Which of the following attacks analyzes large amounts of plaintext/ciphertext pairs created with the same key?

A.
Known plaintext attack

B.
Differential cryptanalysis

C.
Linear cryptanalysis

D.
Chosen plaintext attack

Explanation:
Answer C is correct; linear cryptanalysis analyzes large amounts of plaintext/ciphertext pairs created with the same key, trying to deduce information about the key.

Incorrect Answers and Explanations: A, B, and D: Answers A, B, and D are incorrect. Linear cryptanalysis is a known plaintext attack, but the question references linear specifically, making known plaintext attack incorrect. Differential cryptanalysis seeks to find the difference between related plaintexts that are encrypted. A cryptanalyst chooses the plaintext to be encrypted during a chosen plaintext attack.