Consider the following encryption scheme to provide confidentiality. A and B want to communicate with each other. A and B share a secret two bit number T i.e. T is known only to A and B. A gets a 56-bit DES key K by repeating T 28 times. For example, if T was 01, then K would be 010101 ... Independently, B also gets the 56-bit DES key K in the same way. Now if A wants to send M to B, A will calculate C = E_K (M) and send C to B. B will recover the plaintext by doing M = D_K (C). Is this a good scheme? Give a YES/NO answer. If you said NO explain what you think is the single biggest weakness of the scheme