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Cryptographic coin flipping, now in Keybase

keybase.io

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Re: Cryptographic coin flipping, now in Keybase

#31

Post by tosh »

malgorithms wrote: post #27

I'd be curious if people on HN would want a zero knowledge survey and voting system inside Keybase, and if so, what would it look like? The background: we talk about it sometimes as a solution to a real problem: in certain teams and workplaces, people can be afraid to give honest feedback (who dares to submit an "anonymous" survey to HR?), but Keybase may be in a unique position to let people in a group give written…

I think this is a great idea.

Further: it will remove the friction of doing anonymous surveys. I would do them way more often for various things (similar to the coin flips) if they were easy to do.

Re: Cryptographic coin flipping, now in Keybase

#32

Post by tosh »

mr_puzzled wrote: post #10

Has Keybase lost it's way? I thought they were onto something cool and maybe could explore an enterprise play with private chats, filesharing and git for teams or something like that. Basically make money by selling to teams. But Keybase seems to have stagnated, existing apps are still quite buggy, not enough new developments recently. The facepalm moment for me was when they announced they were supported by the Stel…

In a sense keybase is one of the most important projects built right now (that I can think of).

It covers aspects (think pareto principle) of email, linkedin, slack, github, dropbox, whatsapp, online banking and probably more core use cases that I don’t have on top of my mind.

That is now, today. With a decent user experience that keeps getting better (see recent improvements @ user profiles).

=> all of that end-to-end encrypted and delivered in a way that it is accessible and usable and fun with a long-tail of users in mind.

[I have no idea what an equivalent would be right now, not even as combination of multiple separate projects. Think about that.]

Re: Cryptographic coin flipping, now in Keybase

#33

Post by bluesign »

kannanvijayan wrote: post #8

There's a slight variation on this that I had pondered for designing a distributed election algorithm. I'm sure the idea is not novel, but it would be nice to know what work has been done on it. The goal is to fairly select some candidate from a set of candidates. Each candidate `Ci` generates a UUID `Ui`. The hash of their UUID `hash(Ui)` is published by each candidate. Once all hashes have been collected, each cand…

It is very hard to handle candidate drop on this scenario.

Re: Cryptographic coin flipping, now in Keybase

#34

Post by dmitriid »

tosh wrote: post #31
malgorithms wrote: post #27

I'd be curious if people on HN would want a zero knowledge survey and voting system inside Keybase, and if so, what would it look like? The background: we talk about it sometimes as a solution to a real problem: in certain teams and workplaces, people can be afraid to give honest feedback (who dares to submit an "anonymous" survey to HR?), but Keybase may be in a unique position to let people in a group give written…

I think this is a great idea. Further: it will remove the friction of doing anonymous surveys. I would do them way more often for various things (similar to the coin flips) if they were easy to do.

Hiw do you make sure that anonymous votes are coming from employees and from some third-party?

Re: Cryptographic coin flipping, now in Keybase

#35

Post by dmitriid »

tosh wrote: post #32
mr_puzzled wrote: post #10

Has Keybase lost it's way? I thought they were onto something cool and maybe could explore an enterprise play with private chats, filesharing and git for teams or something like that. Basically make money by selling to teams. But Keybase seems to have stagnated, existing apps are still quite buggy, not enough new developments recently. The facepalm moment for me was when they announced they were supported by the Stel…

In a sense keybase is one of the most important projects built right now (that I can think of). It covers aspects (think pareto principle) of email, linkedin, slack, github, dropbox, whatsapp, online banking and probably more core use cases that I don’t have on top of my mind. That is now, today. With a decent user experience that keeps getting better (see recent improvements @ user profiles). => all of that end-to-e…

> It covers aspects (think pareto principle) of email, linkedin, slack, github, dropbox, whatsapp, online banking and probably more core use cases that I don’t have on top of my mind.

Soooo... A centralized solution for everything? ;)

Re: Cryptographic coin flipping, now in Keybase

#36

Post by garmaine »

tuxxy wrote: post #18

I don't really understand why they use HMAC-SHA256. Why do many schemes decide to do this needlessly when they can use SHA3 or Blake2b?

Why is it needless? SHA3 was designed to complement, not replace SHA2. Blake2* are preferred by some but they are not the national standard and have their own quirks.

Re: Cryptographic coin flipping, now in Keybase

#38

Post by jstanley »

dmitriid wrote: post #34
tosh wrote: post #31

Earlier quoted context omitted.

I think this is a great idea. Further: it will remove the friction of doing anonymous surveys. I would do them way more often for various things (similar to the coin flips) if they were easy to do.

Hiw do you make sure that anonymous votes are coming from employees and from some third-party?

A ring signature would do. You can be sure that the signature came from one of a set of public keys, without knowing which particular private key was used.

Re: Cryptographic coin flipping, now in Keybase

#39

Post by maxtaco »

jstanley wrote: post #38
dmitriid wrote: post #34

Earlier quoted context omitted.

Hiw do you make sure that anonymous votes are coming from employees and from some third-party?

A ring signature would do. You can be sure that the signature came from one of a set of public keys, without knowing which particular private key was used.

We are still very early stages here, but we really like the Anonize system (https://eprint.iacr.org/2015/681.pdf)
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