...
| Activity | Subactivity | Subsubactivity | Mapping I (Identity/Identification) F (Factor) → 1F if first factor, 2F if second factor | mandatory Mandatory/optional? (typically) | Input (typically) | Output (typically) | (Security) risks if omitted (general) | Dependencies (could be quite specific) | Increases/Decreases LoA (general) |
|---|---|---|---|---|---|---|---|---|---|
| FRq 1) 2FA token request | 1.0) Should we have a first factor authentication subactivity here as a gatekeeper for "User provides user info" FRq.UI 1.1) User provides user info | F_request (e.g. 2F_request if second factor is requested) | mandatory | user information (e.g. name, email, organization, e.g. via SAML assertion) | token request |
| Eligibility either needs to be checked in 1.1 or 3.1 | N/A | |
| FReg 2) 2FA (pre-)registration | FReg.Sel 2.1) User selects factor | N/A, see F_select | optional | ||||||
FReg.Authc 2.2) User performs authentication with that factor for binding and to prove possession/knowledge/... | N/A, see F_authenticate | optional | |||||||
| Ident 3) Identification (eligibility check;identity vetting using ID doc or alternative identity assertion method;unsure match of the person and her digital identity) | Ident.Sched 3.0) Identification session arrangement and scheduling (!optional) | I_schedule | |||||||
| Ident.ElegC 3.1) Check eligiblity of user & possession of first factor | I_checkEligibility 1F_authenticate | optional if already performed in 1.1 | |||||||
Ident.UVet 3.3) Vet identity of user | |||||||||
| Ident.UVet.CkClm 3.3.1) Compare claimed/transmitted/spoken information with user's identity proof (e.g. ID doc, activation code) | I_vet_???? | mandatory | |||||||
Ident.UVet.ULive 3.3.2) Perform Liveness Check (e.g. ID doc photo vs. real life face/ selfie) | I_vet_liveness | ||||||||
| Ident.UVet.IDVal 3.3.3) Check user's identity proof with its original source for validity | I_vet_originalSource | optional | ↓ | ||||||
| Ident.UVet.Rec 3.3.4) Record identity proof (par of ID doc, or just note success???) | I_record | ||||||||
| FBind 4) Token binding | FBind.Poss 4.1) User chooses own token or handover of token to user (possession) | F_select | optional when activity 2 took place | ||||||
FBind.DigID 4.2) Bind factor to digital ID | F_bind | mandatory, may already be performed in step 2 precondition: successful 3.2.1) | |||||||
| FBind.FPoss 4.3) Token-proof of-possession (e.g. test authentication) | 2F_authenticate | optional | |||||||
| 4FBind.FAct4.4) Factor activation & record | F_activate F_record | mandatory precondition: successful 3.2.1 | |||||||
| FBind.FAck 4.5) Inform user about factor activation | F_confirmActivation |
...