public inbox for bitcoindev@googlegroups.com
 help / color / mirror / Atom feed
From: jeremy <jeremy.l.rubin@gmail•com>
To: Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
Subject: [bitcoindev] BIP-119.2: Extensions for Lightning Symmetry
Date: Mon, 6 May 2024 11:44:03 -0700 (PDT)	[thread overview]
Message-ID: <35cba1cd-eb67-48d1-9615-e36f2e78d051n@googlegroups.com> (raw)


[-- Attachment #1.1: Type: text/plain, Size: 984 bytes --]

This adds 3 new modes:

- 20 Byte Hash160 CTV
- 21 and 33 Byte CTV where last byte indicates second-to-top stack element 
to be included in hash

The extension data is beneficial to Lightning Symmetry applications as they 
need data inscribed in a block so that clients may delete old channel 
states.

One question to particularly address is if Hash160 is both preimage and 
collision resistant in this context, or if 20 bytes will be a security 
issue for lightning developers (I'm aware they use Hash160 for other 
applications)

see draft BIP here: https://github.com/bitcoin/bips/pull/1587

-- 
You received this message because you are subscribed to the Google Groups "Bitcoin Development Mailing List" group.
To unsubscribe from this group and stop receiving emails from it, send an email to bitcoindev+unsubscribe@googlegroups•com.
To view this discussion on the web visit https://groups.google.com/d/msgid/bitcoindev/35cba1cd-eb67-48d1-9615-e36f2e78d051n%40googlegroups.com.

[-- Attachment #1.2: Type: text/html, Size: 1361 bytes --]

                 reply	other threads:[~2024-05-06 19:25 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=35cba1cd-eb67-48d1-9615-e36f2e78d051n@googlegroups.com \
    --to=jeremy.l.rubin@gmail$(echo .)com \
    --cc=bitcoindev@googlegroups.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox