diff --git a/lib/symmetric_encryption/keystore/file.rb b/lib/symmetric_encryption/keystore/file.rb
index 16d3c21..31ed8a1 100644
--- a/lib/symmetric_encryption/keystore/file.rb
+++ b/lib/symmetric_encryption/keystore/file.rb
@@ -1,3 +1,5 @@
+require 'etc'
+
 module SymmetricEncryption
   module Keystore
     class File
@@ -85,7 +87,11 @@ def correct_permissions?
       end
 
       def owned?
-        stat.owned?
+        stat.owned? || custom_owned?
+      end
+
+      def custom_owned?
+        ENV['SYMMETRIC_ENCRYPTION_ALLOWED_FILE_OWNER_USERNAME'] == Etc.getlogin
       end
 
       def stat