Spring Security OAuth - Dynamic Client Registration

Relevant information:

1. sso-authorization-server is a Keycloak Authorization Server wrapped as a Spring Boot application
2. There are two OIDC-Connect Clients registered in the Authorization Server: First -
   1. Client Id: ssoClient-1
   2. Client secret: ssoClientSecret-1
   3. Redirect Uri: http://localhost:8082/ui-one/login/oauth2/code/custom And second -
   4. Client Id: ssoClient-2
   5. Client secret: ssoClientSecret-2
   6. Redirect Uri: http://localhost:8084/ui-two/login/oauth2/code/custom
3. sso-resource-server is a Spring Boot based RESTFul API, acting as a backend Application
4. sso-client-app-1 and sso-client-app-2 are two identical Spring MVC Thymeleaf App acting our front end. They are available at http://localhost:8082/ui-one/ and http://localhost:8084/ui-two/ respectively.
5. There are two users registered in the Authorization Server:
   1. [email protected] / 123
   2. [email protected] / pass
6. The module uses the new OAuth stack with Java 13.

Relevant Articles:

• Simple Single Sign-On with Spring Security OAuth2