*/
    protected String createUserCodeFromUserId(String userCode) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final PrimaryCipher cipher = ComponentUtil.getPrimaryCipher();
        userCode = cipher.encrypt(userCode);
        if (fessConfig.isValidUserCode(userCode)) {
            return userCode;
        }
        return null;
    }

    /**

        return getComponent(AUTHENTICATION_MANAGER);
    }

    /**
     * Gets the primary cipher component.
     * @return The primary cipher.
     */
    public static PrimaryCipher getPrimaryCipher() {
        return getComponent(PrimaryCipher.class);
    }

    /**
     * Gets the crawler client factory component.
     * @return The crawler client factory.
     */