Why Nostr? What is Njump?
2023-06-07 15:14:38
in reply to

Natanael [ARCHIVE] on Nostr: 📅 Original date posted:2014-03-08 📝 Original message:You can always use a ...

📅 Original date posted:2014-03-08
📝 Original message:You can always use a secure multiparty computation algorithm to do it.

https://en.wikipedia.org/wiki/Secure_multi-party_computation

But those aren't the fastest algorithms in the world, and usually both
participants needs to be online at the same time. I guess most people would
prefer a two-step algorithm that can be performed asynchronously.

- Sent from my phone
Den 8 mar 2014 18:44 skrev "Adam Back" <adam at cypherspace.org>:

> Also the other limitation for ECDSA is that there is no known protocol to
> create a signture with a+b (where keys P=aG, Q=bG, R=P+Q=(a+b)G). without
> either a sending its private key to b or viceversa (or both to a third
> party).
>
> With Schnorr sigs you can do it, but the k^-1 term in ECDSA makes a
> (secure)
> direct multiparty signature quite difficult.
>
> ps probably only 1 party needs to hash their key
>
> P=aG
> H(P) ->
>
> <- Q=bG
>
> P ->
>
> Adam
>
> On Sat, Mar 08, 2014 at 12:37:30PM +0200, Joel Kaartinen wrote:
> > If both parties insist on seeing a hash of the other party's public key
> > before they'll show their own public key, they can be sure that the
> > public key is not chosen based on the public key they themselves
> > presented.
>
>
> ------------------------------------------------------------------------------
> Subversion Kills Productivity. Get off Subversion & Make the Move to
> Perforce.
> With Perforce, you get hassle-free workflows. Merge that actually works.
> Faster operations. Version large binaries. Built-in WAN optimization and
> the
> freedom to use Git, Perforce or both. Make the move to Perforce.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
> _______________________________________________
> Bitcoin-development mailing list
> Bitcoin-development at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20140308/7bff5314/attachment.html>;
Author Public Key
npub1798ncudyucap9jzzujjsgufx8tdykm8auzfledjcs6f6wf4ekqvq8lpmjt