How to install GnuPG on Debian/Kali Linux?

Question

I would like to know how to install GnuPG on Debian (this case it's Kali). I understand you have to compile it, I can't find a pre-compiled version anywhere.

Solution

GnuPG is preinstalled on Debian (and to assume, all its descendant releases). GnuPG is a very important part of the operating system, as it is used to verify the repository lists and package sources.

It should already be available as gpg (GnuPG 1, "classic" release) or gpg2 (GnuPG 2.0 or 2.1, "stable" or "modern" releases). If you only have one of those, and want to install the other, they packages are named gnupg and gnupg2. If you do not see them, you might have to run apt-get update before.