Using HTTP Basic authentication is a common mechanism to check user’s authenticity, when creating REST-enabled API’s to prevent applications and it’s functionalities from unathorized access. Service Bus 12c (SB) supports this authentication method by using a OWSM security policy. The corresponding authentication information are transported in the HTTP header. In some cases, for example when only user-relevant data should be determined when querying information from Enterprise Information Systems (EIS), the information about the current user that are available  in…