Java AES加密有关问题

    /**     * 数据加密     *      * @param name     *               算法名称     * @param password     *               密钥     * @param message     *               明文     * @return 返回密文     */    public static byte[] Encode(String name, String password, byte[] message) {        if (name == null || name.length() <= 0                || password == null || password.length() <= 0                || message == null || message.length <= 0)            return null;                if (!name.equals(ALGO_AES))            return null;                byte[] content = null;                KeyGenerator kgen = null;                try {            kgen = KeyGenerator.getInstance(name);            byte[] okey = password.getBytes();            kgen.init(128, new SecureRandom(okey));            SecretKey secretKey = kgen.generateKey();                        Cipher cipher = Cipher.getInstance(name);    // 创建密码器             cipher.init(Cipher.ENCRYPT_MODE, secretKey);// 初始化            content = cipher.doFinal(message);        } catch (NoSuchAlgorithmException e) {            e.printStackTrace();        } catch (NoSuchPaddingException e) {            e.printStackTrace();        } catch (InvalidKeyException e) {            e.printStackTrace();        } catch (IllegalBlockSizeException e) {            e.printStackTrace();        } catch (BadPaddingException e) {            e.printStackTrace();        }        return content;    }