diff --git a/src/Credentials.java b/src/Credentials.java
index 89dd314..d870aba 100644
--- a/src/Credentials.java
+++ b/src/Credentials.java
@@ -11,9 +11,21 @@ public class Credentials {
     }
 
     public boolean valid() {
+
+        boolean usernameGiven = false;
+        String hashData;
+
+        //iterator over file
         for (String line:
                 Helpers.readTextdatei("data/passwd.txt")) {
-            System.out.println(line);
+            if(login == line) {
+                usernameGiven = true;
+                continue;
+            }
+            if(usernameGiven && hash == line) {
+                return true;
+            }
+
         }
         return false;
     }