[Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet root key with optional encryption

William Yager will.yager at gmail.com
Tue Apr 22 00:05:04 UTC 2014

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.


On Tue, Mar 11, 2014 at 10:17 PM, Jean-Paul Kogelman <
jeanpaulkogelman at 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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