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Date: Tue, 16 Aug 2016 19:30:07 -0700
From: Peter Todd <pete@petertodd.org>
To: "Russell O'Connor" <roconnor@blockstream.io>,
Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
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Subject: Re: [bitcoin-dev] New BIP: Dealing with OP_IF and OP_NOTIF
malleability in P2WSH
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On Tue, Aug 16, 2016 at 08:27:54PM -0400, Russell O'Connor via bitcoin-dev =
wrote:
> Okay.
>=20
> I'm not really opposed to this BIP, but I am worried that fighting script
> malleability is a battle that can never be won; even leaving one avenue of
> malleability open is probably just as bad as having many avenues of
> malleability, so it just doesn't seem worthwhile to me.
At least some types of malleability are less harmful than others: changing a
few bits with some weird ECC transformation isn't as likely to cause proble=
ms
as being able to append arbitrary data to a transaction's input script. And=
of
course, we do prevent the latter with the cleanstack rule - consensus enfor=
ced
in segwit.
--=20
https://petertodd.org 'peter'[:-1]@petertodd.org
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