Create public/private key pair
dnssec-keygen is a tool in dnsutils on Debian. With it, I create a key pair.
The shell session is like this:
$ /usr/sbin/dnssec-keygen -T KEY -a RSASHA256 -b 2048 -n HOST www.gniibe.org. Generating key pair.............................+++ ...........................................................+++ Kwww.gniibe.org.+008+34054
As a …