The goal of this quiz is to test your Hill Cryptanalysis program. You will demonstrate the program run in class on Friday. If your program is not working, you can solve the questions by hand and receive a full credit.

Problem 1(25 points)

The following plaintext ENCRYPTION was encrypted by Hill Cipher with 2X2 key matrix and the correspondent ciphertext is ULITCLNYST. Find a key matrix. EXPLAIN IN DETAIL EACH STEP!

Problem 2(25 points)

Solve question 14 on page 56

Problem 3(25 points)

Solve question 15 page 57

Problem 4 (25 points): The following plaintext MONDAY was encrypted by Hill Cipher with 2X2 key matrix and the correspondent ciphertext is SELUKE. Find a key matrix. EXPLAIN IN DETAIL EACH STEP!

Bonus (10 points)

Solve question 16 page 57

Bonus (10 points) Ciphertext VFCKOLQOBPTEJENAFJCHBEXS
Part of plaintext lessplastic
Find Matirx Key and decrypt the message