NIST SP 800-63

Also known as: SP 800-63, NIST 800-63, Digital Identity Guidelines, 800-63B, AAL

NIST SP 800-63 Digital Identity Guidelines — NIST (National Institute of Standards and Technology)

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Identity proofing, authentication and federation requirements expressed as assurance levels, used well beyond the US government as the common vocabulary for how strong an identity check has to be.

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Watched by 1 official source. Watching since 19 September 2026.