Consider to use epa-protocol even if prefix-arg is not specified.

diff --git a/epa.el b/epa.el
index 2e1206b..1dc4eda 100644 (file)
--- a/epa.el
+++ b/epa.el
@@ -341,7 +341,7 @@ If ARG is non-nil, mark the current line."
                        (format "Protocol? (default %S) " epa-protocol)
                        '(("OpenPGP") ("CMS"))
                        nil t nil nil (symbol-name epa-protocol)))))
-     (or epa-list-keys-arguments (list nil nil nil))))
+     (or epa-list-keys-arguments (list nil nil epa-protocol))))
   (unless (and epa-keys-buffer
               (buffer-live-p epa-keys-buffer))
     (setq epa-keys-buffer (generate-new-buffer "*Keys*")))