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 > ------------------------------------------------------------------------------ > Try New Relic Now & We'll Send You this Cool Shirt > New Relic is the only SaaS-based application performance monitoring service > that delivers powerful full stack analytics. Optimize and monitor your > browser, app, & servers with just a few lines of code. Try New Relic > and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development