On Fri, Aug 29, 2008 at 8:56 AM, David Brown <[EMAIL PROTECTED]> wrote: > I didn't realize we were designing a USB device. Does the design > allow interaction with the host computer, or is it just to receive > power? > > If it allows interaction, it doesn't even need a clock, since it can > receive a challenge. Otherwise, it could just start doing the > computation once it is connected.
I know I'm getting into this late, but an interesting USB device for this sort of thing is the YubiKey: http://www.grc.com/sn/notes-143.htm (link goes to Steve Gibson's Security Now! podcast discussing it) The YubiKey is a USB keyboard in a fob... it enters your (long) one-time password for you when necessary. -- Brad Beyenhof . . . . . . . . . . . . . . . . . http://augmentedfourth.com If the world were merely seductive, that would be easy. If it were merely challenging, that would be no problem. But I arise in the morning torn between a desire to improve the world and a desire to enjoy the world. This makes it hard to plan the day. ~ E.B. White, writer (1899-1985) -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
