try {
            IvParameterSpec ivps = new IvParameterSpec("0123456789abcdef".getBytes("UTF-8"));
            FileInputStream fis = new FileInputStream(srcFileName);
            FileOutputStream fos = new FileOutputStream(destFileName);
            SecretKeySpec sks = new SecretKeySpec("fedcba9876543210".getBytes("UTF-8"), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/ZeroBytePadding");
            cipher.init(Cipher.ENCRYPT_MODE, sks, ivps);
            CipherOutputStream cos = new CipherOutputStream(fos, cipher);
            int b;
            byte[] d = new byte[8];
            while ((b = fis.read(d)) != -1) {
                cos.write(d, 0, b);
            }
            cos.flush();
            cos.close();
            fis.close();
        } catch (Exception e) {
            SessionHelper.showToast(e.getMessage());
        }

$f = fopen($srcFileName, 'r');
$encrypted = fread($f, filesize($srcFileName));
fclose($f);

$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, hex2bin('fedcba9876543210'), hex2bin($encrypted), MCRYPT_MODE_CBC, '0123456789abcdef');

$f = fopen($destFileName, 'w+');
fwrite($f, $decrypted);
fclose($f);