Message authentication code (MAC)
Message authentication code (MAC)
A family of secret-key cryptographic algorithms acting on input data of arbitrary length to produce an output value of a specified length (called the MAC of the input data). The MAC can be employed to provide an authentication of the origin of data and/or data-integrity protection. In this Recommendation, approved MAC algorithms are used to determine families of pseudorandom functions (indexed by the choice of key) that are employed during key derivation.
Source: NIST SP 800-108r1 | Category: