Question: Which statement is NOT True about one - time - pad cipher? Each key should be used one time and be random to make sure

Which statement is NOT True about one-time-pad cipher?
Each key should be used one time and be random to make sure the cipher is secure.
The encryption method is a binary operation.
The encryption key is the same as the decryption key.
The cipher is a block cipher.
Which statement is NOT True about one-time-pad cipher? Each key should

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