Secure Sockets Layer (SSL) uses a Message Authentication Code (MAC) for what purpose?

The correct answer is D. message integrity. A Message Authentication Code (MAC) is used in SSL/TLS to ensure message integrity - it verifies that data has not been altered or tampered with during transmission. The MAC is computed from the message content and a shared secret key, so the receiver can detect any…

Submitted by fernanda_arg· Apr 18, 2026Cryptography

Question

Options

Amessage non-repudiation.
Bmessage confidentiality.
Cmessage interleave checking.
Dmessage integrity.

How the community answered

(34 responses)

A
3% (1)
B
9% (3)
D
88% (30)

Explanation

A Message Authentication Code (MAC) is used in SSL/TLS to ensure message integrity - it verifies that data has not been altered or tampered with during transmission. The MAC is computed from the message content and a shared secret key, so the receiver can detect any modification. It does not provide confidentiality (that's encryption), non-repudiation (that requires digital signatures with asymmetric keys), or interleave checking.

Topics

#SSL/TLS#Message Authentication Code (MAC)#Message Integrity#Cryptography

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