Encrpytitoin?!

src/Encryption/Encyptonator.java

@@ -1,29 +1,79 @@
 package Encryption;
 
 import javax.crypto.Cipher;
+import javax.crypto.NoSuchPaddingException;
 import javax.crypto.SecretKey;
-import javax.crypto.spec.SecretKeySpec;
+import javax.crypto.SecretKeyFactory;
+import javax.crypto.spec.DESKeySpec;
 import java.nio.charset.StandardCharsets;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.security.spec.InvalidKeySpecException;
 import java.util.Base64;
+import java.util.Scanner;
 
 public class Encyptonator
 {
-       private static Cipher ecipher;
-    private static Cipher dcipher;
+    protected static Cipher ecipher;
+    protected static Cipher dcipher;
 
-    private static SecretKey key;
+    protected static SecretKey key;
+
+    public static void main(String[] args)
+    {
+        Scanner input = new Scanner(System.in);
+
+
+        try
+        {
+
+            // generate secret key using DES algorithm
+//            key = KeyGenerator.getInstance("DES").generateKey();
+            System.out.println("Enter key: ");
+            key = convertKey(input.nextLine());
+
+
+            ecipher = Cipher.getInstance("DES");
+            dcipher = Cipher.getInstance("DES");
+
+            // initialize the ciphers with the given key
+
+            ecipher.init(Cipher.ENCRYPT_MODE, key);
+
+            dcipher.init(Cipher.DECRYPT_MODE, key);
+
+            System.out.println("Enter plaintext: ");
+            String encrypted = encrypt(input.nextLine());
+
+            String decrypted = decrypt(encrypted);
+            System.out.println("Encrypted: " + encrypted);
+            System.out.println("Decrypted: " + decrypted);
+
+
+        } catch (NoSuchAlgorithmException e)
+        {
+            System.out.println("No Such Algorithm:" + e.getMessage());
+        } catch (NoSuchPaddingException e)
+        {
+            System.out.println("No Such Padding:" + e.getMessage());
+        } catch (InvalidKeyException e)
+        {
+            System.out.println("Invalid Key:" + e.getMessage());
+        }
+
+    }
 
 
     public static String encrypt(String str)
     {
-
-        try {
+        try
+        {
 
             // encode the string into a sequence of bytes using the named charset
 
             // storing the result into a new byte array.
 
-            byte[] utf8 = str.getBytes(StandardCharsets.UTF_8);
+            byte[] utf8 = str.getBytes();
 
             byte[] enc = ecipher.doFinal(utf8);
 
@@ -33,51 +83,63 @@ public class Encyptonator
 
             return new String(enc);
 
+        } catch (Exception e)
+        {
+
+            e.printStackTrace();
+
         }
 
-
-  catch (Exception e)
-  {
-
-    e.printStackTrace();
-
-  }
-
-  return null;
+        return null;
 
     }
 
-    public static String decrypt(String str) {
+    public static String decrypt(String str)
+    {
 
-  try {
+        try
+        {
 
-    // decode with base64 to get bytes
+            // decode with base64 to get bytes
 
-byte[] dec = Base64.getDecoder().decode(str.getBytes());
+            byte[] dec = Base64.getDecoder().decode(str.getBytes());
 
-byte[] utf8 = dcipher.doFinal(dec);
+            byte[] utf8 = dcipher.doFinal(dec);
 
 // create new string based on the specified charset
 
-return new String(utf8, StandardCharsets.UTF_8);
+            return new String(utf8, StandardCharsets.UTF_8);
 
-  }
+        } catch (Exception e)
+        {
 
-  catch (Exception e) {
+            e.printStackTrace();
 
-    e.printStackTrace();
+        }
 
-  }
-
-  return null;
+        return null;
 
     }
-    public static SecretKey convertStringToSecretKey(String encodedKey)
+
+    public static SecretKey convertKey(String HexaKey)
     {
-        byte[] decodedKey = Base64.getDecoder().decode(encodedKey);
-        SecretKey originalKey = new SecretKeySpec(decodedKey,0,decodedKey.length,"DES");
-        return originalKey;
+        try
+        {
+            byte[] keyData = HexaKey.getBytes();
+            SecretKeyFactory keyF = SecretKeyFactory.getInstance("DES");
+            DESKeySpec desKeySpec = new DESKeySpec(keyData);
+
+
+            return keyF.generateSecret(desKeySpec);
+
+
+        } catch (NoSuchAlgorithmException | InvalidKeyException | InvalidKeySpecException e)
+        {
+            e.printStackTrace();
+        }
+        return null;
     }
 
+
 }
 

src/Encryption/EncyptonatorTest.java

@@ -0,0 +1,72 @@
+package Encryption;
+
+import org.junit.jupiter.api.Test;
+
+import javax.crypto.Cipher;
+import javax.crypto.NoSuchPaddingException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import static org.testng.AssertJUnit.assertEquals;
+
+class EncyptonatorTest extends Encyptonator
+{
+
+    @Test
+    void manyquestions()
+    {
+        try
+        {
+
+            // generate secret key using DES algorithm
+//            key = KeyGenerator.getInstance("DES").generateKey();
+            key = convertKey("3b3898371520f75e");
+            String plaintext = "123abc456def7890";
+
+
+            ecipher = Cipher.getInstance("DES");
+            dcipher = Cipher.getInstance("DES");
+
+            // initialize the ciphers with the given key
+
+            ecipher.init(Cipher.ENCRYPT_MODE, key);
+
+            dcipher.init(Cipher.DECRYPT_MODE, key);
+
+            String encrypted = encrypt(plaintext);
+            System.out.println(encrypted);
+
+            String decrypted = decrypt(encrypted);
+            assertEquals(decrypted, plaintext);
+            String dec = decrypt("LJrviRhD0DtdRy9DL8HoxNHK37k7D3/t");
+            assertEquals(plaintext, dec);
+        }
+        catch (NoSuchAlgorithmException e)
+        {
+            System.out.println("No Such Algorithm:" + e.getMessage());
+        } catch (NoSuchPaddingException e)
+        {
+            System.out.println("No Such Padding:" + e.getMessage());
+        } catch (InvalidKeyException e)
+        {
+            System.out.println("Invalid Key:" + e.getMessage());
+        }
+
+    }
+
+    @Test
+    void encrypt()
+    {
+
+    }
+
+    @Test
+    void decrypt()
+    {
+    }
+
+    @Test
+    void convertStringToSecretKey()
+    {
+    }
+}