Authoritative Source

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Definitions:

An entity that has access to or verified copies of accurate information from an issuing source such that a CSP has high confidence that the source can confirm the validity of the identity attributes or evidence supplied by an applicant during identity proofing. An issuing source may also be an authoritative source. Often, authoritative sources are determined by a policy decision of the agency or CSP before they can be used in the identity proofing validation phase.
Sources:
NIST SP 800-63-4 [

] under authoritative source
NIST SP 800-63A-4 [

] under authoritative source

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