You can manage your Droplets using password-based logins, but we strongly recommend using SSH key pairs instead. SSH keys are more secure than passwords and can help you log in without having to remember long passwords.
To use SSH keys with your Droplets, you need to:
Add your SSH key to your Droplets. On DigitalOcean, you can upload your SSH public key to your account, which lets you add it to your Droplets at creation time. This lets you log in to your servers without a password while still remaining secure. You can also upload your keys manually after creation.
After you create and upload your keys, you can connect using them.