=item B<--key> SELECTOR

Specify a key for LUKS, to automatically open a LUKS device when using
the inspection.  C<ID> can be either the libguestfs device name, or
the UUID of the LUKS device.

=over 4

=item B<--key> C<ID>:key:KEY_STRING

Use the specified C<KEY_STRING> as passphrase.

=item B<--key> C<ID>:file:FILENAME

Read the passphrase from F<FILENAME>.

=back
