I only need help with the second part, as I have figured out the first portion already.

1) Consider a very basic model of Feistel Cipher (Fig.1) with two rounds. The function for round i is fi(x,K) = (2* i *K)* mod 15, for i=1,2 and K=7. The ciphertext is 00111111. What is the plaintext? Find Lo, Ro, F1, L1, R1, F2, L2, Rz and write in the box. (40 points) R F1- L- [14A1471 R F= LE RE Fig.1 2) Write a simple program in Java or Python to implement the above approach for encryption and decryption. (40 points)