$ ssh-keygen -t rsa -b 2048 -C "[email protected]"
$ ssh-keygen -f ~/.ssh/id_rsa.pub -m PEM -e
$ ssh-keygen -lf ~/.ssh/id_rsa.pub
$ ssh-keygen -t rsa -b 2048 -C "[email protected]"
$ ssh-keygen -f ~/.ssh/id_rsa.pub -m PEM -e
$ ssh-keygen -lf ~/.ssh/id_rsa.pub