the user clearly and efficiently.

Discover how to implement modern web features such as pagination, CRUD operations, global search, form validation, and more.

Authentication implementation in Next.js.

Hashing Passwords and Managing Credentials

Back to the Project

Creadentials Provider

In Practice