This is a demo/test page for generating FIDO keys and signatures in SSH formats. The page initially displays a form to generate a FIDO key and convert it to a SSH public key.
Once a key has been generated, an additional form will be displayed to allow signing of data using the just-generated key. The data may be signed as either a raw SSH signature or wrapped in a sshsig message (the latter is easier to test using command-line tools.
Lots of debugging is printed along the way.