SSH authenticate using certificates

krijo file ~/.ssh
un-auth access client to server
mkdir.ssh/   ##create .ssh if it is not created
server@CyberACAD:~/.ssh$ ssh-keygen ## generate keys
scp id_rsa.pub client@172.16.60.47:/home/client/.ssh/
client@xx:~/home/client/.ssh$ mv id_rsa.pub authorized_keys
ssh server@172.16.60.47 ## try to access client to server
:)
#ne Server
ssh-keygen
touch authorized_keys
cat id_rsa.pub > authotized_keys