Date: Wed, 21 Jan 2015 12:27:37 -0800
From: Andrew Poelstra <apoelstra@wpsoftware.net>
To: Pieter Wuille <pieter.wuille@gmail.com>
Message-ID: <20150121202736.GZ29138@shavo.vs.shawcable.net>
References: <CAPg+sBhk7F2OHT64i2LNSjv8DR5tD3RJkLJGzPGZW8OPQTCjQw@mail.gmail.com>
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User-Agent: Mutt/1.5.22+19 (8f62001989cc) (2013-10-16)
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] [softfork proposal] Strict DER signatures
Precedence: list


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I've read this and it looks A-OK to me.

Andrew


On Tue, Jan 20, 2015 at 07:35:49PM -0500, Pieter Wuille wrote:
> 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
> --=20
> Pieter
>=20
> -------------------------------------------------------------------------=
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>=20

--=20
Andrew Poelstra
Mathematics Department, University of Texas at Austin
Email: apoelstra at wpsoftware.net
Web:   http://www.wpsoftware.net/andrew

"If they had taught a class on how to be the kind of citizen Dick Cheney
 worries about, I would have finished high school."   --Edward Snowden


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