Câu 36: 312-50V11: Certified Ethical Hacker v11 Exam

What is the known plaintext attack used against DES which gives the result that encrypting plaintext with one DES key followed by encrypting it with a secondDES key is no more secure than using a single key?

1. A. Man-in-the-middle attack
2. B. Meet-in-the-middle attack — đáp án hiện tại
3. C. Replay attack
4. D. Traffic analysis attack