signing Service Url
Base URL for the EidKit document signing service.
When set, ro.eidkit.sdk.CeiSigner will POST the raw chip signature and certificate to this endpoint for CMS/PAdES wrapping, timestamping, and long-term validation (LTV). The response contains a signed PDF-ready CMS blob.
If null (default), ro.eidkit.sdk.model.SignResult returns the raw r||s signature and certificate for the caller to handle (embed into PDF, send to their own backend, etc.).
For on-premise deployments, point this at your own signing service instance. For EidKit-managed signing, use the endpoint provided in your EidKit dashboard.