domain security policy
163537·updated Aug 30, 2026A governing instrument — specifically a sub-component of a Key Management Policy — that defines the protection requirements, rules, and restrictions applicable to all cryptographic keys, metadata, and sensitive data within a bounded security domain. It "provides the rules and restrictions that allow computers [and] networks" within a domain to operate under a common protective posture. Its defining function is to enable or constrain cross-domain transfers: before any entity may send cryptographic keys or metadata to a receiver, both the sending and receiving entities must have assurance that each other's domain security policy provides at least equivalent protection. In practice, NIST uses it to specify whether a domain provides a high or low level of protection to the keys and/or metadata it processes, making the term operative primarily in cryptographic key management governance and cross-domain interoperability assessments per NIST SP 800-57.
Source
introduces the risk that such transfers violate one or more domainthe sentence this term was read in
generalized from a web lookup of the quoted expression at proposal time Verdict: term of art.
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A governing instrument — part of a broader Key Management Policy — that provides rules and restrictions controlling how computers and entities within a security domain may handle cryptographic material, access resources, and exchange information with parties inside and outside the domain. It is rooted in the concept of a security domain: an environment or context encompassing a set of system resources and the entities authorized to access them under a common security policy, or equivalently, a set of assets and resources subject to a common security policy. In practice it is used as the benchmark for cross-domain operations: a sending entity must be assured that the receiving domain's protections meet the standard of its own policy, and the receiving entity must equally verify the sender's policy before accepting sensitive material. Once two domains are found equivalent — by an authority or automated mechanism — their members can exchange sensitive data with assurance that it is protected to the required level.
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
Classifications
Entity Type
Sensitivity
Information Class
Variants
- plural
- domain security policies
- possessive
- domain security policy's
- pluralpossessive
- domain security policies'
Framework definitions
- §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.
- §1 · web_lookup_draft
- A governing instrument — specifically a sub-component of a Key Management Policy — that defines the protection requirements, rules, and restrictions applicable to all cryptographic keys, metadata, and sensitive data within a bounded security domain. It "provides the rules and restrictions that allow computers [and] networks" within a domain to operate under a common protective posture. Its defining function is to enable or constrain cross-domain transfers: before any entity may send cryptographic keys or metadata to a receiver, both the sending and receiving entities must have assurance that each other's domain security policy provides at least equivalent protection. In practice, NIST uses it to specify whether a domain provides a high or low level of protection to the keys and/or metadata it processes, making the term operative primarily in cryptographic key management governance and cross-domain interoperability assessments per NIST SP 800-57.DR-088 backfill from the noun definition column