Which of the following implements the required secure key negotiation?

A security administrator must implement a system to allow clients to securely negotiate encryption
keys with the company’s server over a public unencrypted communication channel.
Which of the following implements the required secure key negotiation? (Select TWO).

A.
PBKDF2

B.
Symmetric encryption

C.
Steganography

D.
ECDHE

E.
Diffie-Hellman