title: AES encryption for hex key, IV and data in Java
body: <p>I have to encrypt the hex string with key and IV also as Hex data. Please find the code i have used below. The problem is the string which i need to encrypt is in plaintext. I need to convert the plaintext into Hex and i do not know how to do that. Can any one help me with it ??</p>
  
  <p>I have been confirming using the webtool,</p>
  
  <p><a href="http://aes.online-domain-tools.com/" rel="nofollow">http://aes.online-domain-tools.com/</a></p>
  
  <pre><code>static byte[] IV = {  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
  
  static String plaintext = "00010101010102020202020303030303"; 
  
  static byte[] encryptionKey = {0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
      0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41  };
  
  public static void main(String[] args) {
      try {
  
          System.out.println("==Java==");
          System.out.println("plain:   " + plaintext);
  
          byte[] cipher = encrypt(plaintext, encryptionKey);
  
          System.out.print("cipher:  ");
          for (int i = 0; i &lt; cipher.length; i++) {
              // System.out.print(new Integer(cipher[i]) + " ");
              byte b = cipher[i];
              System.out.print(String.format("%02x", b &amp; 0xFF) + " ");
  
          }
  
          String decrypted = decrypt(cipher, encryptionKey);
  
          System.out.println("decrypt: " + decrypted);
  
      } catch (Exception e) {
          e.printStackTrace();
      }
  }
  
  public static byte[] encrypt(String plainText, byte[] encryptionKey)
          throws Exception {
      Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
      SecretKeySpec key = new SecretKeySpec(encryptionKey, "AES");
      cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(IV));
      return cipher.doFinal(plainText.getBytes("UTF-8"));
  }
  
  public static String decrypt(byte[] cipherText, byte[] encryptionKey)
          throws Exception {
      Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
      SecretKeySpec key = new SecretKeySpec(encryptionKey, "AES");
      cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(IV));
      return new String(cipher.doFinal(cipherText), "UTF-8");
  }
  </code></pre>
  
  <p>for the above data i should get,</p>
  
  <p>b6  06  da  b9  cd  dc  2d  89  4b  49  0a  ab  4e  e7  dc  58</p>
  
  <p>but instead am getting,</p>
  
  <p>e3 62 34 3f ad 8b 89 37 57 81 91 31 ee 79 49 52 26 bf 40 cb d0 ce 36 bd 8a 04 6b af 34 d9 f3 d7 </p>
  
  <p>Thanks in Advance.</p>