Usage: kstash [-h] [--enctype=string] [-e string] [--key-file=file] [-k file] [--convert-file]
   [--master-key-fd=fd] [--random-key] [--help] [--version]
-e string, --enctype=string encryption type
-k file, --key-file=file    master key file
--convert-file              just convert keyfile to new format
--master-key-fd=fd          filedescriptor to read passphrase from
--random-key                generate a random master key