Please anser b

a 5 mod 47 = 38 KA > XA 2 17 5 mod 47 = 3 YAZ 20 Key = 38 mod q7 = 3 8 20 mod 47 = 2 - XA 17 3 mod 97 = 2(Diffie Hellman in action, 5 points) (a) A caesar shift cipher key is exchanged using the Diffie-Hellman method with parameters (p, g) = (47, 3). Eve sees Alice send Bob the number X = 38 and sees Bob send Alice the number Y = 3. Determine the key. (b) Assume that the alphabet is the usual alphabet with space as the 27th character. Suppose Eve sees Alice send Bob the encrypted message "VJKUBKUBURCTVC". Using the key found in (a), decrypt this message