1. public class Main {
2.  
3.     private static String mainKey;
4.     private static String mainCipher;
5.  
6.     public static void main(String[] args) {
7.         mainKey = convertToBinary("YAMEO");
8.         mainCipher = convertToBinary("5f67fc6c0b8e73c39188cea354bb31eb85008ae1b6c51c16a4dfd8c0509fb960a8241f6d9a8e700450d5553acabe01d3e03b4cbf3050a54en" +
9.                 "5f67fc6c0b8e73c39188cea354bb31eb85008ae1b6c51c16a4dfd8c0509fb960a8241f6d9a8e700450d5553acabe01d3e03b4cbf3050a54en" +
10.                 "5f67fc6c0b8e73c39188cea354bb31eb85008ae1b6c51c16743eb9f5ef229159n");
11.  
12.         String keyA = convertToBinary("YAMEK");
13.         String cipherA = convertToBinary("8f04ebe8c8c030d2413be892640ebd097455b99cd3f11ea898b0adff9ef20985a2a6a44b81c4e558637170482ee4236fc3e7504f2aeb88e3n" +
14.                 "8f04ebe8c8c030d2413be892640ebd097455b99cd3f11ea898b0adff9ef20985a2a6a44b81c4e558637170482ee4236fc3e7504f2aeb88e3n" +
15.                 "8f04ebe8c8c030d2413be892640ebd097455b99cd3f11ea8a0e38e1ded248b33n");
16.  
17.         String keyB = convertToBinary("YAMEP");
18.         String cipherB = convertToBinary("0bcb11158ccf687f92403f7d35365adfc8fada72657c95f7310366c67b8af50b5f839c1f02e11b08dabedaf3ccfd8ae07125640ab29265ban" +
19.                 "0bcb11158ccf687f92403f7d35365adfc8fada72657c95f7310366c67b8af50b5f839c1f02e11b08dabedaf3ccfd8ae07125640ab29265ban" +
20.                 "0bcb11158ccf687f92403f7d35365adfc8fada72657c95f78572d9759e58a655n");
21.  
22.         String keyC = convertToBinary("YAMON");
23.         String cipherC = convertToBinary("7b4c8b41d78a32f0aba8c10ac0411e3bf97cb2a284bedcd0d9350bc9cb67fc9438bc6fc383ebf50f35f28c2ecd2e280b677b78fb0806146fn" +
24.                 "7b4c8b41d78a32f0aba8c10ac0411e3bf97cb2a284bedcd0d9350bc9cb67fc9438bc6fc383ebf50f35f28c2ecd2e280b677b78fb0806146fn" +
25.                 "7b4c8b41d78a32f0aba8c10ac0411e3bf97cb2a284bedcd0908631f438a5a597n");
26.  
27.         check(keyA, cipherA);
28.         check(keyB, cipherB);
29.         check(keyC, cipherC);
30.  
31.     }
32.  
33.     private static String convertToBinary(String text) {
34.         StringBuilder builder = new StringBuilder();
35.         char[] textChars = text.toCharArray();
36.         for (char c : textChars) {
37.             builder.append(Integer.toBinaryString(c));
38.         }
39.         return builder.toString();
40.     }
41.  
42.     private static void check(String key, String cipher) {
43.         int keyDifferent = 0;
44.         int cipherDifferent = 0;
45.  
46.         for(int i=0;i<mainKey.length();i++){
47.             if(mainKey.charAt(i)!=key.charAt(i)){
48.                 keyDifferent++;
49.             }
50.         }
51.  
52.         for(int i=0;i<mainCipher.length();i++){
53.             if(i>=cipher.length()) break;
54.             if(mainCipher.charAt(i)!=cipher.charAt(i)){
55.                 cipherDifferent++;
56.             }
57.         }
58.         System.out.println("KEY: " + keyDifferent);
59.         System.out.println("CIPHER: " + cipherDifferent);
60.     }
61. }