Date: Thu, 14 Mar 2019 07:55:20 +0000
To: Anthony Towns <aj@erisian.com.au>
From: ZmnSCPxj <ZmnSCPxj@protonmail.com>
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Cc: "bitcoin-dev@lists.linuxfoundation.org"
	<bitcoin-dev@lists.linuxfoundation.org>,
	"lightning-dev@lists.linuxfoundation.org"
	<lightning-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] [Lightning-dev] More thoughts on NOINPUT safety
Precedence: list

Good morning aj,

>
> Trying to maximise privacy there has the disadvantage that you have to
> do a new signature for every in-flight HTLC every time you update the
> state, which could be a lot of signatures for very active channels.

If I remember accurately this is already true for current Poon-Dryja channe=
ls in BOLT 1.0, so at least it is not a degradation of performance.
It does make this modified form of Decker-Russell-Osuntokun much less attra=
ctive for use with DLC as the Fulgurite effort would like, but the Fulgurit=
e effort already mitigates this by splitting a channel into two sub-channel=
s (one for high-activity LN payments, one for rare-activity DLC bets) anywa=
y.

Regards,
ZmnSCPxj