From 0fa3034dd263b581f71491cd145769b82f3cb240 Mon Sep 17 00:00:00 2001
From: Elmar Ludwig <elmar.ludwig@uni-osnabrueck.de>
Date: Thu, 12 May 2022 09:52:31 +0000
Subject: [PATCH] add fallback if `oauth_signature_method` is not set, fixes
 #1042

Closes #1042

Merge request studip/studip!612
---
 lib/models/LtiData.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/models/LtiData.php b/lib/models/LtiData.php
index fd2014676bb..2f0a08d41a1 100644
--- a/lib/models/LtiData.php
+++ b/lib/models/LtiData.php
@@ -111,7 +111,7 @@ class LtiData extends SimpleORMap
             return $this->tool->oauth_signature_method;
         }
 
-        return $this->options['oauth_signature_method'];
+        return $this->options['oauth_signature_method'] ?? 'sha1';
     }
 
     /**
-- 
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