Question

Which of the following are possible sizes of MACs?

i) 12 Bytes

ii) 16 Bytes

iii) 20 Bytes

iv) 24 Bytes

(a) i and iii

(b) ii only

(c) ii and iii

(d) ii iii and iv

I got this question in homework.

The query is from Secure Socket Layer topic in chapter Internet Protocol, Network Addressing and Transport Level Security of Cryptograph & Network Security

Answer 1

Right answer is (c) ii and iii

For explanation I would say: MACs can be 0, 16 or 20 Bytes.