take note of the private key cat ~/.ssh/id_ed25519
and public key cat ~/.ssh/id_ed25519.pub
## copy your pub key to clipboard
## login to your github account
Click your account (top right corner)
-> Settings -> SSH and GPG Keys -> New SSH key
give it a name and paste the public key from clipboard
Now when connecting to the remote repo in github use
git@github.com:youraccount/yourrepo.git
instead of https://github.com/youraccount/yourrepo.git as the URL
This will make the connection use SSH with key authentication
On Windows (git for windows)
## Launch git bash, create the SSH key
ssh-keygen -t ed25519 -C "your_email@example.com"
## it will create id_ed25519 (private) and id_ed25519.pub (public) key files in .ssh subfolder of your home directory
## copy the public key contents into your github accounts SSH Keys store as described here
## If connecting to only one github account configure your global or per repository git username and email
## On your github account, select the desired repository to connect to clone, select the SSH URL to use for that reposity
## it should be git@github.com:[youraccountname]/[yourrepo]
## with your SSH private key at the default location, you are ready to connect to your Github repo using SSH
## clone as follows