last

backend/src/main/java/com/crypto/Caesar.java

@@ -10,4 +10,19 @@ public class Caesar {
         }
         return String.valueOf(encoded);
     }
+
+    public static String[] decode(String ciphertext){
+        String alphabet = "abcdefghijklmnopqrstuvwxyz";
+        char encoded[] = ciphertext.toCharArray();
+        char decoded[] = new char[ciphertext.length()];
+        String bruteforce[] = new String[26];
+        for(int key = 0; key < alphabet.length(); key++){
+            for(int i = 0; i < ciphertext.length(); i++){
+                decoded[i] = alphabet.charAt(alphabet.indexOf(encoded[i]) + key % 26);
+            }
+            bruteforce[key] = String.valueOf(encoded);
+        }
+        return bruteforce;
+
+    }
 }