Are you familiar with this:
http://code.google.com/p/opencryptotoken/
It does ecc and as it is based on an atmel micro controller, adding a display
is pretty straight forward
Michael
On 29/04/2013, at 18.28, Peter Todd wrote:
> On Mon, Apr 29, 2013 at 10:30:47PM +0800, Crypto Stick wrote:
>> Crypto Stick is an open source USB key for encryption and secure
>> authentication.
>> We have been accepted as a mentor organization for Google
>> Summer of Code (GSOC) 2013. One of our project ideas is to develop a
>> physical BitCoin wallet according to
>> https://en.bitcoin.it/wiki/Smart_card_wallet
>
> A word of caution: hardware Bitcoin wallets really do need some type of
> display so the wallet itself can tell you where the coins it is signing
> are being sent, and that in turn implies support for the upcoming
> payment protocol so the wallet can also verify that the address is
> actually the address of the recipient the user is intending to send
> funds too. The current Crypto Stick hardware doesn't even have a button
> for user interaction. (press n times to approve an n-BTC spend)
>
> Having said that PGP smart cards and USB keys already have that problem,
> but the consequences of signing the wrong document are usually less than
> the consequences of sending some or even all of the users funds to a
> thief. You can usually revoke a bad signature after the fact with a
> follow-up message.
>
> Not to say hardware security for private keys isn't a bad thing, but the
> protections are a lot more limited than users typically realize.
>
>
> I will say though I am excited that this implies that the Crypto Stick
> could have ECC key support in the future.
>
> --
> 'peter'[:-1]@petertodd.org
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