Primary definition
A message authentication code that uses a cryptographic key in conjunction with a hash function. Source: FIPS PUB 201-1
Also known asHMAC · keyed-hash message authentication code · hash-based MAC
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
A message authentication code that uses a cryptographic key in conjunction with a hash function. Source: FIPS PUB 201-1
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Hash Based Message Authentication Code (HMAC). In Election Security Glossary. Retrieved September 3, 2026, from https://electionsecurityglossary.com/glossary/hash-based-message-authentication-code-hmac
Sources
2 cited · last checked Aug 9, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
High consensus
02
The Cyber Glossary
The Cyber Glossary
Multi-source
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