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From: Peter Todd <pete@petertodd.org>
To: Chris Stewart <chris@suredbits.com>,
	Bitcoin Protocol Discussion
	<bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Disallow insecure use of SIGHASH_SINGLE
Date: Tue, 5 Jun 2018 20:43:26 -0400	[thread overview]
Message-ID: <20180606004326.hpd3tmkjhdzclf2g@petertodd.org> (raw)
In-Reply-To: <CAGL6+mH3ah_e-+e0=ce0-HmkaqU1YzoGNS5JXCXDbojxpVvX8Q@mail.gmail.com>

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On Tue, Jun 05, 2018 at 07:17:52PM -0500, Chris Stewart via bitcoin-dev wrote:
> Do you have any thoughts on expanding this to SIGHASH_NONE? Perhaps someone
> 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.

-- 
https://petertodd.org 'peter'[:-1]@petertodd.org

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  reply	other threads:[~2018-06-06  0:43 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-31 18:53 [bitcoin-dev] Disallow insecure use of SIGHASH_SINGLE Johnson Lau
2018-06-06  0:17 ` Chris Stewart
2018-06-06  0:43   ` Peter Todd [this message]
2018-06-06  0:49 ` Peter Todd

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