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Mastering Secure Authentication with Spring Security 6.4

Spring Security 6.4 continues to set the standard for securing Java applications, offering modern solutions for authentication, authorization, and protection against vulnerabilities. In this article, we’ll explore its latest features and demonstrate how to implement one-time tokens (OTTs) securely, addressing common pitfalls and best practices.
Part 1: What’s New in Spring Security 6.4?
1. OAuth2 Authorization Server
Spring Security 6.4 simplifies building your own OAuth2 authorization server. Unlike earlier versions, the configuration now uses OAuth2AuthorizationServerConfigurer
:
@Configuration
@EnableWebSecurity
public class OAuth2ServerConfig {
@Bean
public SecurityFilterChain authServerFilterChain(HttpSecurity http) throws Exception {
OAuth2AuthorizationServerConfigurer authServer = new OAuth2AuthorizationServerConfigurer();
http
.with(authServer, Customizer.withDefaults()) // Applies OAuth2 endpoints
.oauth2ResourceServer(oauth2 -> oauth2.jwt(Customizer.withDefaults()))
.formLogin(Customizer.withDefaults());
return http.build();
}
}
Key Benefits:
- Built-in support for token…