Question 3 CLO2 (30 pts.) Using Vigenere cipher, and the key stream: 6 16 3 2 11 5 7 17 21 011 1 14 8 7 13 9 4 10 12 15 19 18 24 25 23 22 20, a. Encrypt the plaintext: our battle will start at midnight. Indicate your solution steps. b. Suppose that the same ciphertext produced in part a. was returned to the source using Vigenere cipher but with a different key. Find that key so that the ciphertext decrypts to the plaintext: will support two miles from shore. Indicate your solution steps