public inbox for bitcoindev@googlegroups.com
 help / color / mirror / Atom feed
From: Kristov Atlas <kristovatlas.lists@gmail.com>
To: Bitcoin development mailing list
	<bitcoin-development@lists.sourceforge.net>
Subject: [Bitcoin-development] Lexicographical Indexing of Transaction Inputs and Outputs
Date: Fri, 5 Jun 2015 20:12:08 -0400	[thread overview]
Message-ID: <CAGH37SK0k1YUvadetyHcBGjzW+OHNFRmRwqsUDeHBGejUacigQ@mail.gmail.com> (raw)

[-- Attachment #1: Type: text/plain, Size: 1238 bytes --]

Hello all,

I have written a draft of a BIP to standardize the sorting of tx inputs and
outputs for privacy and security reasons. A few colleagues have reviewed
this and provided feedback privately, but now it's ready for feedback from
a wider audience.

If there is positive sentiment about the proposal after feedback is
integrated, I aim for a bip number to be assigned and have it accepted into
https://github.com/bitcoin/bips

Link:
https://github.com/kristovatlas/rfc/blob/master/bips/bip-li01.mediawiki

For your convenience, here's the abstract:

"Currently there is no standard for bitcoin wallet clients when ordering
transaction inputs and outputs. As a result, wallet clients often have a
discernible blockchain fingerprint, and can leak private information about
their users. By contrast, a standard for non-deterministic sorting could be
difficult to audit. This document proposes deterministic lexicographical
sorting, using hashes of previous transactions and output indices to sort
transaction inputs, as well as value and locking scripts to sort
transaction outputs."

Thanks,

Kristov Atlas
Open Bitcoin Privacy Project Contributor, Blockchain.info Security
Engineer, etc.
Twitter: @kristovatlas
Blog: kristovatlas.com

[-- Attachment #2: Type: text/html, Size: 1592 bytes --]

             reply	other threads:[~2015-06-06  0:12 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-06  0:12 Kristov Atlas [this message]
2015-06-06  3:20 ` [Bitcoin-development] Lexicographical Indexing of Transaction Inputs and Outputs Stephen
2015-06-06  6:24   ` Kristov Atlas
2015-06-07  0:06     ` Kristov Atlas
2015-06-07  2:35       ` Peter Todd
2015-06-08 22:53         ` Kristov Atlas
2015-06-08 22:55           ` Kristov Atlas
2015-06-09 20:14           ` Peter Todd
2015-06-10 23:36             ` Kristov Atlas
2015-06-12 21:36             ` Kristov Atlas
2015-06-14 16:29               ` Kristov Atlas
2015-06-15 21:42 ` Rusty Russell

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=CAGH37SK0k1YUvadetyHcBGjzW+OHNFRmRwqsUDeHBGejUacigQ@mail.gmail.com \
    --to=kristovatlas.lists@gmail.com \
    --cc=bitcoin-development@lists.sourceforge.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
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