diff --git a/SoObjects/SOGo/SOGoAuthenticator.h b/SoObjects/SOGo/SOGoAuthenticator.h
new file mode 100644
index 000000000..2a2f11d99
--- /dev/null
+++ b/SoObjects/SOGo/SOGoAuthenticator.h
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+/* SOGoAuthenticator.h - this file is part of SOGo
+ *
+ * Copyright (C) 2007 Inverse groupe conseil
+ *
+ * Author: Wolfgang Sourdeau <wsourdeau@inverse.ca>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef SOGOAUTHENTICATOR_H
+#define SOGOAUTHENTICATOR_H
+
+#import <Foundation/NSObject.h>
+
+@class NSString;
+@class SOGoUser;
+@class WOContext;
+
+@protocol SOGoAuthenticator <NSObject>
+
+- (NSString *) passwordInContext: (WOContext *) context;
+- (SOGoUser *) userInContext: (WOContext *) context;
+
+@end
+
+#endif /* SOGOAUTHENTICATOR_H */