Enzo Michelangeli wrote: > > ----- Original Message ----- > From: "Bill Stewart" <[EMAIL PROTECTED]> > To: "Conspiracy" <> > Sent: Wednesday, October 03, 2001 12:41 AM > Subject: Re: Best practices/HOWTO for key storage in small office/home > office setting? > > > At 07:23 PM 10/02/2001 +0300, Sampo Syreeni wrote: > > >Or integrate some computing power into those IBM thingies, and use > > >remotely keyed encryption. Enough power is available through USB so that > > >you don't have to end up with battery power. > > > > Sounds like you're starting to reinvent the I-Button. > > (Dallas semiconductor's product - uses a small computer chip > > and an infrared link attached to a watch battery.) > > Infrared link? As far as I know, the primary interface is the so-called > 1-Wire, that uses the power lines also for I/O.
It is, in fact, the only interface. As you say, the I/O lines are used for power (or the power lines are used for I/O, depending how you look at it). Which I think is really cute. The other highly cute thing is that you can put any number of iButtons on the same 1-wire interface in any topology and it still works (I can give a summary of how this works, if people care). Note that 1-wire is really 2, of course, but since the other is ground, you typically don't have to wire it, if you don't want to. Cheers, Ben. -- http://www.apache-ssl.org/ben.html "There is no limit to what a man can do or how far he can go if he doesn't mind who gets the credit." - Robert Woodruff --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
