Which one of the following is a hybrid system employing asymmetric and symmetric encryption services?

A.
3DES

B.
PKI

C.
RSA

D.
Diffie-Hellman

Explanation:
PKI in general uses an asymmetric process initially to encrypt a
session key for an exchange process then uses symmetric encryption employing the use
of the newly created session key. Thus: key exchange using asymmetric – and
performance of symmetric encryption for the actual data transference.