Question: Bit vector: 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1

Bit vector: 00011000000000010010001101010010
The block cipher E is defined as E = E(1)k E(2)(m), with
m =(m1m2 m6)
E(1)k (m)= m k
E(2)(m)=(m4m6m5m2m1m3)
Use E in Output Feedback Mode to encrypt the plaintext bit vector above with four bits of ciphertext transmitted on each round, key k =010011, and the initialisation vector IV =001011.

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