6 ms·

Scuttlebutt (decentralized social network / protocol) has a tool specifically for this. It's called Dark Crystal. the basic summary is that your secreted gets s

Scuttlebutt (decentralized social network / protocol) has a tool specifically for this. It's called Dark Crystal. the basic summary is that your secreted gets securely divided among your friends. none of them can read it, but if you get enough of them to send their "shards" back to you you can rebuild the "crystal" and recover your secret. The web site isn't great but... https://darkcrystal.pw/ https://darkcrystal.pw/ and here, of course, is the Scuttlebutt site: https://www.scuttlebutt.nz/ https://www.scuttlebutt.nz/

Fnoord 7y ago
> Scuttlebutt (decentralized social network / protocol) has a tool specifically for this. It's called Dark Crystal. the basic summary is that your secreted gets securely divided among your friends. none of them can read it, but if you get enough of them to send their "shards" back to you you can rebuild the "crystal" and recover your secret. > The web site isn't great but... https://darkcrystal.pw/ https://darkcrystal.pw/ > and here, of course, is the Scuttlebutt site: https://www.scuttlebutt.nz/ https://www.scuttlebutt.nz/ Sounds like a variant of Shamir's Secret Sharing [1]. Here are some other variants of secret sharing mentioned [2]. [1] https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing [2] https://en.wikipedia.org/wiki/Secret_sharing https://en.wikipedia.org/wiki/Secret_sharing
ipsum2 7y ago
It was mentioned in the post: > without simply using a centralized service like Coinbase or needing secret shares from k of n friends.
- mrb 7y ago
  Yup, jrpt already mentioned it. This is called Shamir's Secret Sharing Scheme. There is a handy CLI tool implementing it: http://point-at-infinity.org/ssss/ http://point-at-infinity.org/ssss/ This is what's Satoshi's treasure hunt uses (have to find 400 of 1000(?) keys to win the 1 million USD prize)
  - emmelaich 7y ago
    Yep, installable on pretty much any Linux machine dnf (or apt) install ssss
notemaker 7y ago
> Dark Crystal Is there any white paper or something similar?

Fnoord 7y ago

> Scuttlebutt (decentralized social network / protocol) has a tool specifically for this. It's called Dark Crystal. the basic summary is that your secreted gets securely divided among your friends. none of them can read it, but if you get enough of them to send their "shards" back to you you can rebuild the "crystal" and recover your secret. > The web site isn't great but... https://darkcrystal.pw/ https://darkcrystal.pw/ > and here, of course, is the Scuttlebutt site: https://www.scuttlebutt.nz/ https://www.scuttlebutt.nz/ Sounds like a variant of Shamir's Secret Sharing [1]. Here are some other variants of secret sharing mentioned [2]. [1] https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing [2] https://en.wikipedia.org/wiki/Secret_sharing https://en.wikipedia.org/wiki/Secret_sharing

ipsum2 7y ago

It was mentioned in the post: > without simply using a centralized service like Coinbase or needing secret shares from k of n friends.

mrb 7y ago
Yup, jrpt already mentioned it. This is called Shamir's Secret Sharing Scheme. There is a handy CLI tool implementing it: http://point-at-infinity.org/ssss/ http://point-at-infinity.org/ssss/ This is what's Satoshi's treasure hunt uses (have to find 400 of 1000(?) keys to win the 1 million USD prize)
- emmelaich 7y ago
  Yep, installable on pretty much any Linux machine dnf (or apt) install ssss

notemaker 7y ago

> Dark Crystal Is there any white paper or something similar?