We conduct a known-plaintext attack on an LFSR-based stream cipher. We know that the plaintext sent was: 1011 0110 1110 1001 1000 1010 1110 By tapping the channel we observe the following stream: 1001 1000 1011 0101 0011 0011 1001 1. What is the degree m of the key stream generator? 2. What is the initialization vector? (in the order z0 z1 z2) 3. Determine the feedback coefficients of the LFSR. (in the order c0 c1 c2) 4. Draw a circuit diagram and verify the output sequence of the LFSR. If it starts with the initialization vector what would be its contents after 5 clock signals? (in the order z0 z1 z2)

Similar to Problem 2.10 in the textbook: We conduct a known-plaintext attack on an LFSR-based stream cipher. We know that the plaintext Sent was: 1011011011101001100010101110 By tapping the channel we observe the following stream: 1001100010110101001100111001 1. What is the degree m of the key stream generator? 2. What is the initialization vector? (in the order z0z1z2 ) 3. Determine the feedback coefficients of the LFSR. (in the order c0c1c2 ) 4. Draw a circuit diagram and verify the output sequence of the LFSR. If it starts with the initialization vector what would be its contents after 5 clock signals? (in the order z0z1z2 )