JWT Authentication in Spring Security

Moving forward, let’s examine the architectural elements employed by Spring Security to facilitate JWT Authentication in servlet-based applications, similar to the one we previously discussed.

The JwtAuthenticationProvider serves as an implementation of AuthenticationProvider, utilizing a JwtDecoder and JwtAuthenticationConverter to validate a JWT during authentication.

Now, let’s delve into the workings of JwtAuthenticationProvider within the context of Spring Security. The accompanying figure elucidates the intricacies of the AuthenticationManager, as illustrated in the figures depicting the process of reading the Bearer Token.

Figure 17.3 – JWT Authentication in Spring Security

The JWT authentication in spring-security entails the following steps:

1. The Authentication Filter, as part of the process outlined in reading the Bearer Token, transfers a BearerTokenAuthenticationToken to...