diff --git a/app/api/controller/Gt.php b/app/api/controller/Gt.php
index 2e8e00fc..60d7824e 100644
--- a/app/api/controller/Gt.php
+++ b/app/api/controller/Gt.php
@@ -26,9 +26,10 @@ MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwRUsPpbQPhBWrxFhG00k9VBgnHc7dCZyTQYI
         ];
         $d =$this->ASCII($data);
         var_dump($d);
-        $sha256 = bin2hex(hash('sha256', $d));
+        $sha256 = hash('sha256', $d);
         var_dump($sha256);
-        openssl_public_encrypt($sha256,$msg,$publicKey);
+        $privateKey = openssl_pkey_get_public($publicKey);
+        openssl_public_encrypt($sha256,$msg,$privateKey);
         $data['sign'] = base64_encode($msg);
         print_r("<pre>");
         var_dump($data);