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Topic: [ESHOP launched] Trezor: Bitcoin hardware wallet - page 253. (Read 966173 times)

hero member
Activity: 531
Merit: 505
Trezor is Czech term for "vault" or "money safe box", and the Z is pronounced like in razor. See german term "Der Tresor" for the same.
donator
Activity: 1736
Merit: 1014
Let's talk governance, lipstick, and pigs.
How do you pronounce Trezor (I have to copy/paste the z since the key broke  Wink )? Is it pronounced like treasure or razor?
legendary
Activity: 1708
Merit: 1066
Yeah, Slush and I have been in contact since before Xmas discussing Trezor and MultiBit integration.

There is a fair bit to do to get everything to work, in rough order:
+ finish off the existing MultiBit work and get it out the door to 'clear the decks'.
+ work on the low level 'byte transport layer'.  Probably using javahidapi.
+ produce BIP32/ HD wallet code, for eventual inclusion in bitcoinj. I am liaising with Chris Rico on this.
+ The Trezor wallet will be (in MultiBit) watch only so there will be some work there.
+ Probably write a new 'Create Wallet' wizard to improve the user experience.
+ There will also be some UI work (extra tabs etc) I expect too.

I expect the debugging and testing to be a PITA (it's system integration work across Win/ Linux/ Mac on a magically low budget) but that is in the nature of the work.  

Any Java devs that fancy pitching in to help out would be most appreciated.
legendary
Activity: 1386
Merit: 1097
I'm in touch with Jim, we're preparing Raspberry Pi shield for him. RPi shield is wire-compatible with Trezor...
legendary
Activity: 1526
Merit: 1134
Really cool. Which client are you integrating with first? Electrum? Would you consider MultiBit/bitcoinj as well?
legendary
Activity: 1386
Merit: 1097
We finally decided to choose name for our hardware wallet. After considering all options from bitcointalk contest and after talking with some marketing specialists, we chose name Trezor.

Landing page trezor.bitcoin.cz points to this thread, but there'll be product presentation soon.

You can also follow Facebook page for more product updates: https://www.facebook.com/BitcoinTrezor
sr. member
Activity: 336
Merit: 251
Avalon ASIC Team
Glad someone else has also taken up the hardware route for Bitcoin development and ultimately the road to adoption.

let me know if you guys need anything from China.
sr. member
Activity: 441
Merit: 268
That is a sweet case. It is CNC'd aluminum, correct? Very nice finish.

Yep. CNC'd aluminium with sandblast finish.
full member
Activity: 126
Merit: 100
Damn, that's hot.

I'd like to preorder once it's available!!!
member
Activity: 85
Merit: 10
1h79nc
That is a sweet case. It is CNC'd aluminum, correct? Very nice finish.
legendary
Activity: 1386
Merit: 1097
Cannot tell if there is one from the picture.

Heh, now I see the eyelet is hidden behind the casing body. I'll upload next photos soon so eyelet will be visible as well...
legendary
Activity: 1708
Merit: 1066
What design did you go for in the end for the keyring attachment ?

Cannot tell if there is one from the picture.
legendary
Activity: 1078
Merit: 1003
Can't wait for this. This is the missing bit in the Bitcoin puzzle for making it useful to the mainstream: ease of use coupled with impenetrable online security.
legendary
Activity: 1708
Merit: 1066
It's a beauty !

:-)
legendary
Activity: 1386
Merit: 1097
First successfully CNC'ed and assembled casing! We're waiting for elox, but so far it looks very promising.

newbie
Activity: 33
Merit: 0
I don't know how long it will be before it's final, so don't get too attached yet (or create production code with it).  It's being reviewed by a real cryptographer, and should be final afterwards, barring any issues with it.

Sure, I wrote this code mainly to see if I understand the BIP 32 correctly, and if can use a little of bitcoinj and ECC in Java.

I won't be surprised if BIP 32 is changed/updated; I'm not a cryptographer but thanke's suggestions and comments in https://bitcointalk.org/index.php?topic=19137.80 make a lot of sense to me.
legendary
Activity: 1428
Merit: 1093
Core Armory Developer
BTW, I couldn't find where sipa originally posted the test vectors; is this somewhere public? (I took the test vectors from the Armory code.)

