What does "hmac" mean?

Initialism of hash-based message authentication code, a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key.

Hmac

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Initialism of hash-based message authentication code, a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key. abbreviation, alt-of, initialism

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.