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In-Reply-To: <743fb106-977e-1f34-47af-9fb3b8621e72@gmail.com>
From: James MacWhyte <macwhyte@gmail.com>
Date: Wed, 26 Dec 2018 18:54:25 +0000
Message-ID: <CAH+Axy7v=26P8=CJPUqymKOcromGz+zYZ2cb2KaASgXNPpE2tQ@mail.gmail.com>
To: Aymeric VITTE <vitteaymeric@gmail.com>
Content-Type: multipart/alternative; boundary="0000000000007dae87057df15d7c"
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] BIP39 seeds
Precedence: list

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On Wed, Dec 26, 2018 at 11:33 AM Aymeric Vitte <vitteaymeric@gmail.com>
wrote:

> so, even with a tool like yours, they can be misleaded, for example trying
> a few words to replace the missing/incorrect one, get a valid seed and stay
> stuck with it forever trying to play with BIP44/49 to find their keys
>

Just a small detail, but my tool actually looks up all the possible
combinations and then finds which one has been used before by looking for
past transactions on the blockchain. Therefore, it won't tell you your
phrase is correct unless it is a phrase that has actually been used before
(preventing what you described).

Using some algorithm to take some input and generate a bip39 phrase that
you can use with any bip39 wallet sounds perfectly reasonable.

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<div dir=3D"ltr"><div><div dir=3D"ltr" class=3D"gmail_signature" data-smart=
mail=3D"gmail_signature"><div dir=3D"ltr"><br></div></div></div><div class=
=3D"gmail_quote"><div dir=3D"ltr">On Wed, Dec 26, 2018 at 11:33 AM Aymeric =
Vitte &lt;<a href=3D"mailto:vitteaymeric@gmail.com">vitteaymeric@gmail.com<=
/a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0=
px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
 =20
   =20
 =20
  <div bgcolor=3D"#FFFFFF">
    <p>so, even with a tool like yours, they can be misleaded, for
      example trying a few words to replace the missing/incorrect one,
      get a valid seed and stay stuck with it forever trying to play
      with BIP44/49 to find their keys<br></p></div></blockquote><div><br><=
/div><div>Just a small detail, but my tool actually looks up all the possib=
le combinations and then finds which one has been used before by looking fo=
r past transactions on the blockchain. Therefore, it won&#39;t tell you you=
r phrase is correct unless it is a phrase that has actually been used befor=
e (preventing what you described).</div><div><br></div><div>Using some algo=
rithm to take some input and generate a bip39 phrase that you can use with =
any bip39 wallet sounds perfectly reasonable.</div></div></div>

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