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3.2.1 Physical Authenticators

NIST PIV and digital identity SP 800-63B-4 against SP 800-63B
All changes in this version
added 3 Authenticator and Verifier Requirements part of 3.2

Title changed

Before · SP 800-63B

After · SP 800-63B-4

Physical Authenticators

Control changed

Before · SP 800-63B

After · SP 800-63B-4

CSPs SHALL provide subscriber instructions for appropriately protecting the authenticator against theft or loss. The CSP SHALL provide a mechanism to invalidate 1 the authenticator immediately upon notification from a subscriber that the authenticator’s loss, theft, or compromise is suspected.

Possession and control of a physical authenticator are based on proof of possession of a secret associated with the authenticator. When an embedded secret (typically a certificate and associated private key) is in the endpoint, its “device identity” can be considered a physical authenticator. However, this requires a secure authentication protocol that is appropriate for the AAL being authenticated. Browser cookies do not satisfy this requirement except as short-term secrets for session maintenance (not authentication), as described in Sec. 5.1.1 .