Which of the following is an encryption method that uses a different keys to decrypt and encrypt
messages?

A.
Symmetric encryption

B.
Shared key encryption

C.
Asymmetric encryption

Explanation:

: As stated in the official CCSE Courseware, “Asymmetric Encryption is also called public/private
key encryption, because the encryption scheme uses 2 keys, one private and one public. This
keys are created using the Diffie Hellman key scheme, where one firewalls public key, and another
firewalls private key, creates a shared secret key. See Page 7.5 of CCSE NG Official
Courseware. (VPN1-FW1 Management II NG FP-1) .