Two MACs that are based on the use of a block cipher mode of operation are Data Authentication Algorithm and __________ .
A)GMAC
B)DMAC
C)TMAC
D)CMAC

Question

Quizplus · Accepted Answer

The only MAC mentioned that uses a block cipher mode of operation is CMAC. GMAC is a MAC based on Galois/Counter Mode (GCM), which is a mode of operation for authenticated encryption, not just MAC. DMAC and TMAC are not commonly used MACs and do not use block cipher modes of operation.

Two MACs That Are Based on the Use of a Block