Jane, a VPN administrator, was asked to implement an encryption cipher with a MINIMUM
effective security of 128-bits. Which of the following should Jane select for the tunnel encryption?
A.
Blowfish
B.
DES
C.
SHA256
D.
HMAC
Explanation:
Blowfish is an encryption system that performs a 64-bit block cipher at very fast speeds. It is a
symmetric block cipher that can use variable-length keys (from 32 bits to 448 bits). Among the
alternatives listed above, it is the only cipher that can use a 128-bit key and which does provide
additional security through a symmetric key.