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Date: Tue, 5 Jun 2018 20:43:26 -0400
From: Peter Todd <pete@petertodd.org>
To: Chris Stewart <chris@suredbits.com>,
Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Message-ID: <20180606004326.hpd3tmkjhdzclf2g@petertodd.org>
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Subject: Re: [bitcoin-dev] Disallow insecure use of SIGHASH_SINGLE
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On Tue, Jun 05, 2018 at 07:17:52PM -0500, Chris Stewart via bitcoin-dev wro=
te:
> Do you have any thoughts on expanding this to SIGHASH_NONE? Perhaps someo=
ne
> else on the dev list can enlighten me, but is there a current use case for
> SIGHASH_NONE that would suffer from it being non standard?
SIGHASH_NONE is important as it's the only way that a multisig signers can
relinquish the need for them to sign without giving up the private key.
FWIW the SIGHASH_SINGLE bug can be used in similar ways too.
--=20
https://petertodd.org 'peter'[:-1]@petertodd.org
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