Question: Your colleague observed that when the all - zeros key is used with One Time Pad scheme, the message is sent in the clear. He

Your colleague observed that when the all-zeros key is used with One Time Pad scheme, the message
is sent in the clear. He decides to remove the all-zeros key from the key space. Have a convincing
argument of why this is not a good idea, without referring to the impossibility result (optimality of
the OTP) we studied. You can use the definition of perfect secrecy.

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