Implement encryption and decryption with Modified Simplified DES, as discussed in the textbook. The permutations IP, P10, P8, and SW, and the functions fk, F, and the S-box S0 are all as described in the textbook, and can be hardwired into your program. For parts (a) and (b), you use the original S1 box as described in Stallings 3rd edition. However, for part (c), you have to use a modified S-box S1. In the modified S1, the rows 2 and 3 are the same as described for the original S1, but the rows 0 and 1 have been switched. So row 1 is 0, 1, 2, 3 and row 0 is 2, 0, 1, 3. Your program should: take as input an 8-bit block of plaintext and a 10-bit key. Show the following output (please only print what is being asked for, and nothing else): (a) the intermediate result after the SW operation while encrypting. (b) the ciphertext. (c) the intermediate result after the SW operation while decrypting. (d) the result of the decryption process. You have to run your programs on the following inputs: (a) with the original S1: the example from the textbook i.e. the plaintext is 10111101 and the key is 1010000010. In this case, we know the ciphertext should come out to be 01110101, so this is a good way to check that your program is performing correctly on this input. (b) with the original S1: the plaintext is 11011100 and the key is 0011010111. (c) with the modified S1: the plaintext is 10110101 and the key is 1000110011. Please note that you do not have to actually implement these operations as bit operations. For example, you can store the plaintext as an array of integers.

I want a python program for this question as soon as possible.