From e6fed0e21f776d773b4ddf6da2ec6751432f06a1 Mon Sep 17 00:00:00 2001
From: moises <>
Date: Fri, 1 Nov 2024 02:06:39 +0000
Subject: [PATCH] 72_XiaomiDevice: requested fix for crash

git-svn-id: https://svn.fhem.de/fhem/trunk@29324 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/CHANGED                 | 1 +
 fhem/FHEM/72_XiaomiDevice.pm | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/fhem/CHANGED b/fhem/CHANGED
index 31b433d00..68b30d410 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it
+ - bugfix:  72_XiaomiDevice: requested fix for crash
  - change:  76_SolarForecast: attr setupInverterDevXX: new key 'limit', 
             the key 'capacity' is now mandatory! Attr affect70percentRule, 
             ctrlAutoRefresh, ctrlAutoRefreshFW are deleted
diff --git a/fhem/FHEM/72_XiaomiDevice.pm b/fhem/FHEM/72_XiaomiDevice.pm
index adc219e7d..cd9fedcdf 100755
--- a/fhem/FHEM/72_XiaomiDevice.pm
+++ b/fhem/FHEM/72_XiaomiDevice.pm
@@ -3974,7 +3974,11 @@ sub XiaomiDevice_Read($) {
     $Crypt::Rijndael_PP::DEFAULT_KEYSIZE = 128;
     $cbc = Crypt::CBC->new(-key => $key, -cipher => 'Crypt::Rijndael_PP',-iv => $iv, -literal_key => 1, -header => "none", -keysize => 16 );
   }
-  my $return = $cbc->decrypt_hex($data);
+  my $return = 00000000000000000000000000000000;
+  if(length($data)%32 == 0)
+  {
+    $return = $cbc->decrypt_hex($data);
+  }
 
   Log3 $name, 5, "$name: decrypted \n".$return;
   if( length($data) == 48 && $return !~ m/^{.*}/ )