the same bot ?
aside from necroreplying, updated specifications for 1.4.4 have been published, as well as C APIs
Topic: [NOW AVAILABLE] BTChip / Ledger HW1 : Bitcoin Hardware Wallet in a USB smartcard - page 18. (Read 62567 times)
May 13, 2014, 05:49:13 PM
May 13, 2014, 09:23:10 AM
the same concern
May 12, 2014, 03:16:07 AM
Is it possible to use two different keys in such a way that either of those keys could sign?
Just for the single key failover case / redundancy.
Hope it would act like duplicate door keys..
Just for the single key failover case / redundancy.
Hope it would act like duplicate door keys..
yes, as long as two chips share the same context (triple DES) keys, they can be exchanged.
If so , did it safe?
May 11, 2014, 05:29:30 PM
May 11, 2014, 03:36:37 PM
Could the btchip be used like the Yubikey for web site 2fa? If so, I think this would give additional value to my own customers.
May 11, 2014, 10:54:14 AM
Any news? 
Yes, an upcoming firmware update in a few days adding most of the missing features, C test code, and new APIs for multisignature and prepaid cards as we're discussing distribution deals with a few exchanges / marketplaces, right for the opening of "La Maison du Bitcoin" (a new physical french hub for bitcoin startups) and Bitcoin 2014 (where I'll be on the Prismicide booth, BTChip being used as a prototype of that card)
Getting closer to the commercial launch, for real this time
you'll still be able to grab a few samples at the conference though May 09, 2014, 08:52:14 AM
Any news?
March 17, 2014, 01:37:00 AM
This looks very good,
would it be possible to prepare a "emergency" transaction where the funds is sent to a cold storage paper wallet?
In case your Btchip is lost or stolen, you could have multiple ways to send this "emergency" transaction. On small problem is that this needs to be done every time you move coins in or out of your wallet.
would it be possible to prepare a "emergency" transaction where the funds is sent to a cold storage paper wallet?
In case your Btchip is lost or stolen, you could have multiple ways to send this "emergency" transaction. On small problem is that this needs to be done every time you move coins in or out of your wallet.
The good thing is that thanks to HD Wallets, you can do that off card - in case it's lost, you can enter your seed into a client that'll iterate through all indexes of the wallet up to a given number, check the balances of all addresses against the blockchain, then prepare the transaction.
March 16, 2014, 09:09:26 PM
This looks very good,
would it be possible to prepare a "emergency" transaction where the funds is sent to a cold storage paper wallet?
In case your Btchip is lost or stolen, you could have multiple ways to send this "emergency" transaction. On small problem is that this needs to be done every time you move coins in or out of your wallet.
would it be possible to prepare a "emergency" transaction where the funds is sent to a cold storage paper wallet?
In case your Btchip is lost or stolen, you could have multiple ways to send this "emergency" transaction. On small problem is that this needs to be done every time you move coins in or out of your wallet.
March 07, 2014, 03:38:00 AM
Good job.
March 07, 2014, 12:30:20 AM
A sample desktop video of an integration in KryptoKit : http://www.hardwarewallet.com/video.html (webm, so Chrome only ... just like KryptoKit )
This shows a bit better how the second factor works
how exactly did you obtain the pin that you had to enter later?)This shows a bit better how the second factor works
and that's the interesting question
it's obtained by removing and inserting the dongle again, which could not be shown just by recording the desktop. It then re-enumerate as a HID keyboard and types the transaction summary + unique transaction PIN (to be done on the same computer or on a different device supporting HID keyboard depending how confident/paranoid you feel
) 
March 06, 2014, 08:54:49 PM
A sample desktop video of an integration in KryptoKit : http://www.hardwarewallet.com/video.html (webm, so Chrome only ... just like KryptoKit )
This shows a bit better how the second factor works
how exactly did you obtain the pin that you had to enter later? )This shows a bit better how the second factor works
March 06, 2014, 06:10:02 PM
A sample desktop video of an integration in KryptoKit : http://www.hardwarewallet.com/video.html (webm, so Chrome only ... just like KryptoKit )
This shows a bit better how the second factor works
)This shows a bit better how the second factor works
January 04, 2014, 12:16:54 PM
I'm still waiting on when I can redeem my 0.1 BTC chips!
oh ok, then I think I should have been a bit more clear with what what distributed, sorry - the printed amount was mostly to show what could be done with the product - none of the chips contained anything else that the (now outdated) code.
January 03, 2014, 12:09:33 PM
I'm still waiting on when I can redeem my 0.1 BTC chips!
December 29, 2013, 03:52:43 PM
I think there is plenty of space for multiple secure hardware wallet implementations
Trezor is fully open source while we are with open specifications.
We are better protected than trezor against side channel attacks.
Trezor has a screen and buttons while we plan to be the cheapest secure hardware wallet available
so feel free to choose the best implementation for you, or even better, pick both
That said I fully support the trezor project, ordered one, and I'm typing this while waiting for their 30c3 presentation
Trezor is fully open source while we are with open specifications.
We are better protected than trezor against side channel attacks.
Trezor has a screen and buttons while we plan to be the cheapest secure hardware wallet available
so feel free to choose the best implementation for you, or even better, pick both
That said I fully support the trezor project, ordered one, and I'm typing this while waiting for their 30c3 presentation
December 28, 2013, 07:06:09 PM
December 26, 2013, 09:42:16 PM
All the best!
December 25, 2013, 06:55:40 PM
Big specification update at the usual location - BTChip Specification 1.4.3 (github link) (yes, the version isn't bumped yet)
Main new features :
And a new form factor
To be hopefully finalized during 30c3, come and get your sample if it's ready
Main new features :
- HD Wallets
- New anti-malware method, using the dongle as a keyboard (similar to the Java Card contactless notification option)
- WinUSB support for integration in Chrome-family browsers without external plugins
- Partial transactions signing (for CoinJoin oriented projects, with still some user validation)
And a new form factor
To be hopefully finalized during 30c3, come and get your sample if it's ready
November 20, 2013, 07:12:35 PM
Oops. Guess I should check that thread more often 
There have been some thoughts about improving the malware detection, which will be available in the next firmware version.
Also, a lot of under the hood upgrades of the generic smartcard platform used to host BTChip (among those : code saving, RAM saving, more code saving, more RAM saving, migration from generic HID to WinUSB, did I mention code saving ?), and of course, significant yak shaving, such as an open source Java Card implementation that can be used for developers to play with the concept.
The biggest remaining task right now is a clean integration into a few clients - we don't want to go on sale without that, and we need to find more free time to do it properly. Also yes, the website needs some serious redesign - it started out fine, then I touched it
So, sorry guys, we're not dead, just a bit slow on the bitcoin topic.
There have been some thoughts about improving the malware detection, which will be available in the next firmware version.
Also, a lot of under the hood upgrades of the generic smartcard platform used to host BTChip (among those : code saving, RAM saving, more code saving, more RAM saving, migration from generic HID to WinUSB, did I mention code saving ?), and of course, significant yak shaving, such as an open source Java Card implementation that can be used for developers to play with the concept.
The biggest remaining task right now is a clean integration into a few clients - we don't want to go on sale without that, and we need to find more free time to do it properly. Also yes, the website needs some serious redesign - it started out fine, then I touched it
So, sorry guys, we're not dead, just a bit slow on the bitcoin topic.
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