k is key, m is a plaintext message and h is a collision resistant hash function. The function f$($k$,$m$)$:

Question $22$ options:

f$($k$,$ m$)$ can act as public key method

f$($k$,$ m$)$ can act as a digital signature method

f$($k$,$ m$)$ can act as cryptanalysis method.

f$($k$,$m$)$ can act as a keyed hash function that can hash a body text based on a cryptographic pre$-$shared key