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From: Pavol Rusnak <stick@gk2•sk>
To: timo.hanke@web•de
Cc: bitcoin-development@lists•sourceforge.net
Subject: Re: [Bitcoin-development] Proposal to replace BIP0039
Date: Sun, 17 Nov 2013 01:49:00 +0100	[thread overview]
Message-ID: <5288127C.5010605@gk2.sk> (raw)
In-Reply-To: <20131117004239.GA24383@crunch>

On 17/11/13 01:42, Timo Hanke wrote:
> p.s. The question about auditing entropy would only apply to the generator,
> not the wallet. Is it yet documented how Trezor proves that external
> entropy was used? 

We'll probably use the most straightforward way:
a) trezor prints entropy A on a display (probably in hex format, this
step is triggered by sending a special flag in initialize message)
b) trezor receives entropy B from external source
c) trezor creates sha256(A + B) and uses that as a seed
d) trezor prints used seed on a display (probably in BIP39 format)
e) user can check on a trusted computer that everything was ok

(note that steps b-d are the same regardless of whether the special flag
was set)

-- 
Best Regards / S pozdravom,

Pavol Rusnak <stick@gk2•sk>



  reply	other threads:[~2013-11-17  0:49 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-24 17:29 thomasV1
2013-10-24 18:09 ` slush
2013-10-25  9:27   ` Thomas Voegtlin
2013-10-24 18:54 ` slush
2013-10-26 15:24   ` Thomas Voegtlin
2013-10-26 20:47     ` slush
2013-10-26 21:30       ` Pieter Wuille
2013-10-31  9:13         ` Thomas Voegtlin
2013-10-31 10:41           ` slush
2013-10-31 11:07             ` Peter Todd
2013-11-02  9:44             ` Thomas Voegtlin
2013-11-03  6:41               ` Timo Hanke
2013-11-03  7:03                 ` Thomas Voegtlin
2013-11-03  7:40                   ` Timo Hanke
2013-11-03  8:39                     ` Thomas Voegtlin
2013-11-04 15:10                       ` Timo Hanke
2013-11-16 23:41                         ` Pavol Rusnak
2013-11-16 23:49                     ` Pavol Rusnak
2013-11-17  0:42                       ` Timo Hanke
2013-11-17  0:49                         ` Pavol Rusnak [this message]
2013-10-31 11:11           ` slush
2013-10-31 11:18             ` slush
2013-11-02 10:10               ` Thomas Voegtlin
2013-10-24 21:55 ` Luke-Jr

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