Problem 6. You received two encrypted messages 05/07. For encryption public keys n = 143 and k = 103 were used.

a) Find the private key k 1

b) Decode messages to numbers.

c) Each number is considered to have three digits (if it has two, then the first digit is 0). Each digit represent one letter. Decode those two messages to letters using the following agreement about digits: E = 1, A = 2, D = 3, G = 4, F = 5, C = 6, R = 7, T = 8, = 9, blank = 0