Hash-based Message Authentication Code
nounverified· unreviewed·updated Aug 30, 2026
A message authentication code that uses a cryptographic key in conjunction with a hash function.
polysemousMWENISTIR 7298: Glossary of Key Information Security Terms, Revision 2
Senses
NISTIR 7298: Glossary of Key Information Security Terms, Revision 2sense 2 pending review
A message authentication code that utilizes a keyed hash.
Classifications
Entity Type
Control0%rule-basedmulti_axis_classifier_low_confidence.v1
?unassignedlast reviewed —
Sensitivity
Regulated85%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Information Class
unclassified
Variants
- acronym
- HMAC
- plural
- Hash-based Message Authentication Codes
- possessive
- Hash-based Message Authentication Code's
- pluralpossessive
- Hash-based Message Authentication Codes'