A few days back the developers of KALI Linux announced that they were planning to include "emergency self-destruction of LUKS" in Kali. They write a poll asking the users whether they should implement the cryptsetup patch in the cryptsetup package, and now it's already there in Kali Linux 1.0.6 latest release.
It’s been a while since the Kali deveoper last minor release which makes 1.0.6 a more significant update than usual. With a new 3.12 kernel, a LUKS nuke feature, new Kali ARM build scripts, and Kali AMAZON AMI and Google Compute image generation scripts,
A couple days back before the release, one of the developers had an idea to add a "nuke" feature where it fill destroy all the data stored in Kali system after inputting a boot password. They use an old cryptsetup patch created back in 2008 by Juergen Pabel that adding a "nuke" password to cryptsetup which when used, deletes all keyslots and makes the data on the drive inaccessible.
Offensive Security has finally announced the release of the latest version i.e. Kali Linux 1.0.6 with Kernel version 3.12 yesterday January 10, 2014, and also added the Self Destruct feature along with many new penetration testing and hacking tools.
Lastly, they say that if we already have a Kali Linux installation up and running, we don’t need to download a new ISO. We can easily upgrade our installation as follows:
root@kali:~# apt-get update
root@kali:~# apt-get dist-upgrade
or if we want to download the image, we can go to official Kali Linux download page.