diff --git a/lib/talk/starChart/handle/other/do_sign.dart b/lib/talk/starChart/handle/other/do_sign.dart
index 631831ab..b5d8f310 100644
--- a/lib/talk/starChart/handle/other/do_sign.dart
+++ b/lib/talk/starChart/handle/other/do_sign.dart
@@ -2,7 +2,7 @@ import 'dart:async';
 
 import 'dart:typed_data';
 import 'package:convert/convert.dart';
-import 'package:fast_rsa/fast_rsa.dart' as fastRsa;
+// import 'package:fast_rsa/fast_rsa.dart' as fastRsa;
 import 'package:flutter/services.dart';
 import 'package:pointycastle/export.dart' as pc;
 import 'dart:convert';