From d5f987c9e96caf8fec101f44d2cd082dc66dd858 Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Wed, 4 May 2022 20:41:49 +0200
Subject: [PATCH] hw keepkey: workaround protobuf weirdness

this adds a hackish workaround for https://github.com/spesmilo/electrum/issues/7779
---
 electrum/plugins/keepkey/clientbase.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/electrum/plugins/keepkey/clientbase.py b/electrum/plugins/keepkey/clientbase.py
index 67e7b78d6..5fa2339d7 100644
--- a/electrum/plugins/keepkey/clientbase.py
+++ b/electrum/plugins/keepkey/clientbase.py
@@ -162,6 +162,9 @@ class KeepKeyClientBase(HardwareClientBase, GuiMixin, Logger):
         self.transport.write(self.proto.Cancel())
 
     def i4b(self, x):
+        if x < 0:
+            # hack. workaround for https://github.com/spesmilo/electrum/issues/7779
+            x += 2 ** 32
         return pack('>I', x)
 
     @runs_in_hwd_thread