root@kali:/# rm -rf /var/lib/apt/lists root@kali:/# apt-get update root@kali:/# apt-get install kali-archive-keyring
root@kali:/# gpg --keyserver pgpkeys.mit.edu --recv-key ED444FF07D8D0BF6 root@kali:/# apt-key adv --keyserver hkp://keys.gnupg.net --recv-keys 7D8D0BF6 root@kali:/# gpg --keyserver hkp://keys.gnupg.net --recv-key 7D8D0BF6 root@kali:/# gpg -a --export ED444FF07D8D0BF6 | sudo apt-key add -
root@kali:/# apt-get update