First, the input files need to be specified by one or more
FILE commands. Afterwards, the actual operation is requested:
Request that the files specified by
FILE are encrypted and/or
signed. The command selects the default action. The UI server may
allow the user to change this default afterwards interactively, and
even abort the operation or complete it only on some of the selected
files and directories.
What it means to encrypt or sign a file or directory is specific to
the preferences of the user, the functionality the UI server provides,
and the selected protocol. Typically, for each input file a new file
is created under the original filename plus a protocol specific
.sig), which contain the
encrypted/signed file or a detached signature. For directories, the
server may offer multiple options to the user (for example ignore or
ENCRYPT_SIGN_FILES command requests a combined sign and
encrypt operation. It may not be available for all protocols (for
example, it is available for OpenPGP but not for CMS).
--nohup is mandatory. It is currently unspecified
what should happen if
--nohup is not present. Because
--nohup is present, the server always returns
promptly, and completes the operation asynchronously.