Subject: Re: [bitcoin-dev] [Lightning-dev] More thoughts on NOINPUT safety

From: ZmnSCPxj <[email-masked]>
Date: Thu, 14 Mar 2019 07:55:20 +0000

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 channels 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 attractive for use with DLC as the Fulgurite effort would like, but the Fulgurite effort already mitigates this by splitting a channel into two sub-channels (one for high-activity LN payments, one for rare-activity DLC bets) anyway.

Regards,
ZmnSCPxj