Quiz Entry - updated: 2026.10.22
Which four sub-models make up the eCH-0170 quality model, and what does each one rate?
Authentication (VSA: strength and certification of the authenticator), registration (VSR: identification and handover of the authenticator), governance (VSS: supervision, liability, maturity) and federation (VSF: how the authentication confirmation is passed on).
* Four sub-models, each rated on its own criteria, together decide the overall trust level. *
| Sub-model | German abbreviation | Rated on |
|---|---|---|
| Authentication | VSA, Vertrauensstufen der Authentifizierung | Strength of the authenticator, its possible certification, re-authentication interval |
| Registration | VSR, Vertrauensstufen der Registrierung | How well the person was identified, how the authenticator was handed over, how it is renewed or replaced |
| Governance | VSS, Vertrauensstufen der Steuerung | Supervision, liability and maturity of the service provider |
| Federation | VSF, Vertrauensstufen der Föderierung | Authenticity, confidentiality protection, transmission form and proof of possession of the authentication confirmation |
The split mirrors the life of an identity: you are registered once, you authenticate many times, a provider governs the whole operation, and in a federation the result is forwarded to other services. Each phase can be strong or weak independently, so each gets its own scale.
Go deeper:
eCH-0170 V2.0.1 — the official summary of the four sub-models (in German).