Defined term
Message Authentication Code (MAC)
Message Authentication Code (MAC): A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the…
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Cybersecurity
Definition
A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data. See checksum.
Alternative Definitions
- Definition 2
A cryptographic checksum that results from passing data through a message authentication algorithm. SOURCE: FIPS 198 1. See Checksum. 2. A specific ANSI standard for a checksum. (CNSSI-4009) (NISTIR)
Sources
1
Committee on National Security Systems Glossary CNSSI 4009-2015
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The Cyber Glossary
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