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From: Gregory Maxwell <gmaxwell@gmail.com>
To: Alan Reiner <etotheipi@gmail.com>
Cc: Bitcoin Development <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Stealth Addresses
Date: Mon, 13 Jan 2014 12:10:56 -0800	[thread overview]
Message-ID: <CAAS2fgTzVWUF_B_-1jkRs3WZ8Um_CcHeH7uFU0eLncgEqQ01HQ@mail.gmail.com> (raw)
In-Reply-To: <52D4458C.6010909@gmail.com>

On Mon, Jan 13, 2014 at 11:59 AM, Alan Reiner <etotheipi@gmail.com> wrote:
> Then when someone
> wants to pay you, you simply give them the multiplier and root key (they
> already have the root key, but should verify).
[...]
> What
> advantages does "stealth addresses" have over this scheme?  You could extend
> it using some kind of deterministic sub-branching and/or ECDH to create
> multiple payment addresses without querying the payee.

The stealth address stuff is the ECDH to create multiple payment
addresses without querying the payee.


Uh while I'm responding again, what I'd discussed with Peter Todd in
IRC used two EC points in the stealth address. One for the payment and
one for the ECDH.  The reason to use two is that it makes delegating
detection possible and so you don't have to have you spending keys
online to even detect these payments.  Why'd that get dropped?

I don't think this is a good idea if you have to constantly keep your
spending key(s) online even to detect payments, even with the limited
use-cases envisioned.



  reply	other threads:[~2014-01-13 20:11 UTC|newest]

Thread overview: 88+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-06 12:03 [Bitcoin-development] Stealth Addresses Peter Todd
2014-01-08 10:20 ` Jeremy Spilman
2014-01-10 10:20   ` Peter Todd
2014-01-10 11:28     ` Drak
2014-01-10 12:00       ` Peter Todd
2014-01-12 10:33     ` Jeremy Spilman
2014-01-12 12:51       ` Mike Hearn
2014-01-12 18:20         ` Jeremy Spilman
2014-01-12 18:26           ` Mike Hearn
2014-01-13  9:13             ` Jeremy Spilman
2014-01-14 14:15               ` Peter Todd
2014-01-14 17:54                 ` Odinn Cyberguerrilla
2014-01-12 21:18       ` Gavin Andresen
2014-01-13  9:52         ` Gregory Maxwell
2014-01-13 10:39           ` Mike Hearn
2014-01-13 13:37             ` Roy Badami
2014-01-13 15:58               ` Mike Hearn
2014-01-13 20:11                 ` Roy Badami
2014-01-14 22:53                 ` Roy Badami
2014-01-15  0:19                   ` Drak
2014-01-15 20:22                     ` Ben Davenport
2014-01-15 20:38                       ` Gregory Maxwell
2014-01-15 20:44                         ` Jeff Garzik
2014-01-15 22:38                           ` [Bitcoin-development] Static addresses on chains encouraging address *RE* use Troy Benjegerdes
2014-01-15 23:01                           ` [Bitcoin-development] Stealth Addresses Mike Hearn
2014-01-15 23:04                           ` Roy Badami
2014-01-15 23:07                             ` Jeff Garzik
2014-01-15 23:17                               ` Roy Badami
2014-01-15 23:19                                 ` Roy Badami
2014-01-15 23:09                           ` [Bitcoin-development] unlinakble static address? & spv-privacy (Re: Stealth Addresses) Adam Back
2014-01-16  1:02                             ` Jeremy Spilman
2014-01-16  1:32                               ` Gregory Maxwell
2014-01-18 17:44                                 ` Troy Benjegerdes
2014-01-18 20:25                                   ` Christophe Biocca
2014-01-20 11:11                                   ` Peter Todd
2014-01-21  4:00                                 ` Jeremy Spilman
2014-01-24  9:17                                   ` Peter Todd
2014-01-16 11:42                               ` Adam Back
2014-01-16 18:19                                 ` Troy Benjegerdes
2014-01-16  0:05                           ` [Bitcoin-development] Stealth Addresses Jeremy Spilman
2014-01-16  0:10                             ` Gregory Maxwell
2014-01-16  0:24                             ` Mark Friedenbach
2014-01-16  0:44                             ` Eric Martindale
2014-01-16  6:26                               ` Gary Rowe
2014-01-16  9:48                                 ` Wladimir
2014-01-16  1:16                             ` Odinn Cyberguerrilla
2014-01-16 10:14                             ` Drak
2014-01-16 10:19                               ` Mike Hearn
2014-01-16 11:12                               ` [Bitcoin-development] reusable address privacy problems & fuzzy bait limitations (Re: Stealth Addresses) Adam Back
2014-01-16 21:28                             ` [Bitcoin-development] Stealth Addresses Peter Todd
2014-01-17  2:30                               ` Johnathan Corgan
2014-01-17  3:13                               ` Jeremy Spilman
2014-01-17  7:49                               ` Drak
2014-01-17  9:15                                 ` Mike Hearn
2014-01-17  9:19                                   ` Mark Friedenbach
2014-01-17  9:23                                   ` Natanael
2014-01-17  9:59                                   ` Drak
2014-01-17 20:16                                     ` Cameron Garnham
2014-01-17 14:46                                   ` Peter Todd
2014-01-17 19:21                                     ` Ben Davenport
2014-01-18  4:55                                       ` Alan Reiner
2014-01-18  5:09                                         ` Gregory Maxwell
2014-01-18 23:12                                           ` Jeremy Spilman
2014-01-18 23:50                                             ` Gregory Maxwell
2014-01-20 11:08                                             ` Peter Todd
2014-01-13 19:53               ` Roy Badami
2014-01-13 19:57                 ` Mike Hearn
2014-01-13 20:01                   ` Roy Badami
2014-01-13 19:40           ` Roy Badami
2014-01-13 19:44             ` Drak
2014-01-13 19:59               ` Alan Reiner
2014-01-13 20:10                 ` Gregory Maxwell [this message]
2014-01-13 20:15                   ` Peter Todd
2014-01-13 22:02                   ` Jeremy Spilman
2014-01-14 14:19                     ` Peter Todd
2014-01-14 19:12                       ` Jeremy Spilman
2014-01-14 20:48                         ` Peter Todd
2014-01-14 21:51                         ` Adam Back
2014-01-14 22:34                           ` Jeremy Spilman
2014-01-13 20:14                 ` Peter Todd
2014-01-13 20:41                   ` Alan Reiner
2014-01-13 20:47                     ` Gregory Maxwell
2014-01-13 21:02                     ` Roy Badami
2014-01-13 21:15                       ` Alan Reiner
2014-01-13 21:27                         ` Peter Todd
     [not found]                           ` <op.w9ne31oqyldrnw@laptop-air.hsd1.ca.comcast.net>
2014-01-14 12:10                             ` Peter Todd
2014-03-06 12:23 ` Dan Carter
     [not found] <mailman.417890.1389952750.21953.bitcoin-development@lists.sourceforge.net>
2014-01-17 12:16 ` joseph

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