a. By using the Vigenere Tableau, encrypt the message "honesty is the best policy" in 5-letter words and network" as the repeating key. Use 'x' to pad out the blanks. Show your working. (5 Marks) b. By using C = E(pi) = pi +3. decrypt the Caesar-encrypted message below by show your working. PHHW PH DIWHU WKH SDUWB (5 Marks) c. The classic Caesar cipher is simply having a rotation size of -3 for each character in the alphabet. Decrypt the Table 1 message using Caesar cipher approach and plot each of the character on the empty place appropriately. KLG GHO Table 1: Character in Alphabet using Caesar Cipher (3 marks) d. A message was encrypted with basic rotation cipher and the probability distribution throughout the frequency analysis are as follows: A B D E F HI J K L M 0.01 0.02 0.03 0.02 0.06 0.07 0.02 0.01 0.05 0.07 0.08 0.02 0.01 N o P Q R S U V W X Y Z 0.02 0.01 0.03 0.01 0.07 0.02 0.03 0.04 0.13 0.03 0.02 0.07 0.09 Table 2: Encrypted Message using Basic Cipher Method Based on the Table 2 values, assume that you may need to decrypt character E first. Thus, which alphabet is most suitable to be used as the first decode character? Why, give your justification? (2 marks) e. Based on your answer in (d), decrypt the following information: T FEW Z UVEK ZRC Table 3: Character in Alphabet using Basic Cipher