解密方式如何在数据库中用SQL实现

以下是加密方式，现在要用SQL在数据库中实现解密，能实现吗？怎么实现？谢谢！

// 加密密码
public final static String enPass(String password) {
    try {
        SecretKey key = readKey();
        Cipher cip = Cipher.getInstance("DESede");
        cip.init(Cipher.ENCRYPT_MODE, key);
        byte[] cipBytes = cip.doFinal(password.getBytes());

        String sblob = new BASE64Encoder().encode(cipBytes);

        return sblob;
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return "";
    }
}

private final static SecretKey readKey() {
    try {
        String skey = "changxiaohui_changxiaohui_changxiaohui";
        byte[] bs = skey.getBytes("UTF-8");
        KeySpec pbe = new DESedeKeySpec(bs);
        SecretKeyFactory skf = SecretKeyFactory.getInstance("DESede");

        SecretKey key = skf.generateSecret(pbe);
        return key;
    } catch (Exception e) {
        // TODO: handle exception
        e.printStackTrace();
    }
    return null;
}

http://blog.csdn.net/huwei2003/article/details/7557095