Question: Let K = 1 1 1 dots 1 1 1 be the DES key consisting of all ones. Does E K ( P ) =

Let K=111dots111 be the DES key consisting of all ones. Does EK(P)=C, then EK(C)=P, so encryption twice
with this key returns the plaintext? Explain and find another key with the same property as K.
Let K = 1 1 1 dots 1 1 1 be the DES key

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