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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] BIP0039 Mnemonic code for generating
deterministic keys
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--001a11c25004998eec04e980c8c7
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We've reflected many comments about BIP39 wordlist from the community and I
think the wordlist is much better now. Specifically we removed many of
theoretically offensive words as well as we implemented algorithm for
detecting words with similar characters (cat/eat) and we resolved these
duplicities. I'm now quite happy with the wordlist and I want to ask you
for next (final?) round of comments.
From other features, we added password protection of seed and seed
hardening (against bruteforcing) using Rijndael cipher. This has been
chosen because its blocksize can be 128, 192 or 256 bits, so it fits length
of desired seeds. Also there are Rijndael implementations in every
language. Btw password protection has one interesting feature - plausible
deniability. It allows user to have one mnemonic and by using it with
different passwords, it will generate different BIP32 wallets.... (wink
wink)
I want to be pretty clear that we need to close this topic somehow, because
we want to use such algorithm in Trezor (which deadline is coming quick)
and also other wallet developers want to implement such algorithm into
clients to be compatible with Trezor. There were quite strict requirements
for such algorithm (like the possibility to convert mnemonic to seed as
well as seed to mnemonic) and I think we found a good solution. I'm wildly
asking you for constructive comments, but saying "it's a crap, I don't like
it" won't help anything.
Thanks,
slush
On Thu, Sep 12, 2013 at 6:02 PM, Matthew Mitchell <
matthewmitchell@godofgod.co.uk> wrote:
> I removed some more but I haven't added enough back in. It was taking far
> longer than expected so I gave up, but maybe someone else can try to add
> some more:
>
>
> https://github.com/MatthewLM/python-mnemonic/blob/master/mnemonic/wordlist/english.txt
>
> On 12 Sep 2013, at 13:11, Pavol Rusnak <stick@gk2.sk> wrote:
>
> > On 10/09/13 23:03, Matthew Mitchell wrote:
> >> Maybe it would have been better without the aggressive words?
> >
> > I revisited the wordlist and replaced around 67 words that can be
> > found offensive in some context.
> >
> > --
> > Best Regards / S pozdravom,
> >
> > Pavol Rusnak <stick@gk2.sk>
> >
> >
> ------------------------------------------------------------------------------
> > How ServiceNow helps IT people transform IT departments:
> > 1. Consolidate legacy IT systems to a single system of record for IT
> > 2. Standardize and globalize service processes across IT
> > 3. Implement zero-touch automation to replace manual, redundant tasks
> >
> http://pubads.g.doubleclick.net/gampad/clk?id=51271111&iu=/4140/ostg.clktrk
> > _______________________________________________
> > Bitcoin-development mailing list
> > Bitcoin-development@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>
>
>
> ------------------------------------------------------------------------------
> How ServiceNow helps IT people transform IT departments:
> 1. Consolidate legacy IT systems to a single system of record for IT
> 2. Standardize and globalize service processes across IT
> 3. Implement zero-touch automation to replace manual, redundant tasks
> http://pubads.g.doubleclick.net/gampad/clk?id=51271111&iu=/4140/ostg.clktrk
> _______________________________________________
> Bitcoin-development mailing list
> Bitcoin-development@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>
>
--001a11c25004998eec04e980c8c7
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">We've reflected many comments about BIP39 wordlist fro=
m the community and I think the wordlist is much better now. Specifically w=
e removed many of theoretically offensive words as well as we implemented a=
lgorithm for detecting words with similar characters (cat/eat) and we resol=
ved these duplicities. I'm now quite happy with the wordlist and I want=
to ask you for next (final?) round of comments.<div>
<br></div><div>From other features, we added password protection of seed an=
d seed hardening (against bruteforcing) using Rijndael cipher. This has bee=
