From: Gregory Maxwell <greg@xiph.org>
To: Anthony Towns <aj@erisian.com.au>
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Taproot: Privacy preserving switchable scripting
Date: Tue, 23 Jan 2018 22:45:06 +0000 [thread overview]
Message-ID: <CAAS2fgTNcCB2mfvCBhC_AhgxX=g8feYguGHN_VPWW0EoOOxMyA@mail.gmail.com> (raw)
In-Reply-To: <20180123222229.GA3801@erisian.com.au>
On Tue, Jan 23, 2018 at 10:22 PM, Anthony Towns <aj@erisian.com.au> wrote:
> Hmm, at least people can choose not to reuse addresses currently --
> if everyone were using taproot and that didn't involve hashing the key,
Can you show me a model of quantum computation that is conjectured to
be able to solve the discrete log problem but which would take longer
than fractions of a second to do so? Quantum computation has to occur
within the coherence lifetime of the system.
> way for individuals to hedge against quantum attacks in case they're ever feasible, at least that I can see (well, without moving their funds out of bitcoin anyway)?
By using scriptpubkeys with actual security against quantum computers
instead of snake-oil.
> (It seems like using the point at infinity wouldn't work because
Indeed, that doesn't work.
> that when quantum attacks start approaching feasibility. If funds are
> being held in reused addresses over the long term, that would be more
They are. But I don't believe that is relevant; the attacker would
simply steal the coins on spend.
next prev parent reply other threads:[~2018-01-23 22:45 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-23 0:30 [bitcoin-dev] Taproot: Privacy preserving switchable scripting Gregory Maxwell
2018-01-23 1:55 ` Chris Belcher
2018-01-23 2:51 ` Matt Corallo
2018-01-23 14:39 ` Mark Friedenbach
2018-01-23 21:23 ` Matt Corallo
2018-01-23 21:38 ` Gregory Maxwell
2018-01-23 6:44 ` Anthony Towns
2018-01-23 13:15 ` Gregory Maxwell
2018-01-23 22:22 ` Anthony Towns
2018-01-23 22:45 ` Gregory Maxwell [this message]
2018-01-24 1:52 ` Andrew Poelstra
2018-01-24 9:28 ` Tim Ruffing
2018-01-24 12:51 ` Natanael
2018-01-24 15:38 ` Tim Ruffing
2018-01-24 18:51 ` Natanael
2018-01-24 23:22 ` Tim Ruffing
2018-01-25 0:09 ` Natanael
2018-01-26 13:14 ` [bitcoin-dev] Recovery of old UTXOs in a post-quantum world Tim Ruffing
2018-01-27 17:07 ` [bitcoin-dev] Taproot: Privacy preserving switchable scripting Russell O'Connor
2018-01-27 17:23 ` Matt Corallo
2018-01-23 15:43 ` Greg Sanders
2018-01-26 21:34 ` Gregory Maxwell
2018-07-13 1:51 ` [bitcoin-dev] Generalised taproot Anthony Towns
2018-10-24 2:22 ` Pieter Wuille
2018-02-05 9:27 ` [bitcoin-dev] Taproot: Privacy preserving switchable scripting ZmnSCPxj
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