https://www.openssh.com/legacy.html https://www.openssh.com/legacy.html - Legacy algorithms in OpenSSH, which explains a little what they do. Then there is also

https://www.openssh.com/legacy.html https://www.openssh.com/legacy.html - Legacy algorithms in OpenSSH, which explains a little what they do. Then there is also your Identity key that you authenticate yourself with, which is placed in the servers authorized_keys.