AES_DECRYPT function return null

[kim pham]

Hi all

the aes_decrypt function return null.
Anything was wrong with this aea_decrypt function.
Thanks in advance,
-K

public static String aes_encrypt16(String password) {  
        String strKey = "abcdefghijklmnop";
        try {         
            byte[] keyBytes = Arrays.copyOf(strKey.getBytes("ASCII"), 16);
            SecretKeySpec key = new SecretKeySpec(keyBytes, "AES"); 
            Cipher cipher = Cipher.getInstance("AES");  
            cipher.init(Cipher.ENCRYPT_MODE, key); 
            byte[] cleartext = password.getBytes("UTF-8"); 
            byte[] ciphertextBytes = cipher.doFinal(cleartext); 
            return new String(Hex.encodeHex(ciphertextBytes));   
           } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
        }

    public static String aes_decrypt16(String password) {  
        String strKey = "abcdefghijklmnop";
        try {         
            byte[] keyBytes = Arrays.copyOf(strKey.getBytes("ASCII"), 16);
            SecretKeySpec key = new SecretKeySpec(keyBytes, "AES"); 
            Cipher cipher = Cipher.getInstance("AES");  
            cipher.init(Cipher.DECRYPT_MODE, key); 
           
            byte[] original = cipher.doFinal(password.getBytes()); 
             
            return new String(original);   
           } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }

[greg stark]

You seem to be missing the hex decode step on decrypt. Are you getting an exception?

[kim pham]

Hi,
Didn't get the any exception? But it returns a null value.
Any suggestion?
KP

[greg stark]

kim pham wrote:Hi,
Didn't get the any exception? But it returns a null value.
Any suggestion?
KP

I suggest you read the first 11 words of my 16 word reply.