+;;;###autoload
+(defun epa-select-keys (context prompt &optional names secret)
+ "Display a user's keyring and ask him to select keys.
+CONTEXT is an epg-context.
+PROMPT is a string to prompt with.
+NAMES is a list of strings to be matched with keys. If it is nil, all
+the keys are listed.
+If SECRET is non-nil, list secret keys instead of public keys."