Packages 
Package Description
org.springframework.security.oauth2.core
Core classes and interfaces providing support for the OAuth 2.0 Authorization Framework.
org.springframework.security.oauth2.core.converter  
org.springframework.security.oauth2.core.endpoint
Support classes that model the OAuth 2.0 Request and Response messages from the Authorization Endpoint and Token Endpoint.
org.springframework.security.oauth2.core.http.converter  
org.springframework.security.oauth2.core.oidc
Core classes and interfaces providing support for OpenID Connect Core 1.0.
org.springframework.security.oauth2.core.oidc.endpoint
Support classes that model the OpenID Connect Core 1.0 Request and Response messages from the Authorization Endpoint and Token Endpoint.
org.springframework.security.oauth2.core.oidc.user
Provides a model for an OpenID Connect Core 1.0 representation of a user Principal.
org.springframework.security.oauth2.core.user
Provides a model for an OAuth 2.0 representation of a user Principal.
org.springframework.security.oauth2.core.web.reactive.function