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* Re: [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet root key with optional encryption
@ 2014-04-22  0:05 William Yager
  2014-04-24 19:39 ` William Yager
  0 siblings, 1 reply; 21+ messages in thread
From: William Yager @ 2014-04-22  0:05 UTC (permalink / raw)
  To: Bitcoin Dev

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The spec has been updated a bit.

Even if the bulk of the key-stretching work has been outsourced to another
device, and that device is compromised, the passphrase is now protected by
minimum 8192 rounds of salted PBKDF2-HMAC-SHA512.

The idea is that more powerful devices (mobile phones, laptops, etc.) can
do all the key-stretching on their own, whereas weaker devices with access
to another device with more computing power (like Trezors) do a fair amount
of key-stretching on their own, but can safely export the rest of the
key-stretching to the other device.

Will

On Tue, Mar 11, 2014 at 10:17 PM, Jean-Paul Kogelman <
jeanpaulkogelman@me.com> wrote:

> Hi everyone,
>
> We've been hard at work updating the spec to include features that were
> requested. We've removed the Scrypt dependency that was present in the
> initial drafts, added new KDFs, added plausible deniability and have a
> reference implementation.
>
>
> Kind regards,
>
>
> Jean-Paul Kogelman
>

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^ permalink raw reply	[flat|nested] 21+ messages in thread
* Re: [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet master seed with optional encryption
@ 2013-07-22 13:14 Mike Hearn
  2013-07-22 21:37 ` Jean-Paul Kogelman
  0 siblings, 1 reply; 21+ messages in thread
From: Mike Hearn @ 2013-07-22 13:14 UTC (permalink / raw)
  To: Jean-Paul Kogelman; +Cc: Bitcoin Dev

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This isn't usable for SPV wallets unless it has a birthday in it. Otherwise
you either need to scan the entire chain (slow) or find a fully indexed
copy of the block chain (expensive, more centralised). Just add a UNIX time
as an extra 4 bytes, or if you want to save a few characters then use a
uint16 that represents "days since birth of this specification".

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^ permalink raw reply	[flat|nested] 21+ messages in thread

end of thread, other threads:[~2014-04-24 19:39 UTC | newest]

Thread overview: 21+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-04-22  0:05 [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet root key with optional encryption William Yager
2014-04-24 19:39 ` William Yager
  -- strict thread matches above, loose matches on Subject: below --
2013-07-22 13:14 [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet master seed " Mike Hearn
2013-07-22 21:37 ` Jean-Paul Kogelman
2013-11-16  2:47   ` Gregory Maxwell
2013-11-16  3:09     ` Jean-Paul Kogelman
2013-12-26 11:48       ` Jean-Paul Kogelman
2014-03-12  3:17         ` [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet root key " Jean-Paul Kogelman
2014-03-12 13:11           ` Pavol Rusnak
2014-03-12 15:45             ` Jean-Paul Kogelman
2014-03-12 15:55               ` Pavol Rusnak
2014-03-12 16:49                 ` Gary Rowe
2014-03-12 18:00                   ` William Yager
2014-03-12 19:35                   ` Jean-Paul Kogelman
2014-03-12 19:41                     ` Gary Rowe
2014-03-12 19:26                 ` Jean-Paul Kogelman
2014-03-12 19:39                   ` Pavol Rusnak
2014-03-12 19:55                     ` William Yager
2014-03-12 20:04                       ` Pavol Rusnak
2014-03-12 20:10                         ` William Yager
2014-03-12 20:24                           ` Pavol Rusnak
2014-03-12 20:37                             ` William Yager
2014-03-12 20:42                               ` Pavol Rusnak
2014-03-12 20:49                                 ` William Yager
2014-03-12 21:08                             ` Jean-Paul Kogelman
2014-03-12 21:15                               ` William Yager

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