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Date: Wed, 21 Jan 2015 11:10:53 -0800
From: Peter Todd <pete@petertodd.org>
To: Pieter Wuille <pieter.wuille@gmail.com>,
	Gregory Maxwell <gmaxwell@gmail.com>
Message-ID: <20150121191053.GB8403@muck>
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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] [softfork proposal] Strict DER signatures
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On Tue, Jan 20, 2015 at 07:35:49PM -0500, Pieter Wuille wrote:

I read this and it's boring, now that all my objections have been met. :)

I'll try get a chance to actually test/review this in detail; in SF for
the next three weeks with some ugly deadlines and a slow laptop. :(

> Hello everyone,
>=20
> We've been aware of the risk of depending on OpenSSL for consensus
> rules for a while, and were trying to get rid of this as part of BIP
> 62 (malleability protection), which was however postponed due to
> unforeseen complexities. The recent evens (see the thread titled
> "OpenSSL 1.0.0p / 1.0.1k incompatible, causes blockchain rejection."
> on this mailing list) have made it clear that the problem is very
> real, however, and I would prefer to have a fundamental solution for
> it sooner rather than later.
>=20
> I therefore propose a softfork to make non-DER signatures illegal
> (they've been non-standard since v0.8.0). A draft BIP text can be
> found on:
>=20
>     https://gist.github.com/sipa/5d12c343746dad376c80
>=20
> The document includes motivation and specification. In addition, an
> implementation (including unit tests derived from the BIP text) can be
> found on:
>=20
>     https://github.com/sipa/bitcoin/commit/bipstrictder
>=20
> Comments/criticisms are very welcome, but I'd prefer keeping the
> discussion here on the mailinglist (which is more accessible than on
> the gist).

--=20
'peter'[:-1]@petertodd.org
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