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From: Rusty Russell <rusty@rustcorp.com.au>
To: DING FENG <dingfeng12345@gmail.com>, Luke Dashjr <luke@dashjr.org>
Cc: Bitcoin Protocol Discussion
	<bitcoin-dev@lists.linuxfoundation.org>,
	lightning-dev@lists.linuxfoundation.org
Subject: Re: [bitcoin-dev] [Lightning-dev]  BIP sighash_noinput
Date: Fri, 13 Jul 2018 09:34:14 +0930	[thread overview]
Message-ID: <878t6gxapt.fsf@rustcorp.com.au> (raw)
In-Reply-To: <CAK_c0Xo0G9-YiOGZK_8WsYNkzjQRaH+u7XOUAozKosggXeXTNg@mail.gmail.com>

DING FENG <dingfeng12345@gmail.com> writes:
> Hi,
>
> I'm a junior developer and a bitcoin user.
> And I have read this thread carefully.
>
> I'm very worried about "SIGHASH_NOINPUT".
>
> Because "SIGHASH_NOINPUT" looks will be widely used, and it makes reuse
> address more dangerous.

No.

A wallet should *never* create a SIGHASH_NOINPUT to spend its own UTXOs.
SIGHASH_NOINPUT is useful for smart contracts which have unique
conditions, such as a pair of peers rotating keys according to an agreed
schedule (eg. lightning).

Cheers,
Rusty.


  parent reply	other threads:[~2018-07-13  0:05 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-30 16:29 [bitcoin-dev] BIP sighash_noinput Christian Decker
2018-04-30 18:25 ` Dario Sneidermanis
2018-05-01 16:58 ` Russell O'Connor
2018-05-01 17:32   ` Christian Decker
2018-05-04  9:15     ` ZmnSCPxj
2018-05-04 11:09       ` Christian Decker
2018-05-04 14:25         ` ZmnSCPxj
2018-09-26  9:36   ` Jonas Nick
2018-09-26 19:45     ` Johnson Lau
2018-09-26 20:40       ` Jonas Nick
2018-05-07 19:40 ` Christian Decker
2018-05-07 20:51   ` Bram Cohen
2018-07-03  6:58     ` [bitcoin-dev] [Lightning-dev] " ZmnSCPxj
2018-07-03 11:54       ` William Casarin
2018-05-08 14:40   ` [bitcoin-dev] " Anthony Towns
2018-05-09 23:01     ` Olaoluwa Osuntokun
2018-05-09 23:04     ` Rusty Russell
2018-05-14  9:23       ` [bitcoin-dev] [Lightning-dev] " Anthony Towns
2018-05-15 14:28         ` Christian Decker
2018-05-07 23:47 ` [bitcoin-dev] " Olaoluwa Osuntokun
2018-05-10 14:12   ` Christian Decker
2018-07-02 18:11 ` Gregory Maxwell
2018-07-03  4:56   ` Rusty Russell
2018-07-03  5:21     ` Peter Todd
2018-07-03 23:45       ` Gregory Maxwell
2018-07-09  9:41         ` Peter Todd
2018-07-03 12:05   ` Christian Decker
2018-07-03 12:13   ` [bitcoin-dev] [Lightning-dev] " Luke Dashjr
2018-07-04 18:08     ` fred savage
2018-07-05  8:18       ` vv01f
     [not found]     ` <CAK_c0Xo0G9-YiOGZK_8WsYNkzjQRaH+u7XOUAozKosggXeXTNg@mail.gmail.com>
2018-07-11  7:43       ` ZmnSCPxj
2018-07-13  0:04       ` Rusty Russell [this message]
2018-07-13  9:50         ` fred savage
2018-07-13 11:07           ` Christian Decker

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