How to create a key for a SSH/SFTP connection

Linux/macOS

1. Run the ssh-keygen -t rsa command in the terminal
2. Confirm the location.
3. Choose a password for the key.
4. Confirm the password.

Two files are created in choosen location /XXXXX/.ssh:
id_rsa (private key)
id_rsa.pub (public key)

The key is created.

Windows

1. Download the PuTTy program: https://www.putty.org/
2. Run PuTTygen.
3. Click on Generate.
4. Move the mouse cursor until the green field is filled