#!/bin/bash
############################################################
#                                                          #
#  AQUERRE TECHNOLOGIES LLC                                #
#  LUKS ENCRYPTION BASH SCRIPTS                            #
#  COPYRIGHT 2014-2017                                     #
#                                                          #
#  luksKillSlot -- remove key from device DEV in specified #
#                  SLOT using another key from KEYFILE of  #
#                  length KEYLEN                           #
#                                                          #
############################################################

DEV=/dev/sda1
SLOT=0
KEYFILE=/home/noah/KEYFILE.txt
KEYLEN=40

cryptsetup -v --key-file=${KEYFILE} --keyfile-size=${KEYLEN} luksKillSlot ${DEV} ${SLOT}

#manual key entry from STDIN:
#cryptsetup -v luksKillSlot ${DEV} ${SLOT}