diff -r b78e77619152 -r bb1c8a7b774c src/org/sonews/storage/Storage.java
--- a/src/org/sonews/storage/Storage.java	Sun Sep 11 15:05:04 2011 +0200
+++ b/src/org/sonews/storage/Storage.java	Wed Dec 31 12:07:40 2014 +0100
@@ -144,4 +144,7 @@
 
 	boolean update(Group group)
 			throws StorageBackendException;
+
+	public boolean authenticateUser(String username, char[] password)
+			throws StorageBackendException;
 }