From: Peter Todd <pete@petertodd•org>
To: Steve Davis <steven.charles.davis@gmail•com>
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] SHA1 collisions make Git vulnerable to attakcs by third-parties, not just repo maintainers
Date: Sat, 25 Feb 2017 16:40:18 -0500 [thread overview]
Message-ID: <20170225214018.GA16524@savin.petertodd.org> (raw)
In-Reply-To: <4FE38F6A-0560-4989-9C53-7F8C94EA4C76@gmail.com>
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On Sat, Feb 25, 2017 at 03:34:33PM -0600, Steve Davis wrote:
> Yea, well. I don’t think it is ethical to post instructions without an associated remediation (BIP) if you don’t see the potential attack.
I can't agree with you at all there: we're still at the point where the
computational costs of such attacks limit their real-world impact, which is
exactly when you want the *maximum* exposure to what they are and what the
risks are, so that people develop mitigations.
Keeping details secret tends to keep the attacks out of public view, which
might be a good trade-off in a situation where the attacks are immediately
practical and the need to deploy a fix is well understood. But we're in the
exact opposite situation.
> I was rather hoping that we could have a fuller discussion of what the best practical response would be to such an issue?
Deploying segwit's 256-bit digests is a response that's already fully coded and
ready to deploy, with the one exception of a new address format. That address
format is being actively worked on, and could be deployed relatively quickly if
needed.
--
https://petertodd.org 'peter'[:-1]@petertodd.org
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next prev parent reply other threads:[~2017-02-25 21:40 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.22137.1487974823.31141.bitcoin-dev@lists.linuxfoundation.org>
2017-02-24 23:49 ` Steve Davis
2017-02-25 1:01 ` Peter Todd
2017-02-25 12:04 ` Steve Davis
2017-02-25 14:50 ` Leandro Coutinho
2017-02-25 16:10 ` Ethan Heilman
2017-02-25 17:45 ` Shin'ichiro Matsuo
2017-02-27 9:15 ` Henning Kopp
2017-02-25 18:19 ` Alice Wonder
2017-02-25 18:36 ` Ethan Heilman
2017-02-25 19:12 ` Peter Todd
2017-02-25 20:42 ` Watson Ladd
2017-02-25 20:57 ` Peter Todd
2017-02-25 20:53 ` Russell O'Connor
2017-02-25 21:04 ` Peter Todd
2017-02-25 21:21 ` Dave Scotese
2017-02-25 21:34 ` Steve Davis
2017-02-25 21:40 ` Peter Todd [this message]
2017-02-25 21:54 ` Steve Davis
2017-02-25 22:14 ` Pieter Wuille
2017-02-25 22:34 ` Ethan Heilman
2017-02-26 6:26 ` Steve Davis
2017-02-26 6:36 ` Pieter Wuille
2017-02-26 7:16 ` Steve Davis
[not found] ` <CAPg+sBirowtHqUT5GUJf9hmDEACKVX19HAon-rrz7GmO8OBsNg@mail.gmail.com>
2017-02-26 16:53 ` Steve Davis
2017-02-25 23:09 ` Leandro Coutinho
2017-02-23 18:14 Peter Todd
2017-02-23 21:28 ` Peter Todd
2017-02-23 23:57 ` Aymeric Vitte
2017-02-24 10:04 ` Tim Ruffing
2017-02-24 15:18 ` Aymeric Vitte
2017-02-24 16:30 ` Tim Ruffing
2017-02-24 17:29 ` Aymeric Vitte
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