diff --git a/alipay/Aliverify.php b/alipay/Aliverify.php
index f5c69c5..e89f2db 100644
--- a/alipay/Aliverify.php
+++ b/alipay/Aliverify.php
@@ -20,15 +20,23 @@ class Aliverify
     public static function initVerify()
     {
         global $config;
-        $aop = new \AopClient();
+        $aop = new \AopCertClient();
+        
+        $appCertPath = $config['alipay']['app_crt'];
+        $alipayCertPath = $config['alipay']['public_crt'];
+        $rootCertPath = $config['alipay']['root_crt'];
+        
         $aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
         $aop->appId = $config['alipay']['app_id'];
         $aop->rsaPrivateKey = $config['alipay']['private_key'];
-        $aop->alipayrsaPublicKey = $config['alipay']['public_key'];
+        $aop->alipayrsaPublicKey = $aop->getPublicKey($alipayCertPath);//调用getPublicKey从支付宝公钥证书中提取公钥
         $aop->apiVersion = '1.0';
         $aop->signType = 'RSA2';
-        $aop->postCharset = 'utf-8';
-        $aop->format = 'json';
+        $aop->postCharset='utf-8';
+        $aop->format='json';
+        $aop->isCheckAlipayPublicCert = true;//是否校验自动下载的支付宝公钥证书，如果开启校验要保证支付宝根证书在有效期内
+        $aop->appCertSN = $aop->getCertSN($appCertPath);//调用getCertSN获取证书序列号
+        $aop->alipayRootCertSN = $aop->getRootCertSN($rootCertPath);//调用getRootCertSN获取支付宝根证书序列号
 
         $request = new \AlipayUserCertifyOpenInitializeRequest();
         //$request = new AlipayUserCertifyOpenInitializeRequest ();  //TODO 官方这个地方写错了，应该用下面的代码才能实现