The Secure Sockets Layer (SSL) protocol addresses the confidentiality of a message through:

A. symmetric encryption.

B. message authentication code.

C. hash function.

D. digital signature certificates.

Explanation:

SSL uses a symmetric key for message encryption. A message authentication code is used for ensuring data integrity. Hash function is used for generating a message digest; it does not use public key encryption for message encryption. Digital signature certificates are used by SSL for server authentication.