Help please I have most of the code I just need help with the commented portions of this.

import java.util.Random; public class ProgAssignment1Demo {

private static String msg; private static String msgE; private static String msgD; private static int key;

public static void main(String[] args){ //TODO: You can only call methods in main method key = generateKey(); msg = generateMsg(); msgE = encryption(key,msg); bruteForce(msgE); }

private static int generateKey() { //TODO: implement step a (randomly generate 16-bit key) return 0; }

private static String generateMsg() { //TODO: implement step b (randonly generate a string with an even number of characters) return ""; }

private static String encryption(int key, String msg) { //TODO: implement step c (encrypt the message) return ""; }

private static void decryption(int key, String msgE) { //TODO: implement step d (decryption) }

private static void bruteForce(String msgE) { //TODO: implement bruteForce algorithm, you may need the above decryption(key,msgE) method }

}

Adobe Acrobat Reader DC Home Tools Sign In Implement a toy symmetric cryptosystem based on the following method. a. Keys are 16-bit randomly generated values. b. Messages are randomly generated strings with an even number of characters. (Valid characters are upper and lower case letters, as well as spaces.) One can always add a blank at the end of an odd-length string. C. Ex(M)-M9(K 11 K 11 K ). where the key K is repeated n/2 times. d. The decryption algorithm for a ciphertext C is the same as the encryption algorithm: Implement a brute-force decryption attack for this cryptosystem and test it on randomly generated English text messages. Automate the process of detecting whether a decrypted message is English text. Graduate students task and bonus task for undergraduate After got the correct key, your program should print out the number of attempted keys and the cost of time to break the key