diff --git a/app/Helper/Baofu/Baofu.php b/app/Helper/Baofu/Baofu.php
index e03eb15..a908af4 100644
--- a/app/Helper/Baofu/Baofu.php
+++ b/app/Helper/Baofu/Baofu.php
@@ -513,7 +513,7 @@ class Baofu
 
         echo json_encode($content);
         echo PHP_EOL;
-        $contentSign = SignatureUtil::sign(base64_encode(json_encode($content)), $this->getPfxFilePath(), $this->getPrivateKeyPassword());
+        $contentSign = Rsa::encryptedByPrivateKey(base64_encode(json_encode($content)), $this->getPfxFilePath(), $this->getPrivateKeyPassword());
         $header['content'] = $contentSign;
 
         echo json_encode($header);