olemus
prTS 419221:
elektrooniliste tehingute usaldusväärsust suurendavate elektrooniliste teenuste andja
= provider of electronic services which enhances trust and confidence in electronic transactions

ISO 21188:
lepingupoolte määratud tunnustatav organisatsioon, mis annab klientidele (tellijaile, sõltlastele) usaldusteenuseid rea sertifitseerimiskeskuste kaudu ja võib anda ka sertifikaadi valideerimise teenuseid
= approved organization (as determined by the contractual participants) providing trust services, through a number of certification authorities, to their customers who may act as subscribers or relying parties
Note. A trust services provider can also provide certificate validation services.

ülevaateid
https://en.wikipedia.org/wiki/Trust_service_provider
https://www.ccadb.org/documents/TSP_Technical_Best_Practices_eIDAS.pdf
https://helpx.adobe.com/uk/document-cloud/kb/european-union-trust-lists.html
https://www.riigiteataja.ee/en/eli/ee/511012019010/consolide/current

vt ka
- mandaator
- sertifitseerimisteenuse tarnija