Open the file for appending. See ietf-tools#688

 - Legacy-Id: 3589

Author: emiliosanchez

ietf/ietfauth/forms.py

@@ -116,7 +116,7 @@ def save_password_file(self):
             username = self.username
             prefix = '%s:%s:' % (username, realm)
             key = hashlib.md5(prefix + password).hexdigest()
-            f = open(pass_file, 'w+')
+            f = open(pass_file, 'a+')
             f.write('%s%s\n' % (prefix, key))
             f.close()
         else: