Which of the following protocols is designed to send individual messages securely?

A.
Kerberos

B.
Secure Electronic Transaction (SET).

C.
Secure Sockets Layer (SSL).

D.
Secure HTTP (S-HTTP).

Explanation:
S-HTTP provides protection for each message sent between two computers, but not the actual link.
Incorrect Answers:
A: Kerberos is a network authentication protocol. It is not used to secure messages.
B: SET is designed to provide secure credit card transactions, not to provide secure transfer of messages.
C: HTTPS protects the communication channel, not each individual message separately. HTTPS is HTTP that
uses SSL for security purposes.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 873