diff --git a/upassword b/upassword
index 5105cb2..6c4a8f6 100755
--- a/upassword
+++ b/upassword
@@ -4,9 +4,12 @@ compiler=javac
 mainClass=upassword
 compileAndGo
 
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.io.UnsupportedEncodingException;
@@ -4758,6 +4761,8 @@ public class upassword {
         return Pattern.matches("\\d{8}", codEtu);
     }
 
+    private static boolean ETU_PASSWORD_GROUPS_LOCKED = true;
+
     private static final String[] ETU_PASSWORD_GROUPS = new String[] {
             //
             "jiPV/09lHKI1uz+a9vUpX0yMUIy9YAeIwfHPXoA81ik=",
@@ -4770,9 +4775,12 @@ public class upassword {
             "yYjWpZXP2EMWp7VZR+0xPA=="};
 
     private static final void unlockEtuPasswordGroups(String skey) throws Exception {
-        byte[] key = AESEnc.getKey(skey);
-        for (int i = 0; i < ETU_PASSWORD_GROUPS.length; i++) {
-            ETU_PASSWORD_GROUPS[i] = AESEnc.sdecrypt(ETU_PASSWORD_GROUPS[i], key);
+        if (ETU_PASSWORD_GROUPS_LOCKED) {
+            byte[] key = AESEnc.getKey(skey);
+            for (int i = 0; i < ETU_PASSWORD_GROUPS.length; i++) {
+                ETU_PASSWORD_GROUPS[i] = AESEnc.sdecrypt(ETU_PASSWORD_GROUPS[i], key);
+            }
+            ETU_PASSWORD_GROUPS_LOCKED = false;
         }
     }
 
@@ -4820,7 +4828,7 @@ public class upassword {
                     + "\n        avec les options -G, -s, -e et -d"
                     + "\n    --shell"
                     + "\n        Afficher les valeurs pour évaluation par le shell");
-            System.exit(0);
+            return;
         }
 
         EAction action = EAction.HASH_PASSWORD;
@@ -5081,7 +5089,33 @@ public class upassword {
         }
     }
 
+    private static final Pattern SPACES = Pattern.compile("\\s+");
+
     public static void main(String[] args) {
-        new upassword().run(args);
+        upassword upassword = new upassword();
+        if (args.length > 0 && args[0].equals("--batch")) {
+            StringBuilder sb = new StringBuilder();
+            for (int i = 1; i < args.length; i++) {
+                if (i > 1) sb.append(" ");
+                sb.append(args[i]);
+            }
+            String after = sb.toString();
+            if (after.length() == 0) after = null;
+
+            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+            try {
+                while (true) {
+                    String line = br.readLine();
+                    if (line == null) break;
+                    upassword.run(SPACES.split(line));
+                    if (after != null) println(after);
+                }
+            } catch (IOException e) {
+                die(null, e);
+            }
+
+        } else {
+            upassword.run(args);
+        }
     }
 }