diff --git a/app/api/controller/Gt.php b/app/api/controller/Gt.php
index af2ae87d..2e8e00fc 100644
--- a/app/api/controller/Gt.php
+++ b/app/api/controller/Gt.php
@@ -26,7 +26,7 @@ MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwRUsPpbQPhBWrxFhG00k9VBgnHc7dCZyTQYI
         ];
         $d =$this->ASCII($data);
         var_dump($d);
-        $sha256 = hash('sha256', $d);
+        $sha256 = bin2hex(hash('sha256', $d));
         var_dump($sha256);
         openssl_public_encrypt($sha256,$msg,$publicKey);
         $data['sign'] = base64_encode($msg);