Exploring New Additions to Spring Security

Spring Security is a powerful and highly customizable authentication and access-control framework for the Spring Framework. It evolves with each release, incorporating features to address the ever-changing security landscape. Let’s dive into some fresh additions and concepts you can explore to enhance your Spring Security setup.

1. OAuth 2.1 Support

Spring Security now includes improved support for OAuth 2.1, which simplifies OAuth 2.0 by consolidating best practices and removing deprecated functionality. Key enhancements include:

• Authorization Code Flow with PKCE: Proof Key for Code Exchange (PKCE) is mandatory in OAuth 2.1, offering an additional layer of security.
• Simplified Client Registration: Better support for managing client credentials and token requests.
• Improved Token Introspection and Revocation Endpoints.

Example:

@Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
    http
        .oauth2Login()
        .and()
        .oauth2Client();
    return http.build();
}

This configuration enables OAuth 2.1 features including PKCE for enhanced security.

2. Java-based Configuration Enhancements