Hello Martin,
This collaboration space is for content and questions related to the SAP Single Sign-On product. If an SAP Customer is not using the SAP Single Sign-On product, the encryption with our SAP library is only possible based on Kerberos technology. When a customer is using SAP Single Sign-On product they can choose between Kerberos and X.509 client certificates.
For all questions about 3rd party libraries, Please, get in contact with your library vendor.
Regards,
Donka Dimitrova