Sipa didn't want to release them yet until BIP 32 was final.  But after I setup and passed the test vectors, I asked if I could post the code, and he gave approval as long as there was a bold caveat (which I have at the top of that post).

I don't know how long it will be before it's final, so don't get too attached yet (or create production code with it).  It's being reviewed by a real cryptographer, and should be final afterwards, barring any issues with it.

P.S. -- The first CKD test was actually my own test that I came up with before Sipa even had his own implementation.  I meant to remove it, because sipa later came up with his own test vectors and made that previous test kind of pointless.  The outputs that *are* verified are the 17 public keys and the chain of pow(2,i)-1 children.
newbie
Activity: 33
Merit: 0
Sipa created some test vectors for latest BIP 32 revision, and I was able to match them in my code.  He's waiting for a response from a real cryptographer before he finalizes it, but at least we've ironed out the intention for BIP 32 and matched our test implementations.  I'm posting here just so anyone else that wants to get a headstart on it can see my unit-tested code, and the test vectors that sipa supplied.  Just don't go implementing this into production software yet!

Here is the unit-test itself, with hard-coded public keys to compare against.
Here is the implementation of ConvertSeedToMasterKey() function, and the ChildKeyDeriv() function implemented in the Armory C++ utilities, matching the latest revision of BIP 32 (as of Dec 22, 2012).

And Here is the output of my test.  It is the same chain displayed twice, all the way up to M/0/1/3/7/15/31/63/127/255/511/1023/2047/4095/8191/16383/32767.  One chain is derived strictly from private keys, the other derived strictly from public keys.  Anyone using this for their own test only needs to look at the first half.

I've re-implemented Seed-to-Master-Key and Child Key Derivation functions, and Armory's test for these, in Java. The code is here (in a bitcoinj fork):
http://code.google.com/r/matijamazi-bitcoinj/source/browse/?name=hdw#git%2Fcore%2Fsrc%2Fmain%2Fjava%2Fcom%2Fgoogle%2Fbitcoin%2Fhdw
And the unit tests:
http://code.google.com/r/matijamazi-bitcoinj/source/browse/?name=hdw#git%2Fcore%2Fsrc%2Ftest%2Fjava%2Fcom%2Fgoogle%2Fbitcoin%2Fhdw

This is all very crude and messy at the moment (just the first version where the tests passed), I'll get in shape soon.

Any comments welcome.

BTW, I couldn't find where sipa originally posted the test vectors; is this somewhere public? (I took the test vectors from the Armory code.)
legendary
Activity: 1428
Merit: 1093
Core Armory Developer
Btw, I have a BIP 32 implementation in the "newwallet" branch of Armory.

Perfect, I'll take a look!


CAVEAT:  BIP 32 is not final yet!

Sipa created some test vectors for latest BIP 32 revision, and I was able to match them in my code.  He's waiting for a response from a real cryptographer before he finalizes it, but at least we've ironed out the intention for BIP 32 and matched our test implementations.  I'm posting here just so anyone else that wants to get a headstart on it can see my unit-tested code, and the test vectors that sipa supplied.  Just don't go implementing this into production software yet!

Here is the unit-test itself, with hard-coded public keys to compare against.
Here is the implementation of ConvertSeedToMasterKey() function, and the ChildKeyDeriv() function implemented in the Armory C++ utilities, matching the latest revision of BIP 32 (as of Dec 22, 2012).

And Here is the output of my test.  It is the same chain displayed twice, all the way up to M/0/1/3/7/15/31/63/127/255/511/1023/2047/4095/8191/16383/32767.  One chain is derived strictly from private keys, the other derived strictly from public keys.  Anyone using this for their own test only needs to look at the first half.
legendary
Activity: 1386
Merit: 1097
Btw, I have a BIP 32 implementation in the "newwallet" branch of Armory.

Perfect, I'll take a look!
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