Securing Spring Boot REST API with Spring Security Digest Authentication

The purpose of this story is to explain how to secure a Spring Boot API using Spring Security Digest Authentication.

· Prerequisites
· Overview
∘ What is Digest Authentication?
∘ Why use Digest Authentication?
∘ Basic Authentication vs. Digest Authentication
· Getting Started
∘ Creating entities
∘ The UserDetailsService
∘ Spring Security configuration
∘ REST Controller
∘ Project structure
· Testing
· Conclusion
· References

Prerequisites

This is the list of all the prerequisites:

• Spring Boot 3+
• Maven 3.6.3
• Java 21
• Postman / insomnia or any other API testing tool.

Overview

What is Digest Authentication?

Digest Authentication tries to overcome some weaknesses of Basic authentication, specifically by ensuring credentials are…