public inbox for bitcoindev@googlegroups.com
 help / color / mirror / Atom feed
From: Natanael <natanael.l@gmail.com>
To: Johnson Lau <jl2012@xbt.hk>
Cc: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Anti-transaction replay in a hardfork
Date: Wed, 25 Jan 2017 08:29:13 +0100	[thread overview]
Message-ID: <CAAt2M1945e4jpy_eoZBJnyztVXjFVTJAjMc-u45gMf4ich8sEQ@mail.gmail.com> (raw)
In-Reply-To: <45F53199-C8AC-4DD3-B746-D56F9F01946B@xbt.hk>

[-- Attachment #1: Type: text/plain, Size: 712 bytes --]

Den 25 jan. 2017 08:22 skrev "Johnson Lau" <jl2012@xbt.hk>:

Assuming Alice is paying Bob with an old style time-locked tx. Under your
proposal, after the hardfork, Bob is still able to confirm the time-locked
tx on both networks. To fulfil your new rules he just needs to send the
outputs to himself again (with different tx format). But as Bob gets all
the money on both forks, it is already a successful replay


Why would Alice be sitting on an old-style signed transaction with UTXO:s
none of which she controls (paying somebody else), with NO ability to
substitute the transaction for one where she DOES control an output,
leaving her unable to be the one spending the replay protecting child
transaction?

[-- Attachment #2: Type: text/html, Size: 1188 bytes --]

  reply	other threads:[~2017-01-25  7:29 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-24 14:33 [bitcoin-dev] Anti-transaction replay in a hardfork Johnson Lau
2017-01-24 18:52 ` Tom Harding
2017-01-25  4:03   ` Johnson Lau
2017-01-25 19:32     ` Tom Harding
2017-01-27 20:47       ` Johnson Lau
2017-01-27 22:11         ` Tom Harding
2017-01-25  1:22 ` Natanael
2017-01-25  7:05   ` Johnson Lau
2017-01-25  7:15     ` Natanael
2017-01-25  7:21       ` Johnson Lau
2017-01-25  7:29         ` Natanael [this message]
2017-01-25  7:42           ` Johnson Lau
2017-01-26  3:29 ` Matt Corallo
2017-01-26  7:03   ` Chris Priest
2017-01-26  7:14     ` Johnson Lau
2017-01-26  8:59       ` Chris Priest
2017-01-26  9:20         ` Johnson Lau
2017-01-26 10:55           ` Edmund Edgar
2017-01-26 15:58           ` Tom Harding
2017-01-26 17:21   ` Gavin Andresen
2017-01-26 17:41     ` Matt Corallo

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=CAAt2M1945e4jpy_eoZBJnyztVXjFVTJAjMc-u45gMf4ich8sEQ@mail.gmail.com \
    --to=natanael.l@gmail.com \
    --cc=bitcoin-dev@lists.linuxfoundation.org \
    --cc=jl2012@xbt.hk \
    /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