diff --git a/resources/lib/utils.php b/resources/lib/utils.php
index 9c281145..1d06c737 100644
--- a/resources/lib/utils.php
+++ b/resources/lib/utils.php
@@ -5,6 +5,7 @@
 use UnityWebPortal\lib\exceptions\EncodingUnknownException;
 use UnityWebPortal\lib\exceptions\EncodingConversionException;
 use phpseclib3\Crypt\PublicKeyLoader;
+use phpseclib3\Exception\NoKeyLoadedException;
 
 // like assert() but not subject to zend.assertions config
 function ensure(bool $condition, ?string $message = null): void
@@ -16,24 +17,10 @@ function ensure(bool $condition, ?string $message = null): void
 
 function testValidSSHKey(string $key_str): bool
 {
-    // key loader still throws, these just mute warnings for phpunit
-    // https://github.com/phpseclib/phpseclib/issues/2079
-    if ($key_str == "") {
-        return false;
-    }
-    // https://github.com/phpseclib/phpseclib/issues/2076
-    // https://github.com/phpseclib/phpseclib/issues/2077
-    // there are actually valid JSON keys (JWK), but I don't think anybody uses it
-    if (!is_null(@json_decode($key_str))) {
-        return false;
-    }
     try {
         PublicKeyLoader::load($key_str);
         return true;
-        // phpseclib should throw only NoKeyLoadedException but that is not the case
-        // https://github.com/phpseclib/phpseclib/pull/2078
-        // } catch (\phpseclib3\Exception\NoKeyLoadedException $e) {
-    } catch (\Throwable $e) {
+    } catch (NoKeyLoadedException $e) {
         return false;
     }
 }