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access control function

nounid 163593·updated Sep 1, 2026
verified

A capability or software mechanism, within a system or application, whose specific role is to evaluate a subject's credentials or authorizations and enforce a policy decision — granting or denying the requested access to a resource, service, or operation. It is the operative unit that translates an access-control policy into a runtime enforcement action, distinct from the broader policy, model, or administrative process that surrounds it. In standards and legal instruments — including ITU-T security definitions and computer-crime law — the term names this enforcement function as a discrete, identifiable component: the part of a system that checks an identity code and removes or maintains restrictions on a protected use.

MWE

Source

document
NIST SP 800-171 Rev 3 - Protecting CUI in Nonfederal Systems
found in
proposed during MWE review
element
e0188
proposed by
dorianc@moxywolf.com
discovery
ManualCuration
access controlthe sentence this term was read in
Where the definition came fromawaiting curator confirmation

generalized from a web lookup of the quoted expression at proposal time Verdict: compositional.

A definition generalized from search results is a draft to react to, not provenance. Confirm it against an authority document before this term is verified.

A web lookup ran when this term was proposed

A procedural or technical capability — whether a software routine, an administrative role, or a system component — that implements and enforces an access control policy by evaluating requests from subjects against authorization rules and producing a permit or deny outcome. A security administration function specifies the authorization database that acts as an input to the access control function, meaning the phrase denotes the enforcement side of the access control pipeline, distinct from the policy-definition and audit sides. Authority documents such as NIST SP 800-53 use it in separation-of-duties contexts — for example, requiring that personnel who administer access control functions do not also administer audit functions — confirming that it names an identifiable, separable operational or technical role rather than the whole discipline of access control.

Advisory only. A term this product ships is defined by an authority document, not by a search result.

Proposed during multiword review of this document in the CKI mapping queue.

Attested in

NIST SP 800-171 Rev 3 - Protecting CUI in Nonfederal Systems2 citations · 2 confirmed by a reviewer · observed 2026-10-20 under anchor/0.9/36554/2026-10-20/set-r11, anchor/0.9/36451/2026-09-01
03.01.04.b ¶ 103.01.04.b ¶ 1

Classifications

Entity Type

Control92%rule-basedr:entity.control.safeguard.v1

Sensitivity

unclassified

Information Class

unclassified

Variants

plural
access control functions
possessive
access control function's
pluralpossessive
access control functions'

Framework definitions

NIST SP 800-171r31 senseview framework →
§1 · attested_usage_reviewer_confirmed
No definition is given in NIST SP 800-171r3. The term is attested in use at 1 citation in that document; a definition is pending curation.
Increment 2: attested in 800-171r3 without a glossary definition.
Legacy lexicon import1 senseview framework →
§1 · web_lookup_draft
A capability or software mechanism, within a system or application, whose specific role is to evaluate a subject's credentials or authorizations and enforce a policy decision — granting or denying the requested access to a resource, service, or operation. It is the operative unit that translates an access-control policy into a runtime enforcement action, distinct from the broader policy, model, or administrative process that surrounds it. In standards and legal instruments — including ITU-T security definitions and computer-crime law — the term names this enforcement function as a discrete, identifiable component: the part of a system that checks an identity code and removes or maintains restrictions on a protected use.
DR-088 backfill from the noun definition column
Web lookup drafts1 senseview framework →
§1 · web_lookup_draft
A procedural or technical capability — whether a software routine, an administrative role, or a system component — that implements and enforces an access control policy by evaluating requests from subjects against authorization rules and producing a permit or deny outcome. A security administration function specifies the authorization database that acts as an input to the access control function, meaning the phrase denotes the enforcement side of the access control pipeline, distinct from the policy-definition and audit sides. Authority documents such as NIST SP 800-53 use it in separation-of-duties contexts — for example, requiring that personnel who administer access control functions do not also administer audit functions — confirming that it names an identifiable, separable operational or technical role rather than the whole discipline of access control.
Drafted by the propose-term web lookup (PD-018); a curator confirms or replaces it.

Outgoing relationships

No outgoing triples
This term is not the subject of any RDF-style relationship yet.

Incoming relationships

No incoming triples
No other term currently asserts a relationship to this one.