danpacu@MacdeDan .ssh % ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/danpacu/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /Users/danpacu/.ssh/id_rsa.
Your public key has been saved in /Users/danpacu/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:fNigi4D07AKLYIGQbNHpdS4X2lM/XGomb9RGo8YKTPg danpacu@MacdeDan.home
The key's randomart image is:
+---[RSA 3072]----+
|ooo . .          |
|+o o o + .   +   |
|oo. . O + + * .  |
|..+. o E = % o   |
|+..o  + S @ o    |
|=... . . o o     |
|o. .. .   .      |
|  .              |
|                 |
+----[SHA256]-----+
danpacu@MacdeDan .ssh % ssh-copy-id -i /Users/danpacu/.ssh/id_rsa.pub pi@192.168.1.71
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/Users/danpacu/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
pi@192.168.1.71's password:

Number of key(s) added:        1

Now try logging into the machine, with:   "ssh 'pi@192.168.1.71'"
and check to make sure that only the key(s) you wanted were added.

danpacu@MacdeDan .ssh % cat id_rsa.pub
ssh-rsa .............
danpacu@MacdeDan .ssh %

pi@raspberrypi:~ $ cd .ssh
pi@raspberrypi:~/.ssh $ ls
authorized_keys  known_hosts
pi@raspberrypi:~/.ssh $ cat authorized_keys
ssh-rsa ...............

pi@raspberrypi:~/.ssh $ sudo chmod 700 /home/pi/.ssh/authorized_keys
pi@raspberrypi:~/.ssh $ cd ..
pi@raspberrypi:~ $ ls -la /home/pi/.ssh
total 20
drwx------  2 pi pi 4096 dic 14 21:03 .
drwxr-xr-x 26 pi pi 4096 dic 14 20:07 ..
-rwx------  1 pi pi  575 dic 14 21:03 authorized_keys
-rwx------  1 pi pi  222 nov 18 21:17 known_hosts
pi@raspberrypi:~ $