The GCM mode makes use of two functions: __________,which is a keyed hash function,and GCTR.
A)CTR
B)HMAC
C)GHASH
D)CCM

Question

Quizplus · Accepted Answer

The GCM mode uses GHASH, which is a Galois field multiplication-based message authentication code, to generate a message authentication code (MAC). The GCM mode also uses GCTR to encrypt the plaintext. HMAC and CCM are also common encryption modes, but they are not used in GCM.

The GCM Mode Makes Use of Two Functions: __________,Which Is