Defined term

Hash-based Message Authentication Code (hmac)

Hash-based Message Authentication Code (hmac): A message authentication code that uses a cryptographic key in conjunction with a hash function.

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Cybersecurity
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Definition

A message authentication code that uses a cryptographic key in conjunction with a hash function.

Alternative Definitions

Definition 2

Hash-based Message Authentication Code – (HMAC) A message authentication code that uses a cryptographic key in conjunction with a hash function. (FIPS 201; CNSSI-4009) (NISTIR)

Source: The Cyber GlossaryType: external

Sources

1
Committee on National Security Systems Glossary CNSSI 4009-2015
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2
The Cyber Glossary
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