I remember I read that a MAC can be considered as a PRF.
Can a variable-length input keyed-PRF be considered as a MAC?
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Sign up to join this communityI remember I read that a MAC can be considered as a PRF.
Can a variable-length input keyed-PRF be considered as a MAC?
Usually. $\:$ A variable-length input keyed-PRF is a [PRF's output length]-bit MAC.
In particular, a variable-length input keyed-PRF with long output is automatically a MAC.