Logging in using ppk file that contains public key
I just received a PPK file that has both public and private key to use to authenticate when logging in to the droplet using SSH.
I'm having problems figuring out how to use the key file given to me.
I've logged in to our account and went to the 'SSH Keys' section on the left menu. When I click on 'Add SSH Key' I put the public key as per instructions I read online and gave it a random name as well in the respective fields... after I hit create SSH key it gives me an error message saying "Key invalid type, we support 'ssh-rsa', 'ssh-dss', 'ecdsa-sha2-nistp256', 'ecdsa-sha2-nistp384', or 'ecdsa-sha2-nistp521'".
Can anyone tell me what I'm doing wrong and how I can fix it please. Thanks