For an n-bit tag and a k-bit key, the level of effort required for brute force attack on a MAC algorithm is

For an n-bit tag and a k-bit key, the level of effort required for bru

1.	For an n-bit tag and a k-bit key, the level of effort required for brute force attack on a MAC algorithm is
A.	2^k
B.	2^n
C.	min(2^k,2^n)
D.	2^k/2^n
Answer» D. 2^k/2^n