[Bitcoin-development] [RFC] [BIP proposal] Dealing with malleability

Pieter Wuille pieter.wuille at gmail.com
Thu Feb 20 15:11:27 UTC 2014

I hereby request a BIP number.

On Thu, Feb 20, 2014 at 3:58 PM, Gavin Andresen <gavinandresen at gmail.com> wrote:
> Great, I'm hearing rough consensus to proceed with Pieter's plan.
> RE: far from confident on malleability routes:  I'm reasonably confident
> that we can squash malleability for IsStandard, SIGHASH_ALL transactions. A
> proper proof of DSA signature un-malleability (or an lower bound for how
> much work it would be to create a valid doppleganger signature) would be
> great, but I don't think it is necessary to proceed.
> On Thu, Feb 20, 2014 at 9:36 AM, Gregory Maxwell <gmaxwell at gmail.com> wrote:
>> On Thu, Feb 20, 2014 at 6:29 AM, Gavin Andresen <gavinandresen at gmail.com>
>> wrote:
>> > I think we should get Pieter's proposal done and implemented quickly. I
>> > agree with Mike, it doesn't have to take a long time for the core
>> > network to
>> > fully support this.
>> >
>> > Getting wallets to start generating transaction.version=3 might take
>> > years,
>> > but that is OK.
>> Sure I'm all for doing what Pieter suggested-- it's basically the plan
>> we've been executing for some time already but with the version check
>> to make it sane to complete.
>> My reserved sounding comments were relative to the proposals to do
>> things with nversion=1 transactions, frankly I think thats completely
>> insane. Though while we're on the subject of reservations, I am far
>> from confident that we've uncovered all the possible malleability
>> routes-- that list gained a new, never before discussed entry, when
>> Pieter was writing it a couple weeks ago.  We also have no proof of
>> the absence of further algebraic malleability in DSA (though I think
>> its somewhat unlikely, a solid proof of it has been somewhat elusive).
> --
> --
> Gavin Andresen
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