What does this wormhole exactly do? The docs just say it's a secure connection, but how exactly do you interact with it?
it's https://github.com/warner/magic-wormhole but see in particular https://github.com/warner/magic-wormhole/issues/107 . It uses a static wordlist and by default uses a shared pool of rendezvous servers. The (an?) author addresses this here https://magic-wormhole.readthedocs.io/en/latest/attacks.html but I think characterizes the attack poorly: it's not important that it's low-probability that an attacker can pull o…
If you are concerned about guessability you can use more than 2 words. You can also use strings that are not in the default word list (the only thing the default word list gives you is tab completions).
edit: Also the "wormhole" spec that keys.pub has is not related to magic-wormhole.