/**
* 验签
*
* @param $params
*
* @return int
*/
public static function verify($params)
{
//global $log;
// 公钥
$public_key = self::getPulbicKeyByCertId($params['certId']);
// echo $public_key.'<br/>';
// 签名串
$signature_str = $params['signature'];
unset($params['signature']);
$params_str = Common::coverParamsToString($params);
//$log->LogInfo ( '报文去[signature] key=val&串>' . $params_str );
$signature = base64_decode($signature_str);
// echo date('Y-m-d',time());
$params_sha1x16 = sha1($params_str, FALSE);
//$log->LogInfo ( '摘要shax16>' . $params_sha1x16 );
$isSuccess = openssl_verify($params_sha1x16, $signature, $public_key, OPENSSL_ALGO_SHA1);
//$log->LogInfo ( $isSuccess ? '验签成功' : '验签失败' );
return $isSuccess;
}
/**
* 交易退款
*
* @param $batch_no //退款的批次号
* @param $trade_no //商户交易号
* @param $amount //退款的金额
* @param null $extra //订单退款的其他信息
*
* @return mixed
*/
public function refund($batch_no, $trade_no, $amount, $extra = null)
{
$parameters = array('version' => '5.0.0', 'encoding' => 'utf-8', 'certId' => Secure::getSignCertId(), 'signMethod' => '01', 'txnType' => '04', 'txnSubType' => '00', 'bizType' => '000201', 'accessType' => '0', 'channelType' => '07', 'orderId' => $batch_no, 'merId' => Config::MERCHANT_ID, 'origQryId' => $extra['thirdparty_trade_no'], 'txnTime' => date('YmdHis'), 'txnAmt' => $extra['amount'] * 100, 'backUrl' => Config::SDK_BACK_NOTIFY_URL, 'reqReserved' => ' 透传信息');
Secure::sign($parameters);
$result = Http::sendHttpRequest(Http::getRequestParamString($parameters), Config::SDK_BACK_TRANS_URL);
$result_arr = Common::coverStringToArray($result);
return Secure::verify($result_arr) ? $result_arr : false;
}