Message Authentication Code (MAC)

March 4, 2018

How Can We Help?

Message Authentication Code (MAC)

You are here:
< Back

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data. MACs provide authenticity and integrity protection, but not nonrepudiation protection.
SOURCE: SP 800-63; FIPS 201

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.
SOURCE: CNSSI-4009