| Name | Description | Type | Package | Framework |
| DelegationCallback | This Callback class provides a pluggable way of performing delegation. | Class | org.apache.cxf.ws.security.trust.delegation | Apache CXF |
| ReceivedTokenCallbackHandler | This CallbackHandler implementation obtains the previously received message from a DelegationCallback object, and obtains a received token | Class | org.apache.cxf.ws.security.trust.delegation | Apache CXF |
| WSSUsernameCallbackHandler | This CallbackHandler implementation obtains a username via the jaxws property security. | Class | org.apache.cxf.ws.security.trust.delegation | Apache CXF |