Fix substr(null) in constructor

kelvinmo · Mar 29, 2024 · c47bf01 · c47bf01
1 parent 5460000
commit c47bf01
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/SimpleJWT/Crypt/KeyManagement/AESGCMKeyWrap.php b/src/SimpleJWT/Crypt/KeyManagement/AESGCMKeyWrap.php
@@ -52,7 +52,7 @@ class AESGCMKeyWrap extends BaseAlgorithm implements KeyEncryptionAlgorithm {
     private $aesgcm;
 
     public function __construct(?string $alg) {
-        $this->aesgcm = new AESGCM(substr($alg, 0, -2));
+        $this->aesgcm = new AESGCM(($alg == null) ? null : substr($alg, 0, -2));
         parent::__construct($alg);
     }