generate Secure ssh Key for remote ssh login / git

Goal: connect to a remote server by ssh keys (without a password)

on your local computer:

openssl genrsa -rand /dev/random -out id_rsa 2048

then get the public key:

openssl rsa -pubout -in id_rsa -out id_rsa.pub

put those 2 files in your ~/.ssh folder

If you can log in to the server over SSH using a password, you can transfer your RSA key by doing the following from your own computer:
ssh-copy-id <username>@<host>
(this will transfer your public key (id_rsa.pub) to the remote server)
Where and should be replaced by your username and the name of the computer you're transferring your key to.