A trust service provider (TSP) is a legal entity providing and preserving digital certificates to create and validate electronic signatures and to authenticate their signatories. The trust service provider has the responsibility to assure the integrity of electronic identification for signatories.

A TSP signature can be defined through the REST API and the user interface for every recipient. Depending on the TSP provider a TSP signature can be configured for documents or for signature fields.

• Advanced recipient settings page of the signing package wizard.

  TSP Provider supports TSP signature for documents:

  

  TSP provider supports TSP signature for signature fields:

  
  The available signature types and attributes of a TSP signature are related to the corresponding TSP signature provider used in the system.

  If no TSP provider is selected, no TSP signature is required for the recipient.

  
• Signing packages page:

  The TSP icon is visible if at least one signer has to sign at least one document or signature field (having TSP as only signing mode) with a TSP signature.

  
• Signing package details view:

  In case a TSP signature is required, its type is shown in the Recipients section.

  

  The Documents section indicates that the document must be signed with a TSP signature.