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From: Ethan Heilman <eth3rs@gmail.com>
To: Pieter Wuille <pieter.wuille@gmail.com>,
	 Bitcoin Protocol Discussion
	<bitcoin-dev@lists.linuxfoundation.org>
Cc: Steve Davis <steven.charles.davis@gmail.com>
Subject: Re: [bitcoin-dev] SHA1 collisions make Git vulnerable to attakcs by third-parties, not just repo maintainers
Date: Sat, 25 Feb 2017 17:34:38 -0500	[thread overview]
Message-ID: <CAEM=y+XEXuf+BPOH0h=Hn3_9PeL4Dv9G3ySN6fe5zH7bJVkSDA@mail.gmail.com> (raw)
In-Reply-To: <CAPg+sBhZ1UqOLqz_PVjjrE8Cbte_Y160Gq7P7EWf6cRKjMcDEQ@mail.gmail.com>

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I strongly encourage Bitcoin to move from 80-bit collision resistance
(RIPEMD-160) to 128-bit collision resistance (SHA-256).

On Sat, Feb 25, 2017 at 5:14 PM, Pieter Wuille via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:

>
>
> On Feb 25, 2017 14:09, "Steve Davis via bitcoin-dev" <bitcoin-dev@lists.
> linuxfoundation.org> wrote:
>
> Hi Peter,
>
>
> I really, really don’t want to get into it but segwit has many aspects
> that are less appealing, not least of which being the amount of time it
> would take to reach the critical mass.
>
> Surely there's a number of alternative approaches which could be explored,
> even if only to make a fair assessment of a best response?
>
>
> Any alternative to move us away from RIPEMD160 would require:
> * A drafting of a softfork proposal, implementation, testing, review.
> * A new address format
> * Miners accepting the new consensus rules
> * Wallets adopting the new address format, both on the sender side and
> receiver side (which requires new signatures).
>
> I.e., exactly the same as segwit, for which most of these are already
> done. And it would still only apply to wallets adopting it.
>
> --
> Pieter
>
>
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
>

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  reply	other threads:[~2017-02-25 22:35 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 ` [bitcoin-dev] SHA1 collisions make Git vulnerable to attakcs by third-parties, not just repo maintainers 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
2017-02-25 21:54                       ` Steve Davis
2017-02-25 22:14                         ` Pieter Wuille
2017-02-25 22:34                           ` Ethan Heilman [this message]
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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