Author here, thank you for the comment. "flip again" was added at the last minute, after a night at a bar...where some beta testers were making real-world decisions using the app.
I didn't cover some details I find fascinating but which might have been overkill outside of HackerNews. For example, some assume the "one-way"ness of a hash function makes this protocol work. But that's not enough: we can't have Alice generating 2 different secrets with the same hash, even if Barb can't reverse the hash. What we also need is _collision resistance_, so Alice doesn't get to pick and choose what to expose in the final stage.
Lately, we've made much bigger, but less blogworthy, improvements to Keybase. It's faster, team on-boarding is getting better, and we'll be launching a very improved UX in the next month or so. I rarely get to stop and write about Keybase, so this was fun.
And for anyone looking to test, I'm `chris` on keybase. You can start a chat with me and do a `/flip cards 5 chris,yourname` and we'll see who gets a better poker hand. If you can deal yourself a flush or better on your first try I'll give a prize or something? Who knows. Anyway, we're having fun with it.
I didn't cover some details I find fascinating but which might have been overkill outside of HackerNews. For example, some assume the "one-way"ness of a hash function makes this protocol work. But that's not enough: we can't have Alice generating 2 different secrets with the same hash, even if Barb can't reverse the hash. What we also need is _collision resistance_, so Alice doesn't get to pick and choose what to expose in the final stage.
https://en.wikipedia.org/wiki/Collision_resistance
Lately, we've made much bigger, but less blogworthy, improvements to Keybase. It's faster, team on-boarding is getting better, and we'll be launching a very improved UX in the next month or so. I rarely get to stop and write about Keybase, so this was fun.
And for anyone looking to test, I'm `chris` on keybase. You can start a chat with me and do a `/flip cards 5 chris,yourname` and we'll see who gets a better poker hand. If you can deal yourself a flush or better on your first try I'll give a prize or something? Who knows. Anyway, we're having fun with it.