Question: Consider the meet - in - the - middle attack on 2 DES. How many candidate ( K 1 , K 2 ) pairs would

Consider the meet-in-the-middle attack on 2DES. How many candidate (K1, K2) pairs would be expected after testing a single (plaintext, ciphertext) pair?
Out of those, how many pairs would be eliminated with a second (plaintext, ciphertext) pair?

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