Identity Assurance Level (IAL)

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Abbreviation(s) and Synonym(s):

IAL

FIPS 201-3, NIST SP 1800-12b, NIST SP 1800-13B, NIST SP 1800-17b, NIST SP 800-63-3

Definition(s):

A category that conveys the degree of confidence that a person’s claimed identity is their real identity, as defined in [NIST SP 800-63-3] in terms of three levels: IAL 1 (Some confidence), IAL 2 (High confidence), IAL 3 (Very high confidence).
Source(s):
FIPS 201-3

A category that conveys the degree of confidence that the applicant’s claimed identity is their real identity.
Source(s):
NIST SP 1800-17b under Identity Assurance Level
NIST SP 800-63-3

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

Comments about the glossary's presentation and functionality should be sent to secglossary@nist.gov.

See NISTIR 7298 Rev. 3 for additional details.