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Which of the following best describes the difference between MAC, HMAC, and CBC-MAC?

Which of the following best describes the difference between MAC, HMAC, and CBC-MAC?

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A.
MAC concatenates a message with a symmetric key. CBC-MAC uses the last block of ciphertext. HMAC concatenates a message with a symmetric key and puts the result through a hashing algorithm.

B.
HMAC concatenates a message with a symmetric key. CBC-MAC uses the last block of ciphertext. MAC concatenates a message with a symmetric key and puts the result through a hashing algorithm.

C.
MAC concatenates a message with a symmetric key. CBC-MAC uses the first block of ciphertext. HMAC concatenates a message with a symmetric key and puts the result through a hashing algorithm.

D.
CBC-MAC concatenates a message with a symmetric key. MAC uses the last block of ciphertext. HMAC concatenates a message with a symmetric key and puts the result through a hashing algorithm.

Explanation:
MAC concatenates a message with a symmetric key. CBC-MAC uses the last
block of ciphertext after it has encrypted the whole message. HMAC concatenates a
message with a symmetric key and puts the result through a hashing algorithm.


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