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From: Matt Corallo <bitcoin-list@bluematt.me>
To: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] [BIP 15] Aliases
Date: Thu, 15 Dec 2011 21:48:17 -0500	[thread overview]
Message-ID: <1324003697.3719.5.camel@BMThinkPad.lan.bluematt.me> (raw)
In-Reply-To: <1323979147.27319.140661012141129@webmail.messagingengine.com>

On Thu, 2011-12-15 at 13:59 -0600, theymos wrote:
> Bitcoin already has code and a protocol for transactions to IP
> addresses. Why not reuse that for dynamic address lookup? Just a few
> changes are necessary to enable complete user@server.com handling:
I'm not against this, but I think its way overcomplicated when compared
to the DNS or HTTPS methods.
> - Extend the protocol so that "reply" messages can be signed by a fixed
>   public key
> - Extend "checkorder" messages so they can specify an account to
>   send BTC to. Or standardize on how to put the account into the
>   message field.
OK, not too debatable, but considering how terrible bitcoind's account
handling is, the second might not be easy to get right...
> - Enable DNS lookups for IP transactions. The DNS-only proposals could
>   also be used here to avoid having to use the IP transaction protocol
>   sometimes. The public key for signing "reply" messages can be gotten
>   from TXT records. This will be safe with DNSSEC and Namecoin. With
>   plain DNS Bitcoin could take a SSH-like approach and ask the user to
>   verify the public key the first time it is used, remembering it later.
This is where I think this method becomes way overcomplicated.  Not only
do you have to update the IP-Transaction code, but now you have to
implement the full DNS System that is the other option as well.  Note
that to make this secure, we have to have a full DNSSEC-capable resolver
built-into bitcoind (there are libs, but it has to happen).  Yes you can
ask the user "does this fingerprint look right to you? Y/N" but that
always opens you up to a ton of users getting screwed out of coins and I
don't think it should be enabled, except in bitcoind, and since the main
target of this whole alias system is bitcoin-qt users, well...

Matt




  parent reply	other threads:[~2011-12-16  2:48 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-12 22:21 [Bitcoin-development] [BIP 15] Aliases Amir Taaki
2011-12-12 22:25 ` Amir Taaki
2011-12-12 22:32 ` Luke-Jr
2011-12-13  4:38 ` theymos
2011-12-13  7:41   ` Jorge Timón
2011-12-15 19:59 ` theymos
2011-12-15 23:56   ` Amir Taaki
2011-12-16  2:37   ` Kyle Henderson
2011-12-16  4:32     ` Walter Stanish
2011-12-16  2:48   ` Matt Corallo [this message]
2011-12-16 17:23   ` Khalahan
2011-12-16 19:54     ` slush
2011-12-16 20:10       ` Amir Taaki
2011-12-16 20:14         ` Harald Schilly
2011-12-16 21:52       ` Khalahan
2011-12-16 22:05         ` Rick Wesson
2011-12-18 21:05           ` Jorge Timón
2011-12-18 21:18             ` Jordan Mack
2011-12-18 21:44             ` Luke-Jr
2011-12-18 23:58               ` slush
2011-12-19  1:13                 ` Luke-Jr
2011-12-19  1:14                 ` Pieter Wuille
2011-12-19  1:43                   ` Luke-Jr
2011-12-19  1:44                   ` slush
2011-12-19  7:56                     ` Jorge Timón
2011-12-19 11:44                       ` Andy Parkins
2011-12-19 14:46                         ` solar
2011-12-19 15:35                           ` Rick Wesson
2011-12-19 16:35                         ` Luke-Jr
2011-12-19 17:13                           ` solar
2011-12-19 16:30                       ` Luke-Jr
2011-12-19 17:04                         ` Jordan Mack
2011-12-19 17:09                           ` slush
2011-12-19 18:13                             ` Jordan Mack
2011-12-19 18:17                               ` slush
2011-12-19 18:50                                 ` Jorge Timón
2011-12-19 20:03                                   ` Jordan Mack
2011-12-19 19:22                                 ` Jordan Mack
2011-12-19 18:15                           ` Luke-Jr
2011-12-19 18:52                             ` Jordan Mack
2011-12-19 19:16                               ` Luke-Jr
2011-12-19 20:03                                 ` Jordan Mack
2011-12-16  8:35 ` Pieter Wuille
2011-12-16 16:03   ` Rick Wesson
2011-12-16 16:17     ` Pieter Wuille
2011-12-16 16:21       ` Rick Wesson
2011-12-16 17:21     ` Andy Parkins
2011-12-12 23:16 Zell Faze
2011-12-12 23:37 ` Jorge Timón
2011-12-12 23:41   ` Luke-Jr
2011-12-13  2:39     ` Stefan Thomas
2011-12-12 23:52   ` Matt Corallo
2011-12-12 23:37 ` Will

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