+2.2.1 Permitted Authenticator Types

2.2.1 Permitted Authenticator Types

At AAL2, authentication SHALL use either a multi-factor authenticator or a combination of two separate authentication factors. A multi-factor authenticator requires two factors to execute a single authentication event, such as a cryptographically secure device with an integrated biometric sensor that is required to activate the device. Authenticator requirements are specified in Sec. 3.

When a multi-factor authenticator is used, any of the following MAY be used:

Multi-factor out-of-band authenticator (Sec. 3.1.3.4)
Multi-factor OTP (Sec. 3.1.5)
Multi-factor cryptographic authentication (Sec. 3.1.7)

When a combination of two single-factor authenticators is used, the combination SHALL include one physical authenticator (i.e., “something you have”) from the following list in conjunction with either a password (Sec. 3.1.1) or a biometric comparison:

Look-up secret (Sec. 3.1.2)
Out-of-band device (Sec. 3.1.3)
Single-factor OTP (Sec. 3.1.4)
Single-factor cryptographic authentication (Sec. 3.1.6)

A biometric characteristic is not recognized as an authenticator by itself. Section 3.2.3 requires a physical authenticator to be authenticated along with a biometric comparison. The physical authenticator then serves as “something you have,” while the biometric match serves as “something you are.” When a biometric comparison is used as an activation factor for a multi-factor authenticator, the authenticator itself serves as the physical authenticator. As noted in that section, local verification of biometric factors (i.e., the use of a multi-factor authenticator with a biometric comparison as an activation factor) is preferred over central biometric factor comparison.

1. Übersicht

Bezeichnung Standard

1.1 Referenzen

1.2 Identifizierte Anforderungen

1.3 Zugehörige Regulierungen

2. Identifizierte Anforderungen

Anforderungen
Quelle Anforderung

3. Zugehörige Regulierungen

Regulierungen
Quelle Regulierung
  • NIST -

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