public inbox for bitcoindev@googlegroups.com
 help / color / mirror / Atom feed
From: Pieter Wuille <pieter.wuille@gmail.com>
To: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] Fwd: [BIP 15] Aliases
Date: Fri, 16 Dec 2011 09:46:33 +0100	[thread overview]
Message-ID: <20111216084631.GB20470@ulyssis.org> (raw)
In-Reply-To: <CACwuEiMu1iMnrv2zubqUugSwxu_jWmNxJtPuhdNoqJPgRHhKhg@mail.gmail.com>

On Thu, Dec 15, 2011 at 04:26:38PM +0800, Walter Stanish wrote:
> Interaction is a requirement, since there seems to be a widely felt
> need to preserve anonymity through the use of temporary addresses.
> Generating a temporary address requires some actual processing to
> achieve, since the issuing of the new address cannot be done without
> interacting with the entity hosting the wallet (unless I'm missing
> something?).

Just replying to this one comment: yes, some interaction is always
necessary, but not necessarily directly with the entity hosting the wallet.
There are some EC crypto tricks to do this (often mentioned under
"deterministic wallets" before):

The wallet-hosting entity has a private key x, with public key X.
The address-generating entity knows X, and generates a fresh private
key y for each transaction. For each, it calculates Z=y*X, and asks
the client to pay to hash160(Z). Afterwards, it can send a bunch of
y's to the wallet hosting service, which can reconstruct z=y*x for
each. Alternatively, the y's can be generated according to a predefined
scheme instead.

-- 
Pieter



  parent reply	other threads:[~2011-12-16  8:46 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-12 23:16 [Bitcoin-development] [BIP 15] Aliases Zell Faze
2011-12-12 23:37 ` Jorge Timón
2011-12-12 23:41   ` Luke-Jr
     [not found]     ` <CAGQP0AGBKKEqhaJZj-Rw400AjrVHE9_EMve=RWdqoaOaDsTgtw@mail.gmail.com>
2011-12-13  0:00       ` [Bitcoin-development] Fwd: " Jorge Timón
2011-12-13  0:42         ` Amir Taaki
2011-12-13  2:32           ` Daniel F
2011-12-13  2:37             ` Amir Taaki
2011-12-13  2:43               ` Luke-Jr
2011-12-13  2:52               ` Daniel F
2011-12-13 10:55           ` Mike Hearn
2011-12-13 11:42             ` Christian Decker
2011-12-13 12:32               ` Jorge Timón
2011-12-13 13:06                 ` Gavin Andresen
2011-12-13 15:46                   ` Amir Taaki
2011-12-13 16:22                     ` Andy Parkins
2011-12-14 19:22                       ` D.H.
2011-12-14 20:07                         ` Luke-Jr
2011-12-14 20:17                           ` D.H.
2011-12-14 20:21                           ` Joel Joonatan Kaartinen
2011-12-14 22:51                             ` Jorge Timón
2011-12-14 23:02                               ` Rick Wesson
2011-12-14 23:27                                 ` Luke-Jr
2011-12-15  1:22                                   ` Rick Wesson
2011-12-15  3:57                                     ` Zell Faze
2011-12-15  4:56                                       ` Kyle Henderson
2011-12-15  6:04                                         ` Zell Faze
2011-12-15  6:41                                           ` Walter Stanish
2011-12-15  7:45                                             ` Jordan Mack
2011-12-15  7:52                                               ` Jorge Timón
2011-12-15  7:48                                             ` Jorge Timón
2011-12-15  8:26                                               ` Walter Stanish
2011-12-15 10:01                                                 ` Andy Parkins
2011-12-15 11:08                                                 ` Jorge Timón
2011-12-15 11:22                                                   ` Christian Decker
2011-12-16  5:42                                                   ` Walter Stanish
2011-12-16  8:46                                                 ` Pieter Wuille [this message]
2011-12-15 15:44                                               ` Rick Wesson
2011-12-15 15:42                                           ` Rick Wesson
2011-12-16  0:07                       ` slush
2011-12-16 15:52                         ` Rick Wesson
2011-12-16 16:36                           ` slush
2011-12-16 17:10                           ` Andy Parkins
2011-12-16 17:41                             ` Rick Wesson
2011-12-16 18:29                               ` Amir Taaki
2011-12-16 19:06                                 ` Gavin Andresen
2011-12-16 19:22                                   ` Rick Wesson
2011-12-16 20:58                                   ` Andy Parkins
2011-12-16 20:54                               ` Andy Parkins
2011-12-16 21:50                                 ` Rick Wesson
2011-12-13 15:47                   ` Luke-Jr
2011-12-16 17:36                   ` Khalahan
2011-12-16 17:48                     ` Gregory Maxwell
2011-12-13 15:55               ` Walter Stanish
2011-12-13 16:15                 ` Jorge Timón
2011-12-13 16:48                 ` Gavin Andresen
2011-12-14  2:30                   ` Walter Stanish
2011-12-13  2:39     ` [Bitcoin-development] " Stefan Thomas
2011-12-12 23:52   ` Matt Corallo
2011-12-12 23:37 ` Will
     [not found] <9109000381434268897@unknownmsgid>
2011-12-13  8:55 ` [Bitcoin-development] Fwd: " Cameron Garnham

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=20111216084631.GB20470@ulyssis.org \
    --to=pieter.wuille@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