diff --git a/smack-core/src/main/java/org/jivesoftware/smack/util/RandomUtil.java b/smack-core/src/main/java/org/jivesoftware/smack/util/RandomUtil.java
index 857557869..88c71e7aa 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/util/RandomUtil.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/util/RandomUtil.java
@@ -1,6 +1,6 @@
 /**
  *
- * Copyright 2003-2007 Jive Software, 2016-2019 Florian Schmaus.
+ * Copyright 2003-2007 Jive Software, 2016-2021 Florian Schmaus.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -47,4 +47,8 @@ public class RandomUtil {
     public static int nextSecureRandomInt() {
         return SECURE_RANDOM.get().nextInt();
     }
+
+    public static void fillWithSecureRandom(byte[] bytes) {
+        SECURE_RANDOM.get().nextBytes(bytes);
+    }
 }