Question: 1. Consider the LFSR with so = 1, 8 = 1, S2 = 1, 83 = 1, 84 = 0, and Sn Sn-2 Sn-3+

1. Consider the LFSR with so = 1, 8 = 1, S2

1. Consider the LFSR with so = 1, 8 = 1, S2 = 1, 83 = 1, 84 = 0, and Sn Sn-2 Sn-3+ Sn-5. Find the next 15 terms in this LFSR. What is the period of this LFSR? 2. Suppose you learn that a Hill cipher with block size 2 encrypts the plaintext TEST to the ciphertext UNVW. Use this information to find the key.

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