n chosen because its blocksize can be 128, 192 or 256 bits, so it fits leng=
th of desired seeds. Also there are Rijndael implementations in every langu=
age. Btw password protection has one interesting feature - plausible deniab=
ility. It allows user to have one mnemonic and by using it with different p=
asswords, it will generate different BIP32 wallets.... (wink wink)</div>
<div><br></div><div style>I want to be pretty clear that we need to close t=
his topic somehow, because we want to use such algorithm in Trezor (which d=
eadline is coming quick) and also other wallet developers want to implement=
such algorithm into clients to be compatible with Trezor. There were quite=
strict requirements for such algorithm (like the possibility to convert mn=
emonic to seed as well as seed to mnemonic) and I think we found a good sol=
ution. I'm wildly asking you for constructive comments, but saying &quo=
t;it's a crap, I don't like it" won't help anything.</div>
<div style><br></div><div style>Thanks,</div><div style>slush</div></div><d=
iv class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Thu, Sep 12,=
2013 at 6:02 PM, Matthew Mitchell <span dir=3D"ltr"><<a href=3D"mailto:=
matthewmitchell@godofgod.co.uk" target=3D"_blank">matthewmitchell@godofgod.=
co.uk</a>></span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">I removed some more but I haven't added =
enough back in. It was taking far longer than expected so I gave up, but ma=
ybe someone else can try to add some more:<br>
<br>
<a href=3D"https://github.com/MatthewLM/python-mnemonic/blob/master/mnemoni=
c/wordlist/english.txt" target=3D"_blank">https://github.com/MatthewLM/pyth=
on-mnemonic/blob/master/mnemonic/wordlist/english.txt</a><br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
On 12 Sep 2013, at 13:11, Pavol Rusnak <<a href=3D"mailto:stick@gk2.sk">=
stick@gk2.sk</a>> wrote:<br>
<br>
> On 10/09/13 23:03, Matthew Mitchell wrote:<br>
>> Maybe it would have been better without the aggressive words?<br>
><br>
> I revisited the wordlist and replaced around 67 words that can be<br>
> found offensive in some context.<br>
><br>
> --<br>
> Best Regards / S pozdravom,<br>
><br>
> Pavol Rusnak <<a href=3D"mailto:stick@gk2.sk">stick@gk2.sk</a>><=
br>
><br>
> ----------------------------------------------------------------------=
--------<br>
> How ServiceNow helps IT people transform IT departments:<br>
> 1. Consolidate legacy IT systems to a single system of record for IT<b=
r>
> 2. Standardize and globalize service processes across IT<br>
> 3. Implement zero-touch automation to replace manual, redundant tasks<=
br>
> <a href=3D"http://pubads.g.doubleclick.net/gampad/clk?id=3D51271111&am=
p;iu=3D/4140/ostg.clktrk" target=3D"_blank">http://pubads.g.doubleclick.net=
/gampad/clk?id=3D51271111&iu=3D/4140/ostg.clktrk</a><br>
> _______________________________________________<br>
> Bitcoin-development mailing list<br>
> <a href=3D"mailto:Bitcoin-development@lists.sourceforge.net">Bitcoin-d=
evelopment@lists.sourceforge.net</a><br>
> <a href=3D"https://lists.sourceforge.net/lists/listinfo/bitcoin-develo=
pment" target=3D"_blank">https://lists.sourceforge.net/lists/listinfo/bitco=
in-development</a><br>
<br>
</div></div><br>-----------------------------------------------------------=
-------------------<br>
How ServiceNow helps IT people transform IT departments:<br>
1. Consolidate legacy IT systems to a single system of record for IT<br>
2. Standardize and globalize service processes across IT<br>
3. Implement zero-touch automation to replace manual, redundant tasks<br>
<a href=3D"http://pubads.g.doubleclick.net/gampad/clk?id=3D51271111&iu=
=3D/4140/ostg.clktrk" target=3D"_blank">http://pubads.g.doubleclick.net/gam=
pad/clk?id=3D51271111&iu=3D/4140/ostg.clktrk</a><br>___________________=
____________________________<br>
Bitcoin-development mailing list<br>
<a href=3D"mailto:Bitcoin-development@lists.sourceforge.net">Bitcoin-develo=
pment@lists.sourceforge.net</a><br>
<a href=3D"https://lists.sourceforge.net/lists/listinfo/bitcoin-development=
" target=3D"_blank">https://lists.sourceforge.net/lists/listinfo/bitcoin-de=
velopment</a><br>
<br></blockquote></div><br></div>
--001a11c25004998eec04e980c8c7--
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