DV-MFA Table (MFA Building Blocks)

Activity	Subactivity	Subsubactivity	mandatory/optional?	Input	Output	(Security) risks if omitted	Dependencies	Increases/Decreases LoA
1) 2FA token request	1.0) Should we have a first factor authentication subactivity here as a gatekeeper for "User provides user info" 1.1) User provides user info		mandatory	user information (e.g. name, email, organization, e.g. via SAML assertion)	token request	First check to be entitled to register 2FA token (e.g. federated login, email address is present which is associated with user/org. LDAP)	Eligibility either needs to be checked in 1.1 or 3.1	N/A
2) 2FA (pre-)registration	2.1) User selects 2FA token		optional
	2.2) User performs authentication with that token for binding and to prove possession		optional
3) Identification (eligibility check;identity vetting using ID doc or alternative identity assertion method;unsure match of the person and her digital identity)	3.0) Identification session arrangement and scheduling (!optional)
	3.1) Eligibility check of user		optional if already performed in 1.1
	3.2) Proof First factor posession		optional if already performed in 1.1
	3.3) Vet identity of user
		3.3.1) Compare claimed/transmitted/spoken information with user's identity proof (e.g. ID doc, activation code)	mandatory
		3.3.2) Perform Liveness Check (e.g. ID doc photo vs. real life face/ selfie)
		3.3.3) Check user's identity proof with its original source for validity	optional					↓
		3.3.4) Record identity proof
4) Token binding	4.1) User chooses own token or handover of token to user		optional when activity 2 took place
	4.2) Bind token to digital ID		mandatory, may already be performed in step 2 precondition: successful 3.2.1)
	4.3) Token-proof of-possession (e.g. test authentication)		optional
	4.4) Token activation & record		mandatory precondition: successful 3.2.1
	4.5) Inform user about token activation

	2FA token request	2FA token (pre-)registration		Identification				Token binding
	1.1) User provides user info	2.1) User selects 2FA token	2.2) User performs authentication with that token to prove possession	3.1) Eligibility check of user	3.2) Vet identity of user			4.1) User chooses own token or handover of token to user	4.2) Bind token to digital ID	4.3) Token-proof-of-possession	4.4) Token activation & record	4.5)Inform user
					3.2.1) Compare claimed/transmitted/spoken information with user's identity proof	3.2.2) Check user's identity proof with its original source for validity	3.2.3) Record identity proof
Method
Live video	federated login			(checked in 1.1 via login)
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DV-MFA Table (MFA Building Blocks)