public static function sign($params) { ksort($params); $sourceSignString = SignUtil::signString($params, SignUtil::$unSignKeyListForWap); LogUtil::log($sourceSignString, LogUtil::OTHER); $sha256SourceSignString = hash("sha256", $sourceSignString); //LogUtil::log( $sha256SourceSignString, LogUtil::OTHER ); return RSAUtils::encryptByPrivateKey($sha256SourceSignString); }