= cryptsetup-luksKillSlot(8)
:doctype: manpage
:manmanual: Maintenance Commands
:mansource: cryptsetup {release-version}
:man-linkstyle: pass:[blue R < >]
:COMMON_OPTIONS:
:ACTION_LUKSKILLSLOT:

== Name

cryptsetup-luksKillSlot - wipe a key-slot from the LUKS device

== SYNOPSIS

*cryptsetup _luksKillSlot_ [<options>] <device> <key slot number>*

== DESCRIPTION

Wipe the key-slot number <key slot> from the LUKS device. Except running
in batch-mode (-q) a remaining passphrase must be supplied, either
interactively or via --key-file. This command can remove the last
remaining key-slot, but requires an interactive confirmation when doing
so. Removing the last passphrase makes a LUKS container permanently
inaccessible.

*<options>* can be [--key-file, --keyfile-offset, --keyfile-size,
--header, --disable-locks, --type, --verify-passphrase, --timeout].

*WARNING:* If you read the passphrase from stdin (without further
argument or with '-' as an argument to --key-file), batch-mode (-q) will
be implicitly switched on and no warning will be given when you remove
the last remaining passphrase from a LUKS container. Removing the last
passphrase makes the LUKS container permanently inaccessible.

*NOTE:* If there is no passphrase provided (on stdin or through
--key-file argument) and batch-mode (-q) is active, the key-slot is
removed without any other warning.

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