There are several different types of attacks that can take place on a cryptosystem. Which of the following best describes a differential cryptanalysis?

A.
Differences in the plaintext and resulting ciphertexts are mapped to probable key values

B.
It is a type of known plaintext attack

C.
The mathematical structure of the formulas provide enough patterns to uncover the encryption key

D.
It is a type of ciphertext only attack

Explanation:
The attacker takes two messages of plaintext and follows the changes
that take place to the blocks as they go through the different S-boxes. (Each
message is being encrypted with the same key.) The differences that are identified
in the resulting ciphertext values are used to map probability values to different
possible key values. The attacker continues this process with several more sets of
messages and reviews the common key probability values. One key will continue to
show itself as the most probable key that was used in the encryption process of
these different messages. Since the attacker chooses the different plaintext
messages for this attack, it is considered to be a chosen-plaintext attack.