Байты, BufferedImage, AES, GUI

public static BufferedImage DecryptImage(InputStream is) {
        try {
            SecretKeySpec skey = new SecretKeySpec(Settings.stylesSalt.getBytes(), "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_MODE, skey);
 
            byte[] buffer = new byte[1024];
            int bytesRead;
            ByteArrayOutputStream output = new ByteArrayOutputStream();
            while ((bytesRead = is.read(buffer)) != -1) {
                output.write(buffer, 0, bytesRead);
            }
            
            byte[] outputBytes = cipher.doFinal(output.toByteArray());
            
            ByteArrayInputStream baos = new ByteArrayInputStream(outputBytes);
            BufferedImage result = ImageIO.read(baos);
 
            return result;
        } catch (NoSuchPaddingException | NoSuchAlgorithmException
                | InvalidKeyException | BadPaddingException
                | IllegalBlockSizeException | IOException ex) {
            ex.printStackTrace();
        }
 
        return null;
    }

public class EncodeDecode {
    private static final String ALGORITHM = "AES";
    private static final String TRANSFORMATION = "AES";
 
    public static void encrypt(String key, File inputFile, File outputFile)
            throws Exception {
        doCrypto(Cipher.ENCRYPT_MODE, key, inputFile, outputFile);
    }
 
    public static void decrypt(String key, File inputFile, File outputFile)
            throws Exception {
        doCrypto(Cipher.DECRYPT_MODE, key, inputFile, outputFile);
    }
 
    private static void doCrypto(int cipherMode, String key, File inputFile,
            File outputFile) throws Exception {
        try {
            Key secretKey = new SecretKeySpec(key.getBytes(), ALGORITHM);
            Cipher cipher = Cipher.getInstance(TRANSFORMATION);
            cipher.init(cipherMode, secretKey);
 
            FileInputStream inputStream = new FileInputStream(inputFile);
            byte[] inputBytes = new byte[(int) inputFile.length()];
            inputStream.read(inputBytes);
 
            byte[] outputBytes = cipher.doFinal(inputBytes);
 
            FileOutputStream outputStream = new FileOutputStream(outputFile);
            outputStream.write(outputBytes);
 
            inputStream.close();
            outputStream.close();
 
        } catch (NoSuchPaddingException | NoSuchAlgorithmException
                | InvalidKeyException | BadPaddingException
                | IllegalBlockSizeException | IOException ex) {
            throw new Exception("Error encrypting/decrypting file", ex);
        }
    }